T.-S. Hsu and R.L. McPherron
|
|
- Clemence Pearson
- 7 years ago
- Views:
Transcription
1 Investigation of the Structure of lmf Substorm Triggers Using Multi-Satellite Observations T.-S. Hsu and R.L. McPherron Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Tel: Fax: thsu@im~.ucla.edu 1 rmcpherron@igpp.ucla.edu ABSTRACT An outstanding question in magnetospheric physics is whether substorms are always triggered extemally by changes in the interplanetary magnetic field (IMF) or solar wind plasma, or whether they sometimes occur spontaneously as a result of internal processes. An apparent association between northward turnings of the IMF and substorm onset has been frequently demonstrated, but it is also found that not all substorms are triggered. Previous studies have shown that the ratio of triggered and non-triggered substorm is about A surprising result is that triggered substorms exhibit a stronger response than non-triggered substonns. It has been suggested that this may be due to undetected small scale structures in the IMF which presumably have weak driving fields of short duration and hence transfer less energy to the magnetosphere. In this work we use a large database of ISEE 2 and IMP8 IMF observations to examine whether small scale structures occur frequently enough to account for the 40% nontriggered substorms. We find that the probability of observing IMF small scale structures is less than 13%. This low probability (13%) does not match the occurrence frequency of 40% for non-triggered substorm onsets. It is thus unlikely that all non-triggered substorms can be attributed to small scale IMF structures missed by an upstream monitor. INTRODUCTION To understand the magnetospheric substorm, it is necessary to determine whether substorm onset is always extemally triggered by the interplanetary magnetic field (IMF) or whether substorm onset sometimes occurs spontaneously as a result of internal processes. Lyons [1995; argued that substorms must be triggered by external changes in the IMF andlor the solar wind. Specifically, Lyons [I9961 argued that events without apparent triggers were likely to be a nonsubstorm disturbance such as a convection bay [Pytte et a/., The hypothesis that most or perhaps all substorms are triggered has initiated considemble interest in substorm triggering studies. Over the past decade, several studies have demonstrated that a majority of substorms (-60%) appear to be triggered by the IMF. However, 40% of all substorms appear to begin without obvious IMF perturbations. A statistical study performed by Hsu and McPherron has demonstrated that the association between h kgers and substorm onsets is a real physical phenomenon. Another study that determined the average characteristics of triggered and non-triggered substorm in the magnetotail and at geosynchronous orbit was performed by Hsu and McPherron [2004]. It was found that the average response in the tail field and plasma suggests no qualitative difference between the two classes of events. However, the magnitude of the response is different. Triggered substorms exhibit a larger response than non-triggered ones. This surprising result has been suggested to be a manifestation of undetected small scale structures in the IMF. Small structures are presumed to have weak driving fields of short duration and hence transfer less energy to the magnetosphere. To investigate this hypothesis, multi-satellite observations are required to reduce the possibility of missing IMF trigger structures. In this study we will use multi-satellite observations to examine how frequently different IMF structure are observed at different locations in the solar wind. Specifically, data from 1978 to 1985 when two spacecrafts, ISEE2, and IMP8 were in the solar wind are used to examine the scale size of the structures that appear to trigger substorm onsets. DATA PRESENTATION AND ANALYSIS During the fall season of ISEE 2 provided solar wind observations near the subsolar region, while IMP 8 was circling the earth. A schematic diagram showing the orbits is presented in Figure 1. An automatic procedure [Lyons et al., was used to identify possible IMF triggers of substorm onset in ISEE 2 and IMP 8 solar wind observations. Both ISEE 2 - m Shock Figure I: The approximate locations of ISEE2 and IMP8 are shown by the elliptical and circular trajectories.
2
3
4
5
Solar Wind Control of Density and Temperature in the Near-Earth Plasma Sheet: WIND-GEOTAIL Collaboration. Abstract
1 Geophys. Res. Letters, 24, 935-938, 1997. Solar Wind Control of Density and Temperature in the Near-Earth Plasma Sheet: WIND-GEOTAIL Collaboration T. Terasawa 1, M. Fujimoto 2, T. Mukai 3, I. Shinohara
More information4-1-3 Space Weather Forecast Using Real-time Data
4-1-3 Space Weather Forecast Using Real-time Data In recent years, advances in telecommunications technology have made it possible to collect space-based and ground-based observation data needed for space
More informationKeywords: Geomagnetic storms Dst index Space Weather Recovery phase.
MAGNETOSPHERE BEHAVIOUR DURING THE RECOVERY PHASE OF GEOMAGNETIC STORMS JESÚS AGUADO, CONSUELO CID, YOLANDA CERRATO, ELENA SAIZ Departamento de Física. Universidad de Alcalá, E-28871 Alcalá de Henares,
More informationUnusual declining phase of solar cycle 23: Weak semi-annual variations of auroral hemispheric power and geomagnetic activity
Click Here for Full Article GEOPHYSICAL RESEARCH LETTERS, VOL. 36, L22102, doi:10.1029/2009gl040825, 2009 Unusual declining phase of solar cycle 23: Weak semi-annual variations of auroral hemispheric power
More informationMonitoring space weather with the GOES magnetometers. H.J. Singer, L. Matheson, R. Grubb, A. Newman, and S.D. Bouwer
Monitoring space weather with the GOES magnetometers H.J. Singer, L. Matheson, R. Grubb, A. Newman, and S.D. Bouwer NOAA Space Environment Center NOAA R/E/SE, 325 Broadway, Boulder, CO 80303 also at: CIRES,
More informationThe heliosphere-interstellar medium interaction: One shock or two?
1 The heliosphere-interstellar medium interaction: One shock or two? John D. Richardson M.I.T. Abstract. The issue of whether a shock forms in the interstellar medium as it approaches the heliopause has
More informationThe unifying field Theory
The unifying field Theory M T Keshe 2000-2009, all rights reserved Date of release 28.10.2009 Abstract In this paper the origin of electromagnetic fields or electromagnetism and how they are created within
More informationEMİNE CEREN KALAFATOĞLU EYİGÜLER
EMİNE CEREN KALAFATOĞLU EYİGÜLER SPACE ENVIRONMENT UZB411E 2015-2016 FALL ROOM: 322 / THIRD FLOOR UPPER ATMOSPHERE AND SPACE WEATHER LAB OFFICE HOURS: EVERY TUESDAY AND WEDNESDAY BETWEEN 15-17 FOR OTHER
More informationSpacecraft Dynamics and Control. An Introduction
Brochure More information from http://www.researchandmarkets.com/reports/2328050/ Spacecraft Dynamics and Control. An Introduction Description: Provides the basics of spacecraft orbital dynamics plus attitude
More informationCoordinate Systems. Orbits and Rotation
Coordinate Systems Orbits and Rotation Earth orbit. The earth s orbit around the sun is nearly circular but not quite. It s actually an ellipse whose average distance from the sun is one AU (150 million
More informationArtificial Satellites Earth & Sky
Artificial Satellites Earth & Sky Name: Introduction In this lab, you will have the opportunity to find out when satellites may be visible from the RPI campus, and if any are visible during the activity,
More informationDIN Department of Industrial Engineering School of Engineering and Architecture
DIN Department of Industrial Engineering School of Engineering and Architecture Elective Courses of the Master s Degree in Aerospace Engineering (MAE) Forlì, 08 Nov 2013 Master in Aerospace Engineering
More informationSINP SPACE MONITORING DATA CENTER PORTAL
SINP SPACE MONITORING DATA CENTER PORTAL Parunakian D.A. 1, Kalegaev V.V. 2, Bobrovnikov S.Yu. 2, Barinova W.O. 2 1 Moscow State University Skobeltsyn Institute of Nuclear Physics 119991, Russia, e-mail:
More informationDawn-side magnetopause observed by the Equator-s magnetic field experiment: Identification and survey of crossings
Dawn-side magnetopause observed by the Equator-s magnetic field experiment: Identification and survey of crossings M. W. Dunlop 1, A. Balogh 1, W. Baumjohann, G. Haerendel, K.-H. Fornacon 3 and E. Georgescu,4
More informationDiscuss 7 deficiencies/impediments in our understanding. 1
Do We Really Understand Solar-Wind/Magnetosphere Coupling? Joe Borovsky Space Science Institute --- University of Michigan!We have major unsolved issues about A. what controls dayside reconnection B. the
More informationLecture L17 - Orbit Transfers and Interplanetary Trajectories
S. Widnall, J. Peraire 16.07 Dynamics Fall 008 Version.0 Lecture L17 - Orbit Transfers and Interplanetary Trajectories In this lecture, we will consider how to transfer from one orbit, to another or to
More informationPlanetary Orbit Simulator Student Guide
Name: Planetary Orbit Simulator Student Guide Background Material Answer the following questions after reviewing the Kepler's Laws and Planetary Motion and Newton and Planetary Motion background pages.
More informationGravitation and Newton s Synthesis
Gravitation and Newton s Synthesis Vocabulary law of unviversal Kepler s laws of planetary perturbations casual laws gravitation motion casuality field graviational field inertial mass gravitational mass
More informationInteraction of Energy and Matter Gravity Measurement: Using Doppler Shifts to Measure Mass Concentration TEACHER GUIDE
Interaction of Energy and Matter Gravity Measurement: Using Doppler Shifts to Measure Mass Concentration TEACHER GUIDE EMR and the Dawn Mission Electromagnetic radiation (EMR) will play a major role in
More informationMotions of Earth, Moon, and Sun
Motions of Earth, Moon, and Sun Apparent Motions of Celestial Objects An apparent motion is a motion that an object appears to make. Apparent motions can be real or illusions. When you see a person spinning
More informationSolar Activity and Earth's Climate
Rasmus E. Benestad Solar Activity and Earth's Climate Second Edition Published in association with Springer Praxis ids Publishing Publisl PRAXI Chichester, UK Contents Preface to the second edition Preface
More informationMet Office Space Weather Operations and R&D
Met Office Space Weather Operations and R&D David Jackson Mark Gibbs, Suzy Bingham, Francois Bocquet, Edmund Henley, Sophie Murray WMO / ISES Meeting, August 9-10 2014, Moscow, Russia Met Office Motivation?
More informationSpaceCast/PowerCast TM
Learning to Live in a Dangerous Solar System Advanced Geomagnetic Storm Forecasting Technologies allow the Electric Power Industry to Manage Storm Impacts By: John G. Kappenman and William A. Radasky,
More informationOn 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 informationSolar wind forcing at Mercury: WSA-ENLIL model results
JOURNAL OF GEOPHYSICAL RESEARCH: SPACE PHYSICS, VOL. 118, 45 57, doi:10.1029/2012ja018064, 2013 Solar wind forcing at Mercury: WSA-ENLIL model results Daniel N. Baker, 1 Gangkai Poh, 1,2 Dusan Odstrcil,
More informationWhy don t planets crash into each other?
1 Just as we know that the sun will rise every morning, we expect the planets and the moon to stay in their orbits. And rightly so. For 400 years, people have understood that the movements of Earth, the
More informationSolar Storms and Northern lights - how to predict Space Weather and the Aurora
Solar Storms and Northern lights - how to predict Space Weather and the Aurora Pål Brekke Norwegian Space Centre/UNIS Pål Brekke torsdag 12. mars 15 Fleet of satellites watching the Sun Stereo SDO SOHO
More informationUsing spacecraft measurements ahead of Earth in the Parker spiral to improve terrestrial space weather forecasts
SPACE WEATHER, VOL. 9,, doi:10.1029/2010sw000627, 2011 Using spacecraft measurements ahead of Earth in the Parker spiral to improve terrestrial space weather forecasts D. L. Turner 1,2 and X. Li 1,2 Received
More informationThe Solar Wind Interaction with the Earth s Magnetosphere: A Tutorial. C. T. Russell
The Solar Wind Interaction with the Earth s Magnetosphere: A Tutorial C. T. Russell Department of Earth and Space Sciences and Institute of Geophysics and Space Physics University of California Los Angeles
More informationCluster-II: Scientific Objectives and Data Dissemination
r bulletin 102 may 2000 Cluster-II: Scientific Objectives and Data Dissemination C. Ph. Escoubet Space Science Department, ESA Directorate of Scientific Programmes, ESTEC, Noordwijk, The Netherlands Scientific
More informationAnalysis and visualization of space science model output and data with CISM-DX
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 110,, doi:10.1029/2004ja010956, 2005 Analysis and visualization of space science model output and data with CISM-DX M. Wiltberger Hight Altitude Observatory, National
More informationastronomy 2008 1. A planet was viewed from Earth for several hours. The diagrams below represent the appearance of the planet at four different times.
1. A planet was viewed from Earth for several hours. The diagrams below represent the appearance of the planet at four different times. 5. If the distance between the Earth and the Sun were increased,
More informationEarth in the Solar System
Copyright 2011 Study Island - All rights reserved. Directions: Challenge yourself! Print out the quiz or get a pen/pencil and paper and record your answers to the questions below. Check your answers with
More informationVersion A Page 1. 1. The diagram shows two bowling balls, A and B, each having a mass of 7.00 kilograms, placed 2.00 meters apart.
Physics Unit Exam, Kinematics 1. The diagram shows two bowling balls, A and B, each having a mass of 7.00 kilograms, placed 2.00 meters apart. What is the magnitude of the gravitational force exerted by
More informationCSSAR Space Science Cooperation
CSSAR Space Science Cooperation WANG Shuzhi Center for Space Science and Applied Research Chinese Academy of Science(CSSAR) Table of Contents Brief History of CSSAR International Cooperation CAS Strategic
More informationThis paper is also taken for the relevant Examination for the Associateship. For Second Year Physics Students Wednesday, 4th June 2008: 14:00 to 16:00
Imperial College London BSc/MSci EXAMINATION June 2008 This paper is also taken for the relevant Examination for the Associateship SUN, STARS, PLANETS For Second Year Physics Students Wednesday, 4th June
More informationSatellites and Space Stations
Satellites and Space Stations A satellite is an object or a body that revolves around another object, which is usually much larger in mass. Natural satellites include the planets, which revolve around
More informationNewton s Law of Universal Gravitation
Newton s Law of Universal Gravitation The greatest moments in science are when two phenomena that were considered completely separate suddenly are seen as just two different versions of the same thing.
More informationAstrodynamics (AERO0024)
Astrodynamics (AERO0024) 6. Interplanetary Trajectories Gaëtan Kerschen Space Structures & Systems Lab (S3L) Course Outline THEMATIC UNIT 1: ORBITAL DYNAMICS Lecture 02: The Two-Body Problem Lecture 03:
More informationcircular motion & gravitation physics 111N
circular motion & gravitation physics 111N uniform circular motion an object moving around a circle at a constant rate must have an acceleration always perpendicular to the velocity (else the speed would
More informationPhysics 30 Worksheet #10 : Magnetism From Electricity
Physics 30 Worksheet #10 : Magnetism From Electricity 1. Draw the magnetic field surrounding the wire showing electron current below. x 2. Draw the magnetic field surrounding the wire showing electron
More informationSolar System. 1. The diagram below represents a simple geocentric model. Which object is represented by the letter X?
Solar System 1. The diagram below represents a simple geocentric model. Which object is represented by the letter X? A) Earth B) Sun C) Moon D) Polaris 2. Which object orbits Earth in both the Earth-centered
More informationLecture 13. Gravity in the Solar System
Lecture 13 Gravity in the Solar System Guiding Questions 1. How was the heliocentric model established? What are monumental steps in the history of the heliocentric model? 2. How do Kepler s three laws
More informationSolar Energetic Protons
Solar Energetic Protons The Sun is an effective particle accelerator. Solar Energetic Particles (SEPs) are an important hazard to spacecraft systems and constrain human activities in space. Primary radiation
More informationData Mining Approach to Space Weather Forecast
Frontiers of Time Series Modeling 2: Nonparametric Approach to Knowledge Discovery Data Mining Approach to Space Weather Forecast T. Higuchi (Institute of Statistical Mathematics) S.-I. Ohtani (Johns Hopkins
More informationThe Effect of Space Weather Phenomena on Precise GNSS Applications
FUGRO SATELLITE POSITIONING Doc. Ref.: A12321850TCBRC1 The Effect of Space Weather Phenomena on Precise GNSS Applications December 2014 PUBLIC Table of contents The Effect of Space Weather Phenomena on
More informationUSING MS EXCEL FOR DATA ANALYSIS AND SIMULATION
USING MS EXCEL FOR DATA ANALYSIS AND SIMULATION Ian Cooper School of Physics The University of Sydney i.cooper@physics.usyd.edu.au Introduction The numerical calculations performed by scientists and engineers
More informationThe Two-Body Problem
The Two-Body Problem Abstract In my short essay on Kepler s laws of planetary motion and Newton s law of universal gravitation, the trajectory of one massive object near another was shown to be a conic
More informationREPORT SPACE WEATHER OBSERVING SYSTEMS: CURRENT CAPABILITIES AND REQUIREMENTS FOR THE NEXT DECADE
REPORT ON SPACE WEATHER OBSERVING SYSTEMS: CURRENT CAPABILITIES AND REQUIREMENTS FOR THE NEXT DECADE April 2013 Prepared by the Office of the Federal Coordinator for Meteorological Services and Supporting
More informationElectronic Signature Policy
Electronic Signature Policy June 2, 2010 ELECTRONIC SIGNATURE POLICY 1. Introduction 1.1. Background 1.1.1. New York State adopted an Electronic Signatures and Records Act (ESRA) which provides guidance
More informationEDMONDS COMMUNITY COLLEGE ASTRONOMY 100 Winter Quarter 2007 Sample Test # 1
Instructor: L. M. Khandro EDMONDS COMMUNITY COLLEGE ASTRONOMY 100 Winter Quarter 2007 Sample Test # 1 1. An arc second is a measure of a. time interval between oscillations of a standard clock b. time
More informationStatistical Study of Magnetic Reconnection in the Solar Wind
WDS'13 Proceedings of Contributed Papers, Part II, 7 12, 2013. ISBN 978-80-7378-251-1 MATFYZPRESS Statistical Study of Magnetic Reconnection in the Solar Wind J. Enžl, L. Přech, J. Šafránková, and Z. Němeček
More informationHalliday, Resnick & Walker Chapter 13. Gravitation. Physics 1A PHYS1121 Professor Michael Burton
Halliday, Resnick & Walker Chapter 13 Gravitation Physics 1A PHYS1121 Professor Michael Burton II_A2: Planetary Orbits in the Solar System + Galaxy Interactions (You Tube) 21 seconds 13-1 Newton's Law
More informationBulk properties of the slow and fast solar wind and interplanetary coronal mass ejections measured by Ulysses: Three polar orbits of observations
Click Here for Full Article JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 114,, doi:10.1029/2008ja013631, 2009 Bulk properties of the slow and fast solar wind and interplanetary coronal mass ejections measured
More informationDecision theory and the analysis of rare event space weather forecasts
SPACE WEATHER, VOL. 4,, doi:10.1029/2005sw000157, 2006 Decision theory and the analysis of rare event space weather forecasts R. S. Weigel, 1 T. Detman, 2 E. J. Rigler, 3 and D. N. Baker 1 Received 14
More informationSpace Weather Prediction Research and Services for China Manned Space Mission
Space Weather Prediction Research and Services for China Manned Space Mission Siqing Liu National Space Science Center, CAS Center for Space Science and Applied Research, CAS Outline I. General information
More information2. Orbits. FER-Zagreb, Satellite communication systems 2011/12
2. Orbits Topics Orbit types Kepler and Newton laws Coverage area Influence of Earth 1 Orbit types According to inclination angle Equatorial Polar Inclinational orbit According to shape Circular orbit
More informationDynamics and local boundary properties of the dawn-side magnetopause under conditions observed by Equator-S
Dynamics and local boundary properties of the dawn-side magnetopause under conditions observed by Equator-S M. W. Dunlop, A. Balogh, W. Baumjohann, G. Haerendel, K.-H. Fornacon, E. Georgescu, R. Nakamura,
More informationChapter 3 The Science of Astronomy
Chapter 3 The Science of Astronomy Days of the week were named for Sun, Moon, and visible planets. What did ancient civilizations achieve in astronomy? Daily timekeeping Tracking the seasons and calendar
More informationSpace Weather: Forecasting & Impacts on Critical Infrastructure
Space Weather: Forecasting & Impacts on Critical Infrastructure Dr. Genene Fisher Senior Advisor for Space Weather National Weather Service AMS Washington Forum 12 April 2012 Outline Solar Activity Update
More informationOrbital Dynamics. Orbital Dynamics 1/29/15
Orbital Dynamics Orbital Dynamics 1/29/15 Announcements Reading for next class Chapter 5: Sections 5.1-5.4 Homework #2 due next class (Tuesday, Feb. 3) Project #1 topic ideas due next Tuesday (Feb. 3)
More informationForce on Moving Charges in a Magnetic Field
[ Assignment View ] [ Eðlisfræði 2, vor 2007 27. Magnetic Field and Magnetic Forces Assignment is due at 2:00am on Wednesday, February 28, 2007 Credit for problems submitted late will decrease to 0% after
More informationEASA Safety Information Bulletin
EASA Safety Information Bulletin SIB No.: 2012-09 Issued: 23 May 2012 Subject: Effects of Space Weather on Aviation Ref. Publication: 1. EU OPS 1.390 Cosmic Radiation; 2. SIB 2012-10 Single Event Effects
More informationDue Tuesday, January 27th IN CLASS. Grading Summary: Question 11: 12 points. Question 12: 26 points. Question 13: 12 Points.
HOMEWORK #1 Solar System Exploration Due Tuesday, January 27th IN CLASS Answers to the questions must be given in complete sentences (except where indicated), using correct grammar and spelling. Please
More informationA Plan of Action Under LTSP III
A Plan of Action Under LTSP III William Liu and Robert Rankin Department of Physics, University of Alberta David Boteler Geomagnetic Laboratory, Geological Survey of Canada Submitted to the Canadian Space
More information2-1-5 Space Radiation Effect on Satellites
2-1-5 Space Radiation Effect on Satellites Solar activity and space environment is considered as fundamental and important factors for space system design and operation. Space and solar radiation is widely
More informationSolar Forcing of Electron and Ion Auroral Inputs
Solar Forcing of Electron and Ion Auroral Inputs Barbara A. Emery (NCAR), Ian G. Richardson (GSFC), David S. Evans (NOAA), Frederick J. Rich (LL/MIT), Gordon Wilson (AFRL), Sarah Gibson (NCAR), Giuliana
More informationInductive Reasoning Page 1 of 7. Inductive Reasoning
Inductive Reasoning Page 1 of 7 Inductive Reasoning We learned that valid deductive thinking begins with at least one universal premise and leads to a conclusion that is believed to be contained in the
More informationExtreme space weather: impacts on engineered systems and infrastructure
Extreme space weather: impacts on engineered systems and infrastructure Royal Academy of Engineering ISBN 1-903496-95-0 February 2013 Published by Royal Academy of Engineering Prince Philip House 3 Carlton
More informationSporadic E A Mystery Solved?
Sporadic E A Mystery Solved? In Part 1 of this QST exclusive, one of the world s leading ionospheric scientists explains the physics of sporadic E and discusses unresolved problems in understanding its
More informationEVOLUTION OF THE DEBRIS CLOUD GENERATED BY THE FENGYUN-1C FRAGMENTATION EVENT
EVOLUTION OF THE DEBRIS CLOUD GENERATED BY THE FENGYUN-1C FRAGMENTATION EVENT Carmen Pardini and Luciano Anselmo Space Flight Dynamics Laboratory Istituto di Scienza e Tecnologie dell Informazione Alessandro
More informationChapter 7 Our Planetary System. What does the solar system look like? Thought Question How does the Earth-Sun distance compare with the Sun s radius
Chapter 7 Our Planetary System 7.1 Studying the Solar System Our goals for learning:! What does the solar system look like?! What can we learn by comparing the planets to one another?! What are the major
More informationGroup Leader: Group Members:
THE SOLAR SYSTEM PROJECT: TOPIC: THE SUN Required Project Content for an Oral/Poster Presentation on THE SUN - What it s made of - Age and how it formed (provide pictures or diagrams) - What is an AU?
More informationThe Solar Wind. Chapter 5. 5.1 Introduction. 5.2 Description
Chapter 5 The Solar Wind 5.1 Introduction The solar wind is a flow of ionized solar plasma and an associated remnant of the solar magnetic field that pervades interplanetary space. It is a result of the
More informationNew Concepts in Global Tectonics NEWSLETTER
New Concepts in Global Tectonics NEWSLETTER No. 65, December, 2012 ISSN: 1833-2560 Editor: Dong R. CHOI (editor@ncgt.org) www.ncgt.org Editorial board Ismail BHAT, India (bhatmi@hotmail.com); Peter JAMES,
More informationOn the properties of O + and O 2 + ions in a hybrid model and in Mars Express IMA/ASPERA-3 data: A case study
Planetary and Space Science 56 (2008) 1204 1213 www.elsevier.com/locate/pss On the properties of O and O 2 ions in a hybrid model and in Mars Express IMA/ASPERA-3 data: A case study E. Kallio a,, A. Fedorov
More informationIonospheric electrons in Titan s tail: Plasma structure during the Cassini T9 encounter
GEOPHYSICAL RESEARCH LETTERS, VOL. 34, L24S05, doi:10.1029/2007gl030919, 2007 Ionospheric electrons in Titan s tail: Plasma structure during the Cassini T9 encounter A. J. Coates, 1 F. J. Crary, 2 D. T.
More informationA Space Weather Forecasting System with Multiple Satellites Based on a Self-Recognizing Network
Sensors 2014, 14, 7974-7991; doi:10.3390/s140507974 Article OPEN ACCESS sensors ISSN 1424-8220 www.mdpi.com/journal/sensors A Space Weather Forecasting System with Multiple Satellites Based on a Self-Recognizing
More informationTemperature anisotropy in the solar wind
Introduction Observations Simulations Summary in the solar wind Petr Hellinger Institute of Atmospheric Physics & Astronomical Institute AS CR, Prague, Czech Republic Kinetic Instabilities, Plasma Turbulence
More informationSpace Weather Forecasting - Need and Importance
Coronal Magnetic Field Measurements: Space Weather Forecasting Needs D.N. Baker Laboratory for Atmospheric and Space Physics Department of Astrophysical and Planetary Sciences Department of Physics University
More informationHow To Celebrate The Pictures Of The Asteroid Vesta
1 of 11 08/02/2012 09:04 PM Article LOS ANGELES, California (Achieve3000, May 1, 2012). Vesta is stepping into the spotlight. Thanks to NASA's Dawn spacecraft, scientists now have the first close-up pictures
More informationSolar cycle. Auringonpilkkusykli. 1844 Heinrich Schwabe: 11 year solar cycle. ~11 years
Sun Solar cycle Auringonpilkkusykli 1844 Heinrich Schwabe: 11 year solar cycle ~11 years Auringonpilkkusykli Solar cycle Butterfly diagram: Edward Maunder 1904 New cycle Spots appear at mid-latitudes Migration
More informationChapter 6 Circular Motion
Chapter 6 Circular Motion 6.1 Introduction... 1 6.2 Cylindrical Coordinate System... 2 6.2.1 Unit Vectors... 3 6.2.2 Infinitesimal Line, Area, and Volume Elements in Cylindrical Coordinates... 4 Example
More informationCurrent Staff Course Unit/ Length. Basic Outline/ Structure. Unit Objectives/ Big Ideas. Properties of Waves A simple wave has a PH: Sound and Light
Current Staff Course Unit/ Length August August September September October Unit Objectives/ Big Ideas Basic Outline/ Structure PS4- Types of Waves Because light can travel through space, it cannot be
More information88 CHAPTER 2. VECTOR FUNCTIONS. . First, we need to compute T (s). a By definition, r (s) T (s) = 1 a sin s a. sin s a, cos s a
88 CHAPTER. VECTOR FUNCTIONS.4 Curvature.4.1 Definitions and Examples The notion of curvature measures how sharply a curve bends. We would expect the curvature to be 0 for a straight line, to be very small
More informationINTRUSION PREVENTION AND EXPERT SYSTEMS
INTRUSION PREVENTION AND EXPERT SYSTEMS By Avi Chesla avic@v-secure.com Introduction Over the past few years, the market has developed new expectations from the security industry, especially from the intrusion
More informationChapter 7 Our Planetary System. Agenda. Intro Astronomy. Intro Astronomy. What does the solar system look like? A. General Basics
Chapter 7 Our Planetary System Agenda Pass back & discuss Test 2 Where we are (at) Ch. 7 Our Planetary System Finish Einstein s Big Idea Earth, as viewed by the Voyager spacecraft A. General Basics Intro
More information1. Units of a magnetic field might be: A. C m/s B. C s/m C. C/kg D. kg/c s E. N/C m ans: D
Chapter 28: MAGNETIC FIELDS 1 Units of a magnetic field might be: A C m/s B C s/m C C/kg D kg/c s E N/C m 2 In the formula F = q v B: A F must be perpendicular to v but not necessarily to B B F must be
More informationDoes currently available technology have the capacity to facilitate a manned mission to Mars?
Furze Platt Senior School Does currently available technology have the capacity to facilitate a manned mission to Mars? Daniel Messias Date: 8/03/2015 Candidate Number: 7158 Centre Number: 51519 Contents
More informationThermal Mass Availability for Cooling Data Centers during Power Shutdown
2010 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (www.ashrae.org). Published in ASHRAE Transactions (2010, vol 116, part 2). For personal use only. Additional reproduction,
More informationCalifornia State University, Los Angeles Department of Sociology. Guide to Preparing a Masters Thesis Proposal
California State University, Los Angeles Department of Sociology Guide to Preparing a Masters Thesis Proposal Overview The following few pages provide you with guidelines for writing a Masters thesis proposal.
More informationAMDA, Automated Multi-Dataset Analysis: A web-based service provided by the CDPP.
AMDA, Automated Multi-Dataset Analysis: A web-based service provided by the CDPP. Jacquey 1 C., V. Génot 1, E. Budnik 2, R. Hitier 3, M. Bouchemit 1, M. Gangloff 1, A. Fedorov 1, B. Cecconi 4, N. André
More informationActivities of the Japanese Space Weather Forecast Center at Communications Research Laboratory
J. RADIAT. RES., 43: SUPPL., S53 S57 (2002) Activities of the Japanese Space Weather Forecast Center at Communications Research Laboratory SHINICHI WATARI 1 * and FUMIHIKO TOMITA 1 Space weather / ISES/SEP
More informationTHE NATIONAL SPACE WEATHER PROGRAM
1 Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) THE NATIONAL SPACE WEATHER PROGRAM Committee on Solar and Space Physics National Research Council Space Studies
More informationImproved polar HF propagation using nowcast and forecast space weather parameters
in 10 th International Ionospheric Effects Symposium, May 7-9, 2002, ed. J.M. Goodman, 364-371 1 Improved polar HF propagation using nowcast and forecast space weather parameters W. Kent Tobiska, Space
More informationJPL ANOMALY ISSUES. Henry B. Garrett Jet Propulsion Laboratory California Institute of Technology Pasadena, CA, 91109
JPL ANOMALY ISSUES Henry B. Garrett Pasadena, CA, 91109 Space Weather Anomaly Concerns for JPL Robotic Mission AGENDA Overview of Space Weather Anomalies on JPL Missions Space Weather Products used by
More informationPrecession of spin and Precession of a top
6. Classical Precession of the Angular Momentum Vector A classical bar magnet (Figure 11) may lie motionless at a certain orientation in a magnetic field. However, if the bar magnet possesses angular momentum,
More informationSolar Wind: Theory. Parker s solar wind theory
Solar Wind: Theory The supersonic outflow of electrically charged particles, mainly electrons and protons from the solar CORONA, is called the SOLAR WIND. The solar wind was described theoretically by
More informationJustin C. Kasper Harvard-Smithsonian Center for Astrophysics 2012 Heliophysics Summer School Boulder, CO
The Solar Wind Justin C. Kasper Harvard-Smithsonian Center for Astrophysics 2012 Heliophysics Summer School Boulder, CO Goals Origin of the solar wind Historical understanding of the solar wind Why study
More informationPhysics 9e/Cutnell. correlated to the. College Board AP Physics 1 Course Objectives
Physics 9e/Cutnell correlated to the College Board AP Physics 1 Course Objectives Big Idea 1: Objects and systems have properties such as mass and charge. Systems may have internal structure. Enduring
More information