Sreebha, S; Dr. Padmalal, D(Cochin University of Science and Technology, November , 2008)
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Abstract:
This thesis Entitled Environmental impact of Sand Mining :A case Study in the river catchments of vembanad lake southwest india.The entire study is addressed in nine chapters. Chapter l deals with the general introduction about rivers, problems of river sand mining, objectives, location of the study area and scope of the study. A detailed review on river classification, classic concepts in riverine studies, geological work of rivers and channel processes, importance of river ecosystems and its need for management are dealt in Chapter 2. Chapter 3 gives a comprehensive account of the study area - its location, administrative divisions, physiography, soil, geology, land use and living and non-living resources. The various methods adopted in the study are dealt in Chapter 4. Chapter 5 contains river
characteristics like drainage, environmental and geologic setting, channel characteristics, river discharge and water quality of the study area. Chapter 6 gives an account of river sand mining (instream and floodplain mining) from the study area. The various environmental problems of river sand mining on the land adjoining the river banks, river channel, water, biotic and social / human environments of the area and data interpretation are presented in Chapter 7. Chapter 8 deals with the Environmental Impact Assessment (EIA) and Environmental Management Plan (EMP) of sand mining from the river catchments of Vembanad lake.
Description:
Environmental Sciences Division, Centre for
Earth Science Studies
Sajan,K; Dr.Damodaran, K T(Cochin University of Science And Technology, August , 1988)
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Abstract:
This study enfolds the environment of
deposition and the lateral variation in texture,
mineralogy and geochemistry of the Ashtamudy lake
sediments. While the heavy mineral and clay mineral
investigations enable us to decipher the nature, texture
and source of sediments; organic matter and carbonate
contents and the geochemical analysis of major and minor
elements help establish the distribution and
concentration of the same in regard to the various
physico-chemical processes operating in the lake.
Study of trace elements holds prime importance in
this work, since their concentrations can be used to
outline the extent of contaminated bottom area, as well as
the source and dispersal paths of discharged_pollutants.
In short, this study brings out a vivid picture of the
mineralogy and geochemistry of the lake sediments
in different environments, viz., the freshwater, brackish
water and marine environments that are confined to
the eastern, central and western parts of the lake
respectively. For the better understanding and
expression of the results of the analysis, the lake
has been divided into 3 zones namely: eastern part,
central part and western part.
Description:
School of Marine sciences, Cochin University of Science And Technology