Mapping of turbidity and Chlorophyll content in Tamirabarani Estuary using

Remote Sensing

Guided By Presented By

Mr.S.KaruppaSamy S.Melkin JoelAsst. Professor (950011506008)

Aim

Develop a method to map spatial & temporal distribution of turbidity, total suspended solids, coloured dissolved organic matter, & chlorophyll-a.

Objective

• To estimate the chlorophyll content in the water using Remote Sensing.

• To estimate the turbidity of the water using Remote Sensing.

• To assess the impacts of chlorophyll in oceanic changes (temp., upwelling,circulations.).

Study Area• Location :

Punnaikayal (20 km South of Tuticorin )

• Latitude - 78 4’ and 78

• Longitude –8 40’

• SOI toposheet No. 58 L/2

• Type : Tropical oligomictic estuary .– Floods during winter and scanity flow in summer

• Area : About 9 kilometres

Methodology

• Data from (Suspended sediment concentrations, turbidity) will be compared to Landsat imagery.

• Water quality measurements,

• Classification of Data

• Water column radiance data

• Comparing with Spectral Reflectance Curve

Contd….

• Empirical relationship between total suspended solids (TSS) and reflectance data obtained from Landsat imagery

• Regression Analysis will link satellite imagery to ground samples.

• Regressions obtained from literature:

Log TSS=A +B Log Xs

A & B determined by best fit to in situ measurements of reflectance & sediment concentration.

Xs =[R(550)-R(670)a [R(520)/R(550)]b.

Literature Survey

• Distribution of the Species diversity of recent foraminifera from the Thamirabarani river Estuary, Punnaikayal, Tamilnadu , V.Kumar,V.manivannan and V.Raghunathan.,Journal of the Palaeontological Society Of India.,Vol .45 ,2004 ,P.P 63-70

Findings:• 26 foraminderal species were identified• Water depth gradually increasses in the upstream direction• The decreasing salinity value is related to depth,silt and clay

particles and other particles

Literature Survey

Ecology and distribution of foraminifera from bay of bengal, off porto, nova, Tamilnadu.Ragothaman,2005

Findings:

– The distribution of fauna is more near the estuaries– The concentration changes periodically

Ecology and systematics of forominifera in thalasia habitats, jamaica, west indies.Smith & R.K Been,2001

Findings: – Chlorophyll a concentrations are generally low in meso- and macro-

tidal systems – micro-tidal coastal with limited river flushing can havequite high

chlorophyll a concentrations and these concentrati

• Diversity and dominanace of living forominifera from pennar estuary, Andhra pradesh. Jagadeeswara rao,2006

Findings• Species diversity is maximum near the mouth• Less far from the mouth• 3 types of species were found

• OzCoast and OzEstuaries. 2007. Web site. http://www.ozcoasts.org.au/index.jsp.

• EPA. 2006. Queensland Water Quality Guidelines. 121 p. The State of Queensland,Environmental Protection Agency; Brisbane.

• Ward, T., Butler, E. and Hill, B. 1998. Environmental Indicators for National State of the Environment Reporting, Estuaries and the Sea, Commonwealth of Australia

• Monbet, Y. 1992. Control of phytoplankton biomass in estuaries: A comparative analysis of microtidal and macrotidal estuaries. Estuaries 15(4), 563-571.

• Cloern, J.E. 1987. Turbidity as a control on phytoplankton biomass and productivity in estuaries.Continental Shelf Research 7(11/12), 1367-1381.

• Scanes P., G. Coade, M. Doherty and R. Hill, 2007, Evaluation of the utility of water quality based indicators of the estuarine lagoon condition in NSW, Australia. Est. Coast. Shelf Sci. 74: 306-319.

• Brando, V., Dekker, A., Marks, A., Qin, Y and Oubelkheir, K. 2006. Chlorophyll and suspended sediment assessment in a macrotidal tropical estuary adjacent to the Great Barrier Reef: spatial and temporal assessment using remote sensing. Cooperative Research Centre for Coastal Zone, Estuary & Waterway Management Technical Report 74.

Thank You