To better understand topography-dependent characteristics of suspended particulate matter (SPM) in a tropical shallow estuary during dry season, the physical factors causing an increase in SPM and the sources of SPM were investigated at the western coast of Thailand. Single and multiple regression analyses using physical parameters as independent variables indicated that periodic tidal current-driven resuspension, episodic wind-driven resuspension, and river-borne inputs were the most important factors controlling SPM increases in areas surrounded by sand bars, areas directly facing the ocean, and areas close to the river mouth, respectively. The assessment of the origin of increased SPM over the background levels estimated from the chemical signatures (delta(13)C and C/N ratio) at all investigated locations and for each event responsible for an increase in SPM confirmed the results of the multiple regression analyses. The results suggested that specific characteristics of SPM at each location were highly contributed by sedimentary materials and could be rather consistent through the season under similar weather conditions.
雑誌名
Marine environmental research
巻
68
号
2
ページ
59 - 70
発行年
2009-08
出版者
Elsevier
ISSN
01411136
書誌レコードID
AA00304736
PubMed番号
19439351
DOI
10.1016/j.marenvres.2009.04.004
権利
Copyright (c) 2009 Elsevier Inc. All rights reserved.
著者版フラグ
author
引用
Marine Environmental Research. 68(2), pp. 59-70; 2009
Physical and topographic factors affecting suspended particulate matter composition in a shallow tropical estuary.
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