Method for Extracting Tidal and Inertial Motion from ARGOS Ice Buoys Applied to the Barents Sea during CEAREX.

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Abstract:

A harmonic analysis of tidal and inertial action was applied to observations of position of ARGOS buoys deployed on drifting multiyear sea ice in the Eastern Arctic-Barents Sea during CEAREX 1988-89. An ARGOS positioning-data screening protocol was developed and constructed using a constrained least squares algorithm for separate estimation of tidal and inertial currents. The analysis provided estimates of individual tidal components at 15-day intervals along the sea ice buoy drift tracks. The technique shows a reasonable qualitative distinction in current components at nearby semi-diurnal frequencies. Estimates of errors due to sampling and collinearity are derived directly from model statistics. Estimates of velocity produced from the unequally time-based data are then used for interpolation to a regular time grid for spectral analysis. Computed velocities up to 70 ca s-I for M2 tidal notion over Spitsbergen Bank southeast of Svalbard are in close agreement with the regional tidal model of Gjevik, et al. 1990, 1993.

Author(s):
Turet, P. ; Pease, C. H. ; Pritchard, R. S. ; Overland, J. E.
Author Organization(s):
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION SEATTLE WA PACIFIC MARINE ENV IRONMENTAL LABS
Descriptive Note:
Technical memo.,
Supplementary Note:
Prepared in cooperation with Joint Inst. for the Study of the Atnosphere and Ocean, Seattle, WA.. and IceCasting, inc., Seattle, WA.
Pagination:
0068

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NOAA-TM-ERL-PMEL-99
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_6_Net Centric; JCA_1.2.7_Experimentation; JCA_6.4.1_Secure Information Exchange; JCA_1_Force Support; JCA_6.3.3_Spectrum Management; JCA_1.2_Force Preparation; JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_6.4_Information Assurance; JCA_6.2.1_Information Sharing; JCA_6.2.2_Computing Services; JCA_6.3_Net Management; JCA_6.1_Information Transport; JCA_1.2.3_Educating; JCA_4.1_Deployment and Distribution; JCA_6.2_Enterprise Services; JCA_4_Logistics
Modernization Areas:
Space
Communities of Interest:
Space
Descriptor(s):
*TIDAL CURRENTS, VELOCITY, ALGORITHMS, DEPLOYMENT, GRIDS, STATISTICS, MOTION, ESTIMATES, DRIFT, ICE, ERRORS, INTERPOLATION, LEAST SQUARES METHOD, ARTIFICIAL SATELLITES, SAMPLING, EXTRACTION, INERTIAL SYSTEMS, BARENTS SEA, SPECTRUM ANALYSIS, CURRENTS, SEA ICE, BUOYS, HARMONIC ANALYSIS
Field(s)/Group(s):
Physical and Dynamic Oceanography, Hydrology, Limnology and Potamology
Report Date:
1993 Apr 01
Creation Date:
1997 Sep 10