期刊
MARINE POLLUTION BULLETIN
卷 65, 期 4-9, 页码 224-235出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2012.03.001
关键词
River plume; Terrestrial runoff; Land-based threat; Pollutant exposure; MODIS images
资金
- Reef and Rainforest Center (RRRC)
- Great Barrier Reef Marine Park Authority (GBRMPA)
- Mexico's Consejo Nacional de Ciencia y Tecnologia (CONACYT)
- Secretaria de Educacion Publica (SEP)
- Australian Research Council Center of Excellence for Coral Reef Studies
The extent of flood plume water over a 10 year period was mapped using quasi-true colour imagery and used to calculate long-term frequency of occurrence of the plumes. The proportional contribution of riverine loads of dissolved inorganic nitrogen, total suspended sediments and qPhotosystem-II herbicides from each catchment was used to scale the surface exposure maps for each pollutant. A classification procedure was also applied to satellite imagery (only Wet Tropics region) during 11 flood events (2000-2010) through processing of level-2 ocean colour products to discriminate the changing characteristics across three water types: primary plume water, characterised by high TSS values; secondary plume water, characterised by high phytoplankton production as measured by elevated chlorophyll-a (chl-a), and tertiary plume water, characterised by elevated coloured dissolved and detrital matter (CDOM + D). This classification is a first step to characterise flood plumes. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
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