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Crete Ice Core Data Readme

HIGH RESOLUTION O-18 and ACCUM FOR CENTRAL GREENLAND

Prepared by Dave Fisher, Nov. 30, 1994

These file names give the site name at Crete (ct), the year the core was drilled, the specific core (a-h) or pit, and the descriptions give the type of data, the sample interval, the accumulation rate (lambda), and a short code for easy identification (in parethesis).

CT84BPIT.CRT
CRETE SITE B 1984 PIT DELTA-18. 8/YR . SUMMER 1984 TO 1982 . LAMBDA=.287 M/YR. %. (CRETE84/SITEBPIT)

CT84B.CRT
CRETE SITE B 1984 DELTA-18. 8/YEAR. STARTS 1983 .GOES TO 1716 AD
%. LAMBDA=28.7 CM/YR ICE. (CRETE84/SITEB)
DRILLED IN SPRING OF 1985. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 5th VALUE IS WINTER 83/84.

L84BPIT .CRT
CRETE SITE-B PIT.1984. ACCUMULATION . AVERAGE LAMBDA=28.7 CM/YR ICE COMES OUT IN CM OF ICE. 1984-1982 AD. (CRETE84BPIT/L) FIRST VALUE IS WINTER TO SUMMER 1984 (ROUGHLY 1/2 YEAR)

L84B.CRT
CRETE SITE-B 1984. ACCUMULATION. AVERAGE LAMBDA=28.7 CM/YR ICE. STARTS 1983 -1716 AD . WINTER TO WINTER (CRETE84B/L)

CT84CPIT.CRT
CRETE SITE-C DELTA-18. DETAILED PIT. STARTS 1984.. 8/YR . LAMBDA=28.7 CM %. (CRETE84/SITECPIT) DRILLED IN SPRING OF 1984. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 5th VALUE IS WINTER 83/84.

CT84C.CRT
CRETE 1984 SITE-C. DELTA-18. 8/YR. STARTS 1983-1942 AD. LAMBDA=28.7 CM ICE %. (CRETE84/SITEC) DRILLED IN SPRING OF 1984. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 6th VALUE IS WINTER 83/84.

L84CPIT .CRT
CRETE 1984 SITE-C PIT. ACCUMULATION. STARTS 1984-1982 AD . LAMBDA=28.7 CM/YR ICE. (CRETE84CPIT/L) FIRST VALUE IS WINTER TO SUMMER 1984 (ROUGHLY 1/2 YEAR)

L84C.CRT
CRETE 1984 SITE-C ACCUMULATION. STARTS 1983-1942 AD. LAMBDA=28.7 CM/YR ICE . (L84C.CRT )

CT84DPIT.CRT
CRETE SITE-D 1984 DELTA-18. 8/YR . STARTS 1984-1981 AD. LAMBDA=28.7 CM/YR ICE EQIV. %. (CRETE84/SITEDPIT) DRILLED IN SPRING OF 1984. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 7th VALUE IS WINTER 83/84.

CT84D.CRT
CRETE SITE-D 1984 DELTA-18. 8/YR. STARTS 1983-1766 AD. LAMBDA=28.7 CM/YR ICE EQUIV. %. (CRETE84/SITED) DRILLED IN SPRING OF 1984. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 6th VALUE IS WINTER 83/84.

L84DPIT .CRT
CRETE SITE-D PIT ACCUMULATION. STARTS 1984-1981 AD. LAMBDA=28.7 CM/Y ICE EQUIV. %. (CRETE84DPIT/L) FIRST VALUE IS WINTER TO SUMMER 1984 (ROUGHLY 1/2 YEAR)

L84D.CRT
CRETE SITE-D 1984 ACCUMULATION. STARTS 1983-1766 AD. LAMBDA=28.7 CM/YR ICE EQUIV. %. (CRETE84D/L)

CT85APIT.CRT
CRETE SITE-A 1985 DELTA-18. 8/YR . STARTS 1985 AD 19 YRS. LAMBDA=28.7 CM/YR ICE EQUIV. %. (CRETE85/SITEAPIT) DRILLED IN SPRING OF 1985. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 6th VALUE IS WINTER 84/85.

CT85A.CRT
CRETE SITE-A 1985 DELTA-18. 1 YR AVES. STARTS 1984-1622 AD LAMBDA=28.7 CM/YR ICE EQUIV. %. (CRETE85/SITEA)

L85APIT .CRT
CRETE SITE-A 1985 . ICE PIT. ACCUMULATION . STARTS 1985 . LAMBDA=28.7 BASED ON DEL DETAILED SERIES. CM/YR ICE. (CRETE85APIT/L) FIRST VALUE IS WINTER TO SUMMER 1985 (ROUGHLY 1/2 YEAR)

L85A.CRT
CRETE SITE-A 1985 ACCUMULATION. STARTS 1984-1622 AD. AVE LAMBDA=28.7 CM/YR ICE . (CRETE85A/L)

CT85EPIT.CRT
CRETE SITE-E PIT 1985 DELTA-18. STARTS 1985-1979AD. 8/YR .LAMBDA=28.7 CM/YR ICE EQUIV. %. (CRETE85/siteEpit) DRILLED IN SPRING OF 1985. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 3RD VALUE IS WINTER 84/85.

CT85E.CRT
CRETE SITE-E 1985 DELTA-18. 8/YR. STARTS 1983-1721 AD . LAMBDA=28.7 CM/YR ICE EQUIV. %. (CRETE85/SITEE) DRILLED IN SPRING OF 1985. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 7th VALUE IS WINTER 83/84.

L85EPIT.CRT
CRETE SITE-E 1985 PIT. ACCUMULATION. . STARTS 1985-1949 AD CM/YR ICE. (CRETE85EPIT/L) FIRST VALUE IS WINTER TO SUMMER 1985 (ROUGHLY 1/2 YEAR)

L85E.CRT
CRETE SITE-E 1985 . ACCUMULATION.. STARTS 1983-1721 AD CM/YR ICE BASED ON DETAILED DEL CURVES. (CRETE85E/L)

CT85F.CRT
CRETE SITE-F 1985 DELTA-18. ANNUAL AVES DELTA-18. STARTS 1983-1924 AD %. BASED ON DETAILED DEL CURVES. (CRETE85F/L)

L85F.CRT
CRETE SITE-F 1985 . ACCUMULATION. CM/YR ICE . LAMBDA=28.7 CM/YR ICE STARTS 1983-1924 AD . (CRETE85F/L)

CT85G.CRT
CRETE SITE-G 1985 DELTA-18. 8/YR . STARTS 1984-1777 AD. LAMBDA=28.7 CM/YR ICE EQUIV. %. (CRETE85/SITEG) DRILLED IN SPRING OF 1985. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 3RD VALUE IS WINTER 84/85.

CT85GPIT.CRT
CRETE SITE-G PIT 1985 DELTA-18. 8/YR. STARTS 1985-1974 AD.LAMBDA=28.7 CM/YR ICE. (CRETE85/SITEGPIT)

L85GPIT .CRT
CRETE SITE-G PIT 1985 ACCUMULATION. STARTS 1985-1974 AD. LAMBDA=28.7 CM/YR ICE . (CRETE85GPIT/L) FIRST VALUE IS WINTER TO SUMMER 1985 (ROUGHLY 1/2 YEAR)

L85G.CRT
CRETE SITE-G 1985 ACCUMULATION. STARTS 1984-1777 AD. LAMBDA=28.7 CM/YR ICE. (CRETE85G/L)

CT85H.CRT
CRETE SITE-H 1985 DELTA-18 . 8/YR . STARTS 1984-1932 AD. LAMBDA=28.7 CM/YR ICE EQUIV. %. (CRETE85/SITEH) DRILLED IN SPRING OF 1985. APPROXIMATELY 8 SAMPLES PER YEAR, BUT VARIABLE. 3RD VALUE IS WINTER 84/85.

L85H.CRT
CRETE SITE-H 1985 . ACCUMULATION . CM/YR ICE . STARTS 1984-1932 AD BASED ON DETAILED DEL CURVES . (CRETE85H/L)

CT74SC.CRT
CRETE SWISS-CORE 1974 . DELTA-18 . 16/YR . STARTS 1973-1858 AD . %. LAMBDA=28.7 CM/YR ICE . (CRETE74-SCII/16)

L74SC.CRT
CRETE SWISS-CORE 1974. ACCUMULATION. STARTS 1973-1858 AD BASED ON DETAILED DEL CURVES. LAMBDA=28.7 CM/YR ICE. (CRETE74-SCII/16L)

CT74-12 .CRT
CRETE 1974 DELTA-18. 12/ YR . STARTS 1974-553 AD . LAMBDA=28.7 CM/YR ICE THE BIG ONE EH. %. 2.391666 CM AVES . (CRETE74/12) DRILLED IN SPRING OF 1975. APPROXIMATELY 12 SAMPLES PER YEAR, BUT VARIABLE. 2ND VALUE IS WINTER 74/75.

L74-12.CRT
CRETE 1974 CORE DELTA-18. ACCUMULATION . STARTS 1974-553 AD. LAMBDA=28.7 CM/ ICE EQUIV. BASED ON DETAILED DEL CURVE. CM/YR ICE. (CRETE74/12ACC) FIRST VALUE IS WINTER TO SUMMER 1975 (ROUGHLY 1/2 YEAR)

CT84B-1Y.CRT
CRETE SITE-B 1984 DELTA-18. 1 YR AVES. STARTS 1983-1716 AD. BASED ON DETAILED DEL CURVE. LAMBDA=28.7 CM/YR ICE. (CT84B-1Y)

CT84BP1Y.CRT
CRETE 1984 SITE-B DELTA-18. %. 1 YR AVES. STARTS 1984-1982 AD BASED ON DETAILED PIT. LAMBDA=28.7 CM/YR ICE . (CT84P1Y) FIRST VALUE IS WINTER TO SUMMER 1984 (ROUGHLY 1/2 YEAR)

CT84DP1Y.CRT
CRETE 1984 SITE-D DELTA-18. 1 YR AVES. STARTS 1984-1981 AD BASED ON DETAILED DEL CURVES. LAMBDA=28.7 CM/YR ICE. (CT84DP1Y) FIRST VALUE IS WINTER TO SUMMER 1984 (ROUGHLY 1/2 YEAR)

CT84D-1Y.CRT
CRETE SITE-D 1984 DELTA-18. 1 YR AVES. STARTS 1983-1766 AD BASED ON DETAILED DEL CURVES . LAMBDA=28.7 CM/YR ICE . (CT84D-1Y)

CT84CP1Y.CRT
CRETE SITE-C 1984 PIT DELTA-18 . 1 YR AVES. STARTS 1984-1982 AD BASED ON DETAILED DELS. LAMBDA=28.7 CM/YR ICE . (CT84CP1Y) FIRST VALUE IS WINTER TO SUMMER 1984 (ROUGHLY 1/2 YEAR)

CT84C-1Y.CRT
CRETE SITE-C 1984 DELTA-18 . 1 YR AVES. STARTS 1983-1942 AD BASED ON DETAILED DELS. %. LAMBDA=28.7 CM/YR ICE. (CT84C-1Y)

CT85AP1Y.CRT
CRETE SITE-A 1985 DELTA-18 . 1 YR AVES . STARTS 1985 . 19 YRS BASED ON DETAILED DEL CURVES. LAMBDA=28.7 CM/YR ICE . (CT85AP1Y) FIRST VALUE IS WINTER TO SUMMER 1985 (ROUGHLY 1/2 YEAR)

CT85EP1Y.CRT
CRETE SITE-E 1985 DELTA-18 . 1 YR AVES . STARTS 1985-1979 AD BASED ON DETAILED DEL CURVES . LAMBDA=28.7 CM/YR ICE . (CT85EP1Y) FIRST VALUE IS WINTER TO SUMMER 1985 (ROUGHLY 1/2 YEAR)

CT85E-1Y.CRT
CRETE SITE-E 1985 DELTA-18 . 1 YR AVES . STARTS 1983-1721 AD BASED ON DETAILED DEL CURVES . LAMBDA=28.7 CM/YR ICE . (CT85E-1Y)

CT85GP1Y.CRT
CRETE SITE-G 1985 DELTA-18 . 1 YR AVES . STARTS 1985-1974 AD BASED ON DETAILED DEL CURVES . LAMBDA=28.7 CM/YR ICE . (CT85GP1Y)

CT85G-1Y.CRT
CRETE SITE-G 1985 DELTA-18 . 1 YR AVES . STARTS 1984-1777 AD BASED ON DETAILED DEL CURVES . LAMBDA=28.7 CM/YR ICE .(CT85G-1Y) FIRST VALUE IS WINTER TO SUMMER 1995 (ROUGHLY 1/2 YEAR)

CT85H-1Y.CRT
CRETE SITE-H 1985 DELTA-18 . 1 YR AVES . STARTS 1984-1932 BASED ON DETAILED DEL CURVES . LAMBDA=28.7 CM/YR ICE . (CT85H-1Y) FIRST VALUE IS WINTER TO SUMMER 1985 (ROUGHLY 1/2 YEAR)

CT74-1Y.CRT
CRETE CORE 1974 DELTA-18 . 1 YR AVES . STARTS 1974-553 AD BASED ON DETAILED DEL CURVES . LAMBDA=28.7 CM/YR ICE . (CT74-1Y) FIRST VALUE IS WINTER TO SUMMER 1975 (ROUGHLY 1/2 YEAR - ONLY 2 VALUES USED TO CREATE AVERAGE)

CT74S-1Y.CRT
CRETE SWISS-CORE 1974 DELTA-18 . 1 YR AVES . STARTS 1973-1858 AD BASED ON DETAILED DEL CURVES . LAMBDA=28.7 CM/YR ICE . (CT74S-1Y)

CRT74-1Y.CRT
CRETE CORE 1974 DELTA-18 . 1 YR AVEA . 1 YR AVES STARTS 1974 JUST LEAD 400 VALUES OF LONGER CRETE-CORE FILE. (CRT74-1Y) FIRST VALUE IS WINTER TO SUMMER 1975 (ROUGHLY 1/2 YEAR - ONLY 2 VALUES USED TO CREATE AVERAGE)

LR74-12.CRT
CRETE CORE 1974 ACCUMULATION. STARTS 1974 AD. LAMBDA=27.8 CM/YR JUST LEAD 400 YRS OF LONGER CRETE ACCUM FILE. CM/YR ICE. (LR74-12) FIRST VALUE IS WINTER TO SUMMER 1975 (ROUGHLY 1/2 YEAR)

SUM74MC.SUM
SUMMIT 1974 DELTA-18 . 16/YR DETAIL. STARTS 1972 -1903 AD LAMBDA=25 CM/YR ICE . %. (CRETE74SUMMIT-MC/16) DRILLED IN SPRING OF 1975. APPROXIMATELY 16 SAMPLES PER YEAR, BUT VARIABLE. 4TH VALUE IS WINTER 72/73.

L74SUM.SUM
SUMMIT 1974 ACCUMULATION . 1 YR AVES . STARTS 1972-1903 AD . CM/YR ICE LAMBDA=25 CM/YR ICE . (CRETE74SUMMIT-MC/16L)

SUM74-1Y.SUM
SUMMIT 1974 DELTA-18 . 1 YR AVES . STARTS 1972 -1903 AD . BASED ON DETAILED DEL CURVE. LAMBDA=25 CM/YR ICE. (SUM74-1Y) FIRST VALUE IS WINTER TO SUMMER 1985 (ROUGHLY 1/2 YEAR - 4 VARIABLES ONLY)

REFERENCES:

Clausen, H.B., N.S. Gundestrup, S.J. Johnsen, R. Bindschadler, and J. Zwally (1988) "Glaciological Invetigations in the Crete Area, Ceneral Greenland: A Search for a New Deep-Drlling Site," Annals of Glaciology 10, International Glaciological Soceitey.

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