themis/gbo cdr peer review themis – a canadian perspective eric donovan – university of calgary...

THEMIS/GBO CDR Peer Review

THEMIS – A Canadian Perspective

Eric Donovan – University of Calgary

April 26, 2004

THEMIS/GBO CDR Peer Review

THEMIS – A Canadian Perspective

1. A brief history of substorm work in Canada2. Canadian GeoSpace Monitoring3. A Canadian’s take on the THEMIS mission concept4. Coverage of the region where onsets occur5. Data from the ASI prototype6. A few thoughts on the data7. THEMIS-C tasks

THEMIS/GBO CDR Peer Review 3 Univ.of Calgary, Apr. 26-27, 2004

A Canadian Perspective

From Atkinson, JGR, 1967.



A brief history of substorm work in Canada:1. Current disruption & the substorm current wedge (Atkinson)2. The phenomenology of the negative H bay, wedge, etc (Rostoker)3. Substorm onset embedded deep within the CPS (Murphree, Elphinstone)4. Substorm onset in an arc embedded in the bright proton aurora (Samson)5. Role of ballooning in onset (Samson, Voronkov)6. Global vs local stretching (Jayachandran, Donovan)7. Possible role of ionospheric oxygen in the substorm (Cully)8. Onset arc sometimes not pre-existing (Lyons, Voronkov)9. Many many other contributions (graduate work, etc)

The substorm is high priority problem in Canada:1. One of five “grand-challenge” problems in CGSM2. THEMIS-C3. ICS-8



Present

40 Fluxgates41 Riometers42 MSPs4 ASIs2 HF Radars4 CADIs

F10.7 Solar Flux Monitor FDAM/SSDP

Canadian GeoSpace Monitoring

CSA Project based primarily in 4 universitiesWell funded for operations & infrastructureHeritage is CANOPUS but it is much more



40 Fluxgates41 Riometers42 MSPs10 ASIs3-4 HF Radars6-8 CADIs8 Induction Coils

F10.7 Solar Flux Monitor FDAM/SSDP

Future

Canadian GeoSpace Monitoring

Real-time data collectionOpen data policyIntegrated modelling & assimilation program


The ASI array provides a means of following CPS dynamics.

caveat

Information provided by this array is subjectto our understanding of the mapping and the relationship between CPS processes and theirauroral counterparts.




Onset Region

Fractional Coverage of onset region.



Fractional Coverage of onset region.



Data Courtesy K. Liou.


N ASI FOV

THEMIS ASI prototype has

been operating at the AUGO

since May 2003.




557 nm Gillam ASI data – Full (200X200) resolution

557 nm Gillam ASI data – Summary (20X20) thumbnail



MetadataKeograms and other summary dataAttributesGeophysical quantities


Our contributions – Implementation Phase

1. Deploy 16 GBOs2. Operate 16 GBOs3. Real-Time (RT) data retrieval from 16 GBOs4. Develop & maintain THEMIS-C website5. Develop scientific data products that are visually appealing6. Integrate RT data into summary & housekeeping web displays7. Maintain online archive of entire image data set8. Ensure flow through of UCLA magnetometer data9. Science (Substorms, Storms, Aurora, Machine Vision,….)

SWARMMikko


themis/gbo cdr peer review themis – a canadian perspective eric donovan – university of calgary...

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