L'apport du «big data» et des données satellitaires d'observation de la Terre facilement accessibles au service de la Géologie et de l'environnement
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1 L'apport du «big data» et des données satellitaires d'observation de la Terre facilement accessibles au service de la Géologie et de l'environnement The contribution of "big data" and satellite observation data as an aid for geological and environmental studies Serge Riazanoff1, Benoît Deffontaines2, Jean-Paul Xavier1 1 : VisioTerra.fr ; 2 : Université Paris-Est Marne la Vallée
2 Big Data According to Wikipedia, Big Data consists of data sets that are so big that they cannot be handled efficiently by common database management systems. These data sets can range from tera to petabytes and beyond. 5V 5VRule Rule On the way. in Oil & Gas industries Growing rate : >20%/y and Veracity
3 Remote Sensing is impacted by BIG DATA The «Google Earth» effect Since 2005, Google Earth push to the entire world a complete Since 2005, Google Earth push to the entire world a complete coverage of the surface at a high resolution > 20 Pb coverage of the surface at a high resolution > 20 Pb NASA currently has more than 7.5 NASA currently has more than 7.5 petabytes of archived imagery. petabytes of archived imagery. ESA will have more than 20 petabytes ESA will have more than 20 petabytes of archived imagery in 2020 of archived imagery in 2020 SPATIAL RESOLUTION SPATIAL RESOLUTION REPETITIVITY REPETITIVITY RADIOMETRIC RESOLUTION RADIOMETRIC RESOLUTION More pixels More images Better precision More bands More satellites SPECTRAL RESOLUTION SPECTRAL RESOLUTION NUMBER OF VECTORS NUMBER OF VECTORS DATASETS ARE BIGGER Sentinels Constellation will collect up to 13 terabytes per day or 5 Petabytes/year Sentinels Constellation will collect up to 13 terabytes per day or 5 Petabytes/year In Houston Chevron s geologists literally sit on top of 8 petabytes of In Houston Chevron s geologists literally sit on top of 8 petabytes of seismic data. Each day they collect roughly 5 terabytes of new datas seismic data. Each day they collect roughly 5 terabytes of new datas
4 New trends in Remote Sensing business New actors : media players, multi source mixing,... New actors : media players, multi source mixing,... Small satellites. Huge performance. New vectors : micro-nano satellites <8K$ New vectors : micro-nano satellites <8K$ New economic models : crowdfunding, decrease New economic models : crowdfunding, decrease of CAPEX and OPEX, bottom-up innovation, of CAPEX and OPEX, bottom-up innovation, 24 Skybox & 28 Dove New market : Insurance, marketing, advertising, New market : Insurance, marketing, advertising, geolocation, telecom,... geolocation, telecom,... CHANGING THE WAY WE OBSERVE OUR PLANET
5 Changing the way we analyze our planet Minimize downloading, enhance materials, perform algorithms, this is now a classic approach : necessary but not enough New way is to adapt the data to the final needs and to bring users closer to processed data Big Data induces new methods, new applications and new markets More than data & images parameters! i.e. for Ocean surveys : Temperature Salinity Currents Ice sea Sea level Wind orientation Wind speed...
6 Global Climate Change From petabytes of meteorological data (ECMWF, Météo France, IFREMER ) to light and focused representations RE-ANALYZE Data analysis -wind fields -pressure -sea surface temperature Data Data aggregation aggregation Objectives: forecast of the best route for race in 2015 Main facts: -new users -new applications
7 Worlwide easy access to free EO+meteo data DIFFICULTIES IN DATA ACCESS DIFFICULTIES IN DATA ACCESS COMPLEXITY OF DATA REPRESENTATION COMPLEXITY OF DATA REPRESENTATION INTERNET BANDWIDTH / INTERNET BANDWIDTH / PRODUCT BROWSING PRODUCT BROWSING ON-THE-FLY PROCESSING ON-THE-FLY PROCESSING 2D / 3D MULTI-SCALE DISPLAY 2D / 3D MULTI-SCALE DISPLAY SAVING THE USER S NEEDS SAVING THE USER S NEEDS VtWeb : VtWeb :AASMART SMARTSOLUTION SOLUTIONFOR FORCITIZENS CITIZENSAND ANDSCIENTISTS SCIENTISTS
8 Finding EO data Search SearchCriteria Criteria Area AreaOf OfInterest Interest Orbit Orbitmodelisation modelisation Anticipation Anticipation Suitable Suitableselection selection Forecast Forecast VtAoiCatcher : VtAoiCatcher :TO TOLOCALIZE LOCALIZEEO EODATA DATAPAST PASTOR ORFUTURE FUTURE
9 Numerous EO data New Newmultitemporal multitemporal approach approach More Moreefficient efficient emergency emergencyservice service Change Change detection detection Seeps : Seeps :new newapproach approachfor foroil Oil &&Gas exploration Gas exploration Multi-source Multi-source integration integration VtAoiWatcher : VtAoiWatcher :TO TOGET GETNUMEROUS NUMEROUSINFORMATIONS INFORMATIONS&&VERY VERYFAST FAST
10 3D to 4D Geophysics : Geophysics :Gravimetric Gravimetricdata dataanalysis analysis Global Globalenvironmental environmentalsurveys surveys Geology : Geology :surfaces surfacesquantification quantification VtEscape : VtEscape :Earth Earthsurface surfaceconditions conditionsand andparameters parameters VtGeomorpho : VtGeomorpho : 3D 3D
11 Conclusions Big Data is an opportunity for Remote Sensing users : new challenges, new paradigms, new users, new services, new data providers Simplify the data access and mainly focus on parameters and information, enable sharing the relevant data. Realize new developments (R&D, software and infrastructures ) MANY THINGS ARE IN PROGRESS THANK YOU FOR YOUR ATTENTION - ADISHATZ
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