The Laalam (Algeria) damaging landslide triggered by a moderate earthquake (Mw = 5.2)

Bouhadad, Youcef; Benhamouche, Azzeddine; Bourenane, Hamid; Ouali, A.; Chikh, M.; Guessoum, Nabila

doi:10.1007/s11069-009-9466-0

Cited by 37 publications

(5 citation statements)

References 25 publications

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“…Similarly, the landslide susceptibility varies from location to location but the rainfall-induced landslides have the highest frequency of occurrence (Li et al 2010) particularly in regions characterized by heavy seasonal precipitation (Sengupta et al 2010). Many disastrous landslides triggered by seismic shaking have been studied throughout the world (Bouhadad et al 2010;Kamp et al 2010). Moreover, lithology is widely accepted as one of the most important factors affecting landsliding (Clerici et al 2010) and subjected to a primary driving force such as rainfall or earthquake excitation for their occurrence (Wan et al 2010).…”

Section: Background To Landslide Hazards In Pakistanmentioning

confidence: 99%

Causes and extent of environmental impacts of landslide hazard in the Himalayan region: a case study of Murree, Pakistan

et al. 2010

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Pakistan is located at the cross-roads of plate boundaries, experiencing multiple hazards of earthquake, flood, drought, water-logging, salinization and recurrent landslides. This paper examines the causes and environmental impacts of frequently occurring landslide hazards in the Murree area of Pakistan's Himalayan region. These are wide ranging in nature and in terms of the damage that result. The area under research was divided into eight blocks and randomly data collected. It was observed that landslides mostly occur along the road network and disturbed slopes. Immature geology, a wide variation in climate and degradation of the natural resource-base were found to be some of the causal factors responsible for the landslide hazards. During the past three decades, rapid expansion of urban zones contributed to the changing vulnerability of the area. The analysis revealed that a large majority of the households (75%) in the area have been directly or indirectly affected by landslide hazards. Damages to already scarce agricultural land, infrastructure and other properties are each year a regular and escalating phenomenon. Landslide size, frequency and consequent costs of damage have increased considerably.

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Section: Background To Landslide Hazards In Pakistanmentioning

confidence: 99%

Causes and extent of environmental impacts of landslide hazard in the Himalayan region: a case study of Murree, Pakistan

et al. 2010

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“…Despite the socio-economic and geomorphologic impacts of landslides (Ngeku and Mathu, 1999;Ngeku et al 2004;Jacobs et al 2016), which are expected to increase with global climate change (Nugraha et al, 2015;Broeckx et al 2018), studies are still rare in the Africa continent (Maes et al, 2017, Broeckx et al 2018, considering the available scientific literature (e.g. Knapen et al 2006;Van Den Eeckhaut et al, 2009;Kimaro et al 2010;Moeyersons et al, 2010;Nibigira et al 2013;Msilimba 2010;Msilimba and Holmes 2010;Bouhadad et al 2010;Ndyanabo et al 2011;Che et al 2011;Hardwick 2012;Broothaerts et al 2012;Asma 2013;Maki Mateso and Dewitte 2014;Afungang, 2015;Bourenane et al 2015;Royal Museum for Central Africa, 2016;Maertens 2016;. Also, based on the data presented by Broeckx et al (2018) (i.e.…”

Section: Introductionmentioning

confidence: 99%

A comparative geological, tectonic and geomorphological assessment of the Charlotte, Regent and Madina landslides, Western area, Sierra Leone

Lahai

Anderson

Jalloh

et al. 2021

Geoenviron Disasters

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This work focused on three landslide events that have attracted significant public concern due to the associated calamities they recorded in 1945, 2017 and 2019, i.e. the Charlotte, Regent and Madina landslides, respectively. Their geology, tectonics (structural discontinuities) and geomorphology, i.e. their GTG characteristics were studied to establish links between them and the landslide events.Field surveys were conducted, particularly on the Charlotte landslide, where the identification of geological structures was impeded to an extent by its obliteration by vegetation and sediment accumulations on relatively planar sections of the landslide area. Remote sensing and GIS techniques (earth imagery and drone images) enhanced the mapping and determination of landslides’ geometric and geomorphic parameters. Laboratory analyses of rock and soil samples provided the landslides’ petrological characterisation and were used to determine the particle-size distribution in the slide-prone soil.The study indicated a change in the gabbroic rock composition, variable geomorphological characteristics, and nature/pattern and density of the discontinuities. These factors, to a large extent, determined the nature and magnitude of the rainfall-triggered landslides. Charlotte lithology slightly differed from the other two landslides and recorded higher Silica (Si) and Aluminum (Al) and lower iron (Fe) from X-Ray Fluorescence (XRF) than rocks of Regent and Madina landslides. The study also revealed only a tenuous correlation between rock composition and weathering depth. The slope angles at the landslides’ prominent scarps (depletion zone) are steep (> 45 degrees) with altitudes of approximately 270 m, 200 m and 470 m above sea level for Charlotte, Regent and Madina, respectively. Unlike the Charlotte landslide, both Regent and Madina landslides are active, but geometrically, their area, length and run-out distances have relatively high variance with a coefficient of variance equals to 1. Information derived from this work can help understand the spatial variation in landslide characteristics and develop a susceptibility map.

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“…This mountainous region, known as Babor, is characterized by multiple faults (Figure 8), which have caused moderate to strong earthquakes in recent centuries [49]. The area is prone to flooding and landslides [50].…”

Section: ) Case Studymentioning

confidence: 99%

Road Vulnerability Assessment in the Case of a Seismic Event

2023

Journal of Southwest Jiaotong University

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Roads often suffer significant damage following an earthquake, which can be attributed to various factors. This study aims to identify and quantify these factors and provide an estimation of the vulnerability index for the studied road section. The vulnerability index enables the classification of a section based on its vulnerability. To achieve this, we propose an estimation method for the seismic vulnerability index of a road, which uses the Analytic Hierarchy Process (AHP) to determine the weights of the identified parameters. The resulting vulnerability index value facilitates the classification of the road section using the proposed scale. Additionally, we present several case studies that validate the obtained results, aligning with seismic feedback. Moreover, a seismic scenario was simulated on an urban network using a geographic information system (GIS) to predict the seismic behavior of the road network in the target city.

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The Laalam (Algeria) damaging landslide triggered by a moderate earthquake (Mw = 5.2)

Cited by 37 publications

References 25 publications

Causes and extent of environmental impacts of landslide hazard in the Himalayan region: a case study of Murree, Pakistan

Causes and extent of environmental impacts of landslide hazard in the Himalayan region: a case study of Murree, Pakistan

A comparative geological, tectonic and geomorphological assessment of the Charlotte, Regent and Madina landslides, Western area, Sierra Leone

Road Vulnerability Assessment in the Case of a Seismic Event

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