Investigation of annual droughts of Boyabat region using different meteorological drought indices

Year 2022, , 1 - 8, 30.06.2022

Utku Zeybekoğlu , Ahmet Şahin

https://doi.org/10.51764/smutgd.993652

Abstract

Drought, which is a natural disaster that increases its effects day by day, can cause significant damage. Several drought indices were carried out to determine drought. By means of these indices, drought can be determined and necessary precautions can be taken against drought. In this study, an annual drought survey was conducted using the rainfall records of the Boyabat meteorological observation station in the Kizilirmak River Basin in the 1976-2017. In the drought analysis, the meteorological drought indices Z-Score Index, China-Z Index and Modified China-Z Index were used. The dry and wet periods of the station were determined by means of meteorological drought indices, and the driest and wettest years were also determined. In the study, which also examined the compatibility between indices, it was determined that the coefficient of determination values of MCZI-ZSI and MCZI-CZI were higher than the ZSI-CZI. Drought events in Boyabat region should be investigated using different indices.

Keywords

Drought, Drought Monitoring, Drought Indices, Boyabat

Boyabat Yöresi Yıllık Kuraklıklarının Farklı Meteorolojik Kuraklık İndisleri Kullanılarak Araştırılması

Abstract

Etkilerini her geçen gün artıran bir doğal afet olan kuraklık, önemli zararlar verebilmektedir. Kuraklığı belirlemek için çeşitli kuraklık indeksleri yapılmıştır. Bu endeksler sayesinde kuraklık belirlenebilir ve kuraklığa karşı gerekli önlemler alınabilir. Bu çalışmada, Kızılırmak Havzasında Boyabat meteorolojik gözlem istasyonuna ait 1976-2017 yağış kayıtları kullanılarak yıllık kuraklık araştırması yapılmıştır. Kuraklık analizinde meteorolojik kuraklık endeksleri olan Z-Score Index, China-Z Index ve Modified China-Z Index kullanılmıştır. İstasyonun kurak ve yağışlı dönemleri meteorolojik kuraklık indeksleri aracılığıyla belirlenmiş, ayrıca en kurak ve en yağışlı yıllar da belirlenmiştir. Endeksler arası uyumun da incelendiği çalışmada, MCZI-ZSI ve MCZI-CZI korelasyon katsayısı ZSI-CZI’ye göre daha yüksek olduğu belirlendi. Boyabat bölgesindeki kuraklık olayları farklı endeksler kullanılarak araştırılmalıdır.

Keywords

Kuraklık, Kuraklık İzleme, Kuraklık Endeksleri, Boyabat

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