Environment and climate of the last 51,000 years – new insights from the Potrok Aike maar lake Sediment Archive Drilling prOject (PASADO)

Zolitschka, B.; Anselmetti, F.; Ariztegui, Daniel; Corbella, H.; Francus, P.; Lücke, A.; Maidana, N.I.; Ohlendorf, C.; Schäbitz, F.; Wastegård, S.

doi:10.1016/j.quascirev.2012.11.024

Scientific article

English

Environment and climate of the last 51,000 years – new insights from the Potrok Aike maar lake Sediment Archive Drilling prOject (PASADO)

Contributors

Zolitschka, B.; Anselmetti, F.; Ariztegui, Daniel

; Corbella, H.; Francus, P.; Lücke, A.; Maidana, N.I.; Ohlendorf, C.; Schäbitz, F.; Wastegård, S.

Published in

Quaternary science reviews, vol. 71, p. 1-12

Publication date

2013

Abstract

In this introductory paper we summarize the history and achievements of the Potrok Aike maar lake Sediment Archive Drilling prOject(PASADO), an interdisciplinary project embedded in the International Continental Scientific Drilling Program (ICDP). The stringent multiproxy approach adopted in this research combined with radiocarbon and luminescence dating provided the opportunity to synthesize a large body of hydrologically relevant data from Laguna Potrok Aike (southern Patagonia, Argentina). At this site, lake level was high from 51 ka until the early Holocene when the Southern Hemisphere Westerlies (SHW) were located further to the north. At 9.3 ka cal. BP the SHW moved southward and over the latitude of the study area (52°S) causing a pronounced negative water balance with a lake level decrease of more than 50 m. Two millennia later, the SHW diminished in intensity and lake level rose to a subsequent maximum during the Little Ice Age. Since the 20th century, a strengthening of the SHW increased the evaporative stress resulting in a more negative water balance. A comparison of our data with other hydrological fluctuations at a regional scale in south-eastern Patagonia, provides new insights and also calls for better chronologies and high-resolution records of climate variability.

Keywords

Lake level
Water balance
Southern Hemispheric Westerlies
Last Glacial
Holocene
Southern Patagonia
Argentina
ICDP

UNIGE affiliation entities

UNIGE research groups

Limnology and Geomicrobiology

Funding

Swiss National Science Foundation - Potrok Aike Maar Lake Sediment Archive Drilling Project - The Swiss contribution (PASADO-CH)
Swiss National Science Foundation - Potrok Aike Maar Lake Sediments Archive Drilling Project - The Swiss contribution (PASADO-CH). Phase II [134545]

Citation (ISO format)

ZOLITSCHKA, B. et al. Environment and climate of the last 51,000 years – new insights from the Potrok Aike maar lake Sediment Archive Drilling prOject (PASADO). In: Quaternary science reviews, 2013, vol. 71, p. 1–12. doi: 10.1016/j.quascirev.2012.11.024

Article (Published version)

Identifiers

PID : unige:30141
DOI : 10.1016/j.quascirev.2012.11.024

Additional URL for this publication

http://linkinghub.elsevier.com/retrieve/pii/S0277379112004957

Journal ISSN

0277-3791

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02/10/2013 21:10:00

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02/10/2013 21:10:00

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15/11/2024 15:47:38

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15/11/2024 15:47:38

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15/11/2024 15:50:23

Environment and climate of the last 51,000 years – new insights from the Potrok Aike maar lake Sediment Archive Drilling prOject (PASADO)

Contributors

Published in

Publication date

Abstract

Keywords

UNIGE affiliation entities

UNIGE research groups

Funding

Citation (ISO format)

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Additional URL for this publication

Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation