An Analysis of Relative Active Tectonics Based on DEM
详细信息
- 责任者：Li Libo (Key Laboratory of Neotectonic Movement ＆ Geohazard ; Ministry of Land and Resources ; Institute of Geomechanics ; Chinese Academy of Geological Sciences ; Beijing 100081 ; China) ; Xu Gang
- 刊名：Geology in China
- 出版年：2012
- 卷期：39(3)
- 关键词：活动构造 ; active tectonics ; 构造地貌 ; morphostructures ; 渭河 ; Weihe River
- 页码：p.595-604
- 图表：5 illus., 3 tables, 50 refs.
- 分类号：0300
- issnNo：ISSN1000-3657
- isbnNo：CN11-1167/P
摘要
This paper presents a new method for evaluating relative active tectonics based on DEM data, using several tectonic geomorphic indexes which include hypsometric integral, drainage basin asymmetry, stream-gradient index, mountain-front sinuosity, valley floor width - valley height ratio, drainage basin shape etc. Iat is an index of relative active tectonics, which is obtained by the average of the different classes of geomorphic indices. Exemplified by the upstream region of the Weihe River, the authors consider the drainage is relatively higher tectonic activity (lat=l.50), and that the method has ideal effects and significance for exploring diversities of relative tectonic activities on an aerial basis.