| Autor: |
J. Ronald V. Zaneveld, W. Scott Pegau |
| Rok vydání: |
2000 |
| Předmět: |
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| Zdroj: |
Cold Regions Science and Technology. 31:33-46 |
| ISSN: |
0165-232X |
| DOI: |
10.1016/s0165-232x(00)00004-5 |
| Popis: |
A new technique for measuring the light field within sea ice has been developed and deployed in first and multiyear ice. Portions of the radiance distribution are determined by profiling a 3° field-of-view radiance head at a number of zenith and azimuth angles. Results from two sampling periods conducted in 1995 are presented. We find that the radiance distribution is not isotropic. The light field nearly reaches the asymptotic state within the first 0.25 m, but small-scale ice structure prevents the asymptotic state from being fully achieved. We use the nearly asymptotic radiance distribution to estimate the inherent optical properties of the ice and find fair agreement with previously reported results. The spectral attenuation coefficients derived from the radiance measurements are in good agreement with previously determined values. The influence of particulate inclusions on the attenuation spectrum is also demonstrated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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