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

C O N C L U S I O N S Our preliminary results show that the combination and linking of inland and coastal sedimentary records in lakes allows the correlation between paleo- earthquake event deposits. In that way, a better understanding of tsunami and earthquake history and their imprints on our studied lakes. In addition, a first overview of long sediment cores, makes us expect to have access to the last ~7.5 kyrs of paleo-earthquakes in the area, an invaluable contribution to local models for assessing the risk associated with this highly seismic region. A C K N O W L E D G E M E N T S This research is funded by the Austrian Science Fund (FWF) project P34504. We thank the FONDEQUIP Project EQM210133-ANID and Antonio Maldonado for use of their UWITEC coring platform. To A. Abarzúa and K. Moreno for their essential help in logistics. We are grateful to S. Bertrand for his support to obtain the CTD data. To K. De Rycker, A. Peña, O. Fuentes, P. Arredondo, M. Almonacid, D. Martínez and F. Jaure for their help during both fieldtrips. To S. Benischke and M, Ortler for their support and guide during the laboratory work. R E F E R E N C E S Cisternas, M., Atwater, B.F., Torrejon, F., Sawai, Y., Machuca, G., Lagos, M., Eipert, A., Youlton, C., Salgado, I., Kamataki, T., Shishikura, M., Rajendran, C.P., Malik, J.K., Rizal, Y., & Husni, M. (2005). Predecessors of the giant 1960 Chile earthquake. Nature 437, 404-407. Fontijn, K., Lachowycz, S.M., Rawson, H., Pyle, D.M., Mather, T.A., Naranjo, J.A., & Moreno- Roa, H. (2014). Late Quaternary tephrostratigraphy of southern Chile and Argentina. Quaternary Science Reviews 89, 70-84. Fontijn, K., Rawson, H., Van Daele, M., Moernaut, J., Abarzúa, A.M., Heirman, K., Bertrand, S., Pyle, D.M., Mather, T.A., De Batist, M., Naranjo, J.-A., & Moreno, H. (2016). Synchronisation of sedimentary records using tephra: A postglacial tephrochronological model for the Chilean Lake District. Quaternary Science Reviews 137, 234-254. Kempf, P., Moernaut, J., Van Daele, M., Vermassen, F., Vandoorne, W., Pino, M., Urrutia, R., Schmidt, S., Garret, E., & De Batist, M. (2015). The sedimentary record of the 1960 tsunami in two coastal lakes on Isla de Chiloé, south central Chile. Sedimentary Geology 328, 73-86. Kempf, P., Moernaut, J., Van Daele, M., Vandoorne, W., Pino, M., Urrutia, R., & De Batist, M. (2017). Coastal lake sediments reveal 5500 years of tsunami history in south central Chile. Quaternary Science Reviews 161, 99-116. Kempf, P., Moernaut, J., Van Daele, M., Pino, M., Urrutia, R., & De Batist, M. (2020). Paleotsunami record of the past 4300 years in the complex coastal lake system of Lake Cucao, Chiloé Island, south central Chile. Sedimentary Geology 401, 105644. Molina, D., Tassara, A., Abarca, R., Melnick, D., & Madella, A. (2021). Frictional segmentation of the Chilean megathrust from a multivariate analysis of geophysical, geological, and geodetic data. Journal of Geophysical Research: Solid Earth 126, e2020JB020647. Moernaut, J., Van Daele, M., Fontijn, K., Heirman, K., Kempf, P., Pino, M., Valdebenito, G., Urrutia, R., Strasser, M., & De Batist, M. (2018). Larger earthquakes recur more periodically: New insights in the megathrust earthquake cycle from lacustrine turbidite records in south-central Chile. Earth and Planetary Science Letters 481, 9-19. Villalobos, L., Parra, O., Grandjean, M., Jaque, E., Woef l, S., & Campos, H. (2003). A study of the river basins and limnology of five humic lakes in Chiloé Island. Revista chilena de historia natural 76(4), 563-590. Wils, K., Van Daele, M., Kissel, C., Moernaut, J., Schmidt, S., Siani, G., & Lastras, G. (2020). Seismo-turbidites in Aysén Fjord (southern Chile) reveal a complex pattern of rupture modes along the 1960 megathrust earthquake segment. Journal of Geophysical Research: Solid Earth 125, e2020JB.