Slope failure detection from temporal AVNIR images taken before and after the northwest Kagoshima-ken earthquake

Sotaro Tanaka; Toshiro Sugimura; Shinzaburo Takatori; Yuzo Komaki

doi:10.1117/12.373112

17 December 1999 Slope failure detection from temporal AVNIR images taken before and after the northwest Kagoshima-ken earthquake

Sotaro Tanaka, Toshiro Sugimura, Shinzaburo Takatori, Yuzo Komaki

Author Affiliations +

Proceedings Volume 3868, Remote Sensing for Earth Science, Ocean, and Sea Ice Applications; (1999) https://doi.org/10.1117/12.373112
Event: Remote Sensing, 1999, Florence, Italy

Abstract

This work aims to detect slope failures caused only by mechanical force of earthquake. In many cases so far, the pure detection where the slope failure occurred is not completed because that slope failures occurred with mixing the other events accompanying as heavy rain. To isolate the slope failure due to the mechanical stress of earthquake is important to consider why the slope failed. Our idea is to use the temporal high-resolution data as ADEOS/AVNIR ones just taken before and after the earthquake shock. In this experimental study, we found three slope failures on the sites induced by the main shock, on the northern mountainous region in Kagoshima. Extraction of slope failures purely caused by the earthquake-force serves analyzing the dynamical mechanics of slope failure. Three slopes failed at that time are flat and long about a few hundred meters with an inclination of about 45 degrees. Most of the slope failures have a size of few meters to a few tens of meters. Accuracy of satellite image is required within half DN values in radiometric and half pixel size in spatial. This work showed a practice of 8- meter resolution image to be applied for the detection of slope failures frequently happened by usual magnitude of earthquakes.

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Sotaro Tanaka, Toshiro Sugimura, Shinzaburo Takatori, and Yuzo Komaki "Slope failure detection from temporal AVNIR images taken before and after the northwest Kagoshima-ken earthquake", Proc. SPIE 3868, Remote Sensing for Earth Science, Ocean, and Sea Ice Applications, (17 December 1999); https://doi.org/10.1117/12.373112

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KEYWORDS

Earthquakes

Earth observing sensors

Satellites

Satellite imaging

Failure analysis

Spatial resolution

Meteorology

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