Risk Factors and Perceived Restoration in a Town Destroyed by the 2010 Chile Tsunami
Other literature type, Article
- Publisher: Copernicus Publications
(issn: 1684-9981, eissn: 1684-9981)
G | GE1-350 | Geography. Anthropology. Recreation | QE1-996.5 | Environmental technology. Sanitary engineering | Environmental sciences | Geology | TD1-1066
A large earthquake and tsunami took place in February 2010,
affecting a significant part of the Chilean coast (Maule earthquake, <i>M</i><sub>w</sub> of 8.8).
Dichato (37° S), a small town located on Coliumo Bay, was one
of the most devastated coastal areas and is currently under reconstruction.
Therefore, the objective of this research is to analyze the risk factors that
explain the disaster in 2010, as well as perceived restoration 6 years
after the event. Numerical modeling of the 2010 Chile tsunami with four
nested grids was applied to estimate the hazard. Physical, socioeconomic and
educational dimensions of vulnerability were analyzed for pre- and
post-disaster conditions. A perceived restoration study was performed to
assess the effects of reconstruction on the community. It was focused on
exploring the capacity of newly reconstructed neighborhoods to provide
restorative experiences in case of disaster. The study was undertaken using
the perceived restorativeness scale.
The vulnerability variables that best explained the extent of the disaster
were housing conditions, low household incomes and limited knowledge about
tsunami events, which conditioned inadequate reactions to the emergency.
These variables still constitute the same risks as a result of the
reconstruction process, establishing that the occurrence of a similar event
would result in a similar degree of devastation. For post-earthquake
conditions, it was determined that all neighborhoods have the potential to
be restorative environments soon after a tsunami. However, some
neighborhoods are still located in areas devastated by the 2010 tsunami and
again present high vulnerability to future tsunamis.