Tritiogenic 3He in shallow groundwater

Details Tritiogenic 3He in shallow groundwater Tritiogenic 3He in shallow groundwater

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989e%26psl..94..245s&link_type=abstract

Earth and Planetary Science Letters, Volume 94, Issue 3-4, p. 245-256.

Computer Science

42

Scientific paper

Tritium, helium isotope and neon data from a multi-level sampling well (DFG 7) at Liedern/Bocholt (West Germany) are presented and discussed. The presence of a radiogenic helium component leads to 3He/4He ratios below that of atmospheric helium (minimum δ3He values ~ -60%) below about 20 m depth. The 3He profile can be corrected for the nucleogenic 3He component using the neon measurements. Based on the ``Vogel'' model of a shallow aquifer the tritium/3He distributions are simulated for the years 1987, 2000 and 2025. The model results show that under favourable conditions the tritiogenic 3He peak will be detectable in shallow aquifers for at least the next 4 decades. The influence of the vertical flow velocity and the transversal dispersion coefficient on simulated distributions are estimated. 3He confinement is calculated as a function of the vertical flow velocity and the transversal dispersion coefficient. There is a critical value of the vertical flow velocity (about 0.25-0.5 m/year) below which the 3He loss increases rapidly to high values.

Affiliated with

Also associated with

No associations

Rating

Tritiogenic 3He in shallow groundwater does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Tritiogenic 3He in shallow groundwater, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tritiogenic 3He in shallow groundwater will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-764627