Permafrost and Little Ice Age glacier relationships, Posets Massif, Central Pyrenees, Spain
Abstract This paper contributes to the study of permafrost in the Pyrenees by reporting geoelectrical investigations and thermal measurement on the Little Ice Age (LIA) forefields of two glaciers. The aim was to assess the internal composition of sedimentary bodies (debris rock glaciers and moraine...
Published in: | Permafrost and Periglacial Processes |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2004
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ppp.494 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.494 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.494 |
id |
crwiley:10.1002/ppp.494 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ppp.494 2024-09-15T18:11:20+00:00 Permafrost and Little Ice Age glacier relationships, Posets Massif, Central Pyrenees, Spain Lugon, Ralph Delaloye, Reynald Serrano, Enrique Reynard, Emmanuel Lambiel, Christophe González‐Trueba, Juan J. 2004 http://dx.doi.org/10.1002/ppp.494 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.494 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.494 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 15, issue 3, page 207-220 ISSN 1045-6740 1099-1530 journal-article 2004 crwiley https://doi.org/10.1002/ppp.494 2024-08-06T04:17:05Z Abstract This paper contributes to the study of permafrost in the Pyrenees by reporting geoelectrical investigations and thermal measurement on the Little Ice Age (LIA) forefields of two glaciers. The aim was to assess the internal composition of sedimentary bodies (debris rock glaciers and moraine deposits) located in this proglacial environment. Ground ice was prospected using two DC resistivity techniques: vertical electrical soundings and resistivity mapping at a fixed pseudo‐depth. Extreme specific resistivities ranging between 1 and 25 MΩ m were detected under a thin (1–2 m) unfrozen layer, indicating the presence of a massive ice layer, certainly buried glacier ice. This ice of glacial origin probably covers former permafrost bodies, i.e. a much thicker layer of perennially frozen sediments. Low subsurface temperatures measured on the deposits indicate that buried glacier ice could have been preserved on top of permafrost since the end of the LIA or earlier Holocene glacier advances. This stratigraphy demonstrates that glaciers and pre‐existing perennially frozen sediments (permafrost) were in contact during the LIA. Copyright © 2004 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 15 3 207 220 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract This paper contributes to the study of permafrost in the Pyrenees by reporting geoelectrical investigations and thermal measurement on the Little Ice Age (LIA) forefields of two glaciers. The aim was to assess the internal composition of sedimentary bodies (debris rock glaciers and moraine deposits) located in this proglacial environment. Ground ice was prospected using two DC resistivity techniques: vertical electrical soundings and resistivity mapping at a fixed pseudo‐depth. Extreme specific resistivities ranging between 1 and 25 MΩ m were detected under a thin (1–2 m) unfrozen layer, indicating the presence of a massive ice layer, certainly buried glacier ice. This ice of glacial origin probably covers former permafrost bodies, i.e. a much thicker layer of perennially frozen sediments. Low subsurface temperatures measured on the deposits indicate that buried glacier ice could have been preserved on top of permafrost since the end of the LIA or earlier Holocene glacier advances. This stratigraphy demonstrates that glaciers and pre‐existing perennially frozen sediments (permafrost) were in contact during the LIA. Copyright © 2004 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Lugon, Ralph Delaloye, Reynald Serrano, Enrique Reynard, Emmanuel Lambiel, Christophe González‐Trueba, Juan J. |
spellingShingle |
Lugon, Ralph Delaloye, Reynald Serrano, Enrique Reynard, Emmanuel Lambiel, Christophe González‐Trueba, Juan J. Permafrost and Little Ice Age glacier relationships, Posets Massif, Central Pyrenees, Spain |
author_facet |
Lugon, Ralph Delaloye, Reynald Serrano, Enrique Reynard, Emmanuel Lambiel, Christophe González‐Trueba, Juan J. |
author_sort |
Lugon, Ralph |
title |
Permafrost and Little Ice Age glacier relationships, Posets Massif, Central Pyrenees, Spain |
title_short |
Permafrost and Little Ice Age glacier relationships, Posets Massif, Central Pyrenees, Spain |
title_full |
Permafrost and Little Ice Age glacier relationships, Posets Massif, Central Pyrenees, Spain |
title_fullStr |
Permafrost and Little Ice Age glacier relationships, Posets Massif, Central Pyrenees, Spain |
title_full_unstemmed |
Permafrost and Little Ice Age glacier relationships, Posets Massif, Central Pyrenees, Spain |
title_sort |
permafrost and little ice age glacier relationships, posets massif, central pyrenees, spain |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1002/ppp.494 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.494 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.494 |
genre |
Ice permafrost Permafrost and Periglacial Processes |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 15, issue 3, page 207-220 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.494 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
15 |
container_issue |
3 |
container_start_page |
207 |
op_container_end_page |
220 |
_version_ |
1810448923800633344 |