DETECTION METHOD OF METEOTSUNAMI EVENTS AND CHARACTERIZATION OF HARBOUR OSCILLATIONS IN WESTERN MEDITERRANEAN. Abstract

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "DETECTION METHOD OF METEOTSUNAMI EVENTS AND CHARACTERIZATION OF HARBOUR OSCILLATIONS IN WESTERN MEDITERRANEAN. Abstract"

Transcription

1 DETECTION METHOD OF METEOTSUNAMI EVENTS AND CHARACTERIZATION OF HARBOUR OSCILLATIONS IN WESTERN MEDITERRANEAN Gaël André 1, Marta Marcos 2, Camille Daubord 3 Abstract A detection algorithm aimed at analysing localized intermittent oscillations in sea level time series and identifying meteotsunami events is presented. The algorithm is based on wavelet analysis of high frequency sea level oscillations recorded by tide gauges. Detection thresholds are fixed both for oscillation amplitude and averaged power spectral density for each tide-gauge station. This method is tested on different historic meteotsunami events and during the large event of 26 July This method is also used to characterize harbour seiche oscillation periods in the North-Western Mediterranean Sea. Key words: tide, sea level oscillations, meteotsunami detection, harbour seiche 1. Introduction Meteotsunamis are atmospherically induced long ocean waves in the tsunami frequency band (with periods ranging from a few minutes to a few tens of minutes) that affect coasts in a destructive way. These waves are not originated by any seismic activity but by air pressure disturbances moving over the sea (Monserrat et al., 2006; Rabinovich and Monserrat, 1998). In the open ocean the disturbances generate smallamplitude barotropic waves that, near the coast, are amplified by topographic resonance in bays and harbours to produce seiche phenomena (Rabinovich, 2009). They occur in oceans all over the world, and are quite common in the North-Western Mediterranean Sea and specifically near the Balearic Islands, where they are locally known as rissaga and where large amplitude seiche oscillations with sea level heights larger than 4-5 m are occasionally observed at Ciutadella Harbour (Menorca Island). 2. Detection of meteotsunami events 2.1 Data and methods The analysis of meteotsunami events was focused on the North-Western Mediterranean Sea (Fig. 1), a region where large amplitude seiches are commonly observed, especially near the Balearic Islands. Sea level data were collected during summer periods (1997, 2006, 2007 and 2012) for all available stations in the area (see Table 1) Tide gauges records A total of 11 tide gauges located in the North-Western Mediterranean Sea were used for this study (Figure 1). Sea level time series are located along the continental shores and on the Balearic Islands. Data were available at 1 min temporal sampling during the summer 2012 period and at 5 minutes over the other periods. These tide gauges are operated by Puertos del Estado and the Balearic Islands Coastal Observing and Forecasting system for Spanish stations and by SHOM for French stations. 1 SHOM, 13 rue du Chatellier, Brest 29200, France. 2 IMEDEA (CSIC-UIB), Miquel Marquès, 21, Esporles, Spain. 3 SHOM, 13 rue du Chatellier, Brest 29200, France. 83

2 Figure 1. Tide gauges location in the Western Mediterranean. Sea level observations for summer 2012 were available for all stations, which allowed the study of the recent meteotsunami event on 26 July Additionally, data were also collected for periods corresponding to June-July 1997, June 2006 and July 2007 for Barcelona, Valencia, Sagunto and Ibiza stations in order to investigate other reported historical events. Finally, long time-series from 2009 to 2012 were studied for Palma and Pollensa stations. Table 1. Synthesis of available tide gauge data tested in this study. Available periods are indicated in grey with the temporal sampling. Tide gauge stations Periods used for the study Pollensa 1 min 5 min Andratx 1 min Sa Rapita 1 min Palma 1 min 5 min Ibiza 5 min 5 min 1 min Gandia 1 min Valencia 5 min 5 min 5 min 1 min Sagunto 5 min 1 min Barcelona 5 min 5 min 5 min 1 min Port Vendres 1 min Sète 1 min Detection method of meteotsunami events A detection method of meteotsunami events based on the continuous wavelet transform (Grinsted et al. 2004) was used to analyse localized intermittent oscillations in sea level time-series. A 3-hour butterworth high-pass filter was applied to the sea level time series in order to suppress the tidal signal and all lowfrequency oscillations. The amplitude of the high-frequency oscillations was then computed as the difference between two consecutive maximum and minimum values, whereas Power Spectral Density (PSD) was computed using a continuous wavelet transform. For example, the continuous wavelet transform applied to the sea level time serie at the Pollensa station during July 2012 is represented in Figure 2a. Frequency-averaged PSD (Fig. 2b) clearly shows three 84

3 Coastal Dynamics 2013 distinct large amplitude oscillations events on 1, and July 2012, with sea level oscillations (Fig. 2c) higher than 10 cm and a frequency-averaged PSD higher than 10 m²/cpm. Figure 2. Continuous wavelet transform spectra (a), corresponding frequency-averaged power spectrum density (b), oscillations amplitude (c) and sea level oscillations (d) computed from the sea level time-serie recorded at Pollensa station during July Oscillation amplitude and frequency-averaged PSD thresholds must be defined and used to highlight only amplified seiche oscillations that are unusual and could be related to a meteotsunami event. Thresholds are harbour-specific, and should be defined for each site independently. Hence, thresholds values are computed in order to have 95% of oscillation amplitude and frequency-averaged PSD values lower than thresholds. This is done only on times-series longer than one year. Unfortunately, available tide gauge time series are not all as long as needed to compute thresholds (Table 1), which were only fixed for Palma and Pollensa stations over the period Tests of the detection algorithm The detection method detailed above is tested on different periods. It is first applied on summer 1997, 2006 and 2007 periods for which historical meteotsunamis affecting the North-West Mediterranean Sea have been reported in the literature (Vilibić et al., 2008; Jansa et al., 2007; Marcos et al., 2009). It is then applied on July 2012, since a meteotsunami-like event took place on 26 July 2012 and affected all the Spanish and French Mediterranean coasts Historical events Many destructive flood events were observed and documented in the region of the Balearic Islands (Vilibić et al., 2008). In particular, Ciutadella harbour is one of the sites where larger events occur with rissaga waves reaching up to 4-5 m (Gomis et al., 1993; Garcies et al., 1996, Jansa et al., 2007). Strong events were reported on 7-9 June 1997, July 1997, 15 June 2006 and on 22 June Unfortunately we do not have access to these tide gauge data, so far. Our detection method was therefore applied to Barcelona, Sagunto and Valencia tide gauge observations in the Spanish coast and to Ibiza station in the nearby island. The resulting analyses for summer periods of years 1997, 2006 and 2007 are shown in Figure 3. Dates for which large oscillations were detected are summarized in the Table 2. Large amplitude seiches were detected on 4-11 June and on July 1997 at Valencia station. On 2006, events are detected on and June 2006 and during summer 2007, three consecutive events are identified from 22 to 26 June These tests of the method prove that it is efficient to detect historical events reported in the literature. 85

4 Coastal Dynamics 2013 a b c d Figure 3. Detection method applied at Valencia station for summer 1997 (a), Barcelona for summer 2006 (b) and Ibiza for summer 2006 (c) and 2007 (d). 86

5 Table 2. Results of the detection method tested on tide gauge data Periods Tide gauge Stations Valencia Barcelona Valencia Barcelona Ibiza Valencia Barcelona Ibiza Valencia Sagunto Barcelona Detected dates Historical events References 4-11 June June June July July July June June June June June June June 1997 Vibilic et al July June 2006 Vibilic et al Jansa et al June 2007 Marcos et al The 26 July 2012 event A meteotsunami-like event occurred on 26 July 2012 in the North-Western Mediterranean Sea. During this event, large sea level amplitude oscillations were observed at coastal tide gauges, along the Spanish, French and Balearic Islands coasts. The origin of large and unusual harbour oscillations in this area such as observed on the 26 July 2012 is often described in the literature as an oceanic response to some atmospheric gravity waves and/or to convective pressure jumps (Tintoré et al., 1988, Monserrat et al., 1991; Monserrat el al., 2006, Renault et al 2011). In the western Mediterranean, travelling atmospheric pressure oscillations could generate these long oceanic surface waves that can become amplified and produce strong seiche oscillations inside harbours. A 6 hpa abrupt jump of sea surface air pressure (between 1018 and 1012 hpa) was recorded at the same time by offshore wave buoys and coastal stations in the Balearic area (Figure 4). Figure 4. Atmospheric pressure recorded at Sa Rapita, Andratx and Pollensa stations from 24 to 31 July Figure 5 shows 1-min sea level oscillations after application of the 3-hour high pass filter. On this figure, the signature of this event was evidenced by sea level oscillations of about 40 cm along Spanish and Balearic coasts, with periods ranging between a few minutes and some tens of minutes. Meteotsunami waves seem to propagate from Valencia region eastward to the Balearic Islands and north-eastward along 87

6 Catalan and French coasts. Then, harbour seiches of cm were recorded at Port-Vendres and Sète, likely as a consequence of the same event. Figure 5. Sea level oscillations from 1 minute tide gauge measurements. The detection method of meteotsunami events was applied to the sea level oscillations time-series represented on Figure 5. Results for the Pollensa station during July 2012 are visible on Figure 2 which clearly shows a large amplitude oscillation event on 26 July The same event is also detected for all sites analysed in this study. 3. Characterization of harbour seiche oscillation periods The meteotsunami detection method can also be used to characterize harbour seiche oscillation periods in the North-Western Mediterranean Sea. This analysis is based on long time-series, spanning the period , which have been collected for Pollensa and Palma stations on Mallorca Island (see location on Figure 1). First of all, thresholds values are computed over 4-year time-series of oscillation amplitude and frequency-averaged PSD. Computed histograms are presented on Figure 6. Hence, thresholds values are fixed to 12.6 and 21 cm for the oscillation amplitude and to 8.7 and 13.9 m²/cpm for the frequencyaveraged PSD at Pollensa and Palma stations respectively. The characterization of harbour seiche oscillation periods is then based on the meteotsunami detection method used to identify large amplitude oscillations. 88

7 a b c d Figure 6. Histograms of oscillation amplitude and frequency-averaged PSD at Pollensa (upper) and Palma (lower) stations. Finally, spectra were calculated during calm periods of 4 consecutive days, corresponding to weak sea level oscillations. Spectra of background sea level oscillations computed as the average spectra over 4 years ( ) are represented on Figure 7, for Pollensa and Palma stations. The background spectra represent the natural periods of harbour seiche oscillations. Hence, main harbour seiche occurs at periods of 16, 21, 34 and minutes in Pollensa harbour and at 24 and 73 minutes in Palma harbour. Figure 7. Spectral density of sea level oscillations computed on calm periods at Pollensa (left) and Palma (right) stations. Average spectra are represented as a black line. 89

8 4. Conclusion and discussion A detection method of meteotsunami events based on continuous wavelet transform (Grinsted et al. 2004) has been used to analyze localized intermittent oscillations in sea level time-series. This method is tested on different historic meteotsunami events which occurred near the Balearic Islands and on the recent 26 July 2012 event which affected all the Spanish and French Mediterranean coasts. It has been shown that the method is efficient to detect the occurrences of meteotsunami events, but it is not able to separate them from other events that induce similar amplified high frequency oscillations. Improvements could be done to try to better isolate meteotsunamis from other amplified seiches generating events. This detection method of large sea level amplitude oscillations is finally used to characterize harbour seiche oscillation periods. The knowledge of harbour oscillation periods is important because seiches may cause problems for the safety of navigation and may prevent proper operation of ports. These harbour seiche oscillation periods are represented by the mean background spectra estimated as the average spectra at each tide gauge for all available calm periods of 4 consecutive days. The frequency response to the external forcing for each site can be estimated as the ratio between the spectrum of an event and the spectrum of the corresponding background following the method described in Marcos et al, Therefore, the spectral ratio may be considered as the estimation of the energy content of the incoming long waves during the event. Figure 8. Spectral density of sea level oscillations (left) and spectral ratio (right) computed during the 26 July 2012 event at Pollensa and Palma stations Figure 8 shows the spectral density and the corresponding spectral ratio computed during the meteotsunami event over 4 days at Pollensa and Palma stations. For this event, the sea level forcing consists of waves with periods between 16 and 28 min. Indeed, high energy peaks appear within this frequency band on the spectral ratio of the two sites. An increase of energy is also observed at periods around 47 and 73 min at Palma site. This method should also be tested in macro-tidal area such as in the English Channel and along the Atlantic coast. Then, it could be implemented on the real-time data acquisition process of SHOM to build a real-time monitoring system for large amplitude seiches. Finally, the characterization of harbour seiche oscillation periods should be extended to all RONIM tide gauge observatories which provide long timeseries of sea level height. Acknowledgements The authors would like to thanks CETMEF, Météo-France and Puertos del Estado for providing wave buoys and meteorological data. The sea level observations of Port-Vendres and Sète are the property of SHOM, DREAL-LR, CG Pyrénées Orientales and Région Languedoc-Roussillon and are available on the REFMAR website (refmar.shom.fr). Other sea level stations are downloaded from the Sea Level Station Monitoring Facility website (ioc-sealevelmonitoring.org) and from the Balearic Islands Coastal Observing 90

9 and Forecasting System (socib.es). References Garcies, M., Gomis, D., Monserrat, S., Pressure-forced seiches of large amplitude in inlets of the Balearic Islands. Part II: observational study. J. Geophys. Res., 101: Gomis, D., Monserrat, S., Tintoré, J Pressure-forced seiches of large amplitude in inlets of the Balearic Islands, J. Geophys. Res., 98(C8): Grinsted, A., Jevrejeva, S., and Moore, J., Application of the cross wavelet transform and wavelet coherence to geophysical time series. Nonlinear Proc. Geophys., 11: Jansá, A., Monserrat, S., and Gomis, D., The rissaga of 15 June 2006 in Ciutadella (Menorca), a meteorological tsunami, Advances in Geosciences:,12: 1-4. Marcos, M., Monserrat, S., Medina, R., Orfila, A., Olabarrieta, M., External forcing of meteorological tsunamis at the coast of the Balearic Islands, Physics and Chemistry of the Earth, 34(17-18): Monserrat, S., Ramis, C., and Thorpe, A. J., Large amplitude pressure oscillations in the Western Mediterranean, Geophys. Res. Lett., 18: Monserrat, S., Vilibić, I., and Rabinovich, A. B., Meteotsunamis: atmospherically induced destructive ocean waves in the tsunami frequency band, Nat. Hazards Earth Syst. Sci., 6: Rabinovich, A. B., Monserrat, S., Generation of meteorological tsunamis (large amplitude seiches) near the Balearic and Kuril Islands, Natural Hazards, 18(1): Rabinovich, A. B., 2009, Seiches and harbour oscillations. In: Handbook of Coastal and Ocean Engineering (ed. Y.C. Kim), World Scientific, Singapore. Renault, L., Vizoso, G., Jansá, A., Wilkin, J., and Tintoré, J., Toward the predictability of meteotsunamis in the Balearic Sea using regional nested atmosphere and ocean models, Geophys. Res. Lett., 38: L Tintoré, J., Gomis, D., Alonso, S., Wang, D. P., A theoretical study of large sea level oscillations in the Western Mediterranean. J. Geophys. Res., 93: Vilibić, I., Monserrat, S., Rabinovich, A., Mihanović, H., Numerical Modelling of the Destructive Meteotsunami of 15 June, 2006 on the Coast of the Balearic Islands. Pure and Applied Geophysics, 165(11-12):

10 92

1993-1998: M. S. Degree in Physics, University of the Balearic Islands, Spain

1993-1998: M. S. Degree in Physics, University of the Balearic Islands, Spain Marta Marcos Moreno IMEDEA (CSIC-UIB) C/Miquel Marquès,21 07190, Esporles (Balears) SPAIN Tel: +34 971611732 Fax: +34971611761 e-mail:marta.marcos@uib.es PERSONAL INFORMATION Date of birth: November,3,

More information

Meteotsunamis: atmospherically induced destructive ocean waves in the tsunami frequency band

Meteotsunamis: atmospherically induced destructive ocean waves in the tsunami frequency band Meteotsunamis: atmospherically induced destructive ocean waves in the tsunami frequency band S. Monserrat, I. Vilibi?, A. B. Rabinovich To cite this version: S. Monserrat, I. Vilibi?, A. B. Rabinovich.

More information

Thompson/Ocean 420/Winter 2005 Tide Dynamics 1

Thompson/Ocean 420/Winter 2005 Tide Dynamics 1 Thompson/Ocean 420/Winter 2005 Tide Dynamics 1 Tide Dynamics Dynamic Theory of Tides. In the equilibrium theory of tides, we assumed that the shape of the sea surface was always in equilibrium with the

More information

Waves: Undulatory Motion of a Water Surface

Waves: Undulatory Motion of a Water Surface Key Ideas Wind waves form when energy is transferred from wind to water. Waves transmit energy, not water mass, across the ocean s surface. The behavior of a wave depends on the relation between the wave

More information

Seasonal and interannual changes of atmospheric pressure, air and water temperatures in the area of the Kuril Ridge

Seasonal and interannual changes of atmospheric pressure, air and water temperatures in the area of the Kuril Ridge Seasonal and interannual changes of atmospheric pressure, air and water temperatures in the area of the Kuril Ridge George V. SHEVCHENKO 1 and Akie Kato 2 1 2 Institute of Marine Geology and Geophysics,

More information

Hurricanes and Storm Surge www.hcfcd.org/tropicalweather

Hurricanes and Storm Surge www.hcfcd.org/tropicalweather Hurricanes and Storm Surge www.hcfcd.org High-level winds fl ow outward Strong surface winds spiral inward EYE Calm, sometimes cloudfree, sinking air Air sinks in calm area at the storm s eye THUNDERSTORMS

More information

Near Real Time Blended Surface Winds

Near Real Time Blended Surface Winds Near Real Time Blended Surface Winds I. Summary To enhance the spatial and temporal resolutions of surface wind, the remotely sensed retrievals are blended to the operational ECMWF wind analyses over the

More information

Waves disturbances caused by the movement of energy from a source through some medium.

Waves disturbances caused by the movement of energy from a source through some medium. Oceanography Chapter 10 Waves disturbances caused by the movement of energy from a source through some medium. Floating Gull- Figure 10.1 water is not moving only the energy is moving through the water.

More information

INTEGRANDO DATOS MARINOS Y MODELOS AL SERVICIO DE LA OPERATIVA PORTUARIA: EL SISTEMA SAMPA DEL PUERTO DE ALGECIRAS

INTEGRANDO DATOS MARINOS Y MODELOS AL SERVICIO DE LA OPERATIVA PORTUARIA: EL SISTEMA SAMPA DEL PUERTO DE ALGECIRAS INTEGRANDO DATOS MARINOS Y MODELOS AL SERVICIO DE LA OPERATIVA PORTUARIA: EL SISTEMA SAMPA DEL PUERTO DE ALGECIRAS Operational Oceanography on the Strait of Gibraltar SAMPA and TRADE Teams Physical environment

More information

SIMULATION OF LONG WAVE AGITATION IN PORTS AND HARBOURS USING A TIME-DOMAIN BOUSSINESQ MODEL

SIMULATION OF LONG WAVE AGITATION IN PORTS AND HARBOURS USING A TIME-DOMAIN BOUSSINESQ MODEL Paper in Proceedings of Fifth International Symposium on Ocean Wave Measurement and Analysis WAVES 2005, 3-7 July 2005, Madrid, Spain SIMULATION OF LONG WAVE AGITATION IN PORTS AND HARBOURS USING A TIME-DOMAIN

More information

Intra-seasonal and Annual variability of the Agulhas Current from satellite observations

Intra-seasonal and Annual variability of the Agulhas Current from satellite observations Intra-seasonal and Annual variability of the Agulhas Current from satellite observations Marjolaine Krug Ecosystem Earth Observation (CSIR NRE) Pierrick Penven Laboratoire de Physique des Océans (IRD)

More information

PE s Research activities and potential links to MM5. Red Ibérica MM5 Valencia 9th -10th June 2005

PE s Research activities and potential links to MM5. Red Ibérica MM5 Valencia 9th -10th June 2005 PE s Research activities and potential links to MM5 Red Ibérica MM5 Valencia 9th -10th June 2005 PE and its R&D Area Puertos del Estado (PE) is a Public Institution that deals with the administration of

More information

The English Channel tsunami of 27 June 2011 a probable meteorological source

The English Channel tsunami of 27 June 2011 a probable meteorological source WEA WEA_0 B Dispatch: // Journal: WEA CE: Journal Name Manuscript No. Author Received: No. of pages: TS: Hema Priya The English Channel tsunami of June 0 a probable meteorological source 0 0 0 0 AQ David

More information

Hydrography at IHO cat A level: Scientific Education, at Sea Training, and Interaction with the Industry. N. Debese, R. Moitié, N.

Hydrography at IHO cat A level: Scientific Education, at Sea Training, and Interaction with the Industry. N. Debese, R. Moitié, N. Hydrography at IHO cat A level: Scientific Education, at Sea Training, and Interaction with the Industry N. Debese, R. Moitié, N. Seube analysis CHC 2010-2 Located in Brest: takes benefits of the French

More information

Sea Level Variation at Western Coast of Mexican Pacific in Response to Tsunamigenic Earthquakes ( )

Sea Level Variation at Western Coast of Mexican Pacific in Response to Tsunamigenic Earthquakes ( ) Journal of Shipping and Ocean Engineering 5 (2015) 318-326 doi 10.17265/2159-5879/2015.06.005 D DAVID PUBLISHING Sea Level Variation at Western Coast of Mexican Pacific in Response to Román Rodolfo Vera-Mendoza

More information

Brief communication An extreme meteorological event at the ISMAR oceanographic tower

Brief communication An extreme meteorological event at the ISMAR oceanographic tower Nat. Hazards Earth Syst. Sci., 12, 281 285, 2012 doi:10.5194/nhess-12-281-2012 Author(s) 2012. CC Attribution 3.0 License. Natural Hazards and Earth System Sciences Brief communication An extreme meteorological

More information

Observing systems at Spain

Observing systems at Spain Observing systems at Spain Alicia Lavín Instituto Español de Oceanografía Centro Oceanográfico de Santander European Maritime Day Gijón n May 19, 2010 Historic time series: sea level and SST Nivel del

More information

IHO cat A level at ENSIETA

IHO cat A level at ENSIETA Hydrography at master and IHO cat A level at ENSIETA N. Debese, R. Moitié, N. Seube analysis Hydro 2010-2 Nom de la conférence XXX 1 Located in Brest: takes benefits of the French marine science institutes

More information

ebb current, the velocity alternately increasing and decreasing without coming to

ebb current, the velocity alternately increasing and decreasing without coming to Slack water (slack tide): The state of a tidal current when its velocity is near zero, especially the moment when a reversing current changes its direction and its velocity is zero. The term is also applied

More information

High Resolution Altimetry Reveals New Characteristics of the December 2004 Indian Ocean Tsunami

High Resolution Altimetry Reveals New Characteristics of the December 2004 Indian Ocean Tsunami Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version will be available on the publisher Web site

More information

User s Guide. Zuniga Point. Point Loma

User s Guide. Zuniga Point. Point Loma User s Guide Welcome to the Location File for San Diego Bay, located in the southwestern corner of the U.S. San Diego Bay has an excellent natural harbor, which has made it a busy commercial port. San

More information

Tsunami observations by satellite altimeters

Tsunami observations by satellite altimeters J.F. Legeais, M. Ablain, E. Sanz (CLS) E. Bronner, N. Picot (CNES) Ocean Surface Topography Meeting Lisbon 19-10-2010 Overview What are tsunamis? High frequency phenomena whose amplitude and speed depend

More information

Internal waves and vortices in satellite images

Internal waves and vortices in satellite images Internal waves and vortices in satellite images Amelia Carolina Sparavigna Department of Applied Science and Technology Politecnico di Torino, Italy Some recent papers proposed the use of the satellite

More information

Temporal and spatial variability in The Guadalquivir Estuary: a real- time telemetry challenge

Temporal and spatial variability in The Guadalquivir Estuary: a real- time telemetry challenge Temporal and spatial variability in The Guadalquivir Estuary: a real- time telemetry challenge F.J. Gutiérrez 1 FRANCISCO.GUTIERREZ@ICMAN.CSIC.ES G. Navarro 1, F.J. Gutiérrez 1, M. Diez-Minguito 2, M.A.

More information

GLG 110 ENVIRONMENTAL GEOLOGY AND NATURAL DISASTERS WITH LAB

GLG 110 ENVIRONMENTAL GEOLOGY AND NATURAL DISASTERS WITH LAB GLG 110 ENVIRONMENTAL GEOLOGY AND NATURAL DISASTERS WITH LAB (TITLE CHANGE ONLY OCT. 2013) PRESENTED AND APPROVED: DECEMBER 7, 2012 EFFECTIVE: FALL 2013-14 Prefix & Number GLG 110 Course Title: Environmental

More information

Εxperiences from the application of the new 12-point tsunami intensity scale:

Εxperiences from the application of the new 12-point tsunami intensity scale: Εxperiences from the application of the new 12-point tsunami intensity scale: 2001-2014 G.A. Papadopoulos(1) & F. Imamura (2) (1) Natl. Observatory of Athens, Greece (2) Tohoku Univ., Sendai, Japan Quantification

More information

Spatial variability of wave energy resources around the Canary Islands

Spatial variability of wave energy resources around the Canary Islands Coastal Processes III 15 Spatial variability of wave energy resources around the Canary Islands H. Chiri, M. Pacheco & G. Rodríguez Departamento de Física, Universidad de Las Palmas de Gran Canaria, Spain

More information

Coastal flooding, 1607 floods, recent storm surges and weather events in the Severn estuary

Coastal flooding, 1607 floods, recent storm surges and weather events in the Severn estuary Coastal flooding, 1607 floods, recent storm surges and weather events in the Severn estuary Dr Kevin Horsburgh Head of Marine Physics, National Oceanography Centre 23 September 2011 National Oceanography

More information

OPERATIONAL STORM SURGES FORECASTING IN AN ESTUARY

OPERATIONAL STORM SURGES FORECASTING IN AN ESTUARY OPERATIONAL STORM SURGES FORECASTING IN AN ESTUARY DENIS PARADIS 1 ; PATRICK OHL 1 ; PIERRE DANIEL 1 1 DPREVI/MAR, Direction de la Production, Météo-France 42 Av Coriolis, 31057 Toulouse Cedex, FRANCE

More information

Sea level scenarios and extreme weather events

Sea level scenarios and extreme weather events Extreme weather and nuclear power plants (EXWE) Sea level scenarios and extreme weather events Milla Johansson, Kimmo Kahma, Hilkka Pellikka, Hanna Tietäväinen, Seppo Saku and Kirsti Jylhä Finnish Meteorological

More information

Curriculum for the Degree of. Bachelor of Science. Nautical Science

Curriculum for the Degree of. Bachelor of Science. Nautical Science Curriculum for the Degree of Bachelor of Science In Nautical Science 1 1.Name :Bachelor of Science ( Nautical Science ) Abbreviation : B.Sc.( Nautical Science ) 2.Program of Study The Bachelor of Nautical

More information

The provision of maritime transport services in the Balearic archipelago

The provision of maritime transport services in the Balearic archipelago The provision of maritime transport services in the Balearic archipelago Ms. Joana Mª Amengual Bibiloni Director General of Air and Maritime Transport of the Balearic Islands Government 1 ILLES BALEARS

More information

L. Bressan and S. Tinti Department of Physics and Astronomy (DIFA), University of Bologna, Bologna, Italy

L. Bressan and S. Tinti Department of Physics and Astronomy (DIFA), University of Bologna, Bologna, Italy doi:10.5194/nhess-16-223-2016 Author(s) 2016. CC Attribution 3.0 License. Statistical properties of coastal long waves analysed through sea-level time-gradient functions: exemplary analysis of the Siracusa,

More information

TSUNAMI DETECTION ALGORITHM. NEAREST Meeting. Lisbon May 2007

TSUNAMI DETECTION ALGORITHM. NEAREST Meeting. Lisbon May 2007 TSUNAMI DETECTION ALGORITHM NEAREST Meeting Lisbon 17-18 May 2007 1. Comparison between Filtered sea level data and Newton linear prediction on sea level data 2. Band Pass Filtering within the tsunami

More information

G R AV I T Y M E T E R

G R AV I T Y M E T E R GRAVITY METER Micro-g LaCoste is proud to introduce the gphonex gravity meter as the latest member of its land gravity meters. The gphonex gravity meter is based upon the LaCoste and Romberg technology

More information

PROHITECH WP3 (Leader A. IBEN BRAHIM) A short Note on the Seismic Hazard in Israel

PROHITECH WP3 (Leader A. IBEN BRAHIM) A short Note on the Seismic Hazard in Israel PROHITECH WP3 (Leader A. IBEN BRAHIM) A short Note on the Seismic Hazard in Israel Avigdor Rutenberg and Robert Levy Technion - Israel Institute of Technology, Haifa 32000, Israel Avi Shapira International

More information

MOVEMENTS OF OCEAN WATER

MOVEMENTS OF OCEAN WATER CHAPTER T he ocean water is dynamic. Its physical characteristics like temperature, salinity, density and the external forces like of the sun, moon and the winds influence the movement of ocean water.

More information

The Tohoku Earthquake & East Japan Tsunami

The Tohoku Earthquake & East Japan Tsunami 1 Analysis Report: Tsunami Division The Tohoku Earthquake & East Japan Tsunami 11 th,march 2011 Report Contents: Background & Facts: Japan Tsunami, March 2011 History of the East Japan Tsunami: 869 Jogan

More information

Norconsult AS Trekanten, Vestre Rosten 81, NO-7075 Tiller Memo no.: 1 Tel: +47 72 89 37 50 Fax: +47 72 88 91 09

Norconsult AS Trekanten, Vestre Rosten 81, NO-7075 Tiller Memo no.: 1 Tel: +47 72 89 37 50 Fax: +47 72 88 91 09 Norconsult AS Trekanten, Vestre Rosten 81, NO-7075 Tiller Memo no.: 1 To: Norconsult/ T Isaksen From: Arne E Lothe Date: 2014-06-25 MetOcean data at Gamnes, Kirkenes, Norway Table of Contents Versions

More information

BIOLOGICAL MONITORING WITH THE WESTERN CANADIAN ODAS MARINE BUOY NETWORK

BIOLOGICAL MONITORING WITH THE WESTERN CANADIAN ODAS MARINE BUOY NETWORK BIOLOGICAL MONITORING WITH THE WESTERN CANADIAN ODAS MARINE BUOY NETWORK Jim Gower, Angelica Peña and Ann Gargett Institute of Ocean Sciences, P.O. Box 6, Sidney, BC, V8L 4B2 Tel: 2 363-68, Fax: 363-6746,

More information

Data Centre for French Coastal Operational Oceanography (CDOCO)

Data Centre for French Coastal Operational Oceanography (CDOCO) Data Centre for French Coastal Operational Oceanography (CDOCO) M. Fichaut (IFREMER France) A. Bonnat, T. Carval, F. Lecornu, JF. Le Roux, E. Moussat, L. Nonnotte, S. Tarot Context PREVIMER : the French

More information

CALIFORNIA S TSUNAMI RISK

CALIFORNIA S TSUNAMI RISK WHAT IS A TSUNAMI? A tsunami is a series of sea waves generated by an undersea disturbance such as an earthquake or an underwater landslide. From the area of disturbance, the waves will travel outward

More information

VELOCITY FIELD UNDER PROPAGATING WAVES

VELOCITY FIELD UNDER PROPAGATING WAVES VELOCITY FIELD UNDER PROPAGATING WAVES OVER A SUBMERGED HORIZONTAL PLATE AND INDUCED FORCES Arndt Hildebrandt and Torsten Schlurmann Franzius-Institute for Hydraulic, Waterways and Coastal Engineering,

More information

Real-time Earthquake Monitoring at the Joint Australian Tsunami Warning Centre

Real-time Earthquake Monitoring at the Joint Australian Tsunami Warning Centre Real-time Earthquake Monitoring at the Joint Australian Tsunami Warning Centre Daniel Jaksa 1 and Tim Barton 2 1. Project Leader, Australian Tsunami Warning System Project, Earth Monitoring Group, Geospatial

More information

O. DURAN MEDINA F.G. SCHMITT A. SENTCHEV T. LE KIEN M. THIEBAUT. Laboratory of Oceanology and Geosciences (LOG) November 2015

O. DURAN MEDINA F.G. SCHMITT A. SENTCHEV T. LE KIEN M. THIEBAUT. Laboratory of Oceanology and Geosciences (LOG) November 2015 Multiscale turbulence characterization of tidal currents in the Scheldt River and spectral analysis of two simultaneous time series: flow velocity and tidal turbine power production. O. DURAN MEDINA F.G.

More information

Climate. 7.1 Regional Climate

Climate. 7.1 Regional Climate Climate 7 7 7.1 Regional Climate The EAW precinct lies within the monsoonal tropics of northern Australia and experiences two distinct seasons: a hot, wet season from November to March and a warm, dry

More information

ENSO Cycle: Recent Evolution, Current Status and Predictions. Update prepared by Climate Prediction Center / NCEP 9 May 2011

ENSO Cycle: Recent Evolution, Current Status and Predictions. Update prepared by Climate Prediction Center / NCEP 9 May 2011 ENSO Cycle: Recent Evolution, Current Status and Predictions Update prepared by Climate Prediction Center / NCEP 9 May 2011 Outline Overview Recent Evolution and Current Conditions Oceanic Niño Index (ONI)

More information

Determining the Optimal Sampling Rate of a Sonic Anemometer Based on the Shannon-Nyquist Sampling Theorem

Determining the Optimal Sampling Rate of a Sonic Anemometer Based on the Shannon-Nyquist Sampling Theorem Determining the Optimal Sampling Rate of a Sonic Anemometer Based on the Shannon-Nyquist Sampling Theorem Andrew Mahre National Oceanic and Atmospheric Administration Research Experiences for Undergraduates

More information

The Next Generation Science Standards (NGSS) Correlation to. EarthComm, Second Edition. Project-Based Space and Earth System Science

The Next Generation Science Standards (NGSS) Correlation to. EarthComm, Second Edition. Project-Based Space and Earth System Science The Next Generation Science Standards (NGSS) Achieve, Inc. on behalf of the twenty-six states and partners that collaborated on the NGSS Copyright 2013 Achieve, Inc. All rights reserved. Correlation to,

More information

El Niño-Southern Oscillation (ENSO) since A.D. 1525; evidence from tree-ring, coral and ice core records.

El Niño-Southern Oscillation (ENSO) since A.D. 1525; evidence from tree-ring, coral and ice core records. El Niño-Southern Oscillation (ENSO) since A.D. 1525; evidence from tree-ring, coral and ice core records. Karl Braganza 1 and Joëlle Gergis 2, 1 Climate Monitoring and Analysis Section, National Climate

More information

Kowalik, Z Tides. In: Encyclopedia of the Arctic, M. Nuttall, Editor,Routledge, TIDES

Kowalik, Z Tides. In: Encyclopedia of the Arctic, M. Nuttall, Editor,Routledge, TIDES Kowalik, Z. 2005. Tides. In: Encyclopedia of the Arctic, M. Nuttall, Editor,Routledge, 2027-2029. TIDES The tidal motion perpetually present in the Arctic Ocean influences the ice distribution and generates

More information

Received: 19 August 2010 Revised: 12 May 2011 Accepted: 11 January 2012 Published: 21 May 2012

Received: 19 August 2010 Revised: 12 May 2011 Accepted: 11 January 2012 Published: 21 May 2012 Nat. Hazards Earth Syst. Sci., 12, 167 162, 212 www.nat-hazards-earth-syst-sci.net/12/167/212/ doi:1.5194/nhess-12-167-212 Author(s) 212. CC Attribution 3. License. Natural Hazards and Earth System Sciences

More information

Effect of barometric pressure on sea level variations in the Pacific region

Effect of barometric pressure on sea level variations in the Pacific region Effect of barometric pressure on sea level variations in the Pacific region Awnesh Singh, Than Aung Department of Physics, University of the South Pacific,Suva, Fiji singh_aw@usp.ac.fj aung_t@usp.ac.fj

More information

WAVELET ANALYSES OF SOME ATMOSPHERIC PARAMETERS AT BLACK SEA REGION Zafer ASLAN, Zehra Nevin ÇAĞLAR and D.Nail YENİÇERİ

WAVELET ANALYSES OF SOME ATMOSPHERIC PARAMETERS AT BLACK SEA REGION Zafer ASLAN, Zehra Nevin ÇAĞLAR and D.Nail YENİÇERİ INTERNATIONAL JOURNAL OF ELECTRONICS; MECHANICAL and MECHATRONICS ENGINEERING Vol.3 Num.1 pp.(419-426) WAVELET ANALYSES OF SOME ATMOSPHERIC PARAMETERS AT BLACK SEA REGION Zafer, ASLAN 1 ; Zehra Nevin,

More information

Environmental Data Services for Delaware:

Environmental Data Services for Delaware: Environmental Data Services for Delaware: Serving Emergency Responders, Planners, and Researchers Network Delaware Day November 6, 2013 Overview Operational Data Services More than just research DEOS and

More information

Verification of Summer Thundestorm Forecasts over the Pyrenees

Verification of Summer Thundestorm Forecasts over the Pyrenees Verification of Summer Thundestorm Forecasts over the Pyrenees Introduction Météo-France have conducted a study of summer thunderstorm forecasts in the Pyrenees in order to evaluate the performance, the

More information

SHOCK AND VIBRATION RESPONSE SPECTRA COURSE Unit 18. Filtering

SHOCK AND VIBRATION RESPONSE SPECTRA COURSE Unit 18. Filtering SHOCK AND VIBRATION RESPONSE SPECTRA COURSE Unit 18. Filtering By Tom Irvine Email: tomirvine@aol.com Introduction Filtering is a tool for resolving signals. Filtering can be performed on either analog

More information

Coriolis, a French project for operational oceanography

Coriolis, a French project for operational oceanography Coriolis, a French project for operational oceanography S Pouliquen *1,T Carval *1,L Petit de la Villéon *1, L Gourmelen *2, Y Gouriou *3 1 Ifremer Brest France 2 Shom Brest France 3 IRD Brest France Abstract

More information

CHAPTER 4 EARTHQUAKES

CHAPTER 4 EARTHQUAKES CHAPTER 4 EARTHQUAKES Important Concepts 1. An earthquake occurs when movement along a fault zone results in a sudden release of built-up strain energy in the lithosphere. Most earthquakes occur at plate

More information

UCCS ENSC/PES 2500: Renewable Energy Spring 2011 Test 3 name:

UCCS ENSC/PES 2500: Renewable Energy Spring 2011 Test 3 name: UCCS ENSC/PES 2500: Renewable Energy Spring 2011 Test 3 name: 1. These waves travel through the body of the Earth and are called S waves. a. Transverse b. Longitudinal c. Amplitude d. Trough 2. These waves

More information

Five years of gravity measurement at Onsala Space Observatory: The absolute scale

Five years of gravity measurement at Onsala Space Observatory: The absolute scale Five years of gravity measurement at Onsala Space Observatory: The absolute scale Hans-Georg Scherneck, Chalmers Andreas Engfeldt, Lantmäteriet Per-Anders Olsson, Lantmäteriet Ludger Timmen, IfE, Leibnitz

More information

Australia s Role as a Regional Service Tsunami Provider for the Indian Ocean Tsunami Warning System

Australia s Role as a Regional Service Tsunami Provider for the Indian Ocean Tsunami Warning System Australia s Role as a Regional Service Tsunami Provider for the Indian Ocean Tsunami Warning System Daniel Jaksa & Spiro Spiliopoulos Australian Tsunami Warning System Geoscience Australia Outline Background

More information

WERA: REMOTE OCEAN SENSING FOR CURRENT, WAVE AND WIND DIRECTION Introduction to the Principle of Operation

WERA: REMOTE OCEAN SENSING FOR CURRENT, WAVE AND WIND DIRECTION Introduction to the Principle of Operation WERA: REMOTE OCEAN SENSING FOR CURRENT, WAVE AND WIND DIRECTION Introduction to the Principle of Operation Thomas Helzel, Matthias Kniephoff, Leif Petersen Helzel Messtechnik GmbH Carl-Benz-Str. 9 24568

More information

Yutaka HAYASHI 1, 2. Graduate student, Graduate School of Engineering, Tohoku University

Yutaka HAYASHI 1, 2. Graduate student, Graduate School of Engineering, Tohoku University 3 July, 2008 September at Meteorological 11-12, 2008 Research in Pavia, Institute Italy 6th International Workshop on Remote Sensing for Disaster Management Applications Yutaka HAYASHI 1, 2 1 Graduate

More information

Toolbox 2.2.2: Causes of sea level variability

Toolbox 2.2.2: Causes of sea level variability Impacts of Climate Change on Urban Infrastructure & the Built Environment A Toolbox Toolbox 2.2.2: Causes of sea level variability Authors S. Stephens 1 R. Bell 1 Affiliation 1. NIWA, PO Box 11115, Hamilton

More information

Advances in Tsunami Warning Systems Since the Great Sumatra Earthquake of 2004

Advances in Tsunami Warning Systems Since the Great Sumatra Earthquake of 2004 Advances in Tsunami Warning Systems Since the Great Sumatra Earthquake of 2004 Presented by Dr. Stuart A. Weinstein, Asst. Director Really Cool Graphics by Dr. Nathan C. Becker Most Awesome Simulation

More information

MI oceanographic data

MI oceanographic data Marine Institute Oceanographic Data SMARTSkills 2013 Postgraduate Workshop Galway, Oct 2013 Kieran Lyons (kieran.lyons@marine.ie) MI oceanographic data Measured Operational metocean time series (weather

More information

DEEP AZIMUTHAL SEISMIC ANISOTROPY IN THE WESTERNANATOLIA AND AEGEAN SUBDUCTION ZONE

DEEP AZIMUTHAL SEISMIC ANISOTROPY IN THE WESTERNANATOLIA AND AEGEAN SUBDUCTION ZONE DEEP AZIMUTHAL SEISMIC ANISOTROPY IN THE WESTERNANATOLIA AND AEGEAN SUBDUCTION ZONE G. Polat -1 and M.N. Ozel -1 Adress: 1- Boğaziçi University, Kandilli Observatory and Earthquake Research Institution,

More information

COMPARISON OF THE MET OFFICE GLOBAL SPECTRAL WAVE MODEL WITH ENVISAT SATELLITE AND BUOY OBSERVATIONS

COMPARISON OF THE MET OFFICE GLOBAL SPECTRAL WAVE MODEL WITH ENVISAT SATELLITE AND BUOY OBSERVATIONS COMPARISON OF THE MET OFFICE GLOBAL SPECTRAL WAVE MODEL WITH ENVISAT SATELLITE AND BUOY OBSERVATIONS Jian-Guo Li, Martin Holt Met Office, FitzRoy Road, Exeter, EX1 3PB, UK Email: Jian-Guo.Li / Martin.Holt@metoffice.gov.uk

More information

Damage Potential of Tropical Cyclone

Damage Potential of Tropical Cyclone Damage Potential of Tropical Cyclone Regional Specialised Meteorological Centre (RSMC)- Tropical Cyclone, New Delhi Cyclone Warning Division India Meteorological Department Mausam Bhavan, Lodi Road, New

More information

Tsunami Damage Detection at the Northwest Coast of Sumatra after the 2004 Indian Ocean Tsunami Using LANDSAT 7 Images.

Tsunami Damage Detection at the Northwest Coast of Sumatra after the 2004 Indian Ocean Tsunami Using LANDSAT 7 Images. Tsunami Damage Detection at the Northwest Coast of Sumatra after the 2004 Indian Ocean Tsunami Using LANDSAT 7 Images. S. A. Lebrón-Rivera Department Geology, University of Puerto Rico P.O. Box 9012 Mayagüez,

More information

The Definition of El Niño

The Definition of El Niño The Definition of El Niño Kevin E. Trenberth National Center for Atmospheric Research,* Boulder, Colorado ABSTRACT A review is given of the meaning of the term El Niño and how it has changed in time, so

More information

Real-time Ocean Forecasting Needs at NCEP National Weather Service

Real-time Ocean Forecasting Needs at NCEP National Weather Service Real-time Ocean Forecasting Needs at NCEP National Weather Service D.B. Rao NCEP Environmental Modeling Center December, 2005 HYCOM Annual Meeting, Miami, FL COMMERCE ENVIRONMENT STATE/LOCAL PLANNING HEALTH

More information

Applications of GIS and Web delivery of coastal monitoring data in shoreline management

Applications of GIS and Web delivery of coastal monitoring data in shoreline management Applications of GIS and Web delivery of coastal monitoring data in shoreline management Bradbury AP, Cooper T and Mason TE Channel Coastal Observatory, UK Abstract Effective planning and implementation

More information

Tsunami waves. Denys DUTYKH 1. Centre de Mathématiques et de Leurs Applications English for scientists

Tsunami waves. Denys DUTYKH 1. Centre de Mathématiques et de Leurs Applications English for scientists Tsunami waves Denys DUTYKH 1 1 Ecole Normale Supérieure de Cachan, Centre de Mathématiques et de Leurs Applications Denys.Dutykh@cmla.ens-cachan.fr English for scientists D. Dutykh (ENS Cachan) Tsunami

More information

3. Experimental Results

3. Experimental Results Experimental study of the wind effect on the focusing of transient wave groups J.P. Giovanangeli 1), C. Kharif 1) and E. Pelinovsky 1,) 1) Institut de Recherche sur les Phénomènes Hors Equilibre, Laboratoire

More information

New Technologies and Airborne LiDAR Bathymetry survey Techniques in European Environmental Coastal Mapping Projects

New Technologies and Airborne LiDAR Bathymetry survey Techniques in European Environmental Coastal Mapping Projects New Technologies and Airborne LiDAR Bathymetry survey Techniques in European Environmental Coastal Mapping Projects Nigel Townsend, Fugro LADS Corporation SSSI, Spatial Information Day 03 August 2012 Adelaide,

More information

Comparison of flow regime transitions with interfacial wave transitions

Comparison of flow regime transitions with interfacial wave transitions Comparison of flow regime transitions with interfacial wave transitions M. J. McCready & M. R. King Chemical Engineering University of Notre Dame Flow geometry of interest Two-fluid stratified flow gas

More information

SEA LEVEL REAL TIME MONITORING SYSTEM IN THE NORTHEASTERN ITALY

SEA LEVEL REAL TIME MONITORING SYSTEM IN THE NORTHEASTERN ITALY Workshop on Real-time Transmission and Processing Techniques: Improving the Global Sea Level Observing System s contribution to multihazard warning systems Intergovernmental Oceanographic Commission of

More information

COMPARISON OF VOLCANO ERUPTIONS IN KAMCHATKA WITH COORDINATES OF ATMOSPHERICS

COMPARISON OF VOLCANO ERUPTIONS IN KAMCHATKA WITH COORDINATES OF ATMOSPHERICS COMPARISON OF VOLCANO ERUPTIONS IN KAMCHATKA WITH COORDINATES OF ATMOSPHERICS N.V. Cherneva 1, R.H. Holzworth 2, A.V. Ivanov 1, G.I. Druzhin 1, A.N. Mel'nikov 1 1 Institute of Cosmophysical Research and

More information

NOTES AND CORRESPONDENCE. Interaction of Mesoscale Variability with Large-Scale Waves in the Argentine Basin

NOTES AND CORRESPONDENCE. Interaction of Mesoscale Variability with Large-Scale Waves in the Argentine Basin MARCH 2007 N O T E S A N D C O R R E S P O N D E N C E 787 NOTES AND CORRESPONDENCE Interaction of Mesoscale Variability with Large-Scale Waves in the Argentine Basin LEE-LUENG FU Jet Propulsion Laboratory,

More information

PRESENTATION OF MARITIME & PORT CONSULTING

PRESENTATION OF MARITIME & PORT CONSULTING PRESENTATION OF MARITIME & PORT CONSULTING 1 PRESENTATION Name MARITIME & PORT CONSULTING, S.L Legal status Limited Company (LC) Headquarter Office Address Doctor J.J Dominé, 19, 4º, Pta 19, 46011 Valencia

More information

Storm tide is the water level rise during a storm due to the combination of storm surge and the astronomical tide.

Storm tide is the water level rise during a storm due to the combination of storm surge and the astronomical tide. INTRODUCTION TO STORM SURGE Introduction to Storm Surge BOLIVAR PENINSULA IN TEXAS AFTER HURRICANE IKE (2008) What is Storm Surge? Inland Extent Storm surge can penetrate well inland from the coastline.

More information

Figure1. Acoustic feedback in packet based video conferencing system

Figure1. Acoustic feedback in packet based video conferencing system Real-Time Howling Detection for Hands-Free Video Conferencing System Mi Suk Lee and Do Young Kim Future Internet Research Department ETRI, Daejeon, Korea {lms, dyk}@etri.re.kr Abstract: This paper presents

More information

Glossary. continental crust: the sections of crust, the outermost layer of the earth, that include the continents

Glossary. continental crust: the sections of crust, the outermost layer of the earth, that include the continents aftershock: an earthquake that follows a larger earthquake or main shock and originates in or near the rupture zone of the larger earthquake. Generally, major earthquakes are followed by a number of aftershocks

More information

Tide - rhythmic oscillation of the ocean surface due to gravitational & centrifugal forces ( inertia ) between the Earth, Moon and Sun.

Tide - rhythmic oscillation of the ocean surface due to gravitational & centrifugal forces ( inertia ) between the Earth, Moon and Sun. Chapter 4: The Changing Level of the Sea Tides Longer Scale Variations Influence on Beaches Tide - rhythmic oscillation of the ocean surface due to gravitational & centrifugal forces ( inertia ) between

More information

MFE659 Lecture 4a EARTHQUAKES & TSUNAMIS. Japanese Tsunami. Nuclear Disaster. Deadly Whirlpool. The death toll 19,300+.

MFE659 Lecture 4a EARTHQUAKES & TSUNAMIS. Japanese Tsunami. Nuclear Disaster. Deadly Whirlpool. The death toll 19,300+. MFE659 Lecture 4a EARTHQUAKES & TSUNAMIS Japanese Tsunami Tsunami on the coast of Sumatra The death toll 19,300+. 1 2 Deadly Whirlpool Nuclear Disaster 3 4 Nuclear Disaster Widespread Devistation 5 6 TSUNAMIS

More information

Implementation of a Gabor Transform Data Quality-Control Algorithm for UHF Wind Profiling Radars

Implementation of a Gabor Transform Data Quality-Control Algorithm for UHF Wind Profiling Radars VOLUME 30 J O U R N A L O F A T M O S P H E R I C A N D O C E A N I C T E C H N O L O G Y DECEMBER 2013 Implementation of a Gabor Transform Data Quality-Control Algorithm for UHF Wind Profiling Radars

More information

TIDES. 1. Tides are the regular rise and fall of sea level that occurs either once a day (every 24.8 hours) or twice a day (every 12.4 hours).

TIDES. 1. Tides are the regular rise and fall of sea level that occurs either once a day (every 24.8 hours) or twice a day (every 12.4 hours). TIDES What causes tides? How are tides predicted? 1. Tides are the regular rise and fall of sea level that occurs either once a day (every 24.8 hours) or twice a day (every 12.4 hours). Tides are waves

More information

GETTING STARTED WITH LABVIEW POINT-BY-POINT VIS

GETTING STARTED WITH LABVIEW POINT-BY-POINT VIS USER GUIDE GETTING STARTED WITH LABVIEW POINT-BY-POINT VIS Contents Using the LabVIEW Point-By-Point VI Libraries... 2 Initializing Point-By-Point VIs... 3 Frequently Asked Questions... 5 What Are the

More information

On Es-spread effects in the ionosphere connected to earthquakes

On Es-spread effects in the ionosphere connected to earthquakes Universität Potsdam E. V. Liperovskaya, Claudia-Veronika Meister, M. Parrot, V. V. Bogdanov, N. E. Vasil eva On Es-spread effects in the ionosphere connected to earthquakes NLD Preprints ; 65 On Es-spread

More information

How can we defend ourselves from the hazard of Nature in the modern society?

How can we defend ourselves from the hazard of Nature in the modern society? How can we defend ourselves from the hazard of Nature in the modern society?, University of Bologna President of the EGU Division of Natural Hazards Email: stefano.tinti@unibo.it nh@egu.eu GIFT 2013 Natural

More information

超 伝 導 重 力 計 - 神 岡 観 測 の 意 義 Superconduction

超 伝 導 重 力 計 - 神 岡 観 測 の 意 義 Superconduction 平 成 17 年 度 共 同 利 用 研 究 成 果 発 表 研 究 会 ( 東 京 大 学 宇 宙 線 研 究 所 ) 超 伝 導 重 力 計 - 神 岡 観 測 の 意 義 Superconduction gravimeter observation at Kamioka - its significance in geophysics- 佐 藤 忠 弘 ( 国 立 天 文 台 ) Tadahiro

More information

Integrating Near Real-Time Data for Coral Reef Ecosystem Forecasting

Integrating Near Real-Time Data for Coral Reef Ecosystem Forecasting Integrating Near Real-Time Data for Coral Reef Ecosystem Forecasting NOAA s Integrated Coral Observing Network (ICON) Atlantic Oceanographic and Meteorological Laboratory Laboratory Review, March 18, 2008

More information

Wind resources map of Spain at mesoscale. Methodology and validation

Wind resources map of Spain at mesoscale. Methodology and validation Wind resources map of Spain at mesoscale. Methodology and validation Martín Gastón Edurne Pascal Laura Frías Ignacio Martí Uxue Irigoyen Elena Cantero Sergio Lozano Yolanda Loureiro e-mail:mgaston@cener.com

More information

Statistical Analysis of Non-stationary Waves off the Savannah Coast, Georgia, USA

Statistical Analysis of Non-stationary Waves off the Savannah Coast, Georgia, USA 1 Statistical Analysis of Non-stationary Waves off the Savannah Coast, Xiufeng Yang School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA, 30332 (xfyang@gatech.edu)

More information

ANALYSIS OF THUNDERSTORM CLIMATOLOGY AND CONVECTIVE SYSTEMS, PERIODS WITH LARGE PRECIPITATION IN HUNGARY. Theses of the PhD dissertation

ANALYSIS OF THUNDERSTORM CLIMATOLOGY AND CONVECTIVE SYSTEMS, PERIODS WITH LARGE PRECIPITATION IN HUNGARY. Theses of the PhD dissertation ANALYSIS OF THUNDERSTORM CLIMATOLOGY AND CONVECTIVE SYSTEMS, PERIODS WITH LARGE PRECIPITATION IN HUNGARY Theses of the PhD dissertation ANDRÁS TAMÁS SERES EÖTVÖS LORÁND UNIVERSITY FACULTY OF SCIENCE PhD

More information

Fourier Analysis. Nikki Truss. Abstract:

Fourier Analysis. Nikki Truss. Abstract: Fourier Analysis Nikki Truss 09369481 Abstract: The aim of this experiment was to investigate the Fourier transforms of periodic waveforms, and using harmonic analysis of Fourier transforms to gain information

More information

Environmental Effects On Phase Coherent Underwater Acoustic Communications: A Perspective From Several Experimental Measurements

Environmental Effects On Phase Coherent Underwater Acoustic Communications: A Perspective From Several Experimental Measurements Environmental Effects On Phase Coherent Underwater Acoustic Communications: A Perspective From Several Experimental Measurements T. C. Yang, Naval Research Lab., Washington DC 20375 Abstract. This paper

More information

Storm tide is the water level rise during a storm due to the combination of storm surge and the astronomical tide.

Storm tide is the water level rise during a storm due to the combination of storm surge and the astronomical tide. INTRODUCTION TO STORM SURGE Introduction to Storm Surge National Hurricane Center Storm Surge Unit BOLIVAR PENINSULA IN TEXAS AFTER HURRICANE IKE (2008) What is Storm Surge? Inland Extent Storm surge can

More information