(Table 1) Helium and Thorium 230 excess concentrations in sediment cores B18 ...
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At four sites in the central equatorial Pacific Ocean the flux of extraterrestrial 3He, determined using the excess 230Th profiling method, is 8 * 10-13 cm3 STP/cm**2/ka. This...
在赤道中太平洋的四个观测站点,采用过剩钍-230(excess ²³⁰Th)剖面法测定得到的地外氦-3(extraterrestrial ³He)通量为8×10⁻¹³ 标准温度压力(STP)立方厘米/平方厘米/千年(ka)。此……



