Optical backscattering measurements off the coast of Hawaii

Jeffrey M. Voss; Jeffrey H. Smart

doi:10.1117/12.190054

26 October 1994 Optical backscattering measurements off the coast of Hawaii

Jeffrey M. Voss, Jeffrey H. Smart

Proceedings Volume 2258, Ocean Optics XII; (1994) https://doi.org/10.1117/12.190054
Event: Ocean Optics XII, 1994, Bergen, Norway

Abstract

In a recent sea test, measurements of the volume scattering function (VSF) of clear sea water in situ at several angles were made. These measurements used the APL backscattering sensor, which measures the VSF at 170 degree(s); the SRI Beta Pi sensor, which measures the VSF from 179 degree(s) to 180 degree(s); and the SRI backscattering sensor, which measures the VSF at a mean scattering angle of 150 degree(s). The intention of the testing was to quantify the enhanced backscattering feature at 180 degree(s) relative to the scattering at more traditionally measured angles of the VSF. Measurements were made in both clear ocean water and Hawaiian coastal waters. Analysis of the data has been combined with subsequent laboratory instrument intercomparisons to demonstrate that in clear ocean water there is relatively little enhanced backscattering, whereas in more turbid coastal water the feature is pronounced and is clearly higher than the VSF at 170 degree(s). Field data, including vertical profiles of optical backscatter in clear and coastal waters, are shown.

Citation Download Citation

Jeffrey M. Voss and Jeffrey H. Smart "Optical backscattering measurements off the coast of Hawaii", Proc. SPIE 2258, Ocean Optics XII, (26 October 1994); https://doi.org/10.1117/12.190054

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