Accession Number:

ADA010397

Title:

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

Descriptive Note:

Technical note,

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s):

• Henderson,I. H. S.
• Paquet,F.

Report Date:

1974-03-01

Pagination or Media Count:

17.0

Abstract:

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.

Descriptors:

• *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

Subject Categories:

• Physical and Dynamic Oceanography
• Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE