Mapping the pollutants in surface riverine flood plume waters in the Great Barrier Reef, Australia

Devlin, M.J.;McKinna, L.W.;Alvarez-Romero, J.G.;Petus, C.;Abott, B.;Harkness, P.;Brodie, J.

Abstract

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.

Journal

Marine Pollution Bulletin

Publication Name

N/A

Volume

ISBN/ISSN

1879-3363

Edition

N/A

Issue

4-9

Pages Count

Location

N/A

Publisher

Elsevier

Publisher Url

N/A

Publisher Location

N/A

Publish Date

N/A

Url

N/A

Date

N/A

EISSN

N/A

DOI

10.1016/j.marpolbul.2012.03.001