The Younger Dryas in the West Pacific marginal seas
The Younger Dryas in the West Pacific marginal seas
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DOI：
10.1360/yd1996-39-5-522
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发表时间：
1996-09
影响因子：
5.7
通讯作者：
Wang Pin-xian;Bian Yunhua;L. Baohua;Huang Chi-yu
中科院分区：
文献类型：
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作者：
Wang Pin-xian;Bian Yunhua;L. Baohua;Huang Chi-yu
根据15个沉积柱样资料，讨论了西太平洋边缘海新仙女木（YD）气候突变事件的发生和性质。在高分辨率地层学研究的所有岩心中都发现了这一事件，并证明这一事件在西太平洋地区是普遍存在的。同位素和微体古生物分析表明，YD的C-14年代为11000 - 10000 a B. P.，长江三角洲和日本海记录的YD的“表观回归”与YD是两个快速上升阶段之间的一个缓慢上升阶段的解释相一致。冬季表层水的冷却和YD的盐度增加意味着冬季风环流的加强，而不是夏季风环流。边缘海的这一重大气候事件必然对邻近大陆产生了深远的影响。
The occurrence and nature of the Younger Dryas (YD) abrupt climatic event in the West Pacific marginal seas are discussed on the basis of 15 sediment cores. This event has been found in all these cores studied with a high-resolution stratigraphy and proved to be common to the West Pacific region. As shown by the isotopic and micropaleontologic analyses, the YD, dated by C-14 at about 11000 to 10000 a B.P., is a brief event of sea surface cooling in winter season following a fresh-water pulse about 12000 a B.P. The "apparent regression" of the YD recorded in the Changjiang River delta and the Sea of Japan agrees with the interpretation that the YD is a period of slowed sea level rising between two phases of rapid rising. Both the winter surface water cooling and the increasing salinity in the YD imply a strengthening of the winter, but not summer monsoon circulation. This major climatic event in the marginal seas must have had profound impact on the adjacent continent.