Construction and analysis of interpreted fracture planes through combination of satellite-image derived lineaments and digital elevation model data

Koike K.; Kawaba K.; Nagano S.

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Construction and analysis of interpreted fracture planes through combination of satellite-image derived lineaments and digital elevation model data

机译：Construction and analysis of interpreted fracture planes through combination of satellite-image derived lineaments and digital elevation model data

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One application of lineaments interpreted from satellite images is to reveal dominant azimuth sets and distribution density of the derived lineaments for an extensive area. In this analysis, a lineament is treated literally as a straight line in the horizontal plane and any dip of the lineament is not considered. We propose a new method to calculate the azimuth (strike and dip angles) of "fracture" planes through a combination of lineament maps and digital elevation models (DEMs). A "fracture" is created by connecting several lineaments, which appear to belong to the same system, using the criteria of distance and directional angle. The proposed method was applied to mines in an area of Cretaceous granite, an area of Miocene andesite and an area of Quaternary volcanic rocks in Japan. Lineaments in these areas were interpreted from Landsat Thematic Mapper (TM) or SPOT panchromatic images using the segment tracing algorithm (STA). A correlation exists between interpreted "fracture" orientations and (1) the predominant azimuth of joints appearing on the drift walls of a skarn deposit in the granite area and (2) the orientation of main gold veins in the andesite area. Furthermore, interpreted "fractures" are believed to act as conduits for transporting hydrothermal fluids to the surface in a hot spring area. Additionally, the proposed method is capable of calculating the intersection pattern of fractures at an arbitrary level below the ground surface. (C) 1998 Elsevier Science Ltd. All rights reserved References: 16

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《Computers & geosciences》 |1998年第6期|573-583|共11页
作者
Koike K.; Kawaba K.; Nagano S.;
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作者单位

Kumamoto Univ, Fac Engn, Kurokami 2-39-1, Kumamoto 860, Japan.;

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原文格式 PDF
正文语种英语
中图分类计算机的应用;
关键词
Satellite image; Lineament; Segment tracing algorithm; Digital elevation models; Fracture orientation;

Construction and analysis of interpreted fracture planes through combination of satellite-image derived lineaments and digital elevation model data

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