Geoelectrical and Electromagnetic Methods Applied to Paleolimnological Studies: Two Examples from Desiccated Lakes in the Basin of Mexico
| العنوان: | Geoelectrical and Electromagnetic Methods Applied to Paleolimnological Studies: Two Examples from Desiccated Lakes in the Basin of Mexico |
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| المؤلفون: | Bücker, M., García, S. L., Guerrero, B. O., Caballero, M., Pérez, L., Caballero, L., La Paz, C. P., Sánchez-Galindo, A., Villegas, F. J., Orozco, A. F., Brown, E., Josef Werne, Garcés, B. V., Schwalb, A., Kemna, A., Sánchez-Alvaro, E., Launizar-Martínez, N., Valverde-Placencia, A., Garay-Jiménez, F. |
| المصدر: | Universidad Nacional Autónoma de México UNAM Redalyc-UNAM Boletín de la Sociedad Geológica Mexicana (México) Num.2 Vol.69 Zaguán. Repositorio Digital de la Universidad de Zaragoza instname Scopus-Elsevier |
| بيانات النشر: | Sociedad Geológica Mexicana, A.C., 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | electromagneticmethods, Geophysics, paleolimnology, Ciencias de la Tierra, Mexico, lacustrine sediments |
| الوصف: | "Paleolimnological studies require a broad un - derstanding of the geometry and depth of the sedimentary fill of lake basins prior to coring campaigns. Seismic methods are routinelyemployed for the indirect characterization oflake-bottom sediments. However, the use ofseismic methods might occasionally be limit - ed 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 selec - tion 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 condi - tions, electrical and electromagnetic methods might be a suitable substitute or complement to seismic exploration, as they respond to dif - ferent 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 conduct - ed for the characterization of lake basement and lacustrine sediments. In both examples, the results of the geophysical exploration con - tributed valuable stratigraphic information for the following drilling and core recovery, which highlights the potential of electrical and elec - tromagnetic methods in paleolimnologicalstudies." |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::16ca3afc2af5f95895f8acac9bb52b14 https://www.redalyc.org/articulo.oa?id=94352452001 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.dedup.wf.001..16ca3afc2af5f95895f8acac9bb52b14 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |