中国台湾岛流域地貌对构造活动的响应OA北大核心CSTPCD

Based on SRTM DEM 30 m data and ArcGIS,the river system and geomorphological parameters(slope,topographic relief,and hypso-metric integral(HI))were extracted to analyze the response of the river system for tectonic activities in Taiwan Island drainage basin,and the mainly conclusions were obtained as follows.1)The rivers of Taiwan Island are controlled by tectonic activities,with the Central Range as the watershed.The rivers on the western side of Central Range flow vertically in the southern part of the system,and flow horizontally in the northern part.The rivers on the east of Central Range all flow in an east-west direction.2)The HI values on Taiwan Island show an overall trend of high in the middle and low on the both sides,with a roughly positive correlation with elevation,and the HI values differ significantly along the east and west sides of the reverse fault boundary.3)The HI values can reflect the generation time sequence of the orogenic belt of Taiwan Island.The longer the drainage basin has been affected by the tectonic uplift movement,the larger the HI value.