dor_id: 4102199

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650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

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336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

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856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/2062/1679

100.1.#.a: Lira, Jorge; Nuñez, Marisol

524.#.#.a: Lira, Jorge, et al. (2019). Subsidence and Morphologic Variations in Mexico City Generated by the Earthquakes of September 2017. Geofísica Internacional; Vol. 58 No. 3, 2019; 211-227. Recuperado de https://repositorio.unam.mx/contenidos/4102199

245.1.0.a: Subsidence and Morphologic Variations in Mexico City Generated by the Earthquakes of September 2017

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2019

264.#.1.c: 2019-07-01

653.#.#.a: interferometry; subsidence; synergism; texture; Mexico City; interferometría; subsidencia; sinergismo; México

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, fecha de asignación de la licencia 2019-07-01, para un uso diferente consultar al responsable jurídico del repositorio por medio de revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/2062

001.#.#.#: oai:ojs.ojs.geofisica.unam.mx:article/2062

041.#.7.h: eng

520.3.#.a: Two earthquakes that occurred in southwest Mexico generated subsidence and morphologic changes in the area of Mexico City. To study the subsidence, an interferometric procedure was carried out using four interferometric pairs acquired from the radar satellite Sentinel-1 in IW (Interferometric Wide Swath) TOPS (Terrain Observation by Progressive Scan) SLC (Single Look Complex) mode. Four interferograms and four displacement maps were generated. To quantify the morphologic changes, a synergism of the Sentinel-1 radar bands in IW GRD (Ground Range Detected) mode and the SPOT 6/7 optical bands was considered. The synergism consists of a hybrid image formed by the radar bands and the optical bands. Principal component analysis was applied to the bands of the hybrid image. The first three components were retained, and a divergence operator was then applied to the vector field formed by these components, producing a texture map. The texture map was evaluated in conjunction with the interferogram and displacement map for the September 2017 earthquakes. Results indicated a complex pattern of subsidence and morphologic changes. The interferogram and subsidence of September 2017 correlated with a map of earthquake damages.

773.1.#.t: Geofísica Internacional; Vol. 58 No. 3 (2019); 211-227

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

046.#.#.j: 2020-10-20 00:00:00.000000

022.#.#.a: 0016-7169

310.#.#.a: Trimestral

264.#.1.b: Instituto de Geofísica, UNAM

758.#.#.1: http://revistagi.geofisica.unam.mx/index.php/RGI

handle: 00d706f9cb7eb7bb

harvesting_date: 2020-09-23 00:00:00.0

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file_modification_date: 2020-08-13 16:17:45.0

last_modified: 2020-10-21 00:00:00

license_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es

license_type: by-nc-nd

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Artículo

Subsidence and Morphologic Variations in Mexico City Generated by the Earthquakes of September 2017

Lira, Jorge; Nuñez, Marisol

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Lira, Jorge, et al. (2019). Subsidence and Morphologic Variations in Mexico City Generated by the Earthquakes of September 2017. Geofísica Internacional; Vol. 58 No. 3, 2019; 211-227. Recuperado de https://repositorio.unam.mx/contenidos/4102199

Descripción del recurso

Autor(es)
Lira, Jorge; Nuñez, Marisol
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Subsidence and Morphologic Variations in Mexico City Generated by the Earthquakes of September 2017
Fecha
2019-07-01
Resumen
Two earthquakes that occurred in southwest Mexico generated subsidence and morphologic changes in the area of Mexico City. To study the subsidence, an interferometric procedure was carried out using four interferometric pairs acquired from the radar satellite Sentinel-1 in IW (Interferometric Wide Swath) TOPS (Terrain Observation by Progressive Scan) SLC (Single Look Complex) mode. Four interferograms and four displacement maps were generated. To quantify the morphologic changes, a synergism of the Sentinel-1 radar bands in IW GRD (Ground Range Detected) mode and the SPOT 6/7 optical bands was considered. The synergism consists of a hybrid image formed by the radar bands and the optical bands. Principal component analysis was applied to the bands of the hybrid image. The first three components were retained, and a divergence operator was then applied to the vector field formed by these components, producing a texture map. The texture map was evaluated in conjunction with the interferogram and displacement map for the September 2017 earthquakes. Results indicated a complex pattern of subsidence and morphologic changes. The interferogram and subsidence of September 2017 correlated with a map of earthquake damages.
Tema
interferometry; subsidence; synergism; texture; Mexico City; interferometría; subsidencia; sinergismo; México
Idioma
eng
ISSN
0016-7169

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