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AMDA, Automated Multi-Dataset Analysis: A web-based service provided by the CDPP usable for THEMIS data exploitation. THEMIS SWT, Boulder March 23-25,

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Presentation on theme: "AMDA, Automated Multi-Dataset Analysis: A web-based service provided by the CDPP usable for THEMIS data exploitation. THEMIS SWT, Boulder March 23-25,"— Presentation transcript:

1 AMDA, Automated Multi-Dataset Analysis: A web-based service provided by the CDPP usable for THEMIS data exploitation. THEMIS SWT, Boulder March 23-25, 2009

2 The CDPP (http://cdpp.cesr.fr)  French national centre (CNRS-CNES) > 10 years  Hosted at CESR, Toulouse, France  Missions: -Archiving the data for long-term preservation -Valorisation of the data ·Making data easy to use ·Providing tools and services -Participation to Virtual Observatories

3 Databases used by AMDA CDAWEB (at Goddard) CASSINI MAPSKP (at CESR) SKR (at LESIA) THEMIS (at CDPP/CESR) VEX-MAG (at IWF/Graz) CAADARTSVxOs Others AMDA LOCAL DATABASE Collaboration in EUROPLANET Plasma Node (CDPP, IWF, CESR, LESIA)

4 AMDA Automated Mutiple Dataset Analysis  Prototype  Web based service  Transparent (automated) access to data  the user plays with parameters, not with files  Produces and exploits time-tables and catalogues Visualisation editor Parameter editor Download data Visual search External data Conditional search Time-Table manager AMDA DOES NOT WORK FULLY WITH InternetExplorer and Safari AMDA is public (http://cdpp-amda.cesr.fr),http://cdpp-amda.cesr.fr for either registred or guest users !

5 Visualisation (1)

6 Visual search Visualisation (2) AL Example: Generating a Time-Table of AL negative bay onsets for substorm studies

7 (Broussillon et al.) Detection of the magnetopause U = 1000 Building parameters: Conditional search: 8 < R < 17 R E U > 250 km/s Parameter computation Conditional search

8 An application for bow shock studies? Characterising the stationarity/unstationarity of the bow shock? Searching (1)shock crossing events with THEMIS (2)when the interplanetary medium is in “stationary conditions”, i.e. (a)the SW speed is constant or slowly varying (b) the IMF orientation is constant or slowly varying Performing case studies and/or statistical and/or systematic studies of these events

9 “Stationary interplanetary medium” ? Building parameters: Conditional search:  V < 0.05 AND  XY < 0.01 AND  XZ < 0.01 AND  YZ < 0.01  Time-Table TT1

10 Building parameters: Conditional search: Shock detection with THEMIS  B > 5.10 -7 AND  V > 5.10 -7 AND R > 10 R E  Time-Table TT2 Managing time-tables: TT1_2 = TT1 extended by 30 min and shifted by 45 min Intersection TT3 = TT2  TT1_2  TT3: Time-Table of potential “Shock crossings during quiet interplanetary conditions”

11 Visualisation TT3_extended

12 ACE (226, -112, 24) WIND (256, -51, 20)

13 Time-Table exchange CAA CL QSAS Sub-databases extraction CDAWeb THEMIS and Mirror DB DARTS Others Detailed analysis THEMIS Software Others AMDA Collaboration CDPP, CAA, Imperial College, CESR  standard for time-tables (VOtable)

14 SUMMARY AMDA is a “operational prototype” for integrated multi-dataset analysis: Comparison of data from several instruments/missions and coming from several sources Automated or visual search of specific events or features in the content of the data (see O. LeContel poster) Statistical/systematic studies AMDA is in continuously evolution There still are bugs The interface need improvements New functionalities in perspective (catalogues, propagation tool, …)  Need of user return AMDA is a public service funded by CNRS and CNES If you use it, please acknowledge in presentations/publications


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