Characterization of palmer drought index as a precursor for drought mitigation

Simple item page
dc.contributor.authorLohani, Vinod K.en
dc.contributor.committeechairLoganathan, G. V.en
dc.contributor.committeememberCox, David F.en
dc.contributor.committeememberMostaghimi, Saieden
dc.contributor.committeememberKibler, David F.en
dc.contributor.committeememberYounos, Tamimen
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T21:17:12Zen
dc.date.adate2007-08-03en
dc.date.available2014-03-14T21:17:12Zen
dc.date.issued1995-08-15en
dc.date.rdate2007-08-03en
dc.date.sdate2007-08-03en
dc.description.abstractCoping with droughts involves two phases. In the first phase drought susceptibility of a region should be assessed for developing proper additional sources of supply which will be exploited during the course of a drought. The second phase focuses on the issuance of drought warnings and exercising mitigation measures during a drought . These kinds of information are extremely valuable to decision making authorities. In this dissertation three broad schemes i) time series modeling, ii) Markov chain analysis, and iii) dynamical systems approach are put forward for computing the drought parameters necessary for understanding the scope of the drought. These parameters include drought occurrence probabilities, duration of various drought severity classes which describe a region's drought susceptibility, and first times of arrival for non drought classes which signify times of relief for a drought-affected region. These schemes also predict drought based on given current conditions. In the time series analysis two classes of models; the fixed parameter and the time varying models are formulated. To overcome the bimodal behavior of the Pallner Drought Severity Index (PDSI), primarily due to the backtracking scheme to reset the temporary index values as the PDSI values, the models are fitted to the Z index in addition to the PDSI for the forecasting of the PDSI.en
dc.description.degreePh. D.en
dc.format.extentviii, 288 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-08032007-142141en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08032007-142141/en
dc.identifier.urihttp://hdl.handle.net/10919/39044en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1995.L643.pdfen
dc.relation.isformatofOCLC# 34163952en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectdrought effectsen
dc.subject.lccLD5655.V856 1995.L643en
dc.titleCharacterization of palmer drought index as a precursor for drought mitigationen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V856_1995.L643.pdf
Size:
8.8 MB
Format:
Adobe Portable Document Format
Download

Collections

Doctoral Dissertations