Holocene Paleohydrological Changes Reflected in Lake-Level Fluctuations in Lake Annecy (French Pre-Alps): Climatic Significance and Archeological Implications
Michel Magny
(1)
,
Eymeric Morin
(2)
,
Agnès Vérot
(2)
,
Hervé Richard
(3, 1)
,
André Marguet
(1)
,
Robin Brigand
(4, 5)
,
Franck Gabayet
(6, 7)
,
Florent Hinschberger
(8)
,
Jacques Mouthon
(9)
,
Eric Thirault
(7, 10)
1
LCE -
Laboratoire Chrono-environnement (UMR 6249)
2 Inrap, Valence - Institut national de recherches archéologiques préventives - Centre de recherches archéologiques de Valence
3 UFC - Université de Franche-Comté
4 Trajectoires - UMR 8215
5 Ville de Lyon
6 Inrap - Institut national de recherches archéologiques préventives
7 ArAr - Archéologie et Archéométrie
8 GéHCO EA6293 - GéoHydrosystèmes COntinentaux
9 UR MALY - Milieux aquatiques, écologie et pollutions
10 UL2 - Université Lumière - Lyon 2
2 Inrap, Valence - Institut national de recherches archéologiques préventives - Centre de recherches archéologiques de Valence
3 UFC - Université de Franche-Comté
4 Trajectoires - UMR 8215
5 Ville de Lyon
6 Inrap - Institut national de recherches archéologiques préventives
7 ArAr - Archéologie et Archéométrie
8 GéHCO EA6293 - GéoHydrosystèmes COntinentaux
9 UR MALY - Milieux aquatiques, écologie et pollutions
10 UL2 - Université Lumière - Lyon 2
Eymeric Morin
- Fonction : Auteur
- PersonId : 1097762
- IdHAL : eymeric-morin
Florent Hinschberger
- Fonction : Auteur
- PersonId : 177845
- IdHAL : florent-hinschberger
- IdRef : 157822885
Eric Thirault
- Fonction : Auteur
- PersonId : 13328
- IdHAL : eric-thirault
- ORCID : 0009-0002-6623-8882
- IdRef : 059247681
Résumé
Lakes are threatened by contemporary climate change and human activities. Paleohydrological records provide important evidence for developing scenarios for future changes in the availability of freshwater resources. This study presents a synthesis of a sedimentological, archeological, and chronological dataset collected from Lake Annecy (eastern France) to reconstruct a lake-level record documenting the whole Holocene. This dataset shows a pronounced minimum in the lake level during the Holocene thermal maximum (HTM) (ca. 9000–7000 cal BP), preceded by a general lowering trend (early Holocene), and followed by a general rising trend (Neoglacial). On both the millennial and centennial scales, the Lake Annecy record appears to match the regional pattern of Holocene lake-level fluctuations established for West-Central Europe. In agreement with other extra-regional paleoclimatic records, it shows the dominant influence of orbital forcing. The high magnitude of the lake-level lowering (more than 5 m) during the HTM, with a 2–2.5 °C difference between the HTM and the pre-industrial mean summer temperatures, suggests possible drastic lake-level lowering phases in the near future depending on the IPCC scenarios following climate change. This would mean dramatic impacts on human activities and the preservation of exceptional archeological remains in regional lake basins.
Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Holocene Paleohydrological Changes Reflected in Lake-Level Fluctuations in Lake Annecy (French Pre-Alps): Climatic Significance and Archeological Implications
|
Résumé |
en
Lakes are threatened by contemporary climate change and human activities. Paleohydrological records provide important evidence for developing scenarios for future changes in the availability of freshwater resources. This study presents a synthesis of a sedimentological, archeological, and chronological dataset collected from Lake Annecy (eastern France) to reconstruct a lake-level record documenting the whole Holocene. This dataset shows a pronounced minimum in the lake level during the Holocene thermal maximum (HTM) (ca. 9000–7000 cal BP), preceded by a general lowering trend (early Holocene), and followed by a general rising trend (Neoglacial). On both the millennial and centennial scales, the Lake Annecy record appears to match the regional pattern of Holocene lake-level fluctuations established for West-Central Europe. In agreement with other extra-regional paleoclimatic records, it shows the dominant influence of orbital forcing. The high magnitude of the lake-level lowering (more than 5 m) during the HTM, with a 2–2.5 °C difference between the HTM and the pre-industrial mean summer temperatures, suggests possible drastic lake-level lowering phases in the near future depending on the IPCC scenarios following climate change. This would mean dramatic impacts on human activities and the preservation of exceptional archeological remains in regional lake basins.
|
Auteur(s) |
Michel Magny
1
, Eymeric Morin
2
, Agnès Vérot
2
, Hervé Richard
3, 1
, André Marguet
1
, Robin Brigand
4, 5
, Franck Gabayet
6, 7
, Florent Hinschberger
8
, Jacques Mouthon
9
, Eric Thirault
7, 10
1
LCE -
Laboratoire Chrono-environnement (UMR 6249)
( 57629 )
- 16, route de Gray - 25030 Besançon Cedex
- France
2
Inrap, Valence -
Institut national de recherches archéologiques préventives - Centre de recherches archéologiques de Valence
( 527892 )
- Rue jean Bertin. 26000 Valence
- France
3
UFC -
Université de Franche-Comté
( 458810 )
- 1 rue Goudimel
25030 Besançon cedex
- France
4
Trajectoires - UMR 8215
( 217516 )
- 9 rue Malher, 75004 Paris
- France
5
Ville de Lyon
( 347977 )
- 69205 Lyon cedex 01
- France
6
Inrap -
Institut national de recherches archéologiques préventives
( 301475 )
- 121 rue d'Alésia
75014 Paris
- France
7
ArAr -
Archéologie et Archéométrie
( 444290 )
- 7 rue Raulin - 69365 LYON cedex 7
- France
8
GéHCO EA6293 -
GéoHydrosystèmes COntinentaux
( 210715 )
- Faculté des sciences et techniques bâtiment E Parc Grandmont 37200 TOURS
- France
9
UR MALY -
Milieux aquatiques, écologie et pollutions
( 182258 )
- 5 rue de la Doua - BP 32108, F-69616 Villeurbanne Cedex
- France
10
UL2 -
Université Lumière - Lyon 2
( 33804 )
- 86, rue Pasteur - 69007 Lyon
- France
|
Licence |
Paternité
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Langue du document |
Anglais
|
Nom de la revue |
|
Date de publication |
2024-05-29
|
Volume |
7
|
Numéro |
2
|
Page/Identifiant |
25
|
Domaine(s) |
|
DOI | 10.3390/quat7020025 |
Origine :
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