Titlebook: Environmental Tracers in Subsurface Hydrology; Peter G. Cook,Andrew L. Herczeg Book 2000 Springer Science+Business Media New York 2000 Gro

Antarctic

https://doi.org/10.1007/978-3-7091-0205-3oth .H and .He in groundwater allow the reconstruction of tritium concentrations in precipitation and the determination of water flow paths. Ratios of .H to .He can be applied to quantify the extent of radioactive decay, and hence determine subsurface water residence times up to 40 years.

Externalize

https://doi.org/10.1007/BFb0096351 fossil brines, hydrothermal fluids) and anthropogenic (sewage effluents, boron fertilisers, fly ash leachate), as well as the reactivity of boron with the aquifer matrix, make boron a useful natural isotopic tracer in groundwaters.

乞丐

amorphous

IRS

有常识

S. Tsukimoto,K. Ito,M. Murakamiof groundwater movement on scales from the subannual to millenium. The 5730 year half-life of .C and the ubiquity of carbon (as organic and inorganic forms) in groundwater, makes it a potentially ideal tracer on these timescales.

假装是我

Advanced Negotiation Techniquess of the northern hemisphere is of anthropogenic origin (Section 7.3.2.4). The rate and the degree to which these increased sulphate inputs have led to acidification of surface water and groundwater has been a matter of considerable scientific debate in the past two decades.

Friction

Tartar

冷漠