title: Helium flux from a sedimentary basin.
abstract: The tritium-3He ages of groundwaters collected from the Saijo Basin in Japan were measured. The ages vary between 11.7 and 16.3 years. The 4He flux of >3 x 10(4) atoms/cm2 s is calculated by the 4He concentrations and ages. In addition the helium flux of 8.3 x 10(5) atoms/cm2 s is calculated at the Higashi-Niigata gas field in Japan. The above two estimates are consistent with the continental helium flux reported in the literature, suggesting that helium flux on the Earth's crust is uniform.
authors.affiliation: Department of Earth and Planetary Sciences, Hiroshima University, Kagamiyama, Higashi Hiroshima, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Takahata
authors.forename: Y
authors.initials: Y
authors.lastname: Sano
mesh_terms: D019015:Geologic Sediments; D005844:Geology / Q000379:methods; D006371:Helium / Q000032:analysis*; D007554:Isotopes; D007564:Japan; D014316:Tritium / Q000032:analysis; D014867:Water / Q000032:analysis*
chemical_list: D007554:Isotopes; D014867:Water; D014316:Tritium; D006371:Helium