Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the north western Mediterranean basin.
Julien Azuara
(1)
,
Pierre Sabatier
(2)
,
V. Lebreton
(1)
,
Bassem Jalali
(3)
,
Marie-Alexandrine Sicre
(4)
,
Laurent Dezileau
(5)
,
Maria-Angela Bassetti
(6)
,
Jaime Frigola
(7)
,
Nathalie Combourieu-Nebout
(1)
1
HNHP -
Histoire naturelle de l'Homme préhistorique
2 EDYTEM - Environnements, Dynamiques et Territoires de Montagne
3 FSS - Faculté des Sciences de Sfax
4 VOG - Variabilité de l'Océan et de la Glace de mer
5 M2C - Morphodynamique Continentale et Côtière
6 CEFREM - Centre de Formation et de Recherche sur les Environnements Méditérranéens
7 UB - Universitat de Barcelona
2 EDYTEM - Environnements, Dynamiques et Territoires de Montagne
3 FSS - Faculté des Sciences de Sfax
4 VOG - Variabilité de l'Océan et de la Glace de mer
5 M2C - Morphodynamique Continentale et Côtière
6 CEFREM - Centre de Formation et de Recherche sur les Environnements Méditérranéens
7 UB - Universitat de Barcelona
Julien Azuara
- Fonction : Auteur
- PersonId : 1225181
- IdHAL : julien-azuara
- ORCID : 0000-0002-3533-3281
Pierre Sabatier
- Fonction : Auteur
- PersonId : 8569
- IdHAL : pierre-sabatier
- ORCID : 0000-0002-9620-1514
- IdRef : 112919405
V. Lebreton
- Fonction : Auteur
- PersonId : 185048
- IdHAL : vincent-lebreton
- ORCID : 0000-0002-0586-230X
- IdRef : 104413778
Marie-Alexandrine Sicre
- Fonction : Auteur
- PersonId : 176681
- IdHAL : marie-alexandrine-sicre
- ORCID : 0000-0002-5015-1400
- IdRef : 033237514
Laurent Dezileau
- Fonction : Auteur
- PersonId : 21069
- IdHAL : laurent-dezileau
- ORCID : 0000-0001-6756-2524
- IdRef : 092764339
Nathalie Combourieu-Nebout
- Fonction : Auteur
- PersonId : 172282
- IdHAL : nathalie-combourieu-nebout
- ORCID : 0000-0002-3604-5986
- IdRef : 032278268
Résumé
Forcing and mechanisms underlying Holocene climate variability still remain poorly understood. This work review already published paleoclimatic time series and proposes an alternative way to compare them using spectral analysis. Such an approach may emphasize joint features between different signals and lead us closer to the causes of past climate changes.Seven paleoclimatic proxy records from 2 sequences from the Gulf of Lion were compiled. These paleoclimate time-series were supplemented with proxies of the Atlantic area, the solar activity and a sequence recording El Niño–Southern Oscillations (ENSO) past variability. A comparison of their frequency content is proposed using wavelet spectral analysis for unevenly sampled time series. A new algorithm is used in order to propagate the age model errors within wavelet power spectra.Two main groups of shared spectral features specific to the Mid- and Late Holocene (after 8200 yrs. cal BP) can be defined on the basis of the results of these analyses, an Atlantic spectral feature (~1500 yrs) and two possible tropical Pacific spectral features (600–700 and 2000–2200 yrs). The Atlantic cyclic period is probably related to fluctuations of the Atlantic thermohaline circulation which would induce changes in the storm track extension and position thereby impacting upon precipitation and storminess over a millennial scale. The ENSO variability spectral features which are registered in the Gulf of Lion proxies, potentially highlight a possible link between the tropical Pacific and the western Mediterranean climates during the Mid to late Holocene that needs to be further investigated
Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Résumé |
en
Forcing and mechanisms underlying Holocene climate variability still remain poorly understood. This work review already published paleoclimatic time series and proposes an alternative way to compare them using spectral analysis. Such an approach may emphasize joint features between different signals and lead us closer to the causes of past climate changes.Seven paleoclimatic proxy records from 2 sequences from the Gulf of Lion were compiled. These paleoclimate time-series were supplemented with proxies of the Atlantic area, the solar activity and a sequence recording El Niño–Southern Oscillations (ENSO) past variability. A comparison of their frequency content is proposed using wavelet spectral analysis for unevenly sampled time series. A new algorithm is used in order to propagate the age model errors within wavelet power spectra.Two main groups of shared spectral features specific to the Mid- and Late Holocene (after 8200 yrs. cal BP) can be defined on the basis of the results of these analyses, an Atlantic spectral feature (~1500 yrs) and two possible tropical Pacific spectral features (600–700 and 2000–2200 yrs). The Atlantic cyclic period is probably related to fluctuations of the Atlantic thermohaline circulation which would induce changes in the storm track extension and position thereby impacting upon precipitation and storminess over a millennial scale. The ENSO variability spectral features which are registered in the Gulf of Lion proxies, potentially highlight a possible link between the tropical Pacific and the western Mediterranean climates during the Mid to late Holocene that needs to be further investigated
|
Titre |
en
Mid- to Late-Holocene Mediterranean climate variability: Contribution of multi-proxy and multi-sequence comparison using wavelet analysis in the north western Mediterranean basin.
|
Auteur(s) |
Julien Azuara
1
, Pierre Sabatier
2
, V. Lebreton
1
, Bassem Jalali
3
, Marie-Alexandrine Sicre
4
, Laurent Dezileau
5
, Maria-Angela Bassetti
6
, Jaime Frigola
7
, Nathalie Combourieu-Nebout
1
1
HNHP -
Histoire naturelle de l'Homme préhistorique
( 121947 )
- Institut de Paléontologie Humaine - 1, rue René Panhard - 75013 Paris
- France
2
EDYTEM -
Environnements, Dynamiques et Territoires de Montagne
( 20150 )
- Université de Savoie, Campus scientifique, 73376 Le Bourget du Lac cedex
- France
3
FSS -
Faculté des Sciences de Sfax
( 210122 )
- Route de la Soukra km 3.5 - B.P. n° 1171 - 3000 Sfax
- Tunisie
4
VOG -
Variabilité de l'Océan et de la Glace de mer
( 541825 )
- France
5
M2C -
Morphodynamique Continentale et Côtière
( 847 )
- 24 rue des Tilleuls 14000 Caen
- France
6
CEFREM -
Centre de Formation et de Recherche sur les Environnements Méditérranéens
( 251578 )
- 52, Avenue Paul Alduy, 66860 Perpignan Cedex. France
- France
7
UB -
Universitat de Barcelona
( 3447 )
- Gran Via de les Corts Catalanes, 585, 08007 Barcelona
- Espagne
|
Langue du document |
Anglais
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Volume |
208
|
Page/Identifiant |
103232
|
Nom de la revue |
|
Commentaire |
(IF 12.41; Q1)
|
Licence |
Paternité - Pas d'utilisation commerciale - Partage selon les Conditions Initiales
|
Date de production/écriture |
2019
|
Date de publication |
2020
|
Date de publication électronique |
2020-06-02
|
Référence interne |
|
Financement |
|
Domaine(s) |
|
Collaboration/Projet |
|
Mots-clés |
en
Holocene, Paleoclimatology, Climate dynamics, Mediterranean, Wavelet spectral analysis, Continental biomarkers, Marine biomarkers, Sediment mineralogy, Vegetation dynamics
|
DOI | 10.1016/j.earscirev.2020.103232 |
UT key WOS | 000575843900004 |
Origine :
Fichiers produits par l'(les) auteur(s)
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