GISP2 14-C (radiocarbon) measurements (Table 3).					

REFERENCES:					

Lal, D., A.J.T. Jull, G.S. Burr, and D.J. Donahue. 1997. Measurements of in
situ 14C concentrations in Greenland Ice Sheet Project 2 ice covering a 17
kyr time span: Implications to ice flow dynamics. Journal of Geophysical
Research 102:26505-26510.

DATA DESCRIPTION:					

This file contains calculated accumulation rates from 14C data (Table 3 in
Lal and Jull (1997) compared with glaciological flow-model estimates
(Cutler et al., 1995).

Depth: Mean sample depth in meters.	
Age:   Approximate age of ice in years.	
Fraction:  Approximate fraction 14C from in-situ production during storage.	
Constant:  Accumulation rates are model estimates of Cutler et al. (1995). Constant thickness.	
Variable:  Accumulation rates are model estimates of Cutler et al. (1995). Variable thickness.	
Accumulation: Accumulation rates (cm/yr) required to correspond to measured in-situ 14C.	

DATA:					

Depth	Age	Fraction	Constant	Variable	Accumulation	+/-

125.8	375	0.12	25.4	25.3	27.1	1.7
126.2	375	0.12	25.4	25.3	29.5	2.6
1518.5	9470	0.13	22.6	20.5	7.8	1.4
1623.4	10770	0.24	19.2	16.5	16.1	1.7
1698.5	12390	0.29	7.97	6.67	16.6	2.2
1749.4	13750	0.29	15	12.4	14	2.0
1837.4	16200	0.26	8.8	7	8.3	1.0