Magdalena Velázquez-Bucio- PhD in Geography
- Postdoctoral researcher at Centro de Geociencias UNAM
Magdalena Velázquez-Bucio
- PhD in Geography
- Postdoctoral researcher at Centro de Geociencias UNAM
About
16
Publications
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Introduction
My research is focused on the Quaternary, specifically landscape evolution and paleoenvironmental characterization in active tectonically areas by paleoseismological analysis, including stratigraphic and sedimentologic technics, the study of environmental earthquake effects and diatom analysis. The aim is to know the behavior and parameters of active faults, of terrain to seismic events and the generation of hazard maps. The main tools include fieldwork; trenching, core drilling, GIS mapping.
Current institution
Centro de Geociencias UNAM
Current position
- Postdoctoral researcher
Education
August 2012 - June 2018
August 2004 - August 2007
UNIVERSIDAD MICHOACANA DE SAN NICOLAS DE HIDALGO
Field of study
- Geosciences and Territory Planning
Publications
Publications (16)
Dataset on the Environmental Effects of Earthquakes (EEE) triggered by the Irpinia-Basilicata Earthquake of 23 November 1980, Mw 6.9, in Italy.
The entire dataset is available at: https://zenodo.org/records/10277164
Mexico is characterized by a high seismicity, mostly related with the Mexican subduction zone where the Rivera and Cocos plate subducts under the North American plate.
Although some historic destructive earthquakes are of crustal origin, most of the earthquakes with magnitude greater than 7 are located on the subduction and greatly affect the popu...
Earthquake Environmental Effects (EEEs) such as surface faulting, landslides, liquefaction
and tsunamis are widely distributed following strong seismic events and may account for a significant part of the overall damage. Here, we investigate EEEs generated by two
earthquakes with different source parameters, both occurring along the Mexican subduct...
La falla Cerritos pertenece a la porción oeste del Sistema de Fallas Morelia-Acambay, ubicada al suroeste de la ciudad de Morelia, en el estado de Michoacán, México; en una zona con alta densidad de fallas activas con geometrías segmentadas y arreglos en échelon, donde se han desarrollado semi-grabens y grabens de dimensiones variables e inclusive...
We mapped Plio-Pleistocene lake deposits in the Ixtlahuaca paleobasin in Central Mexico, located 51 km south of the Acambay Graben and 69 km west of Mexico City. Within the Acambay basin, Pleistocene to Holocene lake sediments record primary and secondary environmental effects of strong local earthquakes as a consequence of Quaternary activity of t...
The Trans-Mexican Volcanic Belt is an active continental volcanic arc characterized by several arc-parallel Miocene-Holocene tectonic lake basins, such as the Cuitzeo, Zacapu, Chapala, and Zacoalco. Normal faults, and related continental seismicity shape these basins. In the central part of this volcanic arc, the Cuitzeo Lake basin presents neotect...
The La Alberca-Teremendo fault is a 26 km-long, complex fault composed of an en échelon array of short crustal fault segments, belonging to the Morelia-Acambay fault system. This fault system shows parallel scarps with morphological evidence of recent activity such as drainage alteration, maximum throws of 50 m and minimum throws of 1.4 m that disp...
The September 8, 2017, Mw 8.2 earthquake with epicenter in the Gulf of Tehuantepec offshore, 133 km Southwest of Pijijiapan, Oaxaca, Mexico, generated considerable environmental effects in a vast region including central-southern Mexico and Guatemala. Immediately after the event, we carried out field reconnaissance surveys of the geological phenome...
We report detailed rock-magnetic and paleomagnetic results from a 27-m-long sedimentary core collected at depocenter of Lake Chapala, western Trans-Mexican Volcanic Belt. Rock-magnetic parameters point to PSD grain-size titanomagnetites as the dominant magnetic mineralogy. Observed variations, in both concentration and grain-size dependent magnetic...
Soft-sediment deformation structures identified in lacustrine sediments of the San Pedro el Alto area, within the Acambay graben, Mexico, can be attributed to Pleistocene-Holocene seismic events. The analysis of these deformation structures, seismites, is a key tool for the characterization of parameters such as the intensity and magnitude of the e...
Un terremoto de intraplaca de Mw 8.2 sacudió intensamente los estados de Chiapas y Oaxaca, el 7 de septiembre 2017 a las 23h49 (distancia hipocentral 58 Km). Efectos cosismicos fueron ampliamente observados en un área de 18.000 Km2, como run-up tsunamis hasta 3.4m, subsidencia del terreno en el orden de los 0.5 m, lateral spreading y grietas en sue...
A Mw 8.2 intraslab earthquake hit the whole Chiapas region and the southern part of the Oaxaca state in Mexico, on September 7, 2017 at 23h49 PM local time (nucleation depth 58 km). The rupture length of this mainshock was of 200-220 km, corresponding to the coastal sector from Salina Cruz to the Pijijiapan village. The focal mechanism obtained by...
The study area is located in central Mexico, in the Trans-Mexican Volcanic Belt (TMVB) one of the areas with highest geological activity. The structural framework that controls the kinematics of the studied area is linked to the Acambay graben, characterized by structures mainly oriented E-W, where the November 19, 1912, Ms 6.9 earthquake took plac...
