Gravimetrical investigation of ice‐rich permafrost within the rock glacier Murtèl‐Corvatsch (upper Engadin, swiss alps)
Abstract A gravimetrical study was carried out in the area of the Murtèl‐Corvatsch rock glacier in order to check the applicability of this method in alpine permafrost. The residual anomaly observed after removal of the linear regional trend is up to −1.5 mgal. Cores of borehole 2/1987 through this...
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crwiley:10.1002/ppp.3430050103 2024-06-02T08:07:59+00:00 Gravimetrical investigation of ice‐rich permafrost within the rock glacier Murtèl‐Corvatsch (upper Engadin, swiss alps) Vonder Mühll, Daniel S. Klingelé, Emile E. 1994 http://dx.doi.org/10.1002/ppp.3430050103 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430050103 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430050103 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 5, issue 1, page 13-24 ISSN 1045-6740 1099-1530 journal-article 1994 crwiley https://doi.org/10.1002/ppp.3430050103 2024-05-03T11:20:15Z Abstract A gravimetrical study was carried out in the area of the Murtèl‐Corvatsch rock glacier in order to check the applicability of this method in alpine permafrost. The residual anomaly observed after removal of the linear regional trend is up to −1.5 mgal. Cores of borehole 2/1987 through this rock glacier showed a very high ice content in the uppermost 30 m. Borehole geophysical measurements furnished the density distribution with depth at the drill site showing values of less than 1000 kg m −3 . According to the core stratigraphy and the density log at the drill site four layers were distinguished: an active layer to 3 m depth; massive ice (3–20 m); an ice‐silt‐sand layer (20–30 m); and a layer with ice‐saturated blocks (30–50 m). The extension of the four distinguished layers is modelled in three dimensions for the entire rock glacier according to the gravity data. The bedrock underneath the creeping permafrost is bowl‐shaped. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 5 1 13 24 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract A gravimetrical study was carried out in the area of the Murtèl‐Corvatsch rock glacier in order to check the applicability of this method in alpine permafrost. The residual anomaly observed after removal of the linear regional trend is up to −1.5 mgal. Cores of borehole 2/1987 through this rock glacier showed a very high ice content in the uppermost 30 m. Borehole geophysical measurements furnished the density distribution with depth at the drill site showing values of less than 1000 kg m −3 . According to the core stratigraphy and the density log at the drill site four layers were distinguished: an active layer to 3 m depth; massive ice (3–20 m); an ice‐silt‐sand layer (20–30 m); and a layer with ice‐saturated blocks (30–50 m). The extension of the four distinguished layers is modelled in three dimensions for the entire rock glacier according to the gravity data. The bedrock underneath the creeping permafrost is bowl‐shaped. |
format |
Article in Journal/Newspaper |
author |
Vonder Mühll, Daniel S. Klingelé, Emile E. |
spellingShingle |
Vonder Mühll, Daniel S. Klingelé, Emile E. Gravimetrical investigation of ice‐rich permafrost within the rock glacier Murtèl‐Corvatsch (upper Engadin, swiss alps) |
author_facet |
Vonder Mühll, Daniel S. Klingelé, Emile E. |
author_sort |
Vonder Mühll, Daniel S. |
title |
Gravimetrical investigation of ice‐rich permafrost within the rock glacier Murtèl‐Corvatsch (upper Engadin, swiss alps) |
title_short |
Gravimetrical investigation of ice‐rich permafrost within the rock glacier Murtèl‐Corvatsch (upper Engadin, swiss alps) |
title_full |
Gravimetrical investigation of ice‐rich permafrost within the rock glacier Murtèl‐Corvatsch (upper Engadin, swiss alps) |
title_fullStr |
Gravimetrical investigation of ice‐rich permafrost within the rock glacier Murtèl‐Corvatsch (upper Engadin, swiss alps) |
title_full_unstemmed |
Gravimetrical investigation of ice‐rich permafrost within the rock glacier Murtèl‐Corvatsch (upper Engadin, swiss alps) |
title_sort |
gravimetrical investigation of ice‐rich permafrost within the rock glacier murtèl‐corvatsch (upper engadin, swiss alps) |
publisher |
Wiley |
publishDate |
1994 |
url |
http://dx.doi.org/10.1002/ppp.3430050103 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430050103 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430050103 |
genre |
Ice permafrost Permafrost and Periglacial Processes |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 5, issue 1, page 13-24 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.3430050103 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
5 |
container_issue |
1 |
container_start_page |
13 |
op_container_end_page |
24 |
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1800753128101904384 |