Tag: Zonation

Recent Articles-IJES

Ground water recharge zonation mapping and modeling using Geomatics techniques
Author(s)-  Binay Kumar, Uday Kumar

ABSTRACT

ABSTRACT

Availability of groundwater varies spatially and temporally depending upon the terrain. The scarcity of water affects the environmental and developmental activities of an area. Continuous failure of monsoon, increasing demand and over exploitation leads to depletion of ground-water level. This problem could be sorted out to certain extent by artificially recharging the potential aquifers. Construction of small water harvesting structures across streams/watersheds is gaining momentum in recent years. In the present study, potential sites for construction of rainwater harvesting structures in the Lower Sanjai Watershed of Kolhan Division of Jharkhand have been identified using remote sensing and GIS techniques. Since the study area comprises of hard rocky basement of Precambrians/Archaeans, the intersection zones of lineaments provides potential avenues for ground water accumulation and ground water recharge.

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Recent Articles- IJGGS

Digital and Visual Analyses of IRS Satellite Data for Zonation and change deduction of coral reefs in Gulf of Mannar marine biosphere reserve

Author(s)-Thanikachalam.M

ABSTRACT
Coral reefs are highly sensitive and productive marine ecosystem. The increasing human population and their activities and other natural factors have caused the degradation of coral reefs. The IRS LISS-II (1988) and IRS LISS-III (1998) satellite data with GIS and ERDAS software were used for mapping coral reef, change detection and of coral reef zonations. Digital and visual techniques were used to map the coral reefs. Visual classification shows that 25 km2 of coral reef area in Gulf of Mannar has been lost over a period of ten years.  Digital classification of IRS LISS-III date using Principle Component Analysis was found to be more suitable for coral reef zonation.

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