In-Situ Measurements Of The Optical Properties Of Arctic Sea Ice

Gary D. Gilbert; Rod R. Buntzen

doi:10.1117/12.964240

7 August 1986 In-Situ Measurements Of The Optical Properties Of Arctic Sea Ice

Gary D. Gilbert, Rod R. Buntzen

Proceedings Volume 0637, Ocean Optics VIII; (1986) https://doi.org/10.1117/12.964240
Event: 1986 Technical Symposium Southeast, 1986, Orlando, United States

Abstract

Recent interest in the Arctic has led to the application of underwater irradiance measurement techniques to the determination of sea ice optical properties. Both a theoretical model of the bulk optical properties and in-situ instrumentation for the measurement of these properties was developed at the University of Washington in support of field measurements in the Marginal Ice Zone (MIZ). In order to extend the existing data base to higher latitudes and evaluate the technique for making optical measurements in this environment, the authors participated in a short exercise in the Arctic during April 1985, using University of Washington developed instruments. During a period of three weeks, numerous measurements of the spectral attenuation coefficient, k_ice, and albedo, r_ice, were made in refrozen leads of first year ice and new sea ice near the coordinates 86 degrees north and 88 degrees west. Ice thicknesses ranged from 30 to 300 cm. In addition to the optical properties, cores were taken to photograph ice crystal structure and measure the temperature profile. A description of the ice optical property measurement techniques and instrumentation is given. In addition to field measurements of the bulk optical properties of young ice at very low temperatures, data was obtained on the optical properties of the near surface water found in the higher Arctic latitudes during April. Recommendations are made for further field measurements and the use of models in data interpretation.

Citation Download Citation

Gary D. Gilbert and Rod R. Buntzen "In-Situ Measurements Of The Optical Properties Of Arctic Sea Ice", Proc. SPIE 0637, Ocean Optics VIII, (7 August 1986); https://doi.org/10.1117/12.964240

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