DEM application in the extraction of active fault location and active fault surface deformation features
Online published: 2015-10-20
Copyright
Extraction of active fault location and active fault surface deformation features is essential for the study of active fault systems, and a large number of studies have been carried out on fault extraction based on Digital Elevation Model (DEM). This article summarizes the active fault extraction methods using DEM of lower than 30 m resolution and very-high resolution DEM, such as Light Detection and Ranging (LiDAR) DEM and Structure from Motion (SfM) DEM. The fault extraction methods can be divided mainly into three categories: geomorphic feature interpretation, image interpretation and multiple interpretation. Geomorphic feature interpretation is based on GIS spatial analyses. Image interpretation identifies faults by examining linear variation of surface deformation through image processing algorithms. Multiple interpretation combines the above two methods with remote sensing image processing. Meanwhile, this article reviews the most recent progress in the extraction of surface deformation features using DEM, and enumerates the extraction of fault scarp and deformed drainage characteristics. With the progress in high-resolution DEM, DEM and its spatial analysis techniques have become a conventional geoscience research method. The integration of this method with field research, remote sensing, and dating techniques can provide a strong technical support to quantitative study in fault research.
ZHANG Xinxin . DEM application in the extraction of active fault location and active fault surface deformation features[J]. PROGRESS IN GEOGRAPHY, 2015 , 34(10) : 1288 -1296 . DOI: 10.18306/dlkxjz.2015.10.009
Fig.1 Flowchart of fault extraction based on DEM图1 基于DEM提取断层位置的方法流程图 |
Fig.2 Fault strip mapping by Vedder and Wallace, Stone and Arrowsmith, and Zielke (Modified from Arrowsmith et al, 2009)图2 Vedder和Wallace、Stone和Arrowsmith、Zielke解译的断层(修改自Arrowsmith et al, 2009) |
The authors have declared that no competing interests exist.
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