Long-term spatio-temporal drought variability in Turkey

Basit Öğe Kaydı
dc.authorid0000-0003-3108-8167
dc.authorid0000-0003-2754-5492
dc.contributor.authorDabanlı, İsmail
dc.contributor.authorMishra, Ashok K.
dc.contributor.authorŞen, Zekai
dc.date.accessioned10.07.201910:49:13
dc.date.accessioned2019-07-10T19:58:17Z
dc.date.available10.07.201910:49:13
dc.date.available2019-07-10T19:58:17Z
dc.date.issued2017
dc.departmentİstanbul Medipol Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, İnşaat Mühendisliği Bölümü
dc.descriptionWOS: 000411541800060
dc.description.abstractThe spatio-temporal variability of drought is presented by evaluating homogeneously distributed 250 station records from 1931 to 2010 for 80 years' duration in Turkey. The drought analysis is implemented using Standardized Precipitation Index (SPI) in terms of SPI-1, SPI-3, SPI-6, SPI-6As (SPI-6 April to September) and SPI-12. The principle component analysis (PCA) is applied to SPI time series to identify spatial and temporal drought patterns. SPI time series are classified into two groups (1st group: SPI-1, SPI-3, SPI-6As; and 2nd group: SPI-6 and SPI-12) according to the similarity in spatial drought patterns. SPI-3 and SPI-12 are selected as representative members of each group for spatio-temporal analysis. A relationship among correlation area (An), correlation coefficient (CC), principle component numbers (FA) and total variances explained (V-exp) are investigated for identifying four well-defined drought vulnerable homogeneous regions over Turkey mainland. Mean percentages of extreme, severe, and moderate drought areas are calculated as 3.13% (2.81%), 3.75% (4.06%) and 7.19% (7.50%) for SPI-3 (SPI-12) based on 80 years in all drought vulnerable regions. Spectral characteristics of drought are also investigated based on fast Fourier transform (FFT) method. It is observed that while southeastern and western parts of Turkey are more stable due to the highly-correlated variances of spatial patterns; central parts and few pockets in northern areas of Turkey are less stable regions because of the low-correlated variance scores (below 10%). Furthermore, the impact of extreme phases of the ENSO (El Nino/La Nina) on droughts in four drought regions over Turkey is discussed.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [1059B141501044]; TUBITAKen_US
dc.description.sponsorshipThis study is supported by The Scientific and Technological Research Council of Turkey (TUBITAK) with grand number 1059B141501044. The corresponding author would like to thank TUBITAK for its research support at Clemson University. Also, the authors wish to thank Turkish State Meteorological Service (TSMS) for the supply of long-term monthly mean climatic variables.en_US
dc.identifier.citationDabanlı, İ., Mishra, A. K. ve Şen, Z. (2017). Long-term spatio-temporal drought variability in Turkey. Journal of Hydrology, 552, 779-792. https://dx.doi.org/10.1016/j.jhydrol.2017.07.038
dc.identifier.doi10.1016/j.jhydrol.2017.07.038
dc.identifier.endpage792
dc.identifier.issn0022-1694
dc.identifier.issn1879-2707
dc.identifier.scopusqualityQ1
dc.identifier.startpage779
dc.identifier.urihttps://dx.doi.org/10.1016/j.jhydrol.2017.07.038
dc.identifier.urihttps://hdl.handle.net/20.500.12511/3142
dc.identifier.volume552
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Bv
dc.relation.ecinfo:eu-repo/grantAgreement/TUBITAK/SOBAG/1059B141501044
dc.relation.ispartofJournal of Hydrologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectDrought
dc.subjectSPI
dc.subjectPrincipal Component Analysis
dc.subjectSpectral Analysis
dc.subjectENSO
dc.subjectTurkey
dc.titleLong-term spatio-temporal drought variability in Turkey
dc.typeArticle

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
Küçük Resim Yok
İsim:
Dabanli-İsmail-2017.pdf
Boyut:
5.23 MB
Biçim:
Adobe Portable Document Format
Açıklama:
Tam Metin / Full Text
İndir

Koleksiyon

Scopus İndeksli Yayınlar Koleksiyonu
Makale Koleksiyonu
Makale Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu