نتایج جستجو برای: landslide index

تعداد نتایج: 402532  

ژورنال: علوم آب و خاک 2018

Ziarat drainage basin, in the southern part of Gorgan city, is exposed to mass movement, especially landslide occurrence, due to geologic, geomorphologic, and anthropogenic reasons. The objectives of this study were to predict landslide susceptibility and to analyze the effective factors using rare events logistic regression. In view of this, the map layers of the variables including geology, l...

2012
Jin-King Liu Kuo-Hsin Hsiao Tian-Yuan Shih

This study analyzes multi-temporal LiDAR data of high accuracy and high resolution by installing a geomorphometric model for extracting landslides. First, two sets of LiDAR data were acquired for before and after a heavy rainfall event. The landslides which took place from 2005 to 2009 were classified automatically by satellite images, and subsequently the landslides were interpreted and edited...

2015

This paper presents rainfall-induced landslide thresholds and predicts landslide hazard in Kuala Lumpur metropolitan city and surrounding areas. Landslide events from 2000 to 2012 were collected. The long and short antecedent rainfall days were prepared for landslide and non-landslide days simultaneously. First, threshold analysis was conducted by using data obtained from rainfall stations loca...

Journal: :مرتع و آبخیزداری 0
حاجی کریمی دانشیار دانشکدة کشاورزی دانشگاه ایلام فتح الله نادری کارشناس ارشد ژئومورفولوژی و مدرس دانشگاه پیام نور ایلام بهروز ناصری عضو هیئت علمی دانشگاه آزاد اسلامی، واحد ایلام علی سلاجقه استاد دانشکدة کشاورزی و منابع طبیعی دانشگاه تهران

distinguishing the susceptible areas to landslide using different landslide susceptibility mapping (lsm) models is one of the primitive and basic works to reduce probable damages and reduce risk. the main purpose of this research is the efficiency evaluation of four methods including information value (winf), valuing area accumulation (wa), analytical hierarchy process (ahp), kopta-joshi propos...

Journal: :Remote Sensing 2016
Cheila Avalon Cullen Rafea Al-Suhili Reza Khanbilvardi

Rainfall-induced shallow landslides are one of the most frequent hazards on slanted terrains. Intense storms with high-intensity and long-duration rainfall have high potential to trigger rapidly moving soil masses due to changes in pore water pressure and seepage forces. Nevertheless, regardless of the intensity and/or duration of the rainfall, shallow landslides are influenced by antecedent so...

Journal: :Remote Sensing 2012
Luca Brocca Francesco Ponziani Tommaso Moramarco Florisa Melone Nicola Berni Wolfgang Wagner

Predicting the spatial and temporal occurrence of rainfall triggered landslides represents an important scientific and operational issue due to the high threat that they pose to human life and property. This study investigates the relationship between rainfall, soil moisture conditions and landslide movement by using recorded movements of a rock slope located in central Italy, the Torgiovannett...

2006
P. Tarolli

This paper introduces a new approach for determining the most likely initiation points for landslides from potential instability mapped using a terrain stability model. This approach identifies the location with critical stability index from a terrain stability model on each downslope path from ridge to valley. Any measure of terrain stability may be used with this approach, which here is illus...

Journal: :ISPRS Int. J. Geo-Information 2017
Xiaolong Deng Lihui Li Yufang Tan

In this paper, we propose a methodology for validating landslide susceptibility results in the Pinggu district (Beijing, China). A landslide inventory including 169 landslides was prepared, and eight factors correlated to landslides (lithology, tectonic faults, topographic elevation, slope gradient, aspect, slope curvature, land use, and road network) were processed, integrating two techniques,...

2016
J. L. Zêzere R. M. Trigo M. Fragoso S. C. Oliveira R. A. C. Garcia A. C. Garcia

Landslides occurred in the Lisbon area during the last 50 years were almost always induced by rainfall and have been used to establish rainfall thresholds for regional landslide activity. In 2006, three new rainfall-triggered landslide events occurred in the study area, namely on the 20 March, the 25–27 October, and the 28 November. Landslide events occurred in March and October 2006 include sh...

Journal: :Remote Sensing 2017
Alessandro C. Mondini

Landslides cause damages and affect victims worldwide, but landslide information is lacking. Even large events may not leave records when they happen in remote areas or simply do not impact with vulnerable elements. This paper proposes a procedure to measure spatial autocorrelation changes induced by event landslides in a multi-temporal series of synthetic aperture radar (SAR) intensity Sentine...

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