A spatio-temporal landslide inventory for the NW of Spain: BAPA database

Rainfall and weather conditions inducing intense landslide activity in northern Spain (Deba, Guipúzcoa)

“…According to Corominas (2006), failures in northern Spain are more frequent during winter and spring. In the same way, Valenzuela et al (2017b), on the basis of data covering a 35-year period, found that in Asturias landslide distribution shows a positive correlation with monthly rainfall, occurring mostly from October to April. In Vizcaya, a province bordering Deba, most of the landslides produced between 2002 and 2010, took place in autumn and winter (Díaz et al, 2012).…”

Meteorological Patterns Linked to Landslide Triggering in Asturias (NW Spain): A Preliminary Analysis

“…Although landslides recorded in Asturias normally show reduced size and depth (metric to decametric), they often affect highly populated areas or the dense infrastructure network, causing every year relevant economic loses and sporadic human victims [34]. The BAPA (Base de datos de Argayos del Principado de Asturias-Principality of Asturias Landslide Database) gathers 2245 individual landslides recorded during the period 1980-2016 [35], showing the high incidence of those phenomena in the study area. The comparison between landslide and climatic data series has pointed From a geological point of view, the bedrock in the study area consists of a strongly folded and fractured Permian and Paleozoic basement [27,28] covered in the centre and north-eastern areas by a discordant Tertiary cover [29].…”

“…Data about instability events analysed in the present work comes from the BAPA landslide database, previously built and analysed by Valenzuela and other authors [35]. The BAPA, which covers a 37-year period, is the only landslide database developed in Asturias and the sole source that may provide the date of occurrence of the landslides, crucial to address the present research.…”

“…These authors have assessed the level of completeness of the inventory, which shows a general increase in the number of records from 1980 to present. Furthermore, the landslide records have been previously classified in three categories according to the reliability of its temporal occurrence: (1) exact date; (2) inferred date, with an uncertainty of 2-5 days; and (3) estimated date, with and uncertainty of a week or more [35]. Based on the parameters set in previous works, the study interval has been defined considering a period within the BAPA database time characterized by (i) a high level of completeness of the data series and (ii) a significant number of instability events showing a high temporal accuracy.…”

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

“…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).…”