Geoelectrical and Electromagnetic Methods Applied to Paleolimnological Studies: Two Examples from Desiccated Lakes in the Basin of Mexico
Por:
Buecker, Matthias, Lozano Garcia, Socorro, Ortega Guerrero, Beatriz, Caballero, Margarita, Perez, Liseth, Caballero, Lizeth, Pita de la Paz, Carlos, Sanchez-Galindo, Alfredo, Jesus Villegas, Francisco, Orozco, Adrian Flores, Brown, Erik, Werne, Josef, Valero Garces, Blas, Schwalb, Antje, Kemna, Andreas, Sanchez-Alvaro, Edgar, Launizar-Martinez, Norberto, Valverde-Placencia, Antonio, Garay-Jimenez, Fernando
Publicada:
1 ene 2017
Categoría:
Earth and planetary sciences (miscellaneous)
Resumen:
Paleolimnological studies require a broad understanding of the geometry
and depth of the sedimentary fill of lake basins prior to coring
campaigns. Seismic methods are routinely employed for the indirect
characterization of lake-bottom sediments. However, the use of seismic
methods might occasionally be limited due to surface conditions or poor
seismic contrasts between the stratigraphic units, which lead to data
quality that is too poor to provide sufficient information for the
selection of drill sites. Sources of cultural noise are one of the main
reasons why seismic methods fail in study areas near or within large
cities, such as Mexico City. Under certain conditions, electrical and
electromagnetic methods might be a suitable substitute or complement to
seismic exploration, as they respond to different physical properties of
the subsurface. To evaluate the applicability of such methods, here we
present two recent case studies from the desiccated lakes Chalco and
Xochimilco both located in urban areas within the Basin of Mexico where
electrical resistivity tomography (ERT), transient electromagnetic (TEM)
and magnetotelluric (MT) soundings were conducted for the
characterization of lake basement and lacustrine sediments. In both
examples, the results of the geophysical exploration contributed
valuable stratigraphic information for the following drilling and core
recovery, which highlights the potential of electrical and
electromagnetic methods in paleolimnological studies.
Filiaciones:
Buecker, Matthias:
Univ Bonn, Steinmann Inst, Fachbereich Geophys, Meckenheimer Allee 176, D-53115 Bonn, Germany
TU Wien, Forschungsgrp Geophys, Dept Geodasie & Geoinformat, Gusshausstr 25-29, A-1040 Vienna, Austria
Lozano Garcia, Socorro:
Univ Nacl Autonoma Mexico, Inst Geol, Ciudad Univ, Ciudad De Mexico 04510, DF, Mexico
Ortega Guerrero, Beatriz:
Univ Nacl Autonoma Mexico, Inst Geol, Ciudad Univ, Ciudad De Mexico 04510, DF, Mexico
Univ Nacl Autonoma Mexico, Inst Geofis, Ciudad Univ, Ciudad De Mexico 04510, DF, Mexico
Caballero, Margarita:
Univ Nacl Autonoma Mexico, Inst Geofis, Ciudad Univ, Ciudad De Mexico 04510, DF, Mexico
Perez, Liseth:
Univ Nacl Autonoma Mexico, Inst Geol, Ciudad Univ, Ciudad De Mexico 04510, DF, Mexico
Caballero, Lizeth:
Univ Nacl Autonoma Mexico, Dept Fis, Fac Ciencias, Ciudad Univ, Ciudad De Mexico 04510, DF, Mexico
Pita de la Paz, Carlos:
Geotem Ingn SA CV, Alheli Mz 7 Lt 13-A, Ciudad De Mexico 14640, Mexico
Sanchez-Galindo, Alfredo:
Geotem Ingn SA CV, Alheli Mz 7 Lt 13-A, Ciudad De Mexico 14640, Mexico
Jesus Villegas, Francisco:
Geotem Ingn SA CV, Alheli Mz 7 Lt 13-A, Ciudad De Mexico 14640, Mexico
Orozco, Adrian Flores:
TU Wien, Forschungsgrp Geophys, Dept Geodasie & Geoinformat, Gusshausstr 25-29, A-1040 Vienna, Austria
Brown, Erik:
Univ Minnesota, Large Lakes Observ, 2205 E 5th St,Res Lab Bldg 207, Duluth, MN 55812 USA
Univ Minnesota, Dept Earth & Environm Sci, 2205 E 5th St,Res Lab Bldg 207, Duluth, MN 55812 USA
Werne, Josef:
Univ Pittsburgh, Dept Geol & Environm Sci, 505 SRCC,4107 OHara St, Pittsburgh, PA 15260 USA
Valero Garces, Blas:
CSIC, Inst Pirenaico Ecol, Avda Montanana 1005, Zaragoza 50059, Spain
Schwalb, Antje:
Tech Univ Carolo Wilhelmina Braunschweig, Inst Geosyst & Bioindikat, Langer Kamp 19c, D-38106 Braunschweig, Germany
Kemna, Andreas:
Univ Bonn, Steinmann Inst, Fachbereich Geophys, Meckenheimer Allee 176, D-53115 Bonn, Germany
Sanchez-Alvaro, Edgar:
Comis Fed Elect, Dept Sismotecton & Explorac Geofis, Gerencia Estudios Ingn Civil, Augusto Rodin 265, Ciudad De Mexico 03820, Mexico
Launizar-Martinez, Norberto:
Comis Fed Elect, Dept Sismotecton & Explorac Geofis, Gerencia Estudios Ingn Civil, Augusto Rodin 265, Ciudad De Mexico 03820, Mexico
Valverde-Placencia, Antonio:
Comis Fed Elect, Dept Sismotecton & Explorac Geofis, Gerencia Estudios Ingn Civil, Augusto Rodin 265, Ciudad De Mexico 03820, Mexico
Garay-Jimenez, Fernando:
Comis Fed Elect, Dept Sismotecton & Explorac Geofis, Gerencia Estudios Ingn Civil, Augusto Rodin 265, Ciudad De Mexico 03820, Mexico
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