international conference on comparative planetology: venus - earth - mars estec, noordwijk, the...
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International Conference on Comparative Planetology: Venus - Earth - Mars ESTEC, Noordwijk, The Netherlands, Thursday 14 May 2009 17:10:00, Abstract #1627645
COMPARATIVE AUTOMATED MULTI-DATASET ANALYSIS OF THE MARTIAN AND VENUSIAN
TIME-VARIABLE PLASMA ENVIRONMENTS
N. André1,2, C. Jacquey1,2, A. Fedorov2, E. Budnik3, V. Génot1,2, C. Ferrier2, C. Mazelle2, B. Cecconi4, E. Penou2, T. L. Zhang5, H. Rucker5, M. Khodachenko5, W. Baumjohann5, H. Lammer5, M. Volwerk5, R. Nakamura5, F. Topf5, J.-A. Sauvaud2, S. Barabash6, and R. Lundin6
1CDPP, CNRS/Université Paul Sabatier, 9, avenue du colonel Roche, 31028 Toulouse, France ([email protected])2CESR, CNRS/Université Paul Sabatier, 9, avenue du colonel Roche, 31028 Toulouse, France
3NOVELTIS, 2 Avenue Europe, 31520 Ramonville Saint Agne, France 4Space Research Institute, Austrian Academy of Sciences, OAW, Graz, Austria
5LESIA, Observatoire Paris Meudon, Meudon, France 6Swedish Institute of Space Physics, S-98 128, Kiruna, Sweden
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OUTLINE
1. Context
CDPP, the french Space Plasma Physics Data CenterAMDA, Automated Multi-Dataset AnalysisEuroplanet IDIS and Planetology VO AMDA VEX and MEX Data PrototypeVenus, Earth and Mars magnetospheres
2. A Few Scientific Illustrations (Method)
Boundary IdentificationCurrent Sheet CrossingsPlanetary Space Weather
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CDPP, the french Plasma Physics Data Center (CNRS/CNES)
Hosted at CESR, Toulouse, France
http://cdpp.cesr.fr
Its Missions:
1) Data Archive (long-term preservation)
2) Data Valorization
• Making data easy to use• Providing tools and services
3) Participation to Virtual Observatories
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AMDA (Automated Multi-Dataset Analysis) Functionalities
Web-based facility for online analysis of space physics data
http://cdpp-amda.cesr.fr
Prototype
Automated access to data
the user plays with parameters, not with data files
Produces and exploits time-tables
Its 7 functionalities allow to use and couple these two objects
1. Visualization editor
3. Parameter editor
2. Download data
5.Visual search
4. External data
6. Conditional search
7. Time-Table manager
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Europlanet IDIS (Integrated & Distributed Information System)
Plasma Nodehttp://europlanet-plasmanode.oeaw.ac.at/
5 thematic nodes and 1 technical node
Its objective:
Develop Virtual Observatory tools
In order to access data from
laboratory measurements ground+spaced-based observations modeling results
allowing comparative and pluri-disciplinary studies of planetary objects and environments
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Towards a prototype of Virtual Observatory in Planetology?
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CDPP/AMDA Local and Remote Data Access
CESR, FranceMirror site
LESIA, France
GSFC, USA
IWF, Austria
CESR, France
IC/QM, UK
CESR, France Mirror site
PerspectivesHeliosphere
MagnetospherePlanetary environments
ClusterInterballGeotail…
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AMDA VEX/MEX Data PrototypeVEXGRAZ (remote, from Tielong Zhang)
MAG (Bx, By, Bz) VSO 4 s
VEX/ ASPERA (local, from Andrei Fedorov)TRAJ (X, Y, Z) VSO 60 sIMA
spectra heavy ions 192 sspectra protons 192 smoments heavy ions 192 smoments protons 192 s
ELS spectra 4 s
MEX/ ASPERA (local, from Andrei Fedorov)TRAJ (X, Y, Z) MSO 60 sIMA
spectra heavy ions 192 sspectra protons 192 s
ELS spectra 4 s
Caution!(3-axis stabilized)
Rules of the road apply !
Caution!(cleanliness)
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Venus, Earth, and Mars Magnetospheres
Magnetic field no yes crustalAtmosphere yes yes small
Solar wind properties @ 0.72, 1 & 1.5 UA
Key Features:
1) Various plasma populations (E/compo)
Different regions/boundaries
2) ‘Universal’ structure (e.g., current sheet)
3) SW / magnetosphere interactions
Venus / Earth / Mars
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AMDA Functionality #1: Visualization Editor
Par
amet
erSe
lecti
on
Plot Composer
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Venus (VEX) Earth (THEMIS) Mars (MEX)
No magnetometer
No mass resolution
AMDA Functionality #1: Visualization Editor
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Illustration 1: Boundary Detection
Venus
Earth
Mars
Bow Shock (BS)Where the solar wind is slowed down and heated
Ion Composition Boundary (ICB)Where the thermal plasma of the ionosphere is separated from the hot magnetosheath plasma
Vanishing of solar wind protons Appearance of planetary ions Disappearance of energetic electrons Presence of a Magnetic ‘barrier’
Magnetopause (MP)Where the geomagnetic field and plasma of primarily terrestrial origin are separated from solar-wind plasma
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Illustration 1: BS Detection at the Earth
Building parameters:
Conditional search:
2
60
60
χB
dB
dtB
2
χV
dV
dtV
B > 5.10-7
AND V > 5.10-7 AND R > 10 RE
Time Table of BS crossings
Jacquey et al., 2008
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AMDA Functionality #3: Parameter Editor
2
χV
dV
dtV
CE1_E2
C
C
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Illustration 1: BS Detection at Mars/Venus
?
?
Finding the ‘ultimate‘ criteria!
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AMDA Functionality #6: Conditional Search
R < 3&
R>1.5&
X<0&
Abs(Y)/abs(X) < 0.5&
Bx(t) times Bx(t+60s) < 0
Time Table cs_crossing_vex created
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AMDA Functionality #7: Time-Table Manager
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Illustration 2: Current Sheet Crossings
Venus Earth
R>6.6 & X<0 & abs(Y)/abs(X) < 0.5Bx(t) times Bx(t+60s) < 0
One of the 3 time intervals in the Time Table
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Illustration 3: SEP Events Event from Futaana et al., 2008
08/12/2006
The X9-class solar flare of Dec. 5, 2006, observed by the Solar X-Ray Imager aboard NOAA's GOES-13 satellite
AMDA Functionality #4: External Data
CDAweb
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Illustration 3:ICMEs
Event from Zhang et al., 2008
Venus
Low Mach number solar wind
18 BS crossings reportedAtypical Compressed effective obstacle
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14/11/2007
Illustration 3:ICMEs
http://aten.igpp.ucla.edu/cgi-bin/stereo_PLASTIC_MAG_LEVEL2
• STEREO MAG and PLASTIC data (1 min)• Level 3: Event lists (ICMEs)
Earth
Venus, Stereo A, MarsRadial alignment
http://stereo-ssc.nascom.nasa.gov/
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Illustration 3:ICMEs
Stereo AStereo BACE
MAG data
2007 11/19 22:002007 11/21 03:17
field rotation, heliospheric current sheet crossing
Earth
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AMDA Functionality: Solar Wind Virtual Monitor
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Illustration 3:ICMEs Venus Mars
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CONCLUSIONS• CDPP/AMDA (Automated Multi-Dataset Analysis) is public
http://cdpp-amda.cesr.fr
• Still a prototype but you are invited to use it (It will be open at the end of this year)
• Including other Martian datasets (locally or remotely) if possible
• Future connections with IVOA tools like Aladin under study (giant planet auroral emissions, HST observations)
EuroPlaNet IDISPlasma Node
activities
PERSPECTIVES
Online demonstration during the poste
r sessio
n