Akademik Veri Yönetim Sistemi
Mediterranean Geoscience Reviews, 2026 (Scopus)
There is a growing consensus that one of the most common effects of climate change will be an increase in the frequency and severity of extreme weather events. In regions with distinct climatic regimes and complex morphological settings, notably in the Mediterranean basin, this trend underscores the urgency of implementing timely and effective strategies to mitigate geohazards induced by extreme rainfall. Although the literature on this topic has expanded in recent years, research on how clast shape, size, and weight affect transport distances, using direct field-based instruments and in situ observations, remains limited. This study focuses on a debris-flow event triggered by extreme rainfall in gully channels on Akziyaret Hill in Şanlıurfa province, southeastern Türkiye, in May 2012. The factors influencing the travel distance of 60 clasts, varying in size, weight, and shape, that were previously painted and placed in gully channels were analyzed. In addition, sediments accumulated in two traps placed in the channels were collected after each rainy season and subjected to laboratory sieve analysis to examine the storage characteristics of debris-flow-transported sediment. Multiple Linear Regression analysis showed that clast-shape characteristics were significant predictors of transport distance, whereas weight was not. When the grain-size distribution curves of the sediments captured in the traps were considered alongside the statistical analyses, both the percentile metrics and the trap locations showed marked differences in their central tendency and variability. Moreover, further research is required to elucidate how slope gradients and hydrodynamic conditions within gully channels contribute to the observed differences in grain-size distributions during deposition.