Specific conductivity and hydrogen ions measured on two ice core (NEEM and NGRIP)
A stratigraphy-based chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core has been derived by transferring the annual layer counted Greenland Ice Core Chronology 2005 (GICC05) and its model extension (GICC05modelext) from the NGRIP core to the NEEM core using 787 match points of ma...
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Format: | Other/Unknown Material |
Language: | English |
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PANGAEA
2013
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Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.831528 https://doi.org/10.1594/PANGAEA.831528 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.831528 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
NEEM NGRIP North Greenland Eemian Ice Drilling North Greenland Ice Core Project |
spellingShingle |
NEEM NGRIP North Greenland Eemian Ice Drilling North Greenland Ice Core Project 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 Specific conductivity and hydrogen ions measured on two ice core (NEEM and NGRIP) |
topic_facet |
NEEM NGRIP North Greenland Eemian Ice Drilling North Greenland Ice Core Project |
description |
A stratigraphy-based chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core has been derived by transferring the annual layer counted Greenland Ice Core Chronology 2005 (GICC05) and its model extension (GICC05modelext) from the NGRIP core to the NEEM core using 787 match points of mainly volcanic origin identified in the electrical conductivity measurement (ECM) and dielectrical profiling (DEP) records. Tephra horizons found in both the NEEM and NGRIP ice cores are used to test the matching based on ECM and DEP and provide five additional horizons used for the timescale transfer. A thinning function reflecting the accumulated strain along the core has been determined using a Dansgaard-Johnsen flow model and an isotope-dependent accumulation rate parameterization. Flow parameters are determined from Monte Carlo analysis constrained by the observed depth-age horizons. In order to construct a chronology for the gas phase, the ice age-gas age difference (Delta age) has been reconstructed using a coupled firn densification-heat diffusion model. Temperature and accumulation inputs to the Delta age model, initially derived from the water isotope proxies, have been adjusted to optimize the fit to timing constraints from d15N of nitrogen and high-resolution methane data during the abrupt onset of Greenland interstadials. The ice and gas chronologies and the corresponding thinning function represent the first chronology for the NEEM core, named GICC05modelext-NEEM-1. Based on both the flow and firn modelling results, the accumulation history for the NEEM site has been reconstructed. Together, the timescale and accumulation reconstruction provide the necessary basis for further analysis of the records from NEEM. |
format |
Other/Unknown Material |
author |
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 |
author_facet |
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 |
author_sort |
Rasmussen, Sune Olander |
title |
Specific conductivity and hydrogen ions measured on two ice core (NEEM and NGRIP) |
title_short |
Specific conductivity and hydrogen ions measured on two ice core (NEEM and NGRIP) |
title_full |
Specific conductivity and hydrogen ions measured on two ice core (NEEM and NGRIP) |
title_fullStr |
Specific conductivity and hydrogen ions measured on two ice core (NEEM and NGRIP) |
title_full_unstemmed |
Specific conductivity and hydrogen ions measured on two ice core (NEEM and NGRIP) |
title_sort |
specific conductivity and hydrogen ions measured on two ice core (neem and ngrip) |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.831528 https://doi.org/10.1594/PANGAEA.831528 |
op_coverage |
MEDIAN LATITUDE: 76.275000 * MEDIAN LONGITUDE: -46.690000 * SOUTH-BOUND LATITUDE: 75.100000 * WEST-BOUND LONGITUDE: -51.060000 * NORTH-BOUND LATITUDE: 77.450000 * EAST-BOUND LONGITUDE: -42.320000 * DATE/TIME START: 1996-07-01T00:00:00 * DATE/TIME END: 2009-08-20T00:00:00 |
long_lat |
ENVELOPE(-51.060000,-42.320000,77.450000,75.100000) |
genre |
Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
op_source |
Supplement to: 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 |
op_relation |
Data, icesamples and software. Niels Bohr Institute, Center for Ice and Climate, https://www.iceandclimate.nbi.ku.dk/data/ https://doi.pangaea.de/10.1594/PANGAEA.831528 https://doi.org/10.1594/PANGAEA.831528 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.83152810.5194/cp-9-2713-2013 |
_version_ |
1810446314591223808 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.831528 2024-09-15T18:08:56+00:00 Specific conductivity and hydrogen ions measured on two ice core (NEEM and NGRIP) 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 MEDIAN LATITUDE: 76.275000 * MEDIAN LONGITUDE: -46.690000 * SOUTH-BOUND LATITUDE: 75.100000 * WEST-BOUND LONGITUDE: -51.060000 * NORTH-BOUND LATITUDE: 77.450000 * EAST-BOUND LONGITUDE: -42.320000 * DATE/TIME START: 1996-07-01T00:00:00 * DATE/TIME END: 2009-08-20T00:00:00 2013 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.831528 https://doi.org/10.1594/PANGAEA.831528 en eng PANGAEA Data, icesamples and software. Niels Bohr Institute, Center for Ice and Climate, https://www.iceandclimate.nbi.ku.dk/data/ https://doi.pangaea.de/10.1594/PANGAEA.831528 https://doi.org/10.1594/PANGAEA.831528 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: 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 NEEM NGRIP North Greenland Eemian Ice Drilling North Greenland Ice Core Project dataset publication series 2013 ftpangaea https://doi.org/10.1594/PANGAEA.83152810.5194/cp-9-2713-2013 2024-07-24T02:31:21Z A stratigraphy-based chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core has been derived by transferring the annual layer counted Greenland Ice Core Chronology 2005 (GICC05) and its model extension (GICC05modelext) from the NGRIP core to the NEEM core using 787 match points of mainly volcanic origin identified in the electrical conductivity measurement (ECM) and dielectrical profiling (DEP) records. Tephra horizons found in both the NEEM and NGRIP ice cores are used to test the matching based on ECM and DEP and provide five additional horizons used for the timescale transfer. A thinning function reflecting the accumulated strain along the core has been determined using a Dansgaard-Johnsen flow model and an isotope-dependent accumulation rate parameterization. Flow parameters are determined from Monte Carlo analysis constrained by the observed depth-age horizons. In order to construct a chronology for the gas phase, the ice age-gas age difference (Delta age) has been reconstructed using a coupled firn densification-heat diffusion model. Temperature and accumulation inputs to the Delta age model, initially derived from the water isotope proxies, have been adjusted to optimize the fit to timing constraints from d15N of nitrogen and high-resolution methane data during the abrupt onset of Greenland interstadials. The ice and gas chronologies and the corresponding thinning function represent the first chronology for the NEEM core, named GICC05modelext-NEEM-1. Based on both the flow and firn modelling results, the accumulation history for the NEEM site has been reconstructed. Together, the timescale and accumulation reconstruction provide the necessary basis for further analysis of the records from NEEM. Other/Unknown Material Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-51.060000,-42.320000,77.450000,75.100000) |