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Record Details

Record 29 of 1634
Coastal pollution hazards in southern California observed by SAR imagery: stormwater plumes, wastewater plumes, and natural hydrocarbon seeps
External Online Source: doi:10.1016/j.marpolbul.2004.07.016
Author and Affiliation:
Digiacomo, Paul M.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA United States)
Washburn, Libe
Holt, Benjamin
Jones, Burton H.
Abstract: Stormwater runoff plumes, municipal wastewater plumes, and natural hydrocarbon seeps are important pollution hazards for the heavily populated Southern California Bight (SCB). Due to their small size, dynamic and episodic nature, these hazards are difficult to sample adequately using traditional in situ oceanographic methods. Complex coastal circulation and persistent cloud cover can further complicate detection and monitoring of these hazards. We use imagery from space-borne synthetic aperture radar (SAR), complemented by field measurements, to examine these hazards in the SCB. The hazards are detectable in SAR imagery because they deposit surfactants on the sea surface, smoothing capillary and small gravity waves to produce areas of reduced backscatter compared with the surrounding ocean. We suggest that high-resolution SAR, which obtains useful data regardless of darkness or cloud cover, could be an important observational tool for assessment and monitoring of coastal marine pollution hazards in the SCB and other urbanized coastal regions.
Publication Date: Dec 01, 2004
Document ID:
20050148852
(Acquired Apr 12, 2005)
Subject Category: ENVIRONMENT POLLUTION
Document Type: Journal Article
Publication Information: Marine pollution bulletin (ISSN 0025-326X); Volume 49; 11-12; 1013-24
Publisher Information: United Kingdom
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COASTS; ENVIRONMENTAL MONITORING; HAZARDS; HYDROCARBONS; OCEANOGRAPHY; PLUMES; RADAR; WASTE WATER; WATER CURRENTS; WATER POLLUTION; CALIFORNIA; CLIMATE; COMPUTER TECHNIQUES; IMAGE ANALYSIS; SURFACTANTS
Other Descriptors: ENVIRONMENTAL MONITORING/INSTRUMENTATION/METHODS; OCEANOGRAPHY/METHODS; RADAR; WATER MOVEMENTS; WATER POLLUTANTS/ANALYSIS; CALIFORNIA; CLIMATE; COMPARATIVE STUDY; IMAGE INTERPRETATION, COMPUTER-ASSISTED; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, P.H.S; SURFACE-ACTIVE AGENTS/CHEMISTRY
Availability Source: Other Sources
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