Effect of Precipitation Characteristics on Spatial and Temporal Variations of Landslide in Kermanshah Province in Iran

Authors

  • Safieh Javadinejad Department of Geography, Earth and Environmental Sciences, University of Birmingham and University of Tehran, Edgbaston St., B152TT, United Kingdom
  • Rebwar Dara Department of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston St., B152TT, United Kingdom
  • Forough Jafary Department of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston St., B152TT, United Kingdom

DOI:

https://doi.org/10.30564/jgr.v2i4.1818

Abstract

Landslide can be defined as the mass movement of sloping slopes under the influence of mass gravity and its stimuli such as earthquakes, floods and flood plains. This phenomenon is one of the natural hazards that every year causes a lot of financial and financial losses in mountainous, rain-fed and seismic areas. Detection of time and the magnitude of land slides are necessary to understand the causes of landslide and to warn potential hazards. In this research, the amount of landslide displacement in Kermanshah province was evaluated by the characteristics of rainfall. To this end, a network of fixed points in and out of the slipping mass of 20 points was created to monitor the amount of displacement on different slip load users and the amount of displacement of each point in 5 time intervals using the Global Positioning System for two-dimensional GPS measurement. The results of the 511-day follow-up showed that the total horizontal displacement of the moving points in the 5 intervals measured at 1658 mm has a monthly displacement rate of 112 mm. Also, the total vertical displacement of moving points at the same time is 899 mm, with a monthly movement rate of 71 mm. Then, precipitation variances such as rainfall, rainfall, precipitation duration, maximum rainfall intensity in the intervals of 10, 20, 30 and 60 minutes and the average rainfall intensity were calculated and extracted for each of the 5 time periods. The drawing of the vectors of points on the topographic map of the area indicated that the direction of mass movement is in the direction of elevation gradient of the region. The results showed that only the precipitation severity with the landslide had a good correlation. The landslide movement had the highest correlation with average rainfall intensity (R = 0.85) and with maximum 30 minutes rainfall (R = 0.67), respectively, and other rainfall characteristics like amount, duration, and type of rainfall had not signifi cantly correlated with movement of landslides.

Keywords:

Characteristics of precipitation, Effects, Landslide, Movement, GPS

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How to Cite

Javadinejad, S., Dara, R., & Jafary, F. (2020). Effect of Precipitation Characteristics on Spatial and Temporal Variations of Landslide in Kermanshah Province in Iran. Journal of Geographical Research, 2(4), 7–14. https://doi.org/10.30564/jgr.v2i4.1818

Issue

Vol. 2 , Iss. 4 (October 2019)

Article Type

Article

License

Copyright © 2020 Safieh Javadinejad, Rebwar Dara, Forough Jafary

Creative Commons License

This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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