Risk assessment of land subsidence and associated faulting in Mexico City using InSAR
Por:
Antonio Fernandez-Torres, Enrique, Cabral-Cano, Enrique, Alberto Novelo-Casanova, David, Solano-Rojas, Dario, Havazli, Emre, Salazar-Tlaczani, Luis
Publicada:
1 may 2022
Resumen:
Land subsidence and associated faulting have affected Mexico City
(CDMX), Mexico, for more than 100 years. However, despite the extensive
research on land subsidence in CDMX, very few investigations focus on
characterizing its socioeconomic risk due to land subsidence. In this
article, we present Mexico City's socioeconomic risk map due to land
subsidence and associated faulting, combining our data from a land
subsidence characterization based on InSAR processing with a
socioeconomic vulnerability assessment. Our results show two high
subsidence velocity areas. The largest area is located in the northeast
sector of CDMX and the neighboring State of Mexico suburbs, where the
maximum subsidence rate reaches up to 423 mm/year. We also found that
40.4% of the total cumulative length of land subsidence-associated
faults correspond to high 15.6% and very high 24.8% classes of
subsidence horizontal gradient. Our results demonstrate a spatial
correlation between areas of high subsidence rate and horizontal
gradient with high and very high socioeconomic vulnerability zones.
Under this scenario, 9% of the urbanized areas, about 70.7 km(2), are
exposed to high and very high land subsidence socioeconomic risk where
approximately 12.6% of the CDMX population lives.
Filiaciones:
Antonio Fernandez-Torres, Enrique:
Univ Nacl Autonoma Mexico, Posgrad Ciencias La Tierra, Ciudad Univ, Coyoacan Cdmx 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Geofis, Dept Geomagnetismo & Explorac, Ciudad Univ, Coyoacan Cdmx 04510, Mexico
Cabral-Cano, Enrique:
Univ Nacl Autonoma Mexico, Inst Geofis, Dept Geomagnetismo & Explorac, Ciudad Univ, Coyoacan Cdmx 04510, Mexico
Alberto Novelo-Casanova, David:
Univ Nacl Autonoma Mexico, Inst Geofis, Dept Sismol, Ciudad Univ, Coyoacan Cdmx 04510, Mexico
Solano-Rojas, Dario:
Univ Nacl Autonoma Mexico, Fac Ingn, Div Ingn Ciencias La Tierra, Ciudad Univ, Coyoacan Cdmx 04510, Mexico
Havazli, Emre:
CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
Salazar-Tlaczani, Luis:
Univ Nacl Autonoma Mexico, Inst Geofis, Dept Geomagnetismo & Explorac, Ciudad Univ, Coyoacan Cdmx 04510, Mexico
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