Abstract：
:The Gulf of Kachchh (GoK) is situated in the northeastern Arabian Sea. The presence of several industries along its coastal belt makes GoK a highly sensitive coastal ecosystem. In the present study, an attempt is made for the first time to study GoK thermohaline structure and its variability, based on field measurements and model simulations. Though GoK is considered as a well-mixed system, the study reveals that only the central Gulf is well mixed. Vertical gradients in temperature and salinity fields are noticed in the eastern Gulf, where a cold and high saline tongue is observed in the subsurface layers. Salinity indicates the characteristic feature of an inverse estuary with low values (37.20 psu) near the mouth and high values (>40.0 psu) near the head of the Gulf. The model simulated temperature and salinity fields exhibit semidiurnal oscillations similar to that of field observations. Model results show cold, high saline waters advecting from the east during ebb forming a transition zone, which oscillates with tides. A high salinity tongue is seen in the bottom layer, indicating a westward flowing bottom current. The transient zone acts as an dynamic barrier, and plays a vital role in the pollutant transport.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Vethamony P,Babu MT,Ramanamurty MV,Saran AK,Joseph A,Sudheesh K,Padgaonkar RS,Jayakumar Sdoi
10.1016/j.marpolbul.2007.01.022subject
Has Abstractpub_date
2007-06-01 00:00:00pages
697-707issue
6eissn
0025-326Xissn
1879-3363pii
S0025-326X(07)00041-0journal_volume
54pub_type
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journal_title：Marine pollution bulletin
pub_type： 杂志文章
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更新日期：2004-10-01 00:00:00
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