Intermediate water formation in the Bering Sea during glacial periods: Evidence from neodymium isotope ratios
Intermediate water formation in the Bering Sea during glacial periods: Evidence from neodymium isotope ratios
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DOI：
10.1130/g30225.1
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发表时间：
2010-05-01
期刊：
影响因子：
5.8
通讯作者：
Okazaki, Yusuke
中科院分区：
文献类型：
--
作者：
Horikawa, Keiji;Asahara, Yoshihiro;Okazaki, Yusuke
翻转环流通量和位置的变化可能对海洋生态系统和海洋与大气之间的CO2交换产生重大影响。然而，与大西洋不同的是，人们对北太平洋冰川边界条件下的海洋环流和通风知之甚少，特别是中层水环流。在这里，我们提出了新的记录钕（Nd）同位素（Nd）在白令海沉积物（884米水深）的铁锰羟基氧化物。我们发现，在寒冷时期的放射成因值（高达+0.8（Nd））和相对较小的放射成因值（
Changes in the flux and location of overturning circulation may have large effects on marine ecosystems and CO2 exchange between the ocean and atmosphere. However, unlike the Atlantic, little is known about ocean circulation and ventilation under glacial boundary conditions in the North Pacific, especially in regard to intermediate water circulation. Here we present new records of neodymium (Nd) isotopes (epsilon(Nd)) in Fe-Mn oxyhydroxides of Bering Sea sediments (884 m water depth). We found a systematic variation between radiogenic values (up to +0.8 epsilon(Nd)) during cold periods and relatively less radiogenic values (