Helium isotopes in South Pacific deep seawater
Helium isotopes in South Pacific deep seawater
复制标题
南太平洋深层海水中的氦同位素
DOI：
10.2343/geochemj.29.377
复制
发表时间：
1995
影响因子：
0.8
通讯作者：
T. Gamo
中科院分区：
文献类型：
--
作者：
Y. Sano;N. Takahata;T. Gamo
我们在日本东京大学的KH-92-4号考察船上测量了位于所罗门海（6°38'S，153° 38 'E）的SA-6站和位于珊瑚海中央海盆（14°16'S，154° 19' E）的SA-7站的19个不同深度的南太平洋水样中的~ 3 He/~ 4 He和~ 4 He/~（20）Ne比值以及~ 4 He浓度。3 He/4 He和4 He/20 Ne比值分别在0.988 ~ 1.276 Ratm和0.254 ~ 0.292之间变化。在约2000米深处发现了一个广泛的富含~ 3 He的水柱。根据Geosecs和South Tow考察的~ 3 He/~ 4 He数据，在东太平洋海隆以西约5000公里处可追踪到25%的~ 3 He羽流。在SA-6和SA-7观测到的25%的过剩~ 3 He羽流可能与海岭无关，这表明研究区存在另一个幔源氦源。
We have measured 3He/4He and 4He/20Ne ratios and 4He concentrations in 19 South Pacific water samples with various depths from station SA-6 located in the Solomon Sea (6°38'S, 153°38'E) and SA-7 in the central Coral Sea Basin (14°16'S, 154°19'E) on the KH-92-4 cruise of the Research Vessel, Hakuho Maru of the University of Tokyo. The 3He/4He and 4He/20Ne ratios vary significantly from 0.988 Ratm to 1.276 Ratm and from 0.254 to 0.292, respectively. An extensive plume of water enriched in 3He has been discovered at a depth of about 2000 meter. Taking 3He/4He data of the Geosecs and the South Tow expeditions, 25% excess 3He plume can be traced over 5000 kilometers to the west of the East Pacific Rise. Observed 25% excess 3He plume at SA-6 and 7 may be independent from the ridge, which suggests that there is another source of the mantle derived helium in the area studied.
影响因子：
4
作者：
SANO, Y;WAKITA, H
通讯作者：
WAKITA, H