Citation:

PANGAEA.922310

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Abstract:

Dielectric Profiling (DEP) of the North Greenland Ice Core Project (NGRIP1) core were recorded in the field during the 1996-1998 field seasons with the DEP device described by Wilhelms et al. (1998). The permittivity and conductivity of DEP data are calculated by their respective densities and conductivities (Wilhelms, 2005). The resolution of DEP data is 5 mm depth intervals. The DEP was not processed at a consistent temperature due to the varying temperature in the field seasons. For more information on the calibration procedure see Mojtabavi et al, 2020.

We used 3.15 (permittivity) for deeper than 100 m depth (based on the radar modelling results).

Related to:

Mojtabavi, Seyedhamidreza; Eisen, Olaf; Franke, Steven; Jansen, Daniela; Steinhage, Daniel; Paden, John D; Dahl-Jensen, Dorthe; Weikusat, Ilka; Eichler, Jan; Wilhelms, Frank (2022): Origin of englacial stratigraphy at three deep ice core sites of the Greenland Ice Sheet by synthetic radar modelling. Journal of Glaciology, 1-13, https://doi.org/10.1017/jog.2021.137

Mojtabavi, Seyedhamidreza; Wilhelms, Frank; Cook, Eliza; Davies, Siwan M; Sinnl, Giulia; Skov Jensen, Mathias; Dahl-Jensen, Dorthe; Svensson, Anders M; Vinther, Bo Møllesøe; Kipfstuhl, Sepp; Karlsson, Nanna Bjørnholt; Faria, Sergio Henrique; Gkinis, Vasileios; Kjær, Helle Astrid; Erhardt, Tobias; Berben, Sarah M P; Nisancioglu, Kerim H; Koldtoft, Iben; Rasmussen, Sune Olander (2020): A first chronology for the East GReenland Ice-core Project (EGRIP) over the Holocene and last glacial termination. Climate of the Past, 16, 2359-2380, https://doi.org/10.5194/cp-16-2359-2020

Rasmussen, Sune Olander; Abbott, Peter M; Blunier, Thomas; Bourne, Mark; Brook, Edward J; Buchardt, Susanne L; Buizert, Christo; Chappellaz, Jérôme A; Clausen, Henrik Brink; Cook, Eliza; Dahl-Jensen, Dorthe; Davies, Siwan M; Guillevic, Myriam; Kipfstuhl, Sepp; Laepple, Thomas; Seierstad, Inger K; Severinghaus, Jeffrey P; Steffensen, Jørgen Peder; Stowasser, Christopher; Svensson, Anders M; Vallelonga, Paul T; Vinther, Bo Møllesøe; Wilhelms, Frank; Winstrup, Mai (2013): A first chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core. Climate of the Past, 9(6), 2713-2730, https://doi.org/10.5194/cp-9-2713-2013 (relevant reference for NGRIP2 DEP data, below 1298 m depth)

Wilhelms, Frank (2005): Explaining the dielectric properties of firn as a density-and-conductivity mixed permittivity (DECOMP). Geophysical Research Letters, 32, L16501, https://doi.org/10.1029/2005GL022808

Wilhelms, Frank; Kipfstuhl, Sepp; Miller, Heinz; Heinloth, K; Firestone, J (1998): Precise dielectric profiling of ice cores: a new device with improved guarding and its theory. Journal of Glaciology, 44(146), 171-174, https://doi.org/10.3189/S002214300000246X

Project(s):

East Greenland Ice-core Project (EGRIP)

Coverage:

Latitude: 75.100000 * Longitude: -42.320000

Date/Time Start: 1996-07-01T00:00:00 * Date/Time End: 1996-07-01T00:00:00

Minimum DEPTH, ice/snow: 11.025 m * Maximum DEPTH, ice/snow: 1298.525 m

Event(s):

NGRIP (NorthGRIP) * Latitude: 75.100000 * Longitude: -42.320000 * Date/Time: 1996-07-01T00:00:00 * Elevation: 2917.0 m * Location: Greenland * Campaign: * Basis: Sampling/drilling ice * Method/Device: Ice drill (ICEDRILL)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, ice/snow	Depth ice/snow	m	Mojtabavi, Seyedhamidreza		Geocode
2	Permittivity, relative	Permittivity rel		Mojtabavi, Seyedhamidreza

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

247016 data points

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