Response of the Stream Geomorphic Index to Fault Activity in the Lianfeng–Ningnan Segment (LNS) of the Lianfeng Fault on the Eastern Margin of the Tibetan Plateau
نویسندگان
چکیده
The response of the stream geomorphic index to fault activity is important for assessing regional seismic hazard. data used in this paper are 12 m resolution TanDEM-X data. Fill tool Hydrology toolset ArcGIS 10.5 was first process digital elevation model (DEM), then analyse flow direction DEM after filling and finally extract streams with catchment areas more than 9 km2. Based on spatial analysis, Lianfeng–Ningnan segment (LNS) Lianfeng extracted, including length gradient (SL) hypsometric integral (HI). This information, combined analysis typical field geomorphology terrace profiles, define period. To characteristics LNS, LNS divided into northern (Lianfeng Jinyang), middle (Jinyang Duiping town) southern segments (Duiping town Ningnan). showed variations, mean SL HI values 384 0.45, respectively, segment; 175 0.41, 378 segment. These results indicate that active segment, there little difference between segments, relatively weak. By comprehensively analysing lithology, climate tectonics region, we conclude main factor controlling region. information dating found Holocene, which consistent latest research results.
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ژورنال
عنوان ژورنال: Remote Sensing
سال: 2023
ISSN: ['2315-4632', '2315-4675']
DOI: https://doi.org/10.3390/rs15092309