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A PROPOSED METHOD FOR DROUGHT MONITORING 1
Author(s) -
Chang Tiao J.,
Kleopa Xenia A.
Publication year - 1991
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.1752-1688.1991.tb03132.x
Subject(s) - environmental science , streamflow , precipitation , hydrology (agriculture) , truncation (statistics) , elevation (ballistics) , climatology , statistics , meteorology , mathematics , geography , geology , drainage basin , cartography , geometry , geotechnical engineering
ABSTRACT: Existing definitions of drought have focused on limited hydrologic indicators and are less effective for the purpose of drought monitoring. This study uses historical records of streamflow, precipitation, ground water, temperature, and lake elevation to define drought. Based on the method of truncation, drought durations and conditional probabilities of each indicator were estimated to define the drought severity levels, namely, 70 percent, 80 percent, 90 percent, and 95 percent. A drought monitoring method was developed by a combination of truncation level, duration, and conditional probabilities of five indicators. A six‐month period of the 1988 drought in the central Ohio region was used to test the monitoring method. It was found that the developed method could effectively detect an occurrence of drought.