Proceedings of the 12th International INQUA meeting on paleoseismology, active tectonic and archaeoseismology

492 1 2 T H I N T E R N AT I O N A L I N Q U A M E E T I N G O N PA L E O S E I S M O L O G Y , A C T I V E T E C T O N I C S A N D A R C H A E O S E I S M O L O G Y ( PATA ) , O C T O B E R 6 T H - 1 1 T H , 2 0 2 4 , L O S A N D E S , C H I L E PATA Days 2024 (1) Facultad de Arquitectura y Ambiente Construido, Universidad de Santiago de Chile (2) Departamento de Ingeniería en Minas, Facultad de Ingeniería. Universidad de Santiago de Chile *Email: pamela.jara@usach.cl K E Y W O R D S landslides, tsunami, alluvial mitigation, analogue models Wassaf, S. (1) Jara, P. (2) * Jiménez, I. (1) Laclabere, S. (1) LANDSLIDE AND TSUNAMI RISKS MITIGATION IN COASTAL URBAN AREAS : A CASE STUDY IN CORONEL (37°S , CHILE) USING ANALOGUE MODELLING I N T R O D U C T I O N Chile, positioned along an Andean-type subduction boundary, is one of the most geologically active regions globally, rendering some of its cities susceptible to natural hazards like earthquakes, tsunamis, volcanic eruptions, landslides, among others. These occurrences often hinge on various triggers, including morphological and meteorological factors, frequently intertwined with Andean tectonics. In response to these challenges, this research endeavours to tackle the specific threat of landslides through analogue modelling, given their significant global impact on natural risk management. Understanding landslides holds great importance in the realm of natural risk management, as it corresponds to one of the major threats in urban areas. Diverse research contributes from various perspectives, aiming to enhance early warning systems by understanding their intrinsic characteristics, by retrospectively identifying initial precursory movements or applying innovative monitoring systems (Zhang et al., 2024; Khan et al., 2021). Previous studies have analysed landslide susceptibility and associated factors, including topographic variables such as slope, distance to drainage, lithology, distance to lineaments, among others. Subsequent research acknowledges that tectonic activity controls large landslides, confirming the crucial role of earthquakes as primary triggers of landslides (eg. Valagussa et al., 2019). In this contribution, from the field of architectural design, the necessity for resilient infrastructure and strategic planning in hazard-prone areas is proposed. Specifically, the design of a mitigation park to counter alluvial hazards, particularly in a coastal hill region. The results of analogue modelling of the slope prone to landslide, along with engineered mechanisms to mitigate mass displacement is analysed.