dor_id: 4133443

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

561.#.#.u: https://www.geofisica.unam.mx/

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

336.#.#.b: article

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

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/942/911

100.1.#.a: Caballero, Margarita; Vilaclara, Gloria; Rodríguez, Alejandro; Juárez, Diana

524.#.#.a: Caballero, Margarita, et al. (2003). Short-term climatic change in lake sediments from lake Alchichica, Oriental, Mexico. Geofísica Internacional; Vol. 42 Núm. 3: Julio 1, 2003; 529-537. Recuperado de https://repositorio.unam.mx/contenidos/4133443

245.1.0.a: Short-term climatic change in lake sediments from lake Alchichica, Oriental, Mexico

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2003

264.#.1.c: 2003-07-01

653.#.#.a: Lagos cráter; diatomeas; Cuenca de Oriental; Maar lakes; diatoms; Oriental Basin

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-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/942

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/942

041.#.7.h: spa

520.3.#.a: Reduced precipitation in central Mexico is related to ENSO events. These short-term climatic fluctuations can modify mixing-stratification patterns of lake systems, reflected in the sediments deposited at the bottom year after year. Lake sediments can also record longer climatic trends. We present preliminary results of an evaluation of the potential of Lake Alchichica to record short-term fluctuations as well as middle-term climatic variability. Diatom, loss on ignition (LOI) and total pigment analyses were carried out on a 168 cm core from the NE shore of Alchichica. Two 14-C dates on bulk sediment give an approximate chronological frame for the sequence. Total pigment content was a poor palaeoenvironmental proxy in this lake, as pigments were undetected below 56 cm, suggesting that concentration depends on degradation processes. Diatom preservation in the sediments was poor and restricted to the upper 44 cm. High pH and alkalinity in Alchichica favor diatom dissolution, limiting the potential of this lake for palaeolimnologic studies. Diatom assemblages in the upper 44 cm of the sequence suggest that the lake has remained an alkaline-subsaline system during the recent past, probably over the past 300 yr., with a very recent decrease of lake level. There is no record of short-term climatic events such as ENSO. Sediment stratigraphy and LOI data, however, suggest a past event of unknown age (>300 yr. ?), with lower than present lake levels and higher alkalinity.doi: https://doi.org/10.22201/igeof.00167169p.2003.42.3.942

773.1.#.t: Geofísica Internacional; Vol. 42 Núm. 3: Julio 1, 2003; 529-537

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

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 529-537

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

doi: https://doi.org/10.22201/igeof.00167169p.2003.42.3.942

handle: 00f22cbfed427602

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2022-07-04 07:58:54.0

file_modification_date: 2022-07-20 15:41:14.0

file_creator: Margarita Caballero

file_name: 0eeeaa3eacfd513ca980594309ce1873ef79f8bbc970641776694ef322aedf1a.pdf

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245.1.0.b: Short-term climatic change in lake sediments from lake Alchichica, Oriental, Mexico

last_modified: 2023-06-20 16:00:00

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

license_type: by-nc-sa

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