Microwave Emissivity Measurements of Bubbles and Foam
- 1 October 1971
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Geoscience Electronics
- Vol. 9 (4) , 221-224
- https://doi.org/10.1109/tge.1971.271504
Abstract
Measurements were made in the laboratory of the emissivities of a variety of bubble and foam samples at a wavelength of 3.2 cm. The technique was an active one in which the absorptivities of the samples were determined. Both free-space and waveguide measurements were made, and emissivities were found to be near 0.6 for some single-layer bubble rafts and near 1.0 for mixed foams of 3- to 4-mm thickness. These measurements support the previously expressed belief that it should be possible to infer sea state and approximate wind speed from passive microwave measurements interpreted in percentage of foam coverage.Keywords
This publication has 3 references indexed in Scilit:
- Passive microwave measurements of the sea surfaceJournal of Geophysical Research, 1970
- Microwave radiometry of the ocean and the possibility of marine wind velocity determination from satellite observationsJournal of Geophysical Research, 1969
- Microwave detection of precipitation over the surface of the oceanJournal of Geophysical Research, 1968