Potential of modern remopte sensing data and G.I.S during the evaluation and determination of dangerous geological processes
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ZAKHIDOVA, D., ABDURAKHMANOV, A.. Potential of modern remopte sensing data and G.I.S during the evaluation and determination of dangerous geological processes. In: Analele Ştiinţifice ale Universităţii ”Al. I. Cuza” din Iaşi. Serie Nouă. Geografie, 2007, nr. 13, pp. 147-154. ISSN 1223-5334.
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Analele Ştiinţifice ale Universităţii ”Al. I. Cuza” din Iaşi. Serie Nouă. Geografie
Numărul 13 / 2007 / ISSN 1223-5334 /ISSNe 2284-6379

Potential of modern remopte sensing data and G.I.S during the evaluation and determination of dangerous geological processes

CZU: 004.9:910.27:55

Pag. 147-154

Zakhidova D., Abdurakhmanov A.
 
Institute of Hydrogeology and Engineering Geology HYDROENGEO
 
Disponibil în IBN: 25 mai 2021


Rezumat

One of the types of emergencies related to risk of human life and economic objects in mountain and submountain regions in Republic of Uzbekistan is a development of sliding processes. In order to take measures for decreasing of negative consequences of these dangerous geological processes, it is necessary to develop sliding warning system. This task requires a broad approach using not only traditional methods of research, but also modern methods of remote sensing of the Earth with the help of geographical information system. The applications of remote sensing data and geographical information system for estimation and determination of sliding areas by the example of a pilot area located in Bostanlik area of the Tashkent region in the Republic of Uzbekistan are discussed in this article. In this region the sliding displacements formation is recorded, mainly in loess rocks. A probability of new sliding formation depends on various factors and is equal to the product of their probabilities. The most important are the slopes height, their exposition, and steepness, the form in plan and profile, confinedness to tectonic disturbances, geological structure, capacity of loess sediments and their moisture. During the work radar satellite images from Radarsat and multispectral satellite images from were used. For the processing of different data types and formats the ArcView 3.2., ArcInfo 9.1., MapInfo 7.8., GlobalMapper 6.0., AdobePhotoshop SC v.8.0 are being used. Some aspects of the technological processes of data processing are considered, including several basic steps: input of default information, preliminary processing, maintenance of raw and processed data archives of remotes sensing data, thematic processing (decoding and interpretation). Several problems occurred during the data processing of remote sensing data were emphasized. The following work steps in organization and fulfillment of further researches, which are necessary for complete implementation of the project and obtaining its objectives.

Cuvinte-cheie
geographical information systems (GIS), remote sensing (RS), sliding processes, data processing algorithms, decoding, interpretation, probability theory