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Interpretation of high-resolution satellite images to detect the landform changes and disaster damages: case study of the northern Pakistan earthquake

A large-scale earthquake with a magnitude of 7.6 occurred on October 8, 2005 in the northern part of Pakistan. By the analysis using high-resolution images from IKONOS and SPOT-5 satellites, we clarified that the slope failures caused by the earthquake were concentrated on the northeastern side of the earthquake faults. In addition, GSI detected the existence of surface rupture of the earthquake faults. In this paper, the authors explain the difference of interpretation characteristics of high-resolution satellite imageries, between 2.5-meter class resolution and 1-meter class, and between single imagery and stereo pair imageries. The targeted features for interpretation are such as landslides, surface earthquake faults, damaged buildings and land liquefaction. In addition, the interpretation characteristics of ALOS PRISM for disaster monitoring are reported, in case of the Middle Java earthquake.