A new approach to landslide assessment using Depth-Number fractal model

سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 1

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شناسه ملی سند علمی:

JR_ECOPER-11-1_002

تاریخ نمایه سازی: 2 دی 1403

چکیده مقاله:

Aim: Landslide classification using a fractal model at the Tajan river basin in northern Iran is the study intended as a new approach based on ۱۴۲ landslide information data set. Materials & Methods: The obtained results were interpreted using the Depth–Number (Dp–N) fractal model and a fairly wide set of information available for each landslide class, consisting of Digital Elevation Model (DEM), rainfall, landuse, geology (lithology and fault) and drainage network data. Findings: The log–log plot shows five classes for depth (weakly, moderately, highly, strongly, and extremely magnitude) which shows that the extremely magnitude landslides have depths higher than ۱۹.۹۵ m in the NE, middle, western, and SE parts of the Tajan basin. The strong (۵-۱۹.۹۵ m) and high (۲.۴-۵ m) magnitude landslides happened in the northern, NE, western and NW parts. The results, which were matched up to landuse, drainage network, DEM, and fault allocation patterns revealed an affirmative correlation between landslide classes and the particulars in the area. In addition, the coefficient of determination, R۲, for each population shows that the classification has been done correctly using the Dp-N fractal model. Amounts of P-value obtained from paired samples t-test and ANOVA showed that the separated categories are in incongruity with each other and are significantly different (sig=۰.۰۰۰). Conclusion: Results show that separating the populations of landslides based on a parameter as magnitude and the difference between the populations’ magnitude of landslides should be considered in landslide susceptibility zonation.

نویسندگان

Mohammadali Hadian Amri

Department of Soil Conservation and Watershed Management, Mazandaran Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran.

Karim Solaimani

Department of Soil Conservation and Watershed Management, Mazandaran Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran.

Ataollah Kavian

Department of Soil Conservation and Watershed Management, Mazandaran Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran.

Peyman Afzal

Department of Soil Conservation and Watershed Management, Mazandaran Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran.

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