themi gbo meeting 1 ucb 06/02/2003 themis ground based observatories s. b. mende
TRANSCRIPT
THEMI GBO meeting 1 UCB 06/02/2003
THEMIS Ground Based Observatories
S. B. Mende
THEMI GBO meeting 2 UCB 06/02/2003
Ground Based Observatories
THEMIS GBO heritage
• IMAGE satellite FUV imager system;
• ROCSAT-2 ISUAL imager;
• NSF’s Automatic Geophysical
Observatories ( All Sky Imagers in
Antarctica)
IMAGE FUV
ISUAL
PENGUIN-ASI
THEMI GBO meeting 3 UCB 06/02/2003
• Each GBO has an all sky imager (ASI) and -as necessary- a ground magnetometer (GMAG).
• Sites have existing infrastructure (some have GMAGs).
• GBOs cover North American sector.
• GBOs satisfy L1 requirements of t-res (<10s), density/extent (1/MLT; >8GLT) with high margins (>2).
• Supplemented by existing Canadian& Alaskan magnetometers (densercoverage) and intl. networks (extendedMLT coverage).
• 20 GBO sites in Canada and Alaska.
• 10 Education and Public Outreachground magnetometers (EPO/GMAGs)in the US, under EPO program mngt.
GBOs: A synoptic view of the aurora
THEMI GBO meeting 4 UCB 06/02/2003
GBOs: A synoptic view of the aurora
Global auroral image taken by IMAGE WIC. Proposed THEMIS ground sites.
THEMI GBO meeting 5 UCB 06/02/2003
GBOs: A synoptic view of the aurora
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1312
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THEMIS
(2006)
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THEMI GBO meeting 6 UCB 06/02/2003
• Environmental protection/deployment and automation drawn from AGOs (flawless multi-year operation in Antarctica).
• Prototype camera field tested in Canada
– High cadence, high sensitivity
– 1.8Mbits/s taking 3s images
GBO/ASIs: Based on AGOs
THEMI GBO meeting 7 UCB 06/02/2003
• Primary science data daily via VSAT
Stream #1 (1.4kbps)
• Monthly backups via disk swapping
Stream #2 (180 kbps)
THEMI GBO meeting 8 UCB 06/02/2003
THEMI GBO meeting 9 UCB 06/02/2003
Ground Based Observatories
S. Mende, UCB• GBO management• GBO I&T• Data dissemination
Ground Based Observatories
S. Mende, UCB• GBO management• GBO I&T• Data dissemination
ASIsS. Mende, UCB
ASIsS. Mende, UCB
Install/Maintain/RetrieveE. Dovovan, UC
Install/Maintain/RetrieveE. Dovovan, UC
GBO-GMAGsC. T. Russell, UCLA
GBO-GMAGsC. T. Russell, UCLA
EPO OfficerN. Craig, UCBEPO OfficerN. Craig, UCB
EPO-GMAGsC. T. Russell, UCLA EPO-GMAGsC. T. Russell, UCLA
GBO team roles based on heritage
• Common I&T at UCB before shipment to sites
• ASIs, the largest part of effort (UCB)
• GBO-GMAG (UCLA) boards plug into computer in common housing
• Fielding in Canada and logistical support is Canadian responsibility
• Alaskan sites is UCB responsibility
• EPO-GMAGs (copy of existing units) under EPO management