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Integration of remote sensing and geographic information systems for geological fault detection on the island of Crete, Greece
Geoscientific Instrumentation, Methods and Data Systems ( IF 1.8 ) Pub Date : 2019-02-06 , DOI: 10.5194/gi-8-45-2019
Mohamed Elhag , Dalal Alshamsi

Fracture systems are of great importance in the field of structural geology. Faults commonly afford easy passage to groundwater and fluids such as hydrothermal fluids and magmas or even contribute to earthquake hazard monitoring. For a geologist, it is not always easy to discern such morphotectonic structures at close range. Both remote sensing techniques and spatial modeling permit the recognition and better understanding of the brittle tectonics in an area. This study was an effort to delineate the tectonic structures on Crete by combining Sentinel-2 satellite data and spatial data. For the enhancement and better discrimination of photolineaments primarily recognized on satellite imagery, a variety of enhancement techniques has been applied. The evaluation of a photolineament as a potential fracture zone was based on several factors: the DEM of the study area, the shaded relief, the slopes and corresponding aspects, the drainage network, the geology and general observations on vegetative coverage appearance. The application of these methods revealed several fracture zones, which we recommend be certified by field investigations. Fault-mapping results may be used for a variety of geological and hydrogeological studies. Indicative places of a large concentration of groundwater are of vital importance for subsequent exploitation by areas of need. The present work may provide useful information for further analysis by geophysicists and seismologists.

中文翻译:

集成遥感和地理信息系统以检测希腊克里特岛的地质断层

断裂系统在构造地质领域中非常重要。断层通常易于进入地下水和流体,例如热液和岩浆,甚至有助于监测地震危险。对于地质学家来说,在近距离识别此类构造构造并不总是容易的。遥感技术和空间建模都可以识别和更好地了解某个地区的脆性构造。这项研究旨在通过结合Sentinel-2卫星数据和空间数据来描绘克里特岛的构造结构。为了增强和更好地辨别主要在卫星图像上识别的光线条,已应用了各种增强技术。评价光纹作为潜在的骨折区域是基于以下几个因素:研究区域的DEM,阴影浮雕,坡度和相应的方面,排水网络,地质以及关于植物覆盖物外观的一般观察。这些方法的应用揭示了几个断裂带,我们建议通过现场调查对它们进行验证。断层测绘结果可用于各种地质和水文地质研究。大量地下水的指示性地点对于随后需要地区的开采至关重要。本工作可能会为地球物理学家和地震学家的进一步分析提供有用的信息。我们建议您通过现场调查证明。断层测绘结果可用于各种地质和水文地质研究。大量地下水的指示性地点对于随后需要地区的开采至关重要。本工作可能会为地球物理学家和地震学家的进一步分析提供有用的信息。我们建议您通过现场调查证明。断层测绘结果可用于各种地质和水文地质研究。大量地下水的指示性地点对于随后需要地区的开采至关重要。本工作可能会为地球物理学家和地震学家的进一步分析提供有用的信息。
更新日期:2019-02-06
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