Análisis de fracturas geológicas extraídas por teledetección en imágenes Landsat TM, ejemplo de la zona de Imilchil-Tounfite (Alto Atlas central, Marruecos)

IF 0.8 4区地球科学 Q3 GEOLOGY

Estudios Geologicos-Madrid Pub Date : 2016-11-24 DOI:10.3989/EGEOL.42328.394

H. E. A. E. Moujahid, Hassan Ibouh, A. Bachnou, M. A. Babram, A. E. Harti

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引用次数: 9

Abstract

The use of remote sensing, in this research, can be summarized in mapping and statistical studies of lineaments on the satellites images of the Jurassic outcrops in the Imilchil-Tounfite area, Central High Atlas of Morocco. This is to apply various manual techniques for extracting lineaments from Landsat TM image. Analytical techniques used in this work are: the principal component analysis (PCA) applied to selective bands of the visible and infrared, which allows creating new images with better visual interpretation. Directional filters N0°, N45°, N90°, and N135° with a 5.5 matrix were used to enhance lineaments in the corresponding perpendicular directions, and therefore to obtain a good discrimination of those structures. Preliminary results highlight a dominant geological fracturing trending ENE/WSW with 52% of the total lineaments, a second fracture trending is WNW/ESE at 23%, a third fracture series trending NE/SW with 20% and finally, a minor series of fractures trending NW/SE with 5% of the total lineaments. Distribution and statistical relationship, between fractures and the affected surface on the one hand and the fracture length on the other hand, shows a network of well-structured fractures. The final lineament map constitutes a contribution to complete the geology and assisting the mining and hydrogeological prospection, in the Imilchil-Tounfite area.

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利用Landsat TM图像遥感提取的地质裂缝分析，以Imilchil-Tounfite地区(摩洛哥中高阿特拉斯)为例

在这项研究中，遥感的使用可以概括为对摩洛哥中央高地图集imilchill - tounfite地区侏罗纪露头的卫星图像的轮廓进行制图和统计研究。这是应用各种手工技术从Landsat TM图像中提取轮廓。在这项工作中使用的分析技术有:主成分分析(PCA)应用于可见光和红外线的选择性波段，这使得创建具有更好视觉解释的新图像成为可能。采用N0°、N45°、N90°和N135°方向滤波器，采用5.5矩阵对相应垂直方向的纹理进行增强，获得了较好的结构识别效果。初步结果显示，主要的地质裂缝走向是ENE/WSW，占总剖面的52%，第二裂缝走向是WNW/ESE，占23%，第三裂缝走向是NE/SW，占20%，最后是一小部分裂缝走向是NW/SE，占总剖面的5%。裂缝与受影响面、裂缝长度之间的分布和统计关系显示出一个结构良好的裂缝网络。最后绘制的地层图有助于完成imilchill - tounfite地区的地质工作，并有助于采矿和水文地质勘查工作。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Estudios Geologicos-Madrid GEOLOGY-

CiteScore

1.40

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Since 1945 Estudios Geologicos publishes original research works, as well as reviews, about any topic on Earth Sciences. Estudios Geologicos is published as one yearly volume, divided into two half-yearly issues. It is edited by the Spanish National Research Council (Consejo Superior de Investigaciones Científicas, CSIC) at the Instituto de Geociencias (CSIC-UCM). Estudios Geologicos provides free access to full-text articles through this electronic edition. Accepted articles appear online as "Forthcoming articles" as soon as the galley proofs have been approved by the authors and the Editor-in-Chief. No changes can be made after online publication.