EGU2020-12204, updated on 14 Jun 2023
https://doi.org/10.5194/egusphere-egu2020-12204
EGU General Assembly 2020
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Trigger atmospheric conditions for RIL in the Southern Andes.

Nataly Manque Roa1, Ivo Fustos-Toribio2, and Marcelo Somos-Valenzuela3,4
Nataly Manque Roa et al.
  • 1Undergraduate program in Civil Engineering, University of La Frontera, Temuco,4780000, Chile
  • 2Civil Engineering Department, University of La Frontera, Temuco, 4780000, Chile
  • 3Butamallin Research Center for Global Change, Universidad de La Frontera, Temuco, 4780000, Chile
  • 4Agricultural and Forestry Sciences Faculty, Universidad de La Frontera, Temuco, 4780000 Chile

Rainfall-Induced Landslides (RIL) are one of the most important natural hazards due to their damage to populated areas, critical infrastructure, and roads. Therefore, their deep understanding is critical for decision-makers. The Southern Andes (~ 41.1ºS, 72.5ºW) has undergone recurring RIL processes in recent years, which have affected interurban connectivity with strong social impacts. The objective of this study is to understand the atmospheric conditions that could trigger RIL at the Southern Andes. We propose a correction of high-resolution atmospheric simulations based on the Weather and Research Forecast (WRF) model. Our results were corrected by meteorological in-situ stations using geostatistical techniques. We identify precursor signals at different pressure heights that could be used to the future in an early warning system. Our proposed methodology will support the generation of public policies in the context of climate change scenarios in catchments with low-dense instrumentation and low uncertainty. Hence, our database will provide new hydrometeorological perspectives in RIL studies. To the future, these results will allow the development of an early warning system applicable in the central-southern zone of Chile.

How to cite: Manque Roa, N., Fustos-Toribio, I., and Somos-Valenzuela, M.: Trigger atmospheric conditions for RIL in the Southern Andes., EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-12204, https://doi.org/10.5194/egusphere-egu2020-12204, 2020.