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USE OF GEOSTATISTICS TO EVALUATE WATER QUALITY CHANGES DUE TO COAL MINING 1
Author(s) -
Rogowski A. S.
Publication year - 1983
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1983.tb05949.x
Subject(s) - aquifer , environmental science , coal , water quality , geostatistics , coal mining , petroleum seep , streams , groundwater , hydrology (agriculture) , soil science , geology , mining engineering , petroleum engineering , spatial variability , waste management , geotechnical engineering , engineering , chemistry , methane , computer science , mathematics , statistics , ecology , computer network , biology , organic chemistry
Large variability of water quality data often makes it difficult to judge whether or not the conditions in an aquifier or a stream are deteriorating or not the conditions in an aquifer or a stream are deteriorating or improving. A technique for separation of variograms into positive and negative difference components is proposed. This technique was applied to water quality data from a requality improved with time on the stripmined and undisturbed areas, declined in a seep and an adjoining stream and remained about the same in the deep mined zone.