Tag: RS

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.

Read full text

Advertisements

Recent Articles-IJGGS

Web based coastal GIS for southern coastal Tamilnadu by using ArcIMS server technology

Author(s) – Sheik Mujabar. P, Chandrasekar. N

ABSTRACT
This paper presents the information on the development and implication of web-based coastal GIS (STNCOAST-GIS, http://www.geotechmsu.co.cc) for analysing the dynamics of coastal landform features along the southern coastal Tamil Nadu of India by using ArcIMS server technology. It also deals with the concept, architecture and advantages of ArcIMS technology. The integration of spatial and non-spatial database for the study area has been discussed. The effective dissemination of geospatial information and the findings of the recent researches on the southern coastal Tamil Nadu have been visualised through the web based coastal-GIS. The web-GIS for the study area have wide applications in the field of geology, coastal zone management and developmental projects. It provides up-to date information and dynamics of the various coastal landform features such as sandy beaches, sand dunes, spits, sand bars etc. It also provides the land-use and land-cover mapping along the southern coastal Tamil Nadu.  Thus the developed web based coastal GIS is very useful for the coastal planers, engineers and policy makers to plan various developmental projects in sustainable environmental way.

Read full text

Recent Articles-IJGGS

Land Use and Land Cover Changes Detection Using Multitemporal Satellite Data, Cuddalore Coastal Zone, Se-Coast of India

Author(s) – Muthusamy.S et al.,j

ABSTRACT
Cuddalore coastal zone is located along the southeast coast of India, Tamil Nadu. This coastal zone is suffering from many natural catastrophes such as storms, cyclones, floods, tsunami and erosion. The study area is seriously affected by 2004 Tsunami and during 2008 Nisha cyclone. The present study aims to study the land use/cover changes through exploratory analyses, land cover classification, and change detection analyses conducted on multitemporal Landsat satellite data (1977, 1991 and 2006). Based on the quantitative analysis on LULC, it was observed that a rapid growth in built-up land between 1977 and 2006 while the periods between 1977 and 2006 witnessed a reduction in this class. It is expected that the expansion of built-up area will follow the same trend from the year 2006 onwards. The settlement with vegetation covers nearly 8.876% of the total area. The dominant land use categories in 1977 were settlement with plantation, which occupied 2.397%. In 1991 settlement with plantation covered nearly 4.743 % in Cuddalore coastal zone. This increase is due to population explosion and the construction of buildings and factories. Landsat satellite data using remote sensing and GIS also proved that the model can be employed under different climate changes as well as management scenarios for developing adaptation strategies for this study area.

Read full text

Recent Articles-IJGGS

Integrated approach using RS and GIS techniques for mapping of ground water prospects in Lower Sanjai Watershed, Jharkhand

Author(s) – Binay Kumar, Uday Kumar

ABSTRACT
Remote sensing with its advantages of spatial, spectral and temporal availability of data covering large and inaccessible areas within short time has become a very handy tool in assessing, monitoring and conserving groundwater resources. Satellite data provides quick and useful baseline information on the parameters like geology, geomorphology, land use/land cover, lineaments etc. controlling the occurrence and movement of groundwater (Saraf and Choudhuray, 1998). Remote sensing and GIS technology have opened new paths in groundwater studies. The concept of integrated remote sensing and GIS has proved to be an efficient tool in integrating urban planning and ground water studies. Hydrogeomorphological studies coupled with hydrogeological and structural/lineament have proved to be very effective tool to discern ground water potential zones. In the present study, an attempt has been made to identify the Ground Water Prospect sites in the Lower Sanjai Watershed of Kolhan Division of Jharkhand based on remote sensing and GIS techniques. The groundwater prospect map is a systematic effort and has been prepared considering major controlling factors, which influence the water yield and quality of ground water. The map depicts hydrogeomorphological aspects, which are essential as basis for planning and execution of groundwater exploration. The present information, depicted in the form of a prospect map would provide first-hand information to local authorities and planners about the areas suitable for searching ground water followed by its suitable exploration based on information given for type of well, well depth, water quality and success rate of wells

Read full text