Hydroclimatic variability in northeast Turkey: Identifying climate and river flow dynamics and controls
Başlık çevirisi mevcut değil.
- Tez No: 400204
- Danışmanlar: DR. DAVİD M. HANNAH, DR. WARREN J. EASTWOOD
- Tez Türü: Doktora
- Konular: Çevre Mühendisliği, Environmental Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2011
- Dil: İngilizce
- Üniversite: The University of Birmingham
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 300
Özet
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Özet (Çeviri)
The East Black Sea (EBS) and the Çoruh River basins (ÇRB) of northeast Turkey have anumber of challenging water related issues of socio-economic and ecological importance.This PhD thesis aims to understand hydroclimatological variability across Turkey taking alarge-scale perspective by defining precipitation regimes and extremes and then focussing onthe climatic and basin drivers of river flow variability in northeast Turkey region. At thenational-scale, Turkey exhibits six precipitation regime regions of which three characterisenortheast region. The northeast and southwest coastal regions of Turkey are characterised bythe highest frequency of extreme precipitation events. The mountainous area of the EBS isdefined by May-June Peak river flow regime, while ÇRB is characterised by April-May Peakflow regime. Intra-annual variability in the timing of river flow over northeast Turkey iscontrolled mainly by the regional climatic variability. Spring rainfall maxima together withthe contribution of snowmelt generate high river flow amounts for the ÇRB. The May-Juneriver flow peak in the EBS is linked to snowmelt. Important changes are detected intemperature extremes, also in precipitation and river flow for some cases. Regionalprecipitation and temperatures for September-May period have an important influence onriver flow extremes. Temperature variability across northeast Turkey is closely linked toseasonal indices of East-North Atlantic teleconnection patterns, especially during winter andthe significant results demonstrate a spatially coherent pattern across the region. This studyprovides important new data for the assessment of management of available water resourcesas well as future water resource stress.
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