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Match points used for synchronization of NGRIP, GRIP, and GISP2
We here present a synchronization of the NGRIP, GRIP, and GISP2 ice cores based mainly on volcanic events over the period 14.9-32.45 ka b2k (before AD 2000), corresponding to... -
GISP2 Automatic Weather Station Barber Daily Averages
AWS data from 1987-1995 for stations distributed on and around GISP2. Data received by satellite and accumulated by ARGOS before being transmitted to Univ of Wisconsin-Madison... -
GISP2 14-C (radiocarbon) measurements (Table 2)
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... -
GISP2 Automatic Weather Station Matt Daily Averages
AWS data from 1987-1995 for stations distributed on and around GISP2. Data received by satellite and accumulated by ARGOS before being transmitted to Univ of Wisconsin-Madison... -
GISP2 Automatic Weather Station Klinck Daily Averages
AWS data from 1987-1995 for stations distributed on and around GISP2. Data received by satellite and accumulated by ARGOS before being transmitted to Univ of Wisconsin-Madison... -
GISP2 Automatic Weather Station Kenton Daily Averages
AWS data from 1987-1995 for stations distributed on and around GISP2. Data received by satellite and accumulated by ARGOS before being transmitted to Univ of Wisconsin-Madison... -
GISP2 Automatic Weather Station Julie Daily Averages
AWS data from 1987-1995 for stations distributed on and around GISP2. Data received by satellite and accumulated by ARGOS before being transmitted to Univ of Wisconsin-Madison... -
GISP2 Automatic Weather Station Daily Averages
AWS data from 1987-1995 for stations distributed on and around GISP2. Data received by satellite and accumulated by ARGOS before being transmitted to Univ of Wisconsin-Madison... -
GISP2 Automatic Weather Station Cathy Daily Averages
AWS data from 1987-1995 for stations distributed on and around GISP2. Data received by satellite and accumulated by ARGOS before being transmitted to Univ of Wisconsin-Madison... -
GISP2 14-C (radiocarbon) measurements (Table 1)
Approx age of ice based on layer counting and delta 18O data for trapped air (Grootes et al., 1993; Sowers et al., 1993; Meese et al., 1994a; Stuiver et al., 1995). Typical... -
GISP2 Ar, Kr, and Xe data
The dominant affect on these values is believed to be gravitational fractionation during the gas occlusion process. Last 3 samples are from silty ice; their Kr/Ar and Xe/Ar... -
GRIP Basal Ice: Crystal Sizes
Depth is midpoint. Crystal refers to the average horizontal crystal diameter in mm. -
GRIP Ice Fabric
36 fabric diagrams. Each data point consists of azimuth of c-axis (0-360 deg), and inclination (0-90 deg), with 0 deg=horizontal c-axis and 90 deg=vertical c-axis. The measured... -
GRIP c-axis orientations
Average horizontal and vertical crystal diameters, obtained by linear-intercept measurements on thin sections. Data not corrected for sectioning effect. Depth is midpoint. -
GRIP Dielectric Profiling (DEP) in full resolution
Sigma infinity has a pure ice background of 9 microsiemens/m, and responds to the chemistry of the ice. The only components known to cause an increased sigma infinity are... -
GRIP Electrical Conductivity
Depth refers to the top of the sample. Data are averaged in 55 cm intervals. unit=microeq/kg obtained by H+=0.085i[microA]1.63 above 297m and H+=0.045i[microA]**1.73 below 297m. -
GRIP Dielectric Profiling (DEP) and Electrical Conductivity (ECM) averaged data
Each data point is an average over a 55 cm interval; data are correted, level changes between 730 and 930 m are believed to be spurious (Wolff, et al., 1995) due to poor... -
GRIP Acidity
Data calculated from electrical conductivity; depth is given at the local maximum in the ECM record; age is given at the local acid peak -
GRIP Basal Ice: Debris Content
Depth is midpoint -
Stable isotope records of Arctic and Antarctic ice cores
Polar precipitation archived in ice caps contains information on past temperature conditions. Such information can be retrieved by measuring the water isotopic signals of ?18O...
