A 4-Ma record of thermal evolution in the tropical western Pacific and its implications on climate change
A 4-Ma record of thermal evolution in the tropical western Pacific and its implications on climate change
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热带西太平洋4Ma热演化记录及其对气候变化的影响
DOI：
10.1016/j.epsl.2011.04.016
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发表时间：
2011-09
影响因子：
5.3
通讯作者：
Zhonghui Liu
中科院分区：
文献类型：
--
作者：
Li Li;Qianyu Li;Jun Tian;Pinxian Wang;Hui Wang;Zhonghui Liu
利用烯酮古温度计重建了热带西太平洋ODP 1143站4 Ma以来的轨道分辨率热历史。温度分布的特点是在2.7Ma之前稳定在~29°C，波动<1°C，从2.7Ma开始出现强烈的振荡状态，这主要是由于从间冰期的~29°C到冰期的26°C冷却了4°C。这意味着在上新世早期和中期，该地区的相对温暖和稳定的表面水文在温度下降之前的暖池的影响，以响应全球变冷和自上新世晚期以来的不同的冰川阶段的形成。因此，在上新世晚期之前热带东西太平洋和南海南北北方之间较小的SST梯度表明存在一个超大型的上新世太平洋暖池，而此后较大的SST梯度则标志着代表该区域季风环流的纬向步行者环流和纬向Hadley环流的逐渐加强。热带太平洋上空步行者和哈德利环流的加强也可能有助于上新世晚期和更新世期间冰川的开始和随后的冰消。
Orbital resolution thermal histories over the last 4Ma at ODP Site 1143 in the tropical western Pacific are reconstructed using alkenone paleothermometry. The temperature profile is characterized by a steady state of ~29°C with fluctuations <1°C before 2.7Ma and by a strong oscillating state from 2.7Ma, largely due to cooling by up to 4°C from ~29°C in interglacial to 26°C in glacial intervals. This implies a relative warm and stable surface hydrography during the early and mid Pliocene in this region influenced by the warm pool before temperature decreases in responding to global cooling and the formation of the distinct glacial stages since the late Pliocene. Therefore, the smaller SST gradient between tropical eastern and western Pacific and between southern and northern South China Sea before the late Pliocene indicates a super sized Pliocene Pacific warm pool, while the larger SST gradient since then marks progressively intensification of the zonal Walker circulation and meridional Hadley circulation, representing the monsoon circulations in the region. The intensification of the Walker and Hadley circulations over the tropical Pacific may also have helped on the onset of glaciations and subsequent deglaciations during the late Pliocene and Pleistocene.
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影响因子：
--
作者：
Jun Tian;Pinxian Wang;Ronghua Chen;Xinrong Cheng
通讯作者：
Jun Tian;Pinxian Wang;Ronghua Chen;Xinrong Cheng
影响因子：
--
作者：
Dekens, Petra S.;Ravelo, Ana Christina;McCarthy, Matthew D.
通讯作者：
McCarthy, Matthew D.
影响因子：
56.9
作者：
M. Wara;A. Ravelo;M. Delaney
通讯作者：
M. Wara;A. Ravelo;M. Delaney
DOI：
10.1016/s0921-8181(00)00028-x
发表时间：
2000-08
期刊：
--
影响因子：
--
作者：
A. Haywood;P. Valdes;B. Sellwood
通讯作者：
A. Haywood;P. Valdes;B. Sellwood
影响因子：
3.7
作者：
E. Bard
通讯作者：
E. Bard