Investigation of Ice Dynamics in the Marginal Ice Zone.

• Main Author: Leppaeranta,Matti
• Other Authors: MARINE RESEARCH INST HELSINKI (FINLAND)
• Format: Text
• Language: English
• Published: 1985
• Subjects: Physical and Dynamic Oceanography; Snow; Ice and Permafrost; *ICE; *SEA ICE; KINEMATICS; VELOCITY; STATIONS; MEASUREMENT; OCEAN CURRENTS; MODELS; DYNAMICS; EDGES; DEFORMATION; MOTION; RATES; DRIFT; MEAN; OCEANS; FLUID DYNAMICS; TRAJECTORIES; OCEAN MODELS; GREENLAND SEA; DIRECTIONAL; TRANSPONDERS; ICEBERGS; Ice floes; Marginal ice zones; MIZEX-83 Project; Current meters; Greenland; Greenland Sea; Ice; permafrost; Sea ice
• Online Access: http://www.dtic.mil/docs/citations/ADA164364; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA164364

MIZEX-83 was a pilot study program in the Greenland Sea where ice kinematics data could be collected for about ten days. Ocean current measurements were simultaneously made beneath the same ice floes as we had transponders for the ice kinematics at three stations study. The currents were measured with Aanderaa current recorders giving the mean absolute speed and instantaneous direction at ten-minute intervals. The ice kinematics data describe relative motion between the stations. Thus in comparing ice and current kinematics we consider the relative motion, i.e. spatial fluctuations of velocity between two stations and the rate of deformation given by the three stations. The active role of ice in the ice-ocean system has a consequence that an ocean dynamics model for the ice margin problems should have an advanced ice dynamics model coupled with it. The ice motion was also measured with Argos satellite buoys. They are very good for measuring trajectories. Keywords: Ice floes; Drift.