Deglacial dysoxic events on 100 to 200 years cycle revealed by high resolution analysis of benthic foraminiferal assemblages in core MD01-2409 collected from off Shimokita Peninsula
Deglacial dysoxic events on 100 to 200 years cycle revealed by high resolution analysis of benthic foraminiferal assemblages in core MD01-2409 collected from off Shimokita Peninsula
复制标题
通过对从下北半岛附近采集的 MD01-2409 岩芯中的底栖有孔虫组合进行高分辨率分析，揭示了 100 至 200 年周期的冰消缺氧事件
DOI：
10.5575/geosoc.112.166
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Takashi Ito
中科院分区：
文献类型：
--
作者：
A. Shibahara;E. Arayama;K. Ohkushi;K. Aoki;Takashi Ito
摘要/ Abstract摘要：研究了下基塔半岛975 m海域MD01-2409岩心底栖有孔虫（BF）组合，以重建末次冰期日本北部地区底水氧合变化。优势类群丰度的变化反映了海底溶解氧条件百年来的变化。BF组合可分为氧、亚氧和欠氧三类。冰期高炉组合表现出100 ~ 200年周期的缺氧事件。
Abstract: Benthic foraminiferal (BF) assemblages in core MD01-2409 collected from a water depth of 975 m off Shimokita Peninsula were investigated to reconstruct bottom water oxygenation changes around north Japan during the last deglaciation. Abundance changes in dominant taxa indicate centennial changes in dissolved oxygen condition on the seafloor. The BF assemblages were classified into three groups: oxic, suboxic, and dysoxic taxa. The deglacial BF assemblages show dysoxic events on 100−200 year cycle.