نتایج جستجو برای: Lineament
تعداد نتایج: 376 فیلتر نتایج به سال:
To study the relationship between deep groundwater productivity and lineament, we use several lineament maps which are lineament map, lineament length density map, lineament cross-point density map and others from Remote Sensing. The avenue script files for calculating the lineament statistics, the lineament length density, lineament cross-point density value and the distance between a groundwa...
The main objective of this work is to design an automatic image processing tool for lineament mapping from LANDSAT-TM satellite data. In doing so, three procedures are involved: (i) image enhancement using histogram equalization technique; (ii) automatic lineament detection using Canny algorithm; and (iii) three-dimensional (3D) lineament visualization using SRTM data. The study shows that Cann...
Study of the structural changes in the Popocatepetl volcano in Mexico related to microseismicity by applying the lineament analysis to the Aster (Terra) satellite data. Abstract Mexico is one of the most volcanically active regions in North America. Volcanic activity in central Mex-ico is associated with the subduction of the Cocos and Rivera plates beneath the North American plate. Periods of ...
Geological structures, such as faults and fractures, appear as image discontinuities or lineaments in remote sensing data. Geologic lineament mapping is a very important issue in geo-engineering, especially for construction site selection, seismic, and risk assessment, mineral exploration and hydrogeological research. Classical methods of lineaments extraction are based on semi-automated (or vi...
Earth consists of hard rock layers where water is restricted to secondary permeability, and thus to fractures and the weather zones. Structural geology studies, geologic lineaments and their pattern information are essential for better planning and execution of projects to avoid any natural hazards. Satellite images, aerial photographs and digital elevation models will give lineament informatio...
Lineament enhancement is an important subject in image,processing. In this paper a simple but powerful lineament enhancement technique is presented, which consists of a unique differentiation and a directional filtering. A preprocessing and postprocessings are also described. And some results from LANDSAT images are selected and exhibited for comparison of the effects of several parameters in e...
The remotely sensed data provides synoptic viewing and repetitive coverage for thematic mapping of natural resources. In the present study hydrogeomorphological mapping has been carried out in Ottanchattiram Block, Dindugal District, Tamil Nadu for delineating groundwater potential zones. Landsat ETM+ Geocoded FCC data in conjunction with Survey of India toposheet (1:50000 scale) were used for ...
Introduction: The mapping of lineaments from digital remote sensing data is one of the techniques used in the structural and tectonic characterization of a planet. Lineament mapping on Mars is traditionally made using digital imagery [1,2]. MOLA altimetry data was also used to the visual interpretation and extraction of tectonic features from Mars surface [3]. All these works rely on traditiona...
Introduction: The Sudbury impact structure is one of three large complex impact basins on Earth that provide unique opportunities to understand the structural characteristics of multi-ring impact basins [1]. The impact event formed ~1.85 Ga, resulting in a ~200 km diameter impact structure [2]. The structural expression at Sudbury is very complex with evidence of extensive post-impact tectonism...
This work introduces a new approach for modification of adaptive Lee algorithm for semautomatically detects geological features from RADARSAT-1 SAR data. This is based on modification of Lee algorithm formula by using 2D Gaussian convolution formula. The result shows that the new formula of Lee algorithm can be delineated lineament features in RADARSAT-1 SAR data. The new formula based on 2D Ga...
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