STUDIES OF ICE MOVEMENTS ON THE WARD HUNT ICE SHELF BY MEANS OF TRIANGULATION-TRILATERATION

A method is described by which accurate measurements of ice movements were performed on the Ward Hunt Ice Shelf at Ward Hunt Island. Geodimeter distance measurements and angular theodolite measurements were combined in a system of triangulation-trilateration in the form of a chain of quadrilaterals...

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Bibliographic Details
Main Authors: Koneeny,G., Faig,W.
Other Authors: NEW BRUNSWICK UNIV FREDRICTON DEPT OF SURVEY ENGINEERING
Format: Text
Language:English
Published: 1965
Subjects:
Snow
Ice and Permafrost
(*ICE
DRIFT)
TRIANGULATION
SITE SELECTION
GLACIERS
ATMOSPHERIC TEMPERATURE
WIND
MOTION
TIDES
SURVEYING(GEOGRAPHIC)
OPTICAL INSTRUMENTS
MEASUREMENT
WARD HUNT ICE SHELF
Arctic
Hunt Island
Ward Hunt Ice Shelf
Ward Hunt Island
Ice
Ice Shelf
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0689627
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0689627
Description
Summary:A method is described by which accurate measurements of ice movements were performed on the Ward Hunt Ice Shelf at Ward Hunt Island. Geodimeter distance measurements and angular theodolite measurements were combined in a system of triangulation-trilateration in the form of a chain of quadrilaterals to achieve relative positioning accuracies of plus or minus 1 to 2 cm. for the survey markers drilled into the shelf ice. Shelf ice movements of 30 cm. with respect to solid ground were obtained between 1964 and 1965. The relative position change between the markers on shelf ice was less than 4 cm. Experience on this first known arctic application of the geodimeter are reported. (Author)

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