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Relationship Between Lineaments and Ground Water Occurrence in Western Botswana
Author(s) -
Magowe Magowe,
Carr James R.
Publication year - 1999
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.1999.tb00985.x
Subject(s) - lineament , geology , kriging , thematic mapper , raster graphics , thematic map , yield (engineering) , remote sensing , terrain , digital elevation model , cartography , geography , satellite imagery , tectonics , statistics , mathematics , seismology , computer science , materials science , artificial intelligence , metallurgy
Asemiarid region of western Botswana, the Ghanzi‐Makunda area, is the focus of a study to determine the relationship between lineaments and well yield. This relationship is inferred from geologic maps, aerial photographs, and Landsat TM (thematic mapper) images in conjunction with a well yield map produced using indicator kriging and based on 226 globally positioned wells. A composite image of Landsat TM, digital well yield, lineament trace, and well location data, formed using a raster‐based geographic information systems (GIS) technique, visually identifies a correlation between well yield, lineament density, and darker tones on Landsat TM images. Higher fracture densities correlate positively with higher well yields. Regression analysis identifies a statistically significant correlation between distance to lineament intersections and median well yield.