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Evaluating Land Surface Changes of Makassar City Using DInSAR and landsat Thematic Mapper Images

Journal of Civil Engineering and Architecture 2013年第10期7卷 1287-1294页

作者： Ilham Alimuddin Luhur Bayuaji Rohaya Langkoke Josaphat Tetuko Sri Sumantyo Hiroaki Kuze Departm.nt of Geology University of Hasanuddin Makassar 90221 Indonesia Center for Environmental Remote Sensing Chiba University Chiba-Shi 863-8522 Japan

Urban growth has been a major issue in environmental monitoring and changes occurred on land surfaces have been monitored by applying remote sensing as well as ground measurement. Most major cities in the world have experienced land subsidence phenomena on some parts of them due to the load of development and modernization. Excessive extraction of groundwater for the needs of industry has led to the condition where the water table drops, and this can possibly trigger subsidence, as observed in Indonesian cities. In this study the authors have shown that the application of DInSAR （differential interferometric synthetic aperture radar） technique using Japanese Earth Resources Satellite-I Synthetic Aperture Radar JERS-I SAR data can reveal subsidence conditions in the studied Makassar city area. landsat tm.（thematic mapper） images were used to evaluate the change of land cover during the observation period of 1994-1999. Makassar is fiat, covered mainly by alluvium deposit that is vulnerable to the load of constructions, and volcanic formations which is porous and will easily be degraded by groundwater extraction. It is found that mostly the subsidence has occurred in the western part of the city, including the industrial district, reclamation area, trading center area and the seaport area. The ground survey has indicated that high human activity exists in every point of subsidence. It is likely that various human activities such as ground water pumping and construction work should have affected the local subsidence phenomena in Makassar, as in the case of other large-scale cities in Indonesia.

关键词： DInSAR JERS-I surface changes urban growth landsat tm.

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