Assessment of hydrological drought revisited

Nalbantis, I; Tsakiris, G

dc.contributor.author	Nalbantis, I	en
dc.contributor.author	Tsakiris, G	en
dc.date.accessioned	2014-03-01T01:29:53Z
dc.date.available	2014-03-01T01:29:53Z
dc.date.issued	2009	en
dc.identifier.issn	0920-4741	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19397
dc.subject	Drought prediction	en
dc.subject	Evinos basin	en
dc.subject	Hydrological drought	en
dc.subject	Markov chain	en
dc.subject	SPI	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Water Resources	en
dc.subject.other	Interchanges	en
dc.subject.other	Markov processes	en
dc.subject.other	Stream flow	en
dc.subject.other	Watersheds	en
dc.subject.other	Drought indices	en
dc.subject.other	Effective indices	en
dc.subject.other	Evinos basin	en
dc.subject.other	Hydrological drought	en
dc.subject.other	Hydrological years	en
dc.subject.other	Markov chain	en
dc.subject.other	Meteorological droughts	en
dc.subject.other	Non stationaries	en
dc.subject.other	River basins	en
dc.subject.other	SPI	en
dc.subject.other	Drought	en
dc.subject.other	drought	en
dc.subject.other	index method	en
dc.subject.other	Markov chain	en
dc.subject.other	precipitation assessment	en
dc.subject.other	river basin	en
dc.subject.other	streamflow	en
dc.subject.other	Aetolia and Acarnania	en
dc.subject.other	Eurasia	en
dc.subject.other	Europe	en
dc.subject.other	Evinos River	en
dc.subject.other	Greece	en
dc.subject.other	Southern Europe	en
dc.subject.other	Western Greece	en
dc.title	Assessment of hydrological drought revisited	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s11269-008-9305-1	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s11269-008-9305-1	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	A variety of indices for characterising hydrological drought have been devised which, in general, are data demanding and computationally intensive. On the contrary, for meteorological droughts very simple and effective indices such as the Standardised Precipitation Index (SPI) have been used. A methodology for characterising the severity of hydrological droughts is proposed which uses an index analogous to SPI, the Streamflow Drought Index (SDI). Cumulative streamflow is used for overlapping periods of 3, 6, 9 and 12 months within each hydrological year. Drought states are defined which form a non-stationary Markov chain. Prediction of hydrological drought based on precipitation is also investigated. The methodology is validated using reliable data from the Evinos river basin (Greece). It can be easily applied within a Drought Watch System in river basins with significant storage works and can cope with the lack of streamflow data. © Springer Science+Business Media B.V. 2008.	en
heal.publisher	SPRINGER	en
heal.journalName	Water Resources Management	en
dc.identifier.doi	10.1007/s11269-008-9305-1	en
dc.identifier.isi	ISI:000263510100005	en
dc.identifier.volume	23	en
dc.identifier.issue	5	en
dc.identifier.spage	881	en
dc.identifier.epage	897	en