Ice Drift in Robeson Channel as Determined Using Television Moving Target Circuitry.

The movement of ice floes in Robeson Channel was followed over a one-week period during August 1973 using television moving-target circuitry from a cliffside base 350 m above sea level. The basis of the method was to subtract a current TV picture from a video tape recording of the same scene made so...

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Bibliographic Details
Main Authors: Henderson,I. H. S., Paquet,F.
Other Authors: DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
Format: Text
Language:English
Published: 1974
Subjects:
Physical and Dynamic Oceanography
Snow
Ice and Permafrost
*DRIFT
*SEA ICE
MEASUREMENT
OCEAN CURRENTS
CANADA
WIND
TRACKING
TIDAL CURRENTS
ARCTIC REGIONS
GREENLAND
MOVING TARGET INDICATORS
TELEVISION CAMERAS
CLOSED CIRCUIT TELEVISION
ELLESMERE ISLAND
VIDEO TAPE RECORDING
*Robeson Channel
Arctic
Canada
Ellesmere Island
Greenland
Robeson Channel
Ice
permafrost
Robeson channel
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA010397
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA010397
Description
Summary:The movement of ice floes in Robeson Channel was followed over a one-week period during August 1973 using television moving-target circuitry from a cliffside base 350 m above sea level. The basis of the method was to subtract a current TV picture from a video tape recording of the same scene made some time previously, the difference imagery being displayed on a monitor. The TV camera was aimed to produce coincidence of a reference point selected near the center of the pre-recorded imagery, and the changes in azimuth and elevation recorded. From these, ice drift velocities were calculated. Errata sheet inserted.

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