Spatial and temporal analysis of a global landslide catalog

Kirschbaum, Dalia; Stanley, Thomas; Zhou, Yaping

doi:10.1016/j.geomorph.2015.03.016

Cited by 399 publications

(296 citation statements)

References 27 publications

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“…Globally, landslides are increasingly causing adverse impacts on people, economy and the environment [1][2][3]. These impacts are likely to increase as people continue to encroach and settle close to unstable slopes.…”

Section: Global Regional and Local Overview Of Landslidesmentioning

confidence: 99%

Review of Spatial and Temporal Distribution of Landslides in Tanzania

Ja¹,

Kervyn²

2017

J Ecosyst Ecogr

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This paper intended to inventorize the occurrence of landslides in Tanzania in temporal and spatial terms. Specifically, the inventory focused on identifying areas in Tanzania which are prone to landslides, identifying the frequency of landslide occurrence in the country, identifying the underlying and triggering factors for landslides, the socio-economic impacts of landslides and assessing the people's perception of landslides in Tanzania. Identification and mapping of landslide was achieved through the use primary and secondary sources of information. Primary data was acquired through exploratory field visit to the 5 landslide scars in the north and south Pare Mountains in the northern highlands of Tanzania. Short discussion with local people in the areas was made to gain insights into their perception of landslides. Secondary data was acquired through the review of achieved sources. This review was made in respect of the landslides that were not covered by the aforementioned exploratory field visit. The EM-DAT was also used to provide information on the number of landslide events, fatalities and socio-economic impacts. Google Earth™ search and image interpretation were used to located and describe landslides in other regions of the country that were not covered by the aforementioned exploratory field study. A 90 m resolution Digital Elevation Model (DEM) from USGS for Tanzania was used to map the landslide scars identified through Google Earth search. Google Earth search and image interpretation were supported by secondary information from archived sources. The inventory noted that landslides in Tanzania have received relatively limited attention both in the literature and in government disaster management plans. With exception of studies conducted in Uluguru Mountain in 1970s, no formal landslide research has been made in recent years. Despite extensive web searches, no landslide inventory has been made in Tanzania. This may presumably be due to existing assumption that landslides in Tanzania have low frequency of occurrence and are localized compared to other disasters such as floods, epidemics and drought, whose occurrence affect many more people, drawing more community, government and media attention. This has thus, affected the way landslide events are reported and managed in the country. This assertion however, does not preclude the fact that one/few landslide events, depending on their magnitude, where they occur and nature of elements at risk, can affect significant number of people and vice versa. This inventory has also documented cultural perspectives on landslides. Care must be taken to incorporate appropriate indigenous knowledge and people's perception pertaining to landslides and other disasters as these are critical in designing and implementing culturallyinformed and low cost disaster management strategies. This may, in turn, obviate the need or reduce cost for early warning systems. Landslide information provided by some reviewed sources is limited in time and space. Most of the visi...

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Section: Global Regional and Local Overview Of Landslidesmentioning

confidence: 99%

Review of Spatial and Temporal Distribution of Landslides in Tanzania

Ja¹,

Kervyn²

2017

J Ecosyst Ecogr

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show abstract

“…El sistema de drenaje presenta su mayor caudal durante los períodos de lluvia, principalmente a finales de julio y extendiéndose hasta inicios de octubre, aunque eventos ocasionales ocurren entre mayo y junio (Figura 3). Históricamente, septiembre registra la mayor acumulación mensual de precipitación con cerca de un tercio de la precipitación anual registrada, lapso en que se presenta la mayor cantidad de tormentas y huracanes en el hemisferio norte y que guarda estrecha relación con la ocurrencia de movimientos en masa en América del Norte (Kirschbaum et al, 2015). Debido a su ubicación geográfica, el CSR se encuentra expuesto al impacto recurrente de huracanes y tormentas tropicales provenientes del océano Atlántico.…”

Section: Régimen Hidrológicounclassified

“…La influencia de agentes externos como precipitaciones, sismicidad, vulcanismo y actividades antropogénicas acelera la ocurrencia del fenómeno en periodos de tiempo relativamente cortos (Guzzetti et al, 2012;Dikau, 2013). Anualmente, los movimientos en masa causan pérdidas millonarias y una gran cantidad de muertes alrededor del mundo, siendo los países en vías de desarrollo las zonas más afectadas globalmente (Alexander, 2005;Kirschbaum et al, 2015;Sepúlveda y Petley, 2015). El impacto en la sociedad, notoriamente negativo, se ha incrementado debido al crecimiento de centros urbanos en zonas altamente susceptibles a la inestabilidad de laderas.…”

Section: Introductionunclassified

“…Investigaciones de campo, digitalización de mapas físicos a formatos vectoriales, interpretación visual y semiautomática de fotografías aéreas e imágenes satelitales, así como análisis de modelos digitales de elevación constituyen los métodos más recurrentes en la preparación de IMM (Van Den Eeckhaut et al, 2005;Guzzetti et al, 2012;Xu, 2015). Registros históricos de crónicas y relatos populares, reportes en medios de comunicación así como publicaciones científicas constituyen valiosa información de entrada para la generación de IMM (Alcántara-Ayala y Murillo-García, 2008;Kirschbaum et al, 2015;Valenzuela et al, 2017). La carencia de una metodología globalmente aceptada para la elaboración de IMM ha llevado al desarrollo de distintos esquemas de documentación dependiendo la finalidad para la cual sea elaborado el IMM (Keefer, 1984;Van Den Eeckhaut y Hervás, 2012;Guzzetti et al, 2012;Kirschbaum et al, 2015;Xu, 2015;CRED 2017).…”

Section: Introductionunclassified

“…Registros históricos de crónicas y relatos populares, reportes en medios de comunicación así como publicaciones científicas constituyen valiosa información de entrada para la generación de IMM (Alcántara-Ayala y Murillo-García, 2008;Kirschbaum et al, 2015;Valenzuela et al, 2017). La carencia de una metodología globalmente aceptada para la elaboración de IMM ha llevado al desarrollo de distintos esquemas de documentación dependiendo la finalidad para la cual sea elaborado el IMM (Keefer, 1984;Van Den Eeckhaut y Hervás, 2012;Guzzetti et al, 2012;Kirschbaum et al, 2015;Xu, 2015;CRED 2017). Esta situación se ve reflejada en México, pese a ser uno de los países líderes en investigación referente a inestabilidades de ladera en América Latina (Sepúlveda y Petley, 2015).…”

Section: Introductionunclassified

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Inventario de movimientos en masa en el sector sur de la Saliente de Monterrey. Caso de estudio: cañón Santa Rosa, Nuevo León, noreste de México

et al. 2017

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Four‐dimensional imaging of moisture dynamics during landslide reactivation

et al. 2017

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Landslides pose significant risks to communities and infrastructure, and mitigating these risks relies on understanding landslide causes and triggering processes. It has been shown that geophysical surveys can significantly contribute to the characterization of unstable slopes. However, hydrological processes can be temporally and spatially heterogeneous, requiring their related properties to be monitored over time. Geoelectrical monitoring can provide temporal and volumetric distributions of electrical resistivity, which are directly related to moisture content. To date, studies demonstrating this capability have been restricted to 2‐D sections, which are insufficient to capture the full degree of spatial heterogeneity. This study is the first to employ 4‐D (i.e., 3‐D time lapse) resistivity imaging on an active landslide, providing long‐term data (3 years) highlighting the evolution of moisture content prior to landslide reactivation and showing its decline post reactivation. Crucially, the time‐lapse inversion methodology employed here incorporates movements of the electrodes on the unstable surface. Although seasonal characteristics dominate the shallow moisture dynamics during the first 2 years with surficial drying in summer and wetting in winter, in the months preceding reactivation, moisture content increased by more than 45% throughout the slope. This is in agreement with independent data showing a significant rise in piezometric heads and shallow soil moisture contents as a result of prolonged and intense rainfall. Based on these results, remediation measures could be designed and early‐warning systems implemented. Thus, resistivity monitoring that can allow for moving electrodes provides a new means for the effective mitigation of landslide risk.

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Spatial and temporal analysis of a global landslide catalog

Cited by 399 publications

References 27 publications

Review of Spatial and Temporal Distribution of Landslides in Tanzania

Review of Spatial and Temporal Distribution of Landslides in Tanzania

Inventario de movimientos en masa en el sector sur de la Saliente de Monterrey. Caso de estudio: cañón Santa Rosa, Nuevo León, noreste de México

Four‐dimensional imaging of moisture dynamics during landslide reactivation

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