Dataset Open Access
Fryer, P.; Wheat, C.G.; Williams, T.; Albers, E.; Bekins, B.; Debret, B.P.R.; Deng, J.; Dong, Y.; Eickenbusch, P.; Frery, E.A.; Ichiyama, Y.; Johnson, K.; Johnston, R.M.; Kevorkian, R.T.; Kurz, W.; Magalhaes, V.; Mantovanelli, S.S.; Menapace, W.; Menzies, C.D.; Michibayashi, K.; Moyer, C.L.; Mullane, K.K.; Park, J.-W.; Price, R.E.; Ryan, J.G.; Shervais, J.W.; Sissmann, O.J.; Suzuki, S.; Takai, K.; Walter, B.; Zhang, R.
Gamma ray attenuation (GRA) data were acquired using a Cs-137 collimated source and a sodium iodide (thallium), or NaI(Tl), scintillation detector. The signal was calibrated using water and aluminum standards to provide a proxy for bulk density. This measurement was performed by a sensor mounted on either the Whole-Round Multisensor Logger (WRMSL) or the Special Task Multisensor Logger (STMSL); which track was used for a given data set is indicated in the data.