GISP Summit Ice Core Data: Readme file
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			World Data Center A - Paleoclimatology
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NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!!


NAME OF DATA SET: GISP Summit Ice Core Data
CONTRIBUTORS: David Fisher

SUGGESTED DATA CITATION: Fisher, D., GISP Summit Ice Core Data.
International Ice Core Data Cooperative,
IGBP Pages/World Data Center-A for Paleoclimatology
NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.

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

Langway, C.C., Jr., H. Oeschger, and W. Dansgaard (eds.), 1985. 
Greenland ice core: Geophysics, geochemistry and environment: 
Geophysical Monographs, v. 33, American Geophysics Union, Washington D.C. 


LAST UPDATE: 1998 (Original receipt by International Ice Core Data Cooperative)
GEOGRAPHIC REGION: Greenland

LIST OF FILES: readme_gisp-summit.txt (this file), 
SUM74MC, L74SUM, SUM74-1Y.

DESCRIPTION:
HIGH RESOLUTION O-18 & ACCUM FOR CENTRAL GREENLAND (SUMMIT 1974)

Prepared by Dave Fisher, Nov. 30, 1994        

SUM74MC                           

SUMMIT 1974  DELTA-18 . 16/YR DETAILED. 
THE DATA SPANS A TIMEFRAME FROM 1972 -1903 AD.                  
ACCUMULATION=25 CM/YR ICE EQUIVALENT           
THE CORE WAS DRILLED IN THE SPRING OF 1975.  
THERE ARE APPROXIMATELY 16 SAMPLES PER YEAR, BUT    
VARIABLE.  THE 4TH VALUE IS WINTER 72/73.

L74SUM

SUMMIT 1974  ACCUMULATION DATA. 1 YR AVESERAGES.
THE DATA SPANS A TIMEFRAME FROM 1972-1903 AD .      
ACCUMULATION (LAMBDA)=25 CM/YR ICE .     

SUM74-1Y              

SUMMIT 1974  DELTA-18 1 YR AVERAGES.
THE DATA SPANS A TIMEFRAME FROM 1972 -1903 AD
WHICH IS BASED ON THE DETAILED DEL CURVE. 
ACCUMULATION (LAMBDA)=25 CM/YR ICE.                    
THE FIRST VALUE IS WINTER TO SUMMER 1985 (ROUGHLY 1/2 YEAR - 4 
VARIABLES ONLY).

SUMMIT 1974 DETAILED DELTA 18-O

REFERENCES:

Langway, C.C., Jr., H. Oeschger, and W. Dansgaard (eds.), 1985. Greenland ice core:  Geophysics, geochemistry and environment:  Geophysical Monographs, v. 33, American
Geophysics Union, Washington D.C.

DATA DESCRIPTION:

# FILE: sum74mc.sum
# Summit 1974 delta 18-O with 16 samples per year (detailed) from 1972 to 1903 AD.
# Lambda (accumulation) is 25 cm/year ice equivalent.
# Core drilled in the spring of 1975, and the fourth value is the winter of 1972/73.
# Columns: delta 18-O (per mil).

DATA:

-35.36
-36.86
-38.25
-38.41
-37.59
-37.07
-36.93
-37.69
-40.53
-41.54
-40.64
-40.09
-37.89
-34.66
-30.56
-27.31
-25.91
-26.58
-28.94
-31.63
-33.44
-35.32
-36.53
-37.61
-38.03
-38.52
-38.48
-37.8
-35.97
-33.84
-31.48
-29.89
-30.12
-31.08
-33.15
-33.51
-37.23
-38.29
-38.65
-38.49
-38.32
-38.28
-38.54
-38.21
-37.14
-35.97
-35.02
-34.06
-32.31
-32
-33.32
-35.33
-37.56
-39.81
-41.39
-41.5
-40.7
-39.11
-38.18
-37.4
-36.01
-34.54
-32.98
-31.56
-30.89
-30.35
-29.93
-30.17
-30.97
-32.11
-32.49
-32.95
-37.27
-38.53
-39.2
-39.42
-39.11
-38.33
-37.06
-35.67
-34.42
-33.31
-32.35
-32.46
-33.35
-35.04
-37.15
-38.96
-40.43
-41.25
-41.38
-40.54
-38.33
-36.36
-34.87
-33.72
-32.38
-32.76
-34.14
-35.78
-36.99
-37.11
-36.49
-35.56
-34.35
-32.7
-30.88
-29.54
-29.1
-29.32
-31.43
-33
-33.09
-33.77
-33.59
-34.57
-35.79
-36.67
-36.7
-36.52
-36.24
-36.24
-35.91
-34.97
-33.42
-32.34
-31.36
-31.13
-31.68
-32.94
-34.43
-35.43
-35.87
-36.18
-36.74
-37.27
-37.63
-37.53
-36.61
-35.56
-34.46
-33.82
-33.15
-32.16
-31.29
-31.07
-32.31
-33.28
-34.01
-34.61
-34.56
-36.25
-36.83
-36.54
-35.85
-34.96
-33.74
-32.16
-31.08
-30.63
-30.95
-31.73
-33.03
-35.35
-37.34
-38.35
-38.21
-37.22
-35.73
-33.92
-32.53
-31.45
-30.64
-30.53
-30.62
-31.2
-32.11
-33.4
-35.35
-37.1
-38.08
-38.22
-37.69
-37.31
-36.37
-34.93
-33.78
-32.81
-32.39
-32.85
-34.01
-35.45
-36.83
-37.61
-37.89
-37.7
-37.45
-37.39
-37.44
-37.08
-36.39
-35.44
-34.59
-33.77
-33.02
-32.64
-32.17
-32.56
-33.58
-35.1
-36.61
-37.77
-38.37
-38.55
-38.41
-37.73
-37.07
-36.39
-35.18
-34.11
-33.19
-32.25
-31.5
-31.22
-31.46
-32.22
-32.95
-33.46
-34.39
-34.43
-34.89
-35.45
-36.4
-36.89
-37.68
-37.95
-37.77
-37.15
-36.25
-34.87
-33.8
-32.79
-32.27
-32.23
-32.4
-32.66
-33.07
-33.57
-34.1
-34.96
-35.45
-35.68
-35.62
-35.62
-35.32
-34.63
-33.91
-33.57
-33.77
-34.2
-35.14
-36.1
-36.7
-37.14
-37.74
-37.7
-37.58
-37.15
-36.36
-35.74
-35.29
-34.64
-34.89
-35.26
-35.8
-36.21
-36.53
-36.67
-36.5
-36.27
-36.13
-36.09
-36.3
-37.06
-37.54
-37.78
-37.76
-36.73
-35.88
-34.48
-33.27
-32.17
-30.85
-30.53
-30.86
-31.34
-32.25
-33.13
-33.98
-34.44
-34.78
-35.4
-36.05
-36.67
-36.8
-36.53
-36.1
-35.17
-34.16
-33.39
-32.71
-32.58
-32.78
-33.38
-34.17
-35.17
-36.25
-37.01
-37.58
-37.56
-37.6
-37.13
-36.58
-35.93
-35.35
-34.92
-34.6
-34.06
-33.36
-32.86
-32.56
-32.42
-32.81
-34.04
-35.38
-36.7
-38.12
-38.93
-39.31
-38.86
-37.71
-36.46
-34.92
-33.8
-32.77
-32.92
-33.32
-34.09
-35.38
-36.55
-37.61
-38.58
-38.8
-38.65
-38.58
-37.91
-36.97
-35.73
-34.58
-33.47
-32.63
-32.49
-32.81
-33.71
-34.68
-35.46
-36.21
-36.8
-37.19
-36.85
-36.86
-36.58
-36.09
-35.81
-35.11
-34.62
-34.48
-34.66
-35.2
-35.71
-36.54
-37.07
-37.08
-37.19
-37.12
-36.86
-36.6
-36.12
-35.45
-34.83
-34.31
-34.03
-34.04
-34.58
-34.75
-35.23
-36.04
-36.34
-36.33
-35.97
-35.33
-34.33
-33.74
-33.04
-32.54
-31.87
-31.39
-31.14
-30.9
-31.02
-31.28
-31.73
-32.45
-33.18
-34.29
-35.01
-35.41
-35.93
-35.92
-35.6
-34.89
-34.17
-33.36
-32.88
-32.37
-32.1
-31.8
-31.54
-31.41
-31.63
-31.98
-32.5
-33.3
-34.05
-34.59
-34.81
-34.66
-34.41
-33.92
-33.73
-33.49
-33.34
-33.62
-33.61
-33.61
-33.63
-33.13
-32.57
-31.93
-31.4
-31.03
-31
-31.46
-32.12
-33.01
-34.24
-35.53
-36.87
-37.9
-38.59
-38.83
-38.31
-37.35
-36.18
-34.73
-33.39
-32.57
-31.93
-31.77
-32.16
-32.86
-33.66
-34.7
-35.73
-36.57
-37.34
-37.86
-37.95
-38.02
-37.75
-37.24
-36.16
-35.72
-35.5
-35.65
-36.06
-36.66
-37.13
-37.56
-37.57
-37.36
-37.17
-36.72
-36.16
-35.43
-34.49
-33.62
-32.98
-32.31
-31.92
-32.05
-32.11
-32.47
-33.23
-33.66
-34.2
-34.64
-34.94
-35.28
-35.43
-35.23
-35.11
-34.47
-33.96
-33.43
-33.25
-33.26
-33.43
-34.05
-34.84
-35.71
-36.69
-37.49
-37.97
-38.37
-38.21
-38.14
-37.44
-36.87
-35.98
-35.03
-34.09
-33.54
-33.15
-33.24
-33.75
-34.35
-35.13
-35.92
-36.37
-36.78
-36.54
-36.58
-36.38
-36.13
-35.88
-35.06
-34.39
-33.85
-33.26
-32.84
-32.55
-32.45
-32.81
-33.2
-34
-34.76
-35.64
-36.43
-37.17
-37.65
-38
-38.03
-37.92
-37.7
-37.34
-36.82
-36.27
-35.47
-35.2
-34.87
-34.64
-34.66
-34.64
-35.13
-35.45
-35.92
-36.4
-36.84
-37.19
-37.38
-37.53
-37.42
-37.06
-36.74
-36.28
-35.96
-35.8
-35.95
-36.17
-37.31
-38.27
-39.13
-39.94
-40.32
-40.45
-40.08
-39.46
-38.52
-37.29
-36.03
-34.7
-33.47
-32.6
-32.06
-31.91
-32.15
-32.62
-33.6
-34.42
-35.36
-36.19
-36.67
-36.76
-36.66
-36.32
-35.86
-35.3
-35.24
-35.39
-35.82
-36.4
-36.21
-37.68
-37.72
-37.51
-37.43
-36.71
-36.24
-35.63
-35.1
-34.42
-33.7
-33.1
-32.63
-32.66
-32.57
-32.74
-33.55
-34.14
-34.96
-35.52
-35.75
-35.67
-35.41
-35.01
-34.56
-34.26
-33.68
-32.87
-32.65
-32.36
-32.03
-31.74
-31.48
-31.75
-32.26
-33.08
-34.89
-36.2
-35.93
-36.17
-37.14
-37.24
-37.07
-36.38
-35.5
-34.62
-33.4
-32.4
-31.52
-30.78
-30.34
-30.1
-30.18
-30.41
-30.69
-31.11
-31.55
-31.84
-32.27
-32.72
-32.92
-33.22
-33.39
-33.33
-32.95
-31.94
-31.58
-31.25
-31.06
-31.15
-31.4
-32.11
-33.02
-33.93
-34.93
-35.74
-36.18
-36.3
-36.1
-35.4
-34.74
-34.09
-33.37
-32.8
-32.77
-32.77
-33.31
-34.1
-34.96
-35.67
-36.38
-36.72
-36.94
-36.8
-36.3
-35.46
-34.37
-33.2
-31.91
-31.7
-31.39
-31.45
-31.8
-32.11
-32.56
-33.31
-33.96
-34.73
-35.5
-35.43
-35.41
-35.05
-34.57
-34.13
-33.32
-32.03
-31.8
-31.67
-32.03
-32.72
-33.71
-35.02
-36.36
-37.24
-37.67
-38.17
-38.31
-37.71
-37.18
-36.3
-35.64
-34.89
-34.14
-33.96
-33.85
-33.99
-34.3
-34.86
-35.87
-36.84
-37.47
-38.04
-38.35
-38.35
-38.17
-37.72
-37.19
-36.59
-35.78
-35.3
-34.81
-34.83
-35.22
-35.39
-35.69
-36.08
-36.1
-36.04
-35.88
-35.64
-35.4
-35.18
-35.18
-35.35
-35.63
-36.12
-36.45
-36.94
-37.21
-37.27
-37.07
-36.94
-36.71
-36.42
-36.22
-36.07
-36.26
-36.48
-36.74
-37.04
-37.14
-37.33
-37.18
-36.81
-36.39
-35.46
-34.27
-33.56
-33.13
-32.67
-32.6
-32.75
-33.18
-33.9
-34.45
-35.02
-35.46
-35.86
-36.19
-36.16
-36.11
-35.82
-35.63
-35.4
-35.1
-34.91
-34.86
-34.87
-34.96
-35
-35.15
-35.27
-35.47
-35.39
-35.28
-35
-34.65
-34.51
-34.12
-33.9
-34.1
-34.39
-34.76
-35.5
-36.02
-36.69
-37.27
-37.58
-37.78
-37.67
-37.44
-36.87
-36.21
-35.74
-34.99
-34.54
-34.09
-33.95
-34.07
-34.35
-34.6
-35.28
-35.63
-35.65
-35.6
-35.33
-34.87
-34.61
-34.19
-33.91
-33.66
-33.67
-33.99
-34.45
-34.95
-35.43
-35.85
-36.04
-35.86
-35.33
-34.78
-33.95
-33.54
-33.24
-33.17
-33.48
-33.91
-34.65
-35.59
-36.53
-37.59
-38.76
-39.57
-40.06
-40.48
-40.95
-40.27
-39.72
-38.99
-37.92
-37.21
-36.98
-36.82
-36.96
-37.01
-37.14
-37.17
-37.06
-37.03
-36.36
-35.89
-35.34
-34.41
-33.48
-32.58
-31.81
-31.3
-30.91
-30.63
-30.74
-31.06
-31.47
-32.01
-32.9
-33.35
-33.94
-34.9
-35.49
-35.89
-35.97
-35.89
-35.74
-35.51
-35.1
-34.81
-34.67
-34.49
-34.91
-35.4
-36.12
-36.89
-37.41
-37.72
-37.8
-37.55
-37.1
-36.4
-35.71
-35.21
-34.75
-34.52
-34.62
-34.98
-35.64
-36.36
-37.07
-37.79
-37.98
-38.09
-37.96
-37.55
-37.06
-36.54
-35.77
-35.19
-34.67
-34.14
-33.92
-34.47
-34.24
-34.68
-35.28
-35.92
-36.42
-37.06
-36.84
-36.49
-36.41
-35.68
-35.03
-34.51
-34.36
-34.14
-33.85
-33.97
-34.24
-34.56
-35.05
-35.47
-35.55
-35.97
-36.18
-35.98
-35.89
-35.55
-35.04
-34.54
-33.97
-33.69
-33.51
-33.22
-33.51
-33.9
-34.49
-35.14
-36.02
-36.84
-37.69
-38.27
-38.99
-39.15
-39.3
-39.26
-38.95
-38.22
-37.2
-35.94
-35.05
-33.93
-33.24
-32.6
-32.47
-32.6
-32.91
-33.33
-33.86
-34.24
-34.57
-34.44
-34.37
-34.04
-33.53
-33.25
-33.11
-33.14
-33.3
-33.6
-33.93
-34.08
-34.29
-34.33
-34
-33.77
-33.5
-33.27
-32.84
-32.81
-32.72
-33.05
-33.58
-33.96
-34.72
-34.96
-35.54
-35.65
-35.88
-35.66
-35.24
-34.66
-34.05
-33.31
-32.91
-32.78
-32.65
-32.88
-33.63
-34.5
-34.94
-36.02
-36.75
-37.21
-37.07
-37.04
-36.53
-35.85
-35.27
-34.89
-34.59
-34.51
-34.61
-34.74
-34.9
-34.92
-35.09
-34.91
-34.93
-34.63
-34.47
-34.25
-34.3
-34.33
-34.3
-34.39
-34.51
-34.92
-35.21
-35.71
-36.26
-36.81
-37.29
-37.69
-37.85
-37.64
-37.39
-37.02
-36.42
-35.84
-35.45
-35.13
-35.12
-35.29
-35.5
-35.64
-35.71
-35.88
-35.68
-35.69
-35.58
-35.71
-35.97
-36.31
-36.66
-36.9
-37.04
-36.96