GISP2 14-C (radiocarbon) measurements (Table 2) ...

• Main Author: Lal, D
• Format: Dataset
• Language: English
• Published: PANGAEA 2001
• Subjects: DEPTH, ice/snow; AGE; Carbon-14 concentration; Carbon-14 concentration, standard deviation; -; Drilling/drill rig; Gamma-ray spectrometry; GISP; Sampling/drilling ice; Greenland Ice Core Projects GRIP/GISP/NGRIP; Greenland; Greenland ice core; GRIP; ice core; NGRIP
• Online Access: https://dx.doi.org/10.1594/pangaea.60022; https://doi.pangaea.de/10.1594/PANGAEA.60022

Expected in-situ 14C is based on 14C production rate at surface for the present altitude (3.2 km), 200 atoms 14C/g ice/y (Jull et al., 1994), and model ice accumulation rates estimated by Cutler et al. (1995). The estimates are in-situ cosmogenic 14C (i.e. excluding trapped 14C). For total - trapped CO2, the amount of trapped 14CO2 is estimated from the amount of air in the ice (tab1) and assuming 250 ppm CO2 in air. ...