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Satellite evidence of harmful algal blooms and related oceanographic features in the Bohai Sea during autumn 1998

Tang, D. and Kawamura, H. and Oh, I.S. and Baker, J. (2006) Satellite evidence of harmful algal blooms and related oceanographic features in the Bohai Sea during autumn 1998. Advances in Space Research, 37 (4). pp. 681-689.

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Article Link(s): http://dx.doi.org/10.1016/j.asr.2005.04.045

Publisher URL: http://www.elsevier.com

Abstract

Harmful algal blooms (HABs) are truly global marine phenomena of increasing significance. Some HAB occurrences are different to observe because of their high spatial and temporal variability and their advection, once formed, by surface currents. A serious HAB occurred in the Bohai Sea during autumn 1998, causing the largest fisheries economic loss. The present study analyzes the formation, distribution, and advection of HAB using satellite SeaWiFS ocean color data and other oceanographic data. The results show that the bloom originated in the western coastal waters of the Bohai Sea in early September, and developed southeastward when sea surface temperature (SST) increased to 25-26 °C. The bloom with a high Chl-a concentration (6.5 mg m-3) in center portion covered an area of 60 × 65 km2. At the end of September, the bloom decayed when SST decreased to 22-23 °C. The HAB may have been initiated by a combination of the river discharge nutrients in the west coastal waters and the increase of SST; afterwards it may have been transported eastward by the local circulation that was enhanced by northwesterly winds in late September and early October.

Item Type:Article
Additional Information:© COSPAR.
Keywords:Bohai Sea; China; Chl-a; harmful algal bloom (HAB); oceanographic feature; satellite remote sensing; SeaWiFS.
Subjects:Aquaculture and Fisheries > Fisheries > Algae and algae culture
Aquaculture and Fisheries > Fisheries > Fishery oceanography. Hydrologic factors
Deposited On:23 Jan 2009 05:46
Last Modified:06 Sep 2010 05:49

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