Volume 21 Issue 5
Oct.  2013
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YIN Zhiqiang, QIN Xiaoguang, ZHAO Wuji, WEI Gang. 2013: CHARACTERISTICS OF LANDSLIDES IN UPPER REACHES OF YELLOW RIVER WITH MULTIPLE DATA OF REMOTE SENSING. JOURNAL OF ENGINEERING GEOLOGY, 21(5): 779-787.
Citation: YIN Zhiqiang, QIN Xiaoguang, ZHAO Wuji, WEI Gang. 2013: CHARACTERISTICS OF LANDSLIDES IN UPPER REACHES OF YELLOW RIVER WITH MULTIPLE DATA OF REMOTE SENSING. JOURNAL OF ENGINEERING GEOLOGY, 21(5): 779-787.

CHARACTERISTICS OF LANDSLIDES IN UPPER REACHES OF YELLOW RIVER WITH MULTIPLE DATA OF REMOTE SENSING

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  • Received Date: 2013-01-20
  • Rev Recd Date: 2013-08-20
  • Publish Date: 2013-10-25
  • The upper reaches of Yellow River northeastern Tibet Plateau(TP) is a high prone zone of geological disasters in western part of China. In the region, some large-scale and giant landslides are notable for their scales, complex formation mechanism, and serious destruction. In this paper, several different high resolution kinds of remote sensing data, such as QuickBird(QB),GeoEye, ZY-3,ZY-1 02C and Google earth, are used to be source data. They are combined with ways of field survey and remote sensing verification to carry out the spatial flatform of landslides and their distribution characteristics. (1)Remote sensing images of landslides characteristics are very obvious clearly in the study area. It is founded that there are 508 landslides. A majority of them are distributed in the Qunke-Jianzha Basin. (2)The spatial morphological flat patterns of landslides can be divided into eight categories. They are round-backed armchair-like and semi-elliptical pattern, dustpan pattern, dumbbell pattern, tongue pattern(including long tongue, rectangular, mat, stepped shape),saddle pattern, long-arc pattern and triangular pattern. The rock and soil types of landslides can be divided into four categories, loess landslide, mudstone landslide, semi consolidation diagenetic landslide and rock landslide. The number of mudstone landslides is the most. (3)The lengths and widths of landslide masses are mainly and respectively concentrated on 550m to 1500m and 600m to 1500m. They are extended directions by different polarizations. (4) The average elevation of landslides are mainly between 2400m to 2800m. The relative elevation differences of the front sheer opening and back trailing edge are concentrated on the 150m to 400m and around 750m. There are good linear relationships among the average slope angle, the relative elevation difference and the length of landslides mass. The research results can provide a basis evidence for serious geological disasters prevention and environment protection in study area.
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