ŞEBNEM ÖKTEN & HASAN YAZICIGİL

2411

Ergene Havzası Kumlu Kompleks Akifer Sisteminin Emniyetli ve Sürdürülebilir Verimlerinin Araştırılması, Trakya Bölgesi, Türkiye

Bu çal›flman›n amac› Türkiye’nin kuzeybat›s›ndaki Ergene havzas› Kumlu Kompleks akifer sisteminin emniyetli ve sürdürülebilir verimlerinin belirlenmesidir. Havzadaki en yayg›n ve en verimli akifer olan Kumlu Kompleks akiferin say›sal yeralt›suyu modeli oluflturulmufltur. Sonlu farklar yeralt›suyu modeli akiferdeki kararl› ve karars›z ak›m› benzefltirmesi için kullan›lm›flt›r. Model kalibrasyonu 1970 y›l›n›n Ocak ay›nda saha koflullar›nda gözlenen su seviyeleri ile yap›lan kararl› ak›m koflullar›nda kalibrasyon ve bunu izleyen Ocak 1970–Aral›k 2000 döneminde gözlenen su seviyeleri ile yap›lan karars›z ak›m koflullar›nda kalibrasyon olmak üzere iki aflamada gerçeklefltirilmifltir. Ortaya ç›kan model Ocak 2001 ve Aral›k 2030 y›llar› aras›n› kapsayacak flekilde 30 y›ll›k bir planlama dönemi göz önüne al›narak akifer sisteminin çeflitli pompaj koflullar› alt›ndaki tepkisini belirlemek ve alternatif yeralt›suyu yönetim senaryolar› kurulmas› için kullan›lm›flt›r. Planlama dönemi için toplam sekiz yönetim senaryosu karars›z ak›m koflullar› alt›nda kurulmufl ve sonuçlar akiferin emniyetli ve sürdürülebilir verimlerinin belirlenmesinde kullan›lm›flt›r. De¤ifl-tokufl e¤risi fleklinde sunulmufl olan sonuçlar, günümüzdeki pompaj koflullar›n›n akiferin emniyetli ve sürdürülebilir verimlerinin üstünde oldu¤unu göstermifltir. Akifer sisteminin sürdürelebilir geliflmesini teflvik edecek bir dizi uygun yönetim politikalar› ve planlar› önerilmifltir. 
Anahtar Kelimeler:

Ergene River basin, calibration, ground-water management, safe yield, sustainable yield

Investigation of Safe and Sustainable Yields for the Sandy Complex Aquifer System in the Ergene River Basin, Thrace Region, Turkey

This study aims to determine the safe and sustainable yields for the Sandy Complex aquifer system in Ergene River basin in northwestern Turkey. A numerical ground-water flow model was developed for the Sandy Complex aquifer, which is the most productive and the most widespread aquifer in the basin. The finite difference ground-water model was used to simulate steady and unsteady flow in the aquifer. The model was calibrated in two steps: a steady-state calibration, by using the observed ground-water levels of January 1970; then a transient calibration, by using the observed ground-water levels for the period of January 1970 and December 2000. The resulting model was used to develop ground-water pumping scenarios in order to predict the changes in the aquifer system under a set of different pumpage conditions for a planning period of 30 years between January 2001 and December 2030. A total of eight pumping scenarios were developed under transient-flow conditions for the planning period, and the results were evaluated to determine the safe and sustainable yields of the aquifer. The results, presented in the form of a trade-off curve, demonstrate that both the safe and the sustainable yield values are exceeded if pumping continues at the present rate. An appropriate suite of management policies and plans are provided that will promote the sustainable development of the aquifer system.
Keywords:

Ergene River basin, calibration, ground-water management, safe yield, sustainable yield,

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Turkish Journal of Earth Sciences-Cover
  • ISSN: 1300-0985
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK
Arşiv
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Investigation of safe and sustainable yields for the sandy complex aquifer system in the Ergene River Basin, Thrace Region, Turkey

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