Article: Shallow sediment physiognomies of Manakudy estuary southwest coast of India Journal: International Journal of Global Environmental Issues (IJGENVI) 2018 Vol.17 No.1 pp.64 - 79 Abstract: A total of 20 surface sediment samples were collected from the Manakudy estuary (8°05'30'' N and 77°29'10'' E) in Kanyakumari, southwest coast of India. Samples were analysed for grain size, CaCO3, organic carbon and trace element. Sedimentological behaviour and the spatial distribution pattern in the coastal and estuarine environment are presented in detailed. Based on the textural results show that the estuary is dominated by silty sand, where as the estuarine mouth is dominated by sand. Correlation studies illustrate that there exists a strong correlation between sand and CaCO3, organic carbon significant correlation with silt. The order of abundance of various trace elements in the surface sediment can be summarised as Fe > Mn > Zn > Pb > Cu > Cd > Cr. The increase in the concentration of trace metals along the Manakudy estuary indicates that the area has been contaminated by the input from the Pazhayar River. The sources of contamination mainly due to the anthropogenic activities such as sewage water, boot relishing oil, and fishing waste mixing around the estuary. The enrichment of cadmium in the southern part of the study area is mainly due to anthropogenic activities. Inderscience Publishers - linking academia, business and industry through research

Title: Shallow sediment physiognomies of Manakudy estuary southwest coast of India

Authors: S. Muthusamy; A. Shanmugasundharam; M. Jayaprakash

Addresses: Department of Geology, VOC College, Tuticorin, Tamilnadu, India ' Department of Applied Geology, Global and Environmental Change Research Group, University of Madras, Guindy Campus, Tamil Nadu, India ' Department of Applied Geology, Global and Environmental Change Research Group, University of Madras, Guindy Campus, Tamil Nadu, India

Abstract: A total of 20 surface sediment samples were collected from the Manakudy estuary (8°05'30'' N and 77°29'10'' E) in Kanyakumari, southwest coast of India. Samples were analysed for grain size, CaCO₃, organic carbon and trace element. Sedimentological behaviour and the spatial distribution pattern in the coastal and estuarine environment are presented in detailed. Based on the textural results show that the estuary is dominated by silty sand, where as the estuarine mouth is dominated by sand. Correlation studies illustrate that there exists a strong correlation between sand and CaCO₃, organic carbon significant correlation with silt. The order of abundance of various trace elements in the surface sediment can be summarised as Fe > Mn > Zn > Pb > Cu > Cd > Cr. The increase in the concentration of trace metals along the Manakudy estuary indicates that the area has been contaminated by the input from the Pazhayar River. The sources of contamination mainly due to the anthropogenic activities such as sewage water, boot relishing oil, and fishing waste mixing around the estuary. The enrichment of cadmium in the southern part of the study area is mainly due to anthropogenic activities.

Keywords: estuarine sediment; CaCO₃; OC; anthropogenic; trace elements; acid leachable trace metals; ALTMs.

DOI: 10.1504/IJGENVI.2018.090648

International Journal of Global Environmental Issues, 2018 Vol.17 No.1, pp.64 - 79

Received: 28 Dec 2016
Accepted: 20 Sep 2017
Published online: 25 Mar 2018 *

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Title: Shallow sediment physiognomies of Manakudy estuary southwest coast of India

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