Glacial retreat and its geomorphologic effects on Mexico’s active volcanoes, 1994–95
Abstract The northern slopes of Mexico’s great, active stratovolcanoes, Popocatépetl (5450 m.a.s.l.) and Pico de Orizaba (5700 m a.s.l.), are covered by glaciers. This paper analyzes the retreat of the glaciers between February 1994 and October 1995, and its geo-morphological consequences. The resul...
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crcambridgeupr:10.1017/s0022143000002355 2024-03-03T08:46:00+00:00 Glacial retreat and its geomorphologic effects on Mexico’s active volcanoes, 1994–95 Palacios, David Marcos, Javier De 1998 http://dx.doi.org/10.1017/s0022143000002355 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000002355 en eng Cambridge University Press (CUP) Journal of Glaciology volume 44, issue 146, page 63-67 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1998 crcambridgeupr https://doi.org/10.1017/s0022143000002355 2024-02-08T08:39:08Z Abstract The northern slopes of Mexico’s great, active stratovolcanoes, Popocatépetl (5450 m.a.s.l.) and Pico de Orizaba (5700 m a.s.l.), are covered by glaciers. This paper analyzes the retreat of the glaciers between February 1994 and October 1995, and its geo-morphological consequences. The results discussed are a continuation of research conducted on the volcanoes up to 1994. Although the glaciers retreated a great deal during the 1980s and early 1990s, the process accelerated from 1994 to 1995. The heavy erosion that had been observed on the deglaciated walls of the volcanoes during these decades increased as the glaciers retreated. Sediments originating from material loosened from the exposed lateral walls added to the supraglacial layer. Temperature readings taken from boreholes made in the glaciers indicated that ablation had been reduced as a result of the insulating effects of the debris mantle. This allowed widespread formation of deposits that buried ice in areas where the glacier had already disappeared. These results confirmed the conclusions of earlier studies that deglaciation of stratovolcanoes has resulted in the acceleration of slope processes and the formation of buried ice deposits. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 44 146 63 67 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Palacios, David Marcos, Javier De Glacial retreat and its geomorphologic effects on Mexico’s active volcanoes, 1994–95 |
topic_facet |
Earth-Surface Processes |
description |
Abstract The northern slopes of Mexico’s great, active stratovolcanoes, Popocatépetl (5450 m.a.s.l.) and Pico de Orizaba (5700 m a.s.l.), are covered by glaciers. This paper analyzes the retreat of the glaciers between February 1994 and October 1995, and its geo-morphological consequences. The results discussed are a continuation of research conducted on the volcanoes up to 1994. Although the glaciers retreated a great deal during the 1980s and early 1990s, the process accelerated from 1994 to 1995. The heavy erosion that had been observed on the deglaciated walls of the volcanoes during these decades increased as the glaciers retreated. Sediments originating from material loosened from the exposed lateral walls added to the supraglacial layer. Temperature readings taken from boreholes made in the glaciers indicated that ablation had been reduced as a result of the insulating effects of the debris mantle. This allowed widespread formation of deposits that buried ice in areas where the glacier had already disappeared. These results confirmed the conclusions of earlier studies that deglaciation of stratovolcanoes has resulted in the acceleration of slope processes and the formation of buried ice deposits. |
format |
Article in Journal/Newspaper |
author |
Palacios, David Marcos, Javier De |
author_facet |
Palacios, David Marcos, Javier De |
author_sort |
Palacios, David |
title |
Glacial retreat and its geomorphologic effects on Mexico’s active volcanoes, 1994–95 |
title_short |
Glacial retreat and its geomorphologic effects on Mexico’s active volcanoes, 1994–95 |
title_full |
Glacial retreat and its geomorphologic effects on Mexico’s active volcanoes, 1994–95 |
title_fullStr |
Glacial retreat and its geomorphologic effects on Mexico’s active volcanoes, 1994–95 |
title_full_unstemmed |
Glacial retreat and its geomorphologic effects on Mexico’s active volcanoes, 1994–95 |
title_sort |
glacial retreat and its geomorphologic effects on mexico’s active volcanoes, 1994–95 |
publisher |
Cambridge University Press (CUP) |
publishDate |
1998 |
url |
http://dx.doi.org/10.1017/s0022143000002355 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000002355 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 44, issue 146, page 63-67 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000002355 |
container_title |
Journal of Glaciology |
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44 |
container_issue |
146 |
container_start_page |
63 |
op_container_end_page |
67 |
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1792501765935988736 |