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Jebakumar, Prince Prakash
- Mineral Analysis of Coastal Sediment Samples of Tuna, Gujarat, India
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Authors
Affiliations
1 PG & Research Dept. of Physics, Govt. Arts College, Tiruvanamalai-606601, TN, IN
2 Dept. of Physics, University College of Engg., Arani-632317, TN, IN
3 Dept. of Physics, St.Joseph’s College of Engg., Chennai-119, TN, IN
4 Department of Physics, Sacred Heart College, Thirupattur-635601, TN, IN
5 National Institute of Ocean Technology, Pallikaranai, Chennai -601302,TN, IN
1 PG & Research Dept. of Physics, Govt. Arts College, Tiruvanamalai-606601, TN, IN
2 Dept. of Physics, University College of Engg., Arani-632317, TN, IN
3 Dept. of Physics, St.Joseph’s College of Engg., Chennai-119, TN, IN
4 Department of Physics, Sacred Heart College, Thirupattur-635601, TN, IN
5 National Institute of Ocean Technology, Pallikaranai, Chennai -601302,TN, IN
Source
Indian Journal of Science and Technology, Vol 3, No 7 (2010), Pagination: 775-781Abstract
Qualitative analysis was carried out to determine the major and minor constituent minerals present in sediment samples collected at the coastal area of Tuna, Gujarat by FT-IR and XRD technique. From the IR absorption band or the locations of the different peaks, the minerals were identified with the available literature. In addition to the band positions, the sharpness or diffuseness of bands was helpful in the identification of mineral components. The IR study on sediment samples was highly useful in identifying the various minerals in sediments. Further, the representative sediment samples were analyzed by XRD technique to yield more information about the minerals. Both of these methods were non-destructive and can be used in the identification of mineralogical composition. These results confirmed that the applied techniques are relatively quicker and more reliable in mineral analysis.Keywords
Sediment Samples, Mineral Analysis, FT-IR, XRD TechniqueFull Text
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- Detached Segmented Submerged Breakwater Made of Geosynthetic Tubes for Kadalur Periyakuppam Coast, Tamilnadu:A Sustainable Shoreline Management Solution
Abstract Views :281 |
PDF Views:279
Authors
Affiliations
1 National Institute of Ocean Technology (NIOT), Chennai-600100, Tamil Nadu, IN
1 National Institute of Ocean Technology (NIOT), Chennai-600100, Tamil Nadu, IN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 6 (2016), Pagination: 2688-2694Abstract
Erosion and accretion are two major issues in shoreline management resulting from natural phenomena and/or manmade coastal interventions. Human interventions with the coastlines such as construction of breakwaters, seawalls, groins etc. are likely to transfer the problem to the adjacent shoreline. Impacts of installation of shore protection measures in one location may not be limited to the project site alone but may extend to a larger coastal stretch on both sides of the project site. Environmental concerns rising out of such issues have led to use of detached segmented submerged breakwaters. In recent times, geosystems such as geosynthetic bags, geosynthetic tubes and geosynthetic containers are increasingly used in the creation of offshore breakwaters. Kadalur Periyakuppam (KPK) is a cluster of three fishing villages, near Kalpakkam in Tamil Nadu. The shoreline at KPK is prone to erosion and the situation gets aggravated during cyclones resulting in large scale loss of beachfront. The sediment transport rates at KPK are estimated using Delft 3D software and analyzed using DETRAN. The studies indicate that long-shore transport is predominant throughout the year and onshore-offshore transport is dominant during monsoon and cyclones. At KPK, the offshore transport during cyclones is the major cause of erosion. Any obstruction to the long-shore transport may result in wide spread erosion to the north of the project site. Therefore a detached breakwater has been proposed as an alternative solution. Offshore breakwaters shall intercept the high energy waves thereby reducing the wave attack on the coast. The breakwater is proposed to be laid using geosynthetic tubes. When an alien material like geosynthetics is introduced to the natural sandy coastal area, it is observed to create ecological changes in the vicinity. In order to study the impact of manmade structures in the coast, a pilot study has been carried out to assess the faunal assemblage on a similar artificial submerged geosynthetic reef present in 6m water depths off Kovalam. The effect of the organisms on the strength of the geosynthetics has been assessed by testing geosynthetic bags deployed at wave breaking areas and also those exposed to direct sunlight. Preliminary studies indicate a positive effect on geosynthetics.Keywords
Shoreline Erosion, Coastal Morphology, Geosynthetic Tubes, Epibiota.Full Text