# Ra isotopes in groundwater wells. # W. Burnett and B. Mortazavi, PIs # The R denotes duplicate samples. # A, B and corr denote samples that were collected by two Mn-fibers # put in series and the final results corrected for the recovery. # Uncertainties given are +-1 sigma based on counting statistics. # B.D. = below detection. Low yields on some of the shallow wells # were a result of reducing groundwaters attaching the MnO2 fibers. ========================= date_local year yrday_local ------------------------- 21-May-12 2012 142 ========================= site lon lat temp sal Ra223 err_Ra223 Ra224 err_Ra224 Ra226 err_Ra226 Ra228 Ra228_err Yield ------------------------- TW1A -87.693 30.255 23.6 4.05 7.9 0.89 59.3 1.11 34.5 0.23 43.9 3.17 85.7 TW1B -87.693 30.255 23.6 4.05 1.21 0.33 8.35 0.47 5 0.1 4.5 1.89 nd TW1corr -87.693 30.255 23.6 4.05 9.22 1.04 69.2 1.3 40.3 0.27 51.2 3.7 nd TW2A -87.689 30.261 22.9 0.1 0.57 0.13 4.01 0.33 2.36 0.03 2.93 1.51 92.4 TW2B -87.689 30.261 22.9 0.1 0.45 0.15 15 0.68 0.18 0.02 B.D. B.D. nd TW2corr -87.689 30.261 22.9 0.1 0.62 0.14 4.34 0.36 2.55 0.03 3.17 1.63 nd TW3A -87.67 30.255 22.2 2.99 9.8 1.16 131 1.99 31.2 0.16 28.3 3.04 61.9 TW3B -87.67 30.255 22.2 2.99 1.41 0.27 15.2 0.86 11.9 0.06 15 2.74 nd TW3corr -87.67 30.255 22.2 2.99 15.8 1.87 212 3.22 50.5 0.26 45.7 4.91 nd TW4A -87.678 30.256 21.1 9.63 13.1 1.4 147 2.72 100 0.99 43.9 3.3 negative TW4B -87.678 30.256 21.1 9.63 15.2 1.47 61.7 1.51 127 1.02 53 3.88 nd TW4corr -87.678 30.256 21.1 9.63 - - - - - - - - nd