Zur Gletscher-, Vegetations- und Klimageschichte der Schweiz seit der Späteiszeit
A Statistical analysis of published and compilated snowline data for the late-glacial Stades of Gschnitz, Clavadel, Daun and Egesen is presented. The calculation of snowline and snowline-depression (compared to the extent of 1850) is based on the 2: 1 -equilibrium line method. The Interpretation doe...
Published in: | Geographica Helvetica |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2018
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Online Access: | https://doi.org/10.5194/gh-42-61-1987 https://gh.copernicus.org/articles/42/61/1987/ |
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fttriple:oai:gotriple.eu:p1nOjOexPC6MlFhFBGeHh 2023-05-15T15:44:30+02:00 Zur Gletscher-, Vegetations- und Klimageschichte der Schweiz seit der Späteiszeit Furrer, G. Burga, C. Gamper, M. Holzhauser, H.-P. Maisch, M. 2018-01-15 https://doi.org/10.5194/gh-42-61-1987 https://gh.copernicus.org/articles/42/61/1987/ en eng Copernicus Publications doi:10.5194/gh-42-61-1987 10670/1.etcvy0 0016-7312 2194-8798 https://gh.copernicus.org/articles/42/61/1987/ undefined Geographica Helvetica - geography eISSN: 2194-8798 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.5194/gh-42-61-1987 2023-01-22T17:51:46Z A Statistical analysis of published and compilated snowline data for the late-glacial Stades of Gschnitz, Clavadel, Daun and Egesen is presented. The calculation of snowline and snowline-depression (compared to the extent of 1850) is based on the 2: 1 -equilibrium line method. The Interpretation does not show significant differences in snowline-depression between the Lower Engadin (Eastern Alps) and the Mont Blanc area (Western Alps). The larger deviations from the averages can be explained by the glacier individuality (morphology, topography of the ice surfaces) and the rarely considered variations ot the "constant" 2 :1-ration. Geographical patterns, which could imply changes in paleo-precipitation, cannot be found in the investigated area. The Quaternary Vegetation history provides evidence for climatic changes and timberline fluctuations which took place during the Late-Glacial and Holocene and also provides a framework for biostratigraphical results. During the Oldest Dryas a heliophile Artemisia-Chenopodiceae-Helianthemum- Thalictrum-Ephedra-Juniperus-Betula nana pioneer Vegetation covered the icefree areas in Switzerland. The oldest pollen spectra found in clay gyttja Sediments are dated between 13,000 and 14,000 y BP by the radiocarbon method. The development of the Swiss Central Alpine wood belt since the Late-Glacial is shown in Fig. 11. Postglacial alterations of the geomorphological activity in the Alps can be reconstructed by radiocarbon dating of fossil soils found in moraines. earth-flows and talus deposits. The results show that the geomorphological activity was very slow up to 4500 y BP; but the second part of the postglacial period was marked by often changing phases of activity and stability. Differing qualities of the evidence relating to glacial history and the absence of glacier advances within several periods of the Holocene make it impossible to reconstruct a complete curve of the glacier movements. With the aid of a graphical diagram which includes both evidence on glacier fluctuations ... Article in Journal/Newspaper Betula nana Unknown Mont Blanc ENVELOPE(69.468,69.468,-49.461,-49.461) Geographica Helvetica 42 2 61 91 |
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Open Polar |
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Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir Furrer, G. Burga, C. Gamper, M. Holzhauser, H.-P. Maisch, M. Zur Gletscher-, Vegetations- und Klimageschichte der Schweiz seit der Späteiszeit |
topic_facet |
geo envir |
description |
A Statistical analysis of published and compilated snowline data for the late-glacial Stades of Gschnitz, Clavadel, Daun and Egesen is presented. The calculation of snowline and snowline-depression (compared to the extent of 1850) is based on the 2: 1 -equilibrium line method. The Interpretation does not show significant differences in snowline-depression between the Lower Engadin (Eastern Alps) and the Mont Blanc area (Western Alps). The larger deviations from the averages can be explained by the glacier individuality (morphology, topography of the ice surfaces) and the rarely considered variations ot the "constant" 2 :1-ration. Geographical patterns, which could imply changes in paleo-precipitation, cannot be found in the investigated area. The Quaternary Vegetation history provides evidence for climatic changes and timberline fluctuations which took place during the Late-Glacial and Holocene and also provides a framework for biostratigraphical results. During the Oldest Dryas a heliophile Artemisia-Chenopodiceae-Helianthemum- Thalictrum-Ephedra-Juniperus-Betula nana pioneer Vegetation covered the icefree areas in Switzerland. The oldest pollen spectra found in clay gyttja Sediments are dated between 13,000 and 14,000 y BP by the radiocarbon method. The development of the Swiss Central Alpine wood belt since the Late-Glacial is shown in Fig. 11. Postglacial alterations of the geomorphological activity in the Alps can be reconstructed by radiocarbon dating of fossil soils found in moraines. earth-flows and talus deposits. The results show that the geomorphological activity was very slow up to 4500 y BP; but the second part of the postglacial period was marked by often changing phases of activity and stability. Differing qualities of the evidence relating to glacial history and the absence of glacier advances within several periods of the Holocene make it impossible to reconstruct a complete curve of the glacier movements. With the aid of a graphical diagram which includes both evidence on glacier fluctuations ... |
format |
Article in Journal/Newspaper |
author |
Furrer, G. Burga, C. Gamper, M. Holzhauser, H.-P. Maisch, M. |
author_facet |
Furrer, G. Burga, C. Gamper, M. Holzhauser, H.-P. Maisch, M. |
author_sort |
Furrer, G. |
title |
Zur Gletscher-, Vegetations- und Klimageschichte der Schweiz seit der Späteiszeit |
title_short |
Zur Gletscher-, Vegetations- und Klimageschichte der Schweiz seit der Späteiszeit |
title_full |
Zur Gletscher-, Vegetations- und Klimageschichte der Schweiz seit der Späteiszeit |
title_fullStr |
Zur Gletscher-, Vegetations- und Klimageschichte der Schweiz seit der Späteiszeit |
title_full_unstemmed |
Zur Gletscher-, Vegetations- und Klimageschichte der Schweiz seit der Späteiszeit |
title_sort |
zur gletscher-, vegetations- und klimageschichte der schweiz seit der späteiszeit |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/gh-42-61-1987 https://gh.copernicus.org/articles/42/61/1987/ |
long_lat |
ENVELOPE(69.468,69.468,-49.461,-49.461) |
geographic |
Mont Blanc |
geographic_facet |
Mont Blanc |
genre |
Betula nana |
genre_facet |
Betula nana |
op_source |
Geographica Helvetica - geography eISSN: 2194-8798 |
op_relation |
doi:10.5194/gh-42-61-1987 10670/1.etcvy0 0016-7312 2194-8798 https://gh.copernicus.org/articles/42/61/1987/ |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/gh-42-61-1987 |
container_title |
Geographica Helvetica |
container_volume |
42 |
container_issue |
2 |
container_start_page |
61 |
op_container_end_page |
91 |
_version_ |
1766378879544459264 |