Lake-level changes during the past 100,000 years at Lake Baikal, southern Siberia
Lake-level changes during the past 100,000 years at Lake Baikal, southern Siberia
复制标题
DOI：
10.1016/j.yqres.2004.06.002
复制
发表时间：
2004-09
影响因子：
2.3
通讯作者：
A. Urabe;M. Tateishi;Y. Inouchi;H. Matsuoka;Takahiko Inoue;Alexsander Dmytriev;O. Khlystov
中科院分区：
文献类型：
--
作者：
A. Urabe;M. Tateishi;Y. Inouchi;H. Matsuoka;Takahiko Inoue;Alexsander Dmytriev;O. Khlystov
从地震测量和塞林加河三角洲附近贝加尔湖底部岩芯取样推断的湖平面变化可用于约束区域气候历史，并与海洋氧同位素阶段（MIS）代表的全球气候变化相关。反射模式和同位素阶段的相关性表明，三角洲的顶置和前积沉积物形成于稳定的湖平面和温暖的气候条件下。暖期湖面高，冷期湖面低。从MIS 5到MIS 4，由于冷却导致的湖平面下降估计为33-38米;从MIS 3到MIS 2，它又下降了11-15米。由于湖平面主要受蒸发和河流输入的控制，我们推断，在温暖的阶段，更多的水供应给贝加尔湖。
Lake-level changes inferred from seismic surveying and core sampling of the floor of Lake Baikal near the Selenga River delta can be used to constrain regional climatic history and appear to be correlated to global climate changes represented by marine oxygen isotope stages (MIS). The reflection pattern and correlation to the isotope stages indicate that the topset and progradational foreset sediments of the deltas formed during periods of stable lake levels and warm climatic conditions. During warm stages, the lake level was high, and during cold stages it was low. The drop in the lake level due to cooling from MIS 5 through MIS 4 is estimated to be 33–38 m; from MIS 3 through MIS 2, it fell an additional 11–15 m. Because the lake level is chiefly controlled by evaporation and river input, we infer that more water was supplied to Lake Baikal during warm stages.