Regional Wet and Dry Spell Analysis with Heterogeneous Probability Occurrences
Publication: Journal of Hydrologic Engineering
Volume 20, Issue 9
Abstract
Wet and dry spells are among the most significant natural phenomena because they affect the water resources, crop yield, and food demand, causing surpluses and deficits within a region. Wet- and dry-induced natural disasters have increased due to climate change effects with their temporal and spatial coverage during the last two decades because of anthropogenic and naturally unexpected developments such as the global warming implying greenhouse effect and precipitation deficiency. Many countries have set up national drought and flood preparedness plans in the expectation of reducing societal vulnerability to such effects by the adaptation of preventive anticipatory policies and programs. Although wet- or dry-prone countries may have different causal effects, the drought and flood evaluation methodologies are common irrespective of geographical locations. It is therefore necessary to elaborate on different wet and dry hazard assessment methodologies on a scientific basis so as to be useful to all concerned parties whether hydrologist, agriculturalist, meteorologist, researcher, or administrator. This paper provides regional probabilistic wet and dry period areal coverage modeling, which is useful for temporal and spatial wet or dry risk predictions and parameter assessments. The basis of the methodology is mutually exclusive and has independent subareal (site) dry and wet spell heterogeneous probabilities. Derived expressions are general and reduce to a simple Bernoulli (homogeneous) trial case as available in the literature. The application of the proposed methodology is presented for six precipitation sites in the northwestern part of Turkey.
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References
Chung, C. H., and Salas, J. D. (1999). “Drought occurrence probabilities and risks of dependent hydrologic processes.” J. Hydrol. Eng., 259–268.
Downer, R., Siddiqui, M. M., and Yevjevich, V. (1967). Applications of runs to hydrologic droughts, Colorado State Univ., Fort Collins, CO.
Dracup, A. J., Lee, K. S., and Paulson, E. G. (1980). “On the statistical characteristics of drought events.” Water Resour. Res., 16(2), 289–296.
Feller, W. (1967). An introduction to probability theory and its application, Wiley, New York.
Guerrero-Salazar, P. L. A., and Yevjevich, V. (1975). “Analysis of drought characteristics by the theory of runs.”, Colorado State Univ., Fort Collins, CO.
Gumbel, E. J. (1963). “Statistical forecast of droughts.” Bull. Int. Assoc. Sci. Hydrol., 8(1), 5–23.
Lee, T., Modarres, R., and Ouarda, T. B. M. J. (2012). “Data-based analysis 371 of bivariate copula tail dependence for drought duration and severity.” Hydrol. Process., 27(10), 1454–1463.
Llamas, J., and Siddiqui, M. M. (1969). “Runs of precipitation series.”, Colorado State Univ., Fort Collins, CO.
Millan, J., and Yevjevich, V. (1971). “Probabilities of observed droughts.”, Colorado State Univ., Fort Collins, CO.
Mishra, A. K., and Singh, V. P. (2010). “A review of drought concepts.” J. Hydrol., 391(1–2), 202–216.
Mishra, A. K., Singh, V. P., and Desai, V. R. (2009). “Drought characterization: A probabilistic approach.” Stoch. Environ. Res. Risk Assess., 23(1), 41–55.
Panu, U. S., and Sharma, T. C. (2002). “Challenges in drought research: some perspectives and future directions.” J. Hydrol. Sci., 47, 19–30.
Saldarriaga, J., and Yevjevich, V. (1970). “Application of run-lengths to hydrologic time series.”, Colorado State Univ., Fort Collins, CO.
Şen, Z. (1976). “Wet and dry periods for annual flow series.” J. Hydraulic Eng. Div., 102(10), 1503–1514.
Şen, Z. (1977). “Run-sums of annual flow series.” J. Hydrol., 35(3–4), 311–324.
Şen, Z. (1980a). “Regional drought and flood frequency analysis: Theoretical consideration.” J. Hydrol., 46(3–4), 265–279.
Şen, Z. (1980b). “Statistical analysis of hydrologic critical droughts.” J. Hydraul. Div., 106(1), 99–115.
Şen, Z., et al. (2010). The impacts of climate change on Istanbul and Turkey water resources, Istanbul Metropolitan Municipality, Istanbul Water and Sewerage Administration, Turkish Water Foundation, Turkey.
Şen, Z., and Boken, V. K. (2005). Techniques to predict agricultural droughts, Oxford University Press, Oxford, U.K., 40–54.
Smith, K. (2001). “Environmental hazards.” Assessing risk and reducing disaster, Routledge, New York.
Tase, N. (1976). “Area-deficit-intensity characteristics of droughts.”, Colorado State Univ., Fort Collins, CO.
Wilhite, D. A. (1996). “A methodology for drought preparedness.” Nat. Hazards, 13(3), 229–252.
Yevjevich, V. (1967). “An objective approach to definitions and investigations of continental hydrologic drought.”, Colorado State Univ., Fort Collins, CO.
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© 2014 American Society of Civil Engineers.
History
Received: Jan 12, 2013
Accepted: Nov 10, 2014
Published online: Dec 22, 2014
Discussion open until: May 22, 2015
Published in print: Sep 1, 2015
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