关键词: 合成孔径雷达干涉测量, 数字高程模型, 走滑断层, 拉分盆地

Abstract: Using ERS-1/2 radar satellite data, we generated the Digital Elevation Model by Interferometric Synthetic Aperture Radar, and the ERS-1/2 DEM that we generated is obviously superior to the 1/25 ten thousand-scale DEM of the National Fundamental Geographic Information System of China and the 90 meter spatial resolution’s SRTM DEM that America published in 2004 when it shows the characteristics of tiny structure relief. By analyzing the relief characteristics of Bencuo fault zone based on ERS-1/2 DEM, we found that the relief on the connection location of Bengcuo and Pengcuo fault zones had complex characteristics. A structure relief that is similar to Pengcuo fault zone crossed through Dazi-Dasha fault on Bengcuo fault zone, while Dazi-Dasha fault crossed through a gully at this place. This indicated that Dazi-Dasha fault was active at this place in recent time, at the same time, Naka-Naduiduo fault severed by the gully which was cut through by Dazi-Dasha fault. Therefore, Naka-Naduiduo fault is formed earlier than Dazi-Dasha fault.

Key words: Synthetic Aperture Radar Interferometry, Digital Elevation Model, Strike-slip fault, pull-apart basin