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008 th eng
035 _a.b11584166
099 9 _aAIT Thesis no.SR-96-22
100 0 _aVu Anh Tuan
245 1 0 _aApplication of GIS and remote sensing techniques for geomorphologic mapping :
_ba case study of Suoihai area, Vietnam
260 _aBangkok :
_bAsian Institute of Technology,
_c1996
300 _a108 leaves :
_bill.
490 1 _aThesis ;
_vno. SR-96-22
502 _aThesis (M. Sc.) - Asian Institute of Technology, 1996
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development
520 _aGeomorphology is one of the important information layers of natural resources. This study presents successfully the application of integrated Remote Sensing and GIS in geomorphologic mapping. The satellite images and topographic map were used as two layers in extraction of all possible aspects of information about relief. Digital image processing was applied to Landsat TM image to classify the geomorphologic units based on its relation with landcover categories. SPOT image was used in visual interpretation to distinguish the geomorphologic units in flat area. The topographic map was digitized to establish a DEM of study area, named Suoihai. Using this DEM, several morphometric maps were calculated using spatial analysis functions of IL WIS-a raster based GIS. A digital database of relief was built from these morphometric maps, such as slope, aspect, length of slope, horizontal dissection, vertical dissection, distance from drainage, etc. and other relative maps, such as geology. This database was used in geomorphologic mapping following a quantitative model. The model was established from detail pre-studies about geomorphology of the area and also the data collected from a field trip. The geomorphologic map at a scale of 1 :50,000 was established automatically by using this model. The geomorphologic map which was done by this method has acceptable accuracy and more detail in comparison with the conventional map. However, the further study is necessary to complete the method that can be applied effectively in time and cost for whole country.
650 0 _aGeographic information systems
650 0 _aRemote sensing
_xVietnam
650 0 _aGeomorphological mapping
_xVietnam
_xSuoihai
700 0 _aKaew Nualchawee,
_eChairperson
700 1 _aAndrianasolo, Haja,
_eExamination Committee
700 0 _aApisit Eiumnoh,
_eExamination Committee
710 2 _aFrench Government,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. SR-96-22
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B14853
907 _a.b11584166
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_tAbstract--AIT Thesis no.SR-96-22
_vn
945 _lmnait
945 _lmnait
945 _lmnarc
942 _c20
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