@misc{10481/55412,
year = {2018},
month = {6},
url = {http://hdl.handle.net/10481/55412},
abstract = {It has long been recognized that earthquakes change the stress in the upper crust around
the fault rupture and can influence the behaviour of neighbouring faults and volcanoes. Rapid
estimates of these stress changes can provide the authorities managing the post-disaster situation
with valuable data to identify and monitor potential threads and to update the estimates of seismic
and volcanic hazard in a region. Here we propose a methodology to evaluate the potential
influence of an earthquake on nearby faults and volcanoes and create easy-to-understand maps
for decision-making support after large earthquakes. We apply this methodology to the Mw 7.8,
2016 Ecuador earthquake. Using Sentinel-1 Interferometric Synthetic Aperture Radar (InSAR) and
continuous GPS data, we measure the coseismic ground deformation and estimate the distribution
of slip over the fault rupture. We also build an alternative source model using the Global Centroid
Moment Tensor (CMT) solution. Then we use these models to evaluate changes of static stress
on the surrounding faults and volcanoes and produce maps of potentially activated faults and
volcanoes. We found, in general, good agreement between our maps and the seismic and volcanic
events that occurred after the Pedernales earthquake. We discuss the potential and limitations of
the methodology.},
organization = {This work is supported by the European Commission, Directorate-General Humanitarian
Aid and Civil Protection (ECHO) under the SAFETY (Sentinel for Geohazards regional monitoring and forecasting)
project (ECHO/SUB/2015/718679/Prev02) and by the Spanish Ministry of Economy and Competitiveness under
INTERGEOSIMA (CGL2013-47412) and ACTIVESTEP (CGL2017-83931-C3), QUAKESTEP (1-P) + 3GEO(2-P)
+ GEOACTIVA (3-P) projects.},
publisher = {MDPI},
keywords = {InSAR},
keywords = {Sentinel-1},
keywords = {GPS},
keywords = {Ecuador earthquake},
keywords = {Stress changes},
keywords = {Active faults},
keywords = {Volcanoes},
keywords = {Decision-making},
title = {InSAR-Based Mapping to Support Decision-Making after an Earthquake},
author = {Béjar-Pizarro, Marta and Álvarez Gómez, José A. and Staller, Alejandra and Luna, Marco P. and Pérez-López, Raúl and Monserrat, Oriol and Chunga, Kervin and Lima, Aracely and Galve Arnedo, Jorge Pedro and Martínez Díaz, José J. and Mateos, Rosa María and Herrera, Gerardo},
}