Landslide susceptibility analysis of YBasin in Bingol through the index method

Çalışmanın Amacı: Bu çalışmada İndeks Metodu kullanılarak Yamaç Havzası için heyelan duyarlılık analizlerinin yapılması amaçlanmıştır. Çalışma Alanı: Yamaç Havzası, Bingöl'ün güneyinde yer almakta olup, 78 km2 alan kaplamaktadır. Kuzeyi ile güneyi arasında yükselti farkının 1000 m'yi bulduğu havzada litoloji aglomera, tüf, konglomera ve kumtaşından oluşmaktadır. Yağış miktarının fazla olduğu inceleme alanında, bitki örtüsü seyrek olup, akarsu yoğunluğu yüksektir. Doğal koşulların elverişli olması nedeniyle meydana gelen heyelanlar önemli ekonomik kayıplara yol açmaktadır. Materyal ve Yöntem: Bu çalışmada litoloji, eğim, bakı, Normalize Fark Bitki İndeksi (NDVI), akarsu ağlarına uzaklık ve yamaç eğriselliği parametreleri kullanılarak Yamaç Havzası için heyelan duyarlılık analizleri yapılmıştır. İndeks metodu kullanılarak oluşturulan duyarlılık haritasına göre havzanın kuzeyi, kuzeybatısı ve batısında heyelan duyarlılığı oldukça yüksek olup, Yamaç ve Olukpınar köyleri arasında karayolu duyarlılığın yüksek olduğu alandan geçirilmiştir. Araştırma vurguları: Yörede yerleşmeler kurulurken ve yollar yapılırken doğal çevre koşulları dikkate alınmamıştır. Bu nedenle heyelanlar her yıl önemli ekonomik kayıplara neden olmaktadır. Heyelanların meydana getireceği sorunları azaltmak için havza ölçeğinde planlama çalışmalarının hızlandırılması gerekmektedir

İndeks metodu ile YHavzası’nın (Bingöl) heyelan duyarlılık analizi

Aim of study: The present study aims to analyze the landslide susceptibility of Yamaç Basin by applying the index method. Area of study: Covering an area of 78 km2, Yamaç Basin is located in the southern part of Bingöl Province. The basin is composed of lithological agglomerate, tuff, conglomerate and sandstone. The difference in elevation between the northern and southern part of the basin reaches as high as 1000.00 m. Heavy precipitation, sparse vegetation, and high levels of river density have been observed in the basin. Material and Methods: In this study landslide susceptibility of Yamaç Basin was analyzed by using the parameters of lithology, slope, aspect, normalized difference vegetation index (NDVI), distance to river systems and curvature. Main results: According to the susceptibility map based on the index method, landslide susceptibility is very high in northern, western and northwestern parts of the basin where a land route stretches from Yamaç to Olukpınar Village. Research highlights: Natural and environmental factors were not evaluated during either the construction of the first settlement or of the first road. Thus, landslides cost significant economic losses every year. Therefore, it is urgently necessary to carry out studies on basin-scale planning in order to cope with the damages and problems caused by landslides

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