Updated Position and Ice Velocity for the Arctic Ice Dynamics Joint Experiment. (AIDJEX) Manned Camps.

During 1975 and 1976, measurements of sea ice motion were made as part of the Arctic Ice Dynamics Joint Experiment (AIDJEX). In an earlier report (Thorndike and Cheung, 1977), energy at the inertial period was attenuated by approximately 50% due to the choice of a low covariance factor, Q = 100, dur...

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Bibliographic Details
Main Authors: Thorndike,A S, Manley,T O
Other Authors: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES N Y
Format: Text
Language:English
Published: 1980
Subjects:
Snow
Ice and Permafrost
*DRIFT
*SEA ICE
VELOCITY
POSITION(LOCATION)
STATISTICAL DATA
KALMAN FILTERING
POSITION FINDING
TABLES(DATA)
STATISTICAL ANALYSIS
MANNED
GROUND STATIONS
RADIO NAVIGATION
BEAUFORT SEA
ARCTIC OCEAN
DOPPLER NAVIGATION
*AIDJEX project
WUNR307359
Arctic
Arctic Ocean
Beaufort Sea
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA082211
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA082211
Description
Summary:During 1975 and 1976, measurements of sea ice motion were made as part of the Arctic Ice Dynamics Joint Experiment (AIDJEX). In an earlier report (Thorndike and Cheung, 1977), energy at the inertial period was attenuated by approximately 50% due to the choice of a low covariance factor, Q = 100, during Kalman filtering. For Oceanographic investigations, the data set proved to be unacceptable particularly in the summer months when there is a significant amount of energy at the inertial period. This report is the result of the reprocessing of the original position data taken from the four manned camps (Caribou, Blue Fox, Snowbird and Big Bear) with a covariance factor Q = 100000. The higher Q allows data of the inertial period and longer to pass through the filter with less than 1 percent attenuation. Because of the large amount of information contained in the data set, it was divided into two parts. This report (Vol. 1) provides position and ice velocity from 11 April 1975 to 17 October 1975. Vol. 2 covers the remainder of the data, 18 October 1975 to 4 May 1976. (Author) See also AD-A082 212.

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