Submarine fresh water outflow detection with a dual-frequency microwave and an infrared radiometer systemSince infrared measurements are only very slightly affected by whitecap and banking angle influences, the combined multifrequency radiometric signatures of the L-band, the S-band, and an infrared radiometer are used in identifying freshwater outflows (submerged and superficial). To separate the river and lagoon outflows from the submarine outflows, geographical maps with a scale of 1:100,000 are used. In all, 44 submarine freshwater springs are identified. This is seen as indicating that the submarine freshwater outflow locations are more numerous around the island than had earlier been estimated. Most of the submarine springs are located at the northwest and southeast portion of the Puerto Rican coastline; the success in detecting the submarine springs during both missions at the northwest portion of the island is 39%. Salinity and temperature distribution plots along the flight path in longitude and latitude coordinates reveal that runoff direction can be determined.
Document ID
19820063974
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Blume, H.-J. C. (NASA Langley Research Center Hampton, VA, United States)
Kendall, B. M. (NASA Langley Research Center Hampton, VA, United States)
Fedors, J. C. (NASA Langley Research Center Hampton, VA, United States)