Synchronous Holocene climatic oscillations recorded on the Swiss Plateau and at timberline in the Alps
Eight synchronous pre-Roman cold phases were found at 9600–9200, 8600–8150, 7550–6900, 6600– 6200, 5350–4900, 4600–4400, 3500–3200 and 2600–2350 radiocarbon years BP by reconstructing past climate at two sites on the Swiss Plateau and at timberline in the Alps. The cooling events during the early-an...
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Online Access: | http://dx.doi.org/10.1191/095968398675491173 http://journals.sagepub.com/doi/pdf/10.1191/095968398675491173 |
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crsagepubl:10.1191/095968398675491173 2024-04-28T08:20:00+00:00 Synchronous Holocene climatic oscillations recorded on the Swiss Plateau and at timberline in the Alps Haas, Jean Nicolas Richoz, Isabelle Tinner, Willy Wick, Lucia 1998 http://dx.doi.org/10.1191/095968398675491173 http://journals.sagepub.com/doi/pdf/10.1191/095968398675491173 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 8, issue 3, page 301-309 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 1998 crsagepubl https://doi.org/10.1191/095968398675491173 2024-04-09T08:02:44Z Eight synchronous pre-Roman cold phases were found at 9600–9200, 8600–8150, 7550–6900, 6600– 6200, 5350–4900, 4600–4400, 3500–3200 and 2600–2350 radiocarbon years BP by reconstructing past climate at two sites on the Swiss Plateau and at timberline in the Alps. The cooling events during the early-and mid-Holocene represent temperature values similar to today, and apparently the onset of cooling events represents a deviation from today's mean annual temperature of about 1°C and is triggered at a 1000-year periodicity. At Wallisellen-Langachermoos (440 m), a former oligotrophic lake near Zürich, the correlation between sum mertime lake levels and the seed production of the amphi-Atlantic aquatic plant Najas flexilis was used to reconstruct lake levels over a 3000-year period during the first part of the Holocene. At Lake Seedorf on the western Swiss Plateau (609 m) the sedimentological, palynological and macrofossil record revealed fluctuations of lake levels for the complete Holocene. From Lago Basso in the southern Alps (2250 m, Val San Giacomo near Splügen Pass, Northern Italy) the terrestrial plant macrofossils – especially Pinus cembra and Larix – allowed the reconstruction of timberline fluctuations controlled by climate. A similar climatic pattern was found at Gouillé Rion pond in the central Swiss Alps (2343 m, Val d'Hérémence) with plant macrofossils and pollen concentrations and percentages. We postulate that these climatic events are detectable throughout central Europe by independent methods in combination with precise AMS-radiocarbon datings on terrestrial plant remains. Our data fit other proxy records of regional climatic change, such as cool intervals from Greenland ice cores, glacier movements in the Swiss and Austrian Alps, and dendro-densitometry on subfossil wood, as well as the palaeoclimatic data from the Jura Mountains of France obtained by sedimentological analyses. Thus our data indicate that the Northern Hemisphere climate was less stable during the Holocene than previously believed. Article in Journal/Newspaper glacier Greenland Greenland ice cores SAGE Publications The Holocene 8 3 301 309 |
institution |
Open Polar |
collection |
SAGE Publications |
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crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
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Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Haas, Jean Nicolas Richoz, Isabelle Tinner, Willy Wick, Lucia Synchronous Holocene climatic oscillations recorded on the Swiss Plateau and at timberline in the Alps |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Eight synchronous pre-Roman cold phases were found at 9600–9200, 8600–8150, 7550–6900, 6600– 6200, 5350–4900, 4600–4400, 3500–3200 and 2600–2350 radiocarbon years BP by reconstructing past climate at two sites on the Swiss Plateau and at timberline in the Alps. The cooling events during the early-and mid-Holocene represent temperature values similar to today, and apparently the onset of cooling events represents a deviation from today's mean annual temperature of about 1°C and is triggered at a 1000-year periodicity. At Wallisellen-Langachermoos (440 m), a former oligotrophic lake near Zürich, the correlation between sum mertime lake levels and the seed production of the amphi-Atlantic aquatic plant Najas flexilis was used to reconstruct lake levels over a 3000-year period during the first part of the Holocene. At Lake Seedorf on the western Swiss Plateau (609 m) the sedimentological, palynological and macrofossil record revealed fluctuations of lake levels for the complete Holocene. From Lago Basso in the southern Alps (2250 m, Val San Giacomo near Splügen Pass, Northern Italy) the terrestrial plant macrofossils – especially Pinus cembra and Larix – allowed the reconstruction of timberline fluctuations controlled by climate. A similar climatic pattern was found at Gouillé Rion pond in the central Swiss Alps (2343 m, Val d'Hérémence) with plant macrofossils and pollen concentrations and percentages. We postulate that these climatic events are detectable throughout central Europe by independent methods in combination with precise AMS-radiocarbon datings on terrestrial plant remains. Our data fit other proxy records of regional climatic change, such as cool intervals from Greenland ice cores, glacier movements in the Swiss and Austrian Alps, and dendro-densitometry on subfossil wood, as well as the palaeoclimatic data from the Jura Mountains of France obtained by sedimentological analyses. Thus our data indicate that the Northern Hemisphere climate was less stable during the Holocene than previously believed. |
format |
Article in Journal/Newspaper |
author |
Haas, Jean Nicolas Richoz, Isabelle Tinner, Willy Wick, Lucia |
author_facet |
Haas, Jean Nicolas Richoz, Isabelle Tinner, Willy Wick, Lucia |
author_sort |
Haas, Jean Nicolas |
title |
Synchronous Holocene climatic oscillations recorded on the Swiss Plateau and at timberline in the Alps |
title_short |
Synchronous Holocene climatic oscillations recorded on the Swiss Plateau and at timberline in the Alps |
title_full |
Synchronous Holocene climatic oscillations recorded on the Swiss Plateau and at timberline in the Alps |
title_fullStr |
Synchronous Holocene climatic oscillations recorded on the Swiss Plateau and at timberline in the Alps |
title_full_unstemmed |
Synchronous Holocene climatic oscillations recorded on the Swiss Plateau and at timberline in the Alps |
title_sort |
synchronous holocene climatic oscillations recorded on the swiss plateau and at timberline in the alps |
publisher |
SAGE Publications |
publishDate |
1998 |
url |
http://dx.doi.org/10.1191/095968398675491173 http://journals.sagepub.com/doi/pdf/10.1191/095968398675491173 |
genre |
glacier Greenland Greenland ice cores |
genre_facet |
glacier Greenland Greenland ice cores |
op_source |
The Holocene volume 8, issue 3, page 301-309 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1191/095968398675491173 |
container_title |
The Holocene |
container_volume |
8 |
container_issue |
3 |
container_start_page |
301 |
op_container_end_page |
309 |
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1797583173606965248 |