搜索结果: 1-4 共查到“地球化学 seawater”相关记录4条 . 查询时间(0.078 秒)
Spatial variations of 226Ra, 228Ra, and 228Th activities in seawater from the eastern East China Sea
radium isotopes thorium isotopes East China Sea shelf currents seasonal variation water mixing scavenging
2017/4/11
A total of 74 surface and subsurface water samples at depths shallower than 200 m were collected in the eastern East
China Sea (ECS), and spatial and seasonal variations in 226Ra, 228Ra, and 228Th ac...
Helium isotopes of seawater in the Philippine Sea and the western North Pacific
3He/4He ratios abyssal current Philippine Sea North Pacific seawater
2017/8/9
We measured helium isotopic ratios of 84 seawater samples from various depths collected in the western North Pacific Ocean and the western Philippine Sea. The 3He/4He ratios varied significantly from ...
Testing seawater Sr isotopic variability on a glacial-interglacial timescale: An application of latest high-precision thermal ionization mass spectrometry
TIMS Sr isotopes seawater glacial-interglacial cycle
2017/8/9
Stability in seawater 87Sr/86Sr ratios over a glacial-interglacial timescale has gained the consensus, yet inter-site inconsistency exists in the previous data employed for validation of this issue. T...
A normalised seawater strontium isotope curve and the Neoproterozoic-Cambrian chemical weathering event
normalised seawater strontium isotope curve chemical weathering event
2009/10/22
The strontium isotope composition of seawater has varied over geological time in response to changes in the rates of continental weathering relative to ocean crust alteration. However, the potential o...