Aurora/airglow imaging observations in the polar cap region

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Presentation transcript:

Aurora/airglow imaging observations in the polar cap region K. Shiokawa Solar-Terresrial Environment Laboratory, Nagoya Univ. K. Hosokawa The University of Electro-communications

Optical Mesosphere Thermosphere Imagers (OMTI) Athabasca (OMTI) 70o 80o Resolute (OMTI/UEC) Eureka (planned in 2015, OMTI/UEC) Tromsoe (OMTI) MLAT/MLON map New camera at Eureka, near the magnetic north pole

Eureka, Canada (planned in 2015) Site used by Canadian university and government joint project (PEARL)

Camera Operation Resolute Bay (RSB) : (74.7N, 265.1E) All-Sky Imager #6 (Jan.9, 2005-) OI (557.7nm, 30s), OI (630.0nm, 30s), OH-bands(2s), Na (589.3nm, 30s) : every 2min OI (777.4nm, 45s) : every 20 min Collaborators Resolute Bay (RSB): John D. Kelly (SRI International) Eric Donovan (University of Calgary) Eureka (EUR): William Ward (University of New Brunswick)

Convection velocity estimated from the polar-cap patch drift Hosokawa et al. (GRL, 2006) Adding Eureka and Eric’s REGO sites will allow doing this in a much wider scale.

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All-sky Airglow/Aurora Imager with Cooled-CCD Camera sensitive to a few Rayleighs

http://stdb2.stelab.nagoya-u.ac.jp/omti/index.html These camera are operated when the moon is under the horizon and the sun is below -12 degree under the horizon.

Athabasca (OMTI) Resolute (OMTI/UEC) Eureka (planned in 2015, OMTI/UEC) Tromsoe (OMTI) MLAT/MLON map

Camera Operation Resolute Bay (RSB) : (74.7N, 265.1E) All-Sky Imager #6 (Jan.9, 2005-) OI (557.7nm, 30s), OI (630.0nm, 30s), OH-bands(2s), Na (589.3nm, 30s) : every 2min OI (777.4nm, 45s) : every 20 min Collaborators Resolute Bay (RSB): John D. Kelly (SRI International) Eric Donovan (University of Calgary) Eureka (EUR): William Ward (University of New Brunswick)

Resolute Bay, Canada all-sky imager

polar cap patch drift

Convection velocity estimated from the polar-cap patch drift Hosokawa et al. (GRL, 2006)

Good correlation with IMF Bz and By Bz and convection velocity By and convection angle Hosokawa et al. (GRL, 2006)

Eureka, Canada (planned in 2015)