Accession Number : ADA134599

Title :   Investigation of Ice Dynamics in the Marginal Ice Zone.

Descriptive Note : Periodic rept. no. 3, 17 May-15 Sep 83,

Corporate Author : MARINE RESEARCH INST HELSINKI (FINLAND)

Personal Author(s) : Lepparanta,Matti

PDF Url : ADA134599

Report Date : 15 Sep 1983

Pagination or Media Count : 9

Abstract : Polarbjorn sailed from Bergen, Norway, on June 10. The total of about 30 scientists were aboard, mainly from the USA and Norway. During the experiment, the Arctic sea ice edge lay about zero meridian west of Svalbard and between the latitudes of 80 deg N and 81 deg N north of Svalbard. Oceanographic instruments were first deployed in the Fram Strait. Then the research area was selected for the so-called drifting phase when our ice kinematics measurements were to be made. During this phase, the ship was moored to an ice floe thus drifting with the ice. In the beginning the floe was situated at 81 deg 03 min N 6 deg E, about 30 km from the ice edge. Our ice kinematics study was carried through using the Del Norte microwave trisponder system. The accuracy of Del Norte measurements is three meters which is far better than in the earlier observations of ice deformation in the marginal sea ice zones. The drifting phase lasted from June 27 to July 8.

Descriptors :   *Sea ice, Greenland Sea, Dynamics, Kinematics, Motion, Drift, Measurement, Microwave equipment, Triangulation

Subject Categories : Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE