Holocene glacier history of northeastern Cordillera Darwin, southernmost South America (55°S)
Holocene glacier history of northeastern Cordillera Darwin, southernmost South America (55°S)
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南美洲最南端(南纬55°)达尔文山脉东北部的全新世冰川历史
DOI:
10.1017/qua.2021.45
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发表时间:
2021
影响因子:
2.3
通讯作者:
Schaefer, Joerg M.
中科院分区:
文献类型:
--
作者:
Reynhout, Scott A.;Kaplan, Michael R.;Sagredo, Esteban A.;Aravena, Juan Carlos;Soteres, Rodrigo L.;Schwartz, Roseanne;Schaefer, Joerg M.
In the Cordillera Darwin, southernmost South America, we used 10Be and 14C dating, dendrochronology, and historical observations to reconstruct the glacial history of the Dalla Vedova valley from deglacial time to the present. After deglacial recession into northeastern Darwin and Dalla Vedova, by ~16 ka, evidence indicates a glacial advance at ~13 ka coeval with the Antarctic Cold Reversal. The next robustly dated glacial expansion occurred at 870 ± 60 calendar yr ago (approximately AD 1150), followed by less-extensive dendrochronologically constrained advances from shortly before AD 1836 to the mid-twentieth century. Our record is consistent with most studies within the Cordillera Darwin that show that the Holocene glacial maximum occurred during the last millennium. This pattern contrasts with the extensive early- and mid-Holocene glacier expansions farther north in Patagonia; furthermore, an advance at 870 ± 60 yr ago may suggest out-of-phase glacial advances occurred within the Cordillera Darwin relative to Patagonia. We speculate that a southward shift of westerlies and associated climate regimes toward the southernmost tip of the continent, about 900–800 yr ago, provides a mechanism by which some glaciers advanced in the Cordillera Darwin during what is generally considered a warm and dry period to the north in Patagonia.
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DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
A. Rebertus;T. Veblen
通讯作者:
T. Veblen
影响因子:
4
作者:
B. Hall;T. Lowell;G. Bromley;G. Denton;A. Putnam
通讯作者:
A. Putnam
影响因子:
2.3
作者:
S. C. Porter;M. Stuiver;C. Heusser
通讯作者:
C. Heusser
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
J. Kuylenstierna;G. Rosqvist;P. Holmlund
通讯作者:
P. Holmlund
影响因子:
5.3
作者:
Kaplan, Michael R.;Strelin, Jorge A.;Travis, Scott G.
通讯作者:
Travis, Scott G.