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Frekans Oranı ve Shannon Entropisi Yöntemi Kullanarak Ezine Çayı Havzası Taşkın Duyarlılık Analizi (Kastamonu-Bozkurt)

Year 2023, Issue: 11, 160 - 178, 15.10.2023
https://doi.org/10.46453/jader.1358845

Abstract

Taşkın olayları, Türkiye’de özellikle Karadeniz Bölgesi’nde yoğun bir şekilde meydana gelen doğal afetlerin başında gelmektedir. Ekstrem yağışlar, Karadeniz Bölgesi akarsu havzalarında, suların ani bir şekilde yüzeysel akışa geçmesi neticesinde taşkın afetinin yaşanmasında etkili olur. Kastamonu Bozkurt sınırları içerisinde yer alan Ezine Çayı havzası da bu taşkın afetinin gerçekleştiği sahalardan biridir. Dar ve derin vadilerde kısıtlı yerleşim alanlarının varlığı ve taşkın yatağı sınırları içerisinde olması nedeniyle, taşkına duyarlı alanların tespit edilmesi kritik önem taşımaktadır. Coğrafi bilgi sistemleri (CBS) bu amaçla taşkına duyarlı sahaların tespit edilmesinde büyük rol oynamaktadır. Bu çalışmada da taşkın duyarlılığının tespit edilmesi amacıyla CBS temelli iki farklı istatistik yöntem kullanılmıştır. Frekans oranı (FR) ve Shannon Entropisi (SE) yöntemi taşkın duyarlılıkların üretilmesinde tercih edilen yöntemlerdir. Taşkın duyarlılık analizlerinin gerçekleştirilmesinde, Sayısal Yükselti Modeli (SYM), Eğim, Bakı, normalize edilmiş bitki örtüsü indeksi (NDVI), Arazi kullanımı, Topografik nemlilik indeksi (TWI), Akarsu aşındırma gücü (SPI), Jeomorfoloji, Normalize edilmiş yerleşim alan indeksi (NDBI), plan eğrisellik, akarsuya mesafe, drenaj yoğunluğu kullanılan parametrelerdir. 2021 yılı ağustos ayı taşkın yayılış alanı verileri dikkate alınarak oluşturulan envanter verisi, çalışmada yapılan analizlerin doğruluğu için tercih edilmiş, bu analiz için alıcı işletim karakteristiği (ROC) eğrisi kullanılmıştır. Elde edilen sonuçlara göre iki değişkenli istatistik olan frekans oranı yöntemi %.0,976 ile daha yüksek sonuç vermiştir.

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Flood Susceptibility Analysis of the Ezine River Basin (Kastamonu-Bozkurt) Using Frequency Ratio and Shannon Entropy Method

Year 2023, Issue: 11, 160 - 178, 15.10.2023
https://doi.org/10.46453/jader.1358845

Abstract

Taşkın olayları, Türkiye’de özellikle Karadeniz Bölgesi’nde yoğun bir şekilde meydana gelen doğal afetlerin başında gelmektedir. Ekstrem yağışlar, Karadeniz Bölgesi akarsu havzalarında, suların ani bir şekilde yüzeysel akışa geçmesi neticesinde taşkın afetinin yaşanmasında etkili olur. Kastamonu Bozkurt sınırları içerisinde yer alan Ezine Çayı havzası da bu taşkın afetinin gerçekleştiği sahalardan biridir. Dar ve derin vadilerde kısıtlı yerleşim alanlarının varlığı ve taşkın yatağı sınırları içerisinde olması nedeniyle, taşkına duyarlı alanların tespit edilmesi kritik önem taşımaktadır. Coğrafi bilgi sistemleri (CBS) bu amaçla taşkına duyarlı sahaların tespit edilmesinde büyük rol oynamaktadır. Bu çalışmada da taşkın duyarlılığının tespit edilmesi amacıyla CBS temelli iki farklı istatistik yöntem kullanılmıştır. Frekans oranı (FR) ve Shannon Entropisi (SE) yöntemi taşkın duyarlılıkların üretilmesinde tercih edilen yöntemlerdir. Taşkın duyarlılık analizlerinin gerçekleştirilmesinde, Sayısal Yükselti Modeli (SYM), Eğim, Bakı, normalize edilmiş bitki örtüsü indeksi (NDVI), Arazi kullanımı, Topografik nemlilik indeksi (TWI), Akarsu aşındırma gücü (SPI), Jeomorfoloji, Normalize edilmiş yerleşim alan indeksi (NDBI), plan eğrisellik, akarsuya mesafe, drenaj yoğunluğu kullanılan parametrelerdir. 2021 yılı ağustos ayı taşkın yayılış alanı verileri dikkate alınarak oluşturulan envanter verisi, çalışmada yapılan analizlerin doğruluğu için tercih edilmiş, bu analiz için alıcı işletim karakteristiği (ROC) eğrisi kullanılmıştır. Elde edilen sonuçlara göre iki değişkenli istatistik olan frekans oranı yöntemi %.0,976 ile daha yüksek sonuç vermiştir.

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There are 75 citations in total.

Details

Primary Language Turkish
Subjects Natural Hazards
Journal Section Articles
Authors

Mustafa Utlu 0000-0002-7508-4478

Early Pub Date October 9, 2023
Publication Date October 15, 2023
Submission Date September 12, 2023
Acceptance Date October 9, 2023
Published in Issue Year 2023 Issue: 11

Cite

APA Utlu, M. (2023). Frekans Oranı ve Shannon Entropisi Yöntemi Kullanarak Ezine Çayı Havzası Taşkın Duyarlılık Analizi (Kastamonu-Bozkurt). Jeomorfolojik Araştırmalar Dergisi(11), 160-178. https://doi.org/10.46453/jader.1358845

Journal of Geomorphological Researches  ( JADER )

Turkish Society for Geomorphology ( www.jd.org.tr )