Abrupt or gradual? Change point analysis of the late Pleistocene–Holocene climate record from Chew Bahir, southern Ethiopia
Abrupt or gradual? Change point analysis of the late Pleistocene–Holocene climate record from Chew Bahir, southern Ethiopia
复制标题
突然的还是渐进的?
DOI:
10.1017/qua.2018.30
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发表时间:
2018
影响因子:
2.3
通讯作者:
Schaebitz
中科院分区:
文献类型:
--
作者:
Trauth;Foerster;Junginger;Schaebitz
We used a change point analysis on a late Pleistocene–Holocene lake-sediment record from the Chew Bahir basin in the southern Ethiopian Rift to determine the amplitude and duration of past climate transitions. The most dramatic changes occurred over 240 yr (from ~15,700 to 15,460 yr) during the onset of the African Humid Period (AHP), and over 990 yr (from ~4875 to 3885 yr) during its protracted termination. The AHP was interrupted by a distinct dry period coinciding with the high-latitude Younger Dryas stadial, which had an abrupt onset (less than ~100 yr) at ~13,260 yr and lasted until ~11,730 yr. Wet-dry-wet transitions prior to the AHP may reflect the high-latitude Dansgaard-Oeschger cycles, as indicated by cross-correlation of the potassium record with the NorthGRIP ice core record between ~45–20 ka. These findings may contribute to the debates regarding the amplitude, and duration and mechanisms of past climate transitions, and their possible influence on the development of early modern human cultures.
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影响因子:
5.2
作者:
Y. Garcin
通讯作者:
Y. Garcin
影响因子:
4
作者:
Foerster, Verena;Vogelsang, Ralf;Trauth, Martin H.
通讯作者:
Trauth, Martin H.
影响因子:
1.8
作者:
E. Hildebrand;K. Grillo
通讯作者:
K. Grillo
影响因子:
2.2
作者:
Brandt, Steven A.;Fisher, Erich C.;Wang, Hong
通讯作者:
Wang, Hong
DOI:
10.4207/pa.2017.art104
发表时间:
2017
期刊:
Paleoanthropology
影响因子:
--
作者:
Christopher Campisano
通讯作者:
Christopher Campisano