Amundsen Sea sediment drifts: Archives of modifications in oceanographic and climatic conditions
Amundsen Sea sediment drifts: Archives of modifications in oceanographic and climatic conditions
复制标题
阿蒙森海沉积物漂移：海洋和气候条件变化的档案
DOI：
10.1016/j.margeo.2011.12.007
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发表时间：
2012
期刊：
影响因子：
2.9
通讯作者：
K. Gohl
中科院分区：
文献类型：
--
作者：
G. Uenzelmann‐Neben;K. Gohl
漂流沉积记录了特定的动力底流和相关的沉积搬运活动的阶段。对南太平洋阿蒙森海地震反射资料的分析表明，始新世/渐新世已形成沉积物漂移。这一观测表明，在一个受起源于罗斯海的南极底层水(AABW)影响的地区，晚古近纪的底流活动，因此是寒冷的气候。沉积物漂移的产生伴随着物质输运沉积的发生，导致了一个强烈的冰盖扩张阶段(15-4 Ma)，这是由于冰情从湿式向干式转变而导致的，在最后的~4 Ma期间物质输入较少。
Drift deposits document stages of particular dynamic bottom-currents and associated sedimentary transport activities. The analysis of seismic reflection data from the Amundsen Sea, southern Pacific Ocean, reveals sediment drift formation already in Eocene/Oligocene times. This observation indicates bottom current activity and hence a cold climate for the late Palaeogene in an area, which today lies under the influence of Antarctic Bottom Water (AABW) originating in the Ross Sea. The generation of sediment drifts is accompanied by the occurrence of mass transport deposits leading to the identification of a phase of strong ice sheet expansion (15–4Ma), which due to a change in ice regime from wet- to dry-based was followed by less material input during the last ~4Ma.
影响因子：
64.8
作者：
Naish, T.;Powell, R.;Williams, T.
通讯作者：
Williams, T.