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Memorias de investigación
Communications at congresses:
Evaluación de la Peligrosidad de Deslizamientos de laderas empleando Técnicas de Regresión Logística- Hazard Assessment of earthquake-triggered landslides using logistic regression tecniques
Year:2008
Research Areas
  • Geophysics
Information
Abstract
In this paper, a hazard assessment of earthquake-triggered landslides model is applied to a local-scale area using logistic regression techniques. The probability of landslide occurrence is considered as dependent variable, which is modelized by a sigmoid function (taking values between 0 and 1), and the independent variables are the factors related to the susceptibility of the terrain. The methodology is implemented in a Geographical Information System (GIS), where the different susceptibility factors (elevation, slope, aspect, mean annual precipitation, lithology, land uses and roughness terrain) are stored, together with an inventory of landslides in order to calibrate the model in a subsequent phase. An application is developed in a 10x6 km area at Santa Tecla (El Salvador) , modelling the scenario of 13th January 2001 with the necessary information to define the susceptibility as well as the triggering function: digital cartography 1:25.000, geological maps, rainfall database and strong-motion records of the 2001 earthquake. Results show the variables that more influence susceptibility and a hazard map which is contrasted with the landslides inventory. Finally, a high concordance between the landslides inventory and high-hazard areas is observed.
International
Si
Congress
6ª Asemblea Hispano Portuguesa de Geodesia y Geofisica
960
Place
Tomar (Portugal)
Reviewers
Si
ISBN/ISSN
9999-99-999-9
Start Date
11/02/2008
End Date
14/02/2008
From page
225
To page
226
Resumenes
Participants
  • Participante: María José García Rodríguez (UPM)
  • Autor: Maria Belen Benito Oterino (UPM)
  • Participante: Carmen Morillo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería Sísmica: Dinámica de Suelos y Estructuras
  • Departamento: Ingeniería Topográfica y Cartografía
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