Cambios en el relieve generados como consecuencia del terremoto Mw = 8,8 del 27 de febrero de 2010 en el centro-sur de Chile

Abstract

On February 27th 2010 a Mw=8,8 earthquake occurred in south-center Chile that caused coseismic uplift and subsidence. The littoral zone of the Biobío Region was uplifted causing widening of the beaches, the emersion of the marine abrasion platform, drying of rivers and wetlands and intertidal biota death. The coast between Valparaíso and O'Higgins regions experienced subsidence that caused reduction of the width of the beaches, deepening of rivers, submergence of coastal bars, vegetation flooding and drying. The tsunami drags coastal sands and vegetation into the interior. The coastal sands became with low compaction, were reworked in 2010 and 2011 due to the storm waves, widen beaches, reconstructing what had decreased by coseismic subsidence, as well as the coastal bars