Preprints
https://doi.org/10.5194/nhess-2019-416
https://doi.org/10.5194/nhess-2019-416
21 Feb 2020
 | 21 Feb 2020
Status: this preprint has been withdrawn by the authors.

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

Victoria Rivas, Juan Remondo, Jaime Bonachea, and Javier Sánchez-Espeso

Abstract. The Deba area is intensely affected by frequent shallow landslides triggered by rainfall. Relationships between rainfall and landslides in northern Spain, particularly for rainfall events driving multiple movements simultaneously, have not been explored in depth so far. This contribution explores the role of rainfall in landslide activity during a quite long time span, (60 years), from a large network of rainfall gauges and a complete inventory of landslides, and utilizing three different strategies of analysis. 1,180 landslides have been inventoried, and 3,241 rainfall episodes automatically recognized and characterized in terms of rainfall amount, duration and intensity. Antecedent rainfall has also been considered. Six episodes of intense rainfall, which have produced multiple landslides (> 50 % of the recent past occurrences) have been identified. The analysis provides different results: the extraordinary character of the triggering rainfall has been assessed, the meteorological conditions associated to those extreme episodes have been recognized and empirical rainfall threshold producing multiple landslides has been found (I = 7.7D-0.428) and compared with others described in literature. Results show that multiple landslide occurrences are triggered by extreme convective rainfall, intense, short and with limited horizontal extent, as well as a marked summer-autumn seasonality, characteristic of Mediterranean climate.

This preprint has been withdrawn.

Victoria Rivas, Juan Remondo, Jaime Bonachea, and Javier Sánchez-Espeso

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Victoria Rivas, Juan Remondo, Jaime Bonachea, and Javier Sánchez-Espeso
Victoria Rivas, Juan Remondo, Jaime Bonachea, and Javier Sánchez-Espeso

Viewed

Total article views: 829 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
558 240 31 829 35 32
  • HTML: 558
  • PDF: 240
  • XML: 31
  • Total: 829
  • BibTeX: 35
  • EndNote: 32
Views and downloads (calculated since 21 Feb 2020)
Cumulative views and downloads (calculated since 21 Feb 2020)

Viewed (geographical distribution)

Total article views: 709 (including HTML, PDF, and XML) Thereof 705 with geography defined and 4 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 24 Feb 2024
Download

This preprint has been withdrawn.

Short summary
This work is focused on the analysis of relationships between landslides and precipitations covering the last 60 years. Landslide inventory has been elaborated and a rainfall database has been obtained from 15 rain gauges. In this period, 6 major landsliding events have been identified and a characterization of them has been carried out. An I-D threshold has been calculated and compared. The characterization of weather patterns, and the definition of their seasonality, is a relevant contribution
Altmetrics