Articles | Volume 15, issue 1
https://doi.org/10.5194/cp-15-253-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/cp-15-253-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Feb 2019
Research article |
| 07 Feb 2019
| 07 Feb 2019
Diatom-oxygen isotope record from high-altitude Lake Petit (2200 m a.s.l.) in the Mediterranean Alps: shedding light on a climatic pulse at 4.2 ka
Rosine Cartier
CORRESPONDING AUTHOR
Aix-Marseille University, CNRS, IRD, Collège de France, INRA, CEREGE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
Aix-Marseille University, CNRS, IRD, Avignon University, IMBE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
Lund University, Department of Geology, Lund, Sweden
Florence Sylvestre
Aix-Marseille University, CNRS, IRD, Collège de France, INRA, CEREGE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
Christine Paillès
Aix-Marseille University, CNRS, IRD, Collège de France, INRA, CEREGE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
Corinne Sonzogni
Aix-Marseille University, CNRS, IRD, Collège de France, INRA, CEREGE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
Martine Couapel
Aix-Marseille University, CNRS, IRD, Collège de France, INRA, CEREGE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
Anne Alexandre
Aix-Marseille University, CNRS, IRD, Collège de France, INRA, CEREGE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
Jean-Charles Mazur
Aix-Marseille University, CNRS, IRD, Collège de France, INRA, CEREGE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
Elodie Brisset
IPHES, Institut Català de Paleoecologia Humana i Evolució Social, Tarragona, Spain
Àrea de Prehistòria, Universitat Rovira i Virgili, Tarragona, Spain
Cécile Miramont
Aix-Marseille University, CNRS, IRD, Avignon University, IMBE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
Frédéric Guiter
Aix-Marseille University, CNRS, IRD, Avignon University, IMBE, Europôle de l'Arbois, 13545 Aix-en-Provence, France
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Florence Sylvestre, Mathieu Schuster, Hendrik Vogel, Moussa Abdheramane, Daniel Ariztegui, Ulrich Salzmann, Antje Schwalb, Nicolas Waldmann, and the ICDP CHADRILL Consortium
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Anne Alexandre, Jérôme Balesdent, Patrick Cazevieille, Claire Chevassus-Rosset, Patrick Signoret, Jean-Charles Mazur, Araks Harutyunyan, Emmanuel Doelsch, Isabelle Basile-Doelsch, Hélène Miche, and Guaciara M. Santos
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A. Alexandre, I. Basile-Doelsch, T. Delhaye, D. Borshneck, J. C. Mazur, P. Reyerson, and G. M. Santos
Biogeosciences, 12, 863–873, https://doi.org/10.5194/bg-12-863-2015, https://doi.org/10.5194/bg-12-863-2015, 2015
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Phytoliths contain occluded organic compounds called phytC. The nature and location of phytC in biogenic silica structures is poorly understood. Here, we reconstructed the 3-D structure of phytoliths using 3-D Xray microscopy. We further evidenced a pool of phytC, continuously distributed in the silica structure, using nanoscale secondary ion mass spectrometry (NanoSIMS). Our findings allowed the re-evaluation of previous suggestions regarding phytC quantification and environmental meaning.
M. C. Matteuzzo, A. Alexandre, A. F. D. C. Varajão, C. Volkmer-Ribeiro, A. C. S. Almeida, C. A. C. Varajão, C. Vallet-Coulomb, C. Sonzogni, and H. Miche
Biogeosciences Discuss., https://doi.org/10.5194/bgd-10-12887-2013, https://doi.org/10.5194/bgd-10-12887-2013, 2013
Revised manuscript not accepted
P. G. C. Amaral, A. Vincens, J. Guiot, G. Buchet, P. Deschamps, J.-C. Doumnang, and F. Sylvestre
Clim. Past, 9, 223–241, https://doi.org/10.5194/cp-9-223-2013, https://doi.org/10.5194/cp-9-223-2013, 2013
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Carolyne Pickler, Hugo Beltrami, and Jean-Claude Mareschal
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Jean-Francois Berger, Laurent Lespez, Catherine Kuzucuoğlu, Arthur Glais, Fuad Hourani, Adrien Barra, and Jean Guilaine
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C. Pickler, H. Beltrami, and J.-C. Mareschal
Clim. Past, 12, 115–127, https://doi.org/10.5194/cp-12-115-2016, https://doi.org/10.5194/cp-12-115-2016, 2016
J. Ruan, F. Kherbouche, D. Genty, D. Blamart, H. Cheng, F. Dewilde, S. Hachi, R. L. Edwards, E. Régnier, and J.-L. Michelot
Clim. Past, 12, 1–14, https://doi.org/10.5194/cp-12-1-2016, https://doi.org/10.5194/cp-12-1-2016, 2016
N. L. Balascio, W. J. D'Andrea, and R. S. Bradley
Clim. Past, 11, 1587–1598, https://doi.org/10.5194/cp-11-1587-2015, https://doi.org/10.5194/cp-11-1587-2015, 2015
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Sediment cores were collected from a lake that captures runoff from two glaciers in Greenland. Our analysis of the sediments shows that these glaciers were active over the last 9,000 years and advanced and retreated in response to regional climate changes. The data also provide a long-term perspective on the rate of 20th century glacier retreat and indicate that recent anthropogenic-driven warming has already impacted the regional cryosphere in a manner outside the range of natural variability.
A. Rodríguez-Ramírez, M. Caballero, P. Roy, B. Ortega, G. Vázquez-Castro, and S. Lozano-García
Clim. Past, 11, 1239–1248, https://doi.org/10.5194/cp-11-1239-2015, https://doi.org/10.5194/cp-11-1239-2015, 2015
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We present results from western Mexico, where very few palaeoclimatic research sites exist. The record has good chronological resolution (ca. 20 years) and clear climatic trends during the last 2ka. The most important signals are: dry conditions during the late Classic (AD 500 to 1000), especially from AD 600 to 800, and low lake levels during the LIA, in two phases that follow Spörer and Maunder solar minima. Drier conditions are related with a lower intensity of the North American monsoon.
S. Albani, N. M. Mahowald, G. Winckler, R. F. Anderson, L. I. Bradtmiller, B. Delmonte, R. François, M. Goman, N. G. Heavens, P. P. Hesse, S. A. Hovan, S. G. Kang, K. E. Kohfeld, H. Lu, V. Maggi, J. A. Mason, P. A. Mayewski, D. McGee, X. Miao, B. L. Otto-Bliesner, A. T. Perry, A. Pourmand, H. M. Roberts, N. Rosenbloom, T. Stevens, and J. Sun
Clim. Past, 11, 869–903, https://doi.org/10.5194/cp-11-869-2015, https://doi.org/10.5194/cp-11-869-2015, 2015
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We propose an innovative framework to organize paleodust records, formalized in a publicly accessible database, and discuss the emerging properties of the global dust cycle during the Holocene by integrating our analysis with simulations performed with the Community Earth System Model. We show how the size distribution of dust is intrinsically related to the dust mass accumulation rates and that only considering a consistent size range allows for a consistent analysis of the global dust cycle.
H. Beltrami, G. S. Matharoo, L. Tarasov, V. Rath, and J. E. Smerdon
Clim. Past, 10, 1693–1706, https://doi.org/10.5194/cp-10-1693-2014, https://doi.org/10.5194/cp-10-1693-2014, 2014
C. Spötl and H. Cheng
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Short summary
A major environmental change, 4200 years ago, was recorded in the lacustrine sediments of Lake Petit (Mediterranean Alps). The regime shift was described by a modification in erosion processes in the watershed and aquatic species in the lake. This study, based on the analysis of the lake water balance by using oxygen isotopes in diatoms, revealed that these environmental responses were due to a rapid change in precipitation regime, lasting ca. 500 years.
A major environmental change, 4200 years ago, was recorded in the lacustrine sediments of Lake...
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