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Sudip Dey
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Earth & Planetary Sciences

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The influences of natural environment upon the evolution of sands dunes in tropical environment along Medinipur Coastalarea, India Sudip Dey; Pijush Ghosh; Amitava Nayak
Indonesian Journal of Geography Vol 37, No 1 (2005): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2218

Abstract

This papaer assesses development of coastal sand dunes particulary along tropical coast. in depth study along on coastal dune morphology along Medinipur coastal track shows that sea levels remained very dynamic during the Holocene period. Evidence of Holocene sea level changes are found which were responsible for for the origin almost parallel distinct dune colonies through the geological past along this coastal track. The existence of tropical-monsoon climate with its seasonal phenomena plays an important the barrier property of dunes as well. in this paper possible biologcal interactions between sand mass of dunes and vegetation in different stages of development has also been dealt. 
Micro-Environmental status of a dissected highland (College Tilla) of Agartala city, North East india Sudip Dey
Indonesian Journal of Geography Vol 39, No 2 (2007): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2244

Abstract

This paper assesses the present micro-environmental conditions of a dissected highland", College Tilla of Agartala city of North-East India. Geomorphologically Agartala city is located in a part of the basin of R Haora which consists of two main geomorphic units namely dissected high lands or tilla lands and adjacent flat alluvium lands. The elevated geomorphology of the tillalands play important role for the development and preservation of typical high landenvironment and rich ecological resources in some pockets of flat alluvium of R Haora basin for long time. Since the urban activities started on College Tilla only during early 2dh century the variation of flora and fauna of the tilla land is still.remarkable. During the recent period rapid extension of Agartala city causes theproblem of geomorphic degradation and affects the natural environmentalcondition of the area. Due to the construction of the buildings, roads, boundaries, water pipe lines etc the dense vegetation cover is removed rapidly and as a result of that now soil erosion and medium size land slides are becoming very commonfeatures in the city. Besides that the ecology of this area is now under serious degradation due to desperate human interventions on the tilla lands of Agartala City
ELECTRICAL RESISTIVITY BASED SHALLOW CRUSTAL DEFORMATION ANALYSIS IN AN ACTIVE SEISMIC ZONE Gunjan Mukherjee; Chandrani Debbarma; Sushmita Paul; Sudip Dey
Indonesian Journal of Geography Vol 43, No 2 (2011): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2384

Abstract

This paper aims to assess the shallow crustal deformation in a highly seismic-prone zone ofnortheast India. For that purpose, Tripura University campus has been selected which isnearly 8 km away from Agartala city. The field work was conducted by using electricalresistivity meter. Vertical Electrical Sounding or VES method of resistivity survey wasadopted for measuring the electrical resistivity and structural analysis of the study area.Total four VES points were recorded namely near the Department of Physics, Department ofGeography and Disaster Management, Teachers’ Residential area and Girls’ Hostel. Therecorded data was measured and two different electrical profiles were drawn i.e. (a) Physicsbuilding to Geography buildings and (b) teachers’ quarters to Girls’ Hostel. From theelectrical resistivity profiles, a clear break in resistivity characters has been observed in thewestern part which is located near the Tripura University Girls’ Hostel. This clearly provesthat a deformation occurred in this area below 4 m depth and it can be very dangerous if ahigh magnitude seismic slip takes place. From this observation, this hostel is detected as themost risk prone building. Apart from that, the teachers’ quarters near the Girls’ hostel havealso been detected as equally risk prone. From this point of view it can be recommended thatconstruction of heavy buildings should be restricted in Tripura University campus as thesubsurface deformation zone can create faulting during high magnitude earthquake.
Co-Authors Amitava Nayak Chandrani Debbarma Gunjan Mukherjee Pijush Ghosh Sushmita Paul