Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/25082
Title: Geochemistry of continental shelf waters and sediments east coast of Tamilnadu bay of Bengal
Researcher: Nisha, V
Guide(s): Achyuthan, Hema
Keywords: Science and Humanities
biogeochemical
Continental
Geochemistry
Sediments
Shelf Waters
Upload Date: 16-Sep-2014
University: Anna University
Completed Date: n.d.
Abstract: Continental shelf studies are important in order to understand the newlinephysicochemical properties of sea water as well as biogeochemical systems newlineexisting in the marine environment Lying within the tropical zone the east newlinecoast Tamilnadu receives strong monsoonal rains and hence any variation in newlinethe intensity and amount of precipitation would reflect in the seawater and newlinesediment deposition characteristics along the continental shelf The present newlinestudy quantifies the spatial and vertical heterogeneity in the distribution of newlineseawater properties and geochemical parameters that influence their newlinedistributional trends in seafloor sediments during the 2009 post North East newlineNE and South West SW monsoon periods along the continental shelf from newlineChennai to Nagapattinam East Coast Tamilnadu This study was conducted newlineto assess the status of the coastal biogeochemical environment and for this newlinepurpose seawater samples were collected from the sea surface and also at newlinevarying depths surface to 150 m depth at six different locations newlineThe nutrient analyses and the CTD data reveal a distinct variation newlinewith water depth along the continental slope and also the physicochemical newlineproperties of seawater are not homogenous The observed values of nutrients newlinefor the post NE monsoon period are low compared to the SW monsoon newlineperiod Contour plots indicate seasonal and spatial variations in physicochemical newlineparameters along the continental shelf of the east coast of India newlineThese observations are also reflected by the stable isotope oxygen data newlineSalinity temperature and stable isotope oxygen reconstruction showed that the newlineparameters increased towards the central regions of the coastal stretch newlineespecially along Tarangampadi and ChidambaramO values reflect a newlinepositive gradient with other biogeochemical parameters dissolved oxygen newlinesalinity pH and temperature It is very obvious that there exist a dynamic and newlinekinetic interaction between the saline waters and the sediment passing newlinethrough the seawater column at different depths and settling on the seafloor newline newline newline newline newline newline newline newline newline newline newline newline newline newline newline newline
Pagination: xvi,188p.
URI: http://hdl.handle.net/10603/25082
Appears in Departments:Faculty of Science and Humanities

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01_title.pdfAttached File231.75 kBAdobe PDFView/Open
02_certificate.pdf4.49 MBAdobe PDFView/Open
03_abstract.pdf74.01 kBAdobe PDFView/Open
04_acknowledgement.pdf64.37 kBAdobe PDFView/Open
05_contents.pdf143.91 kBAdobe PDFView/Open
06_chapter 1.pdf1.28 MBAdobe PDFView/Open
07_chapter 2.pdf3.58 MBAdobe PDFView/Open
08_chapter 3.pdf31.55 MBAdobe PDFView/Open
09_chapter 4.pdf9.06 MBAdobe PDFView/Open
10_chapter 5.pdf89.68 kBAdobe PDFView/Open
11_references.pdf200.26 kBAdobe PDFView/Open
12_publications.pdf61.41 kBAdobe PDFView/Open
13_vitae.pdf60.04 kBAdobe PDFView/Open


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