Press archives as temporal records of landslides in the North of Spain: relationships between rainfall and instability slope events

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

“…Existing estimations for the Asturias region (NW Spain) report 66 million euros per year as being the direct total cost of landslides (González Moradas and Lima de Montes, 2001). Despite the high landslide susceptibility of the area, only two regional landslide databases have been developed (Domínguez-Cuesta et al, 1999;San Millán Revuelta, 2015). Particularly notable is the landslide database developed in Asturias by using press archives of the regional newspapers, which allowed the first rainfall threshold for the occurrence of landslides in the Asturian region to be calculated (Domínguez-Cuesta et al, 1999;Francos Garrote, 2011;Domínguez-Cuesta et al, 2012).…”

Geomorphological map of an Atlantic mid-height mountain area: the Juan Robre and Jana Ridge (Cantabrian Range, Northwest Spain)

“…Landslides are found in the quartzite interfluves on the ridge's northern side, which is characterized by significant arenization of rocks in situ, a dense network of fractures and deep surface formations which cover the slopes. All this in combination with the steep gradient propitiates the occurrence of rapid mass movements during intense rainfall events (Jiménez-Sanchez et al, 1999;Domínguez-Cuesta et al, 1999;2007;Ruiz-Fernández et al, 2008) ( Figure 8B). …”

“…They are strongly dependent on the characteristics of the rocky substrate (Jiménez-Sanchez et al, 1999;Domínguez-Cuesta et al, 1999;Robustelli et al, 2009). Landslides are found in the quartzite interfluves on the ridge's northern side, which is characterized by significant arenization of rocks in situ, a dense network of fractures and deep surface formations which cover the slopes.…”

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

“…The first limitation is the reduced number of landslide events (36) analysed in the current work, which hampers the achievement of general results. The BAPA database is only complete and accurate enough during the last eight hydrological years of the covered span, limiting the number of available case studies.…”

“…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 out the abundant rainfall, and the consequent high soil moisture levels sustained during long periods, as the main trigger for the study area [36]. On this basis, regional and local rainfall thresholds for the landslide occurrence have been calculated [12,37,38].…”