Physical properties of firn cores from the 1995/96 and 1996/97 field seasons
The paper focuses on studies of snow-pit samples and shallow firn cores taken during the 1995-96 and 1996-97 field seasons at Amundsenisen, Dronning Maud Land, Antarctica. The dating of the firn is based on the artificial tritium distribution in the snow cover and on several reference horizons ident...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.728160 2023-05-15T13:29:46+02:00 Physical properties of firn cores from the 1995/96 and 1996/97 field seasons Oerter, Hans Graf, Wolfgang Wilhelms, Frank Minikin, Andreas Miller, Heinz MEDIAN LATITUDE: -75.137889 * MEDIAN LONGITUDE: 3.672981 * SOUTH-BOUND LATITUDE: -75.933333 * WEST-BOUND LONGITUDE: -3.430333 * NORTH-BOUND LATITUDE: -74.399000 * EAST-BOUND LONGITUDE: 11.350000 * DATE/TIME START: 1997-01-01T00:00:00 * DATE/TIME END: 1997-01-30T00:00:00 1999-09-28 application/zip, 9 datasets https://doi.pangaea.de/10.1594/PANGAEA.728160 https://doi.org/10.1594/PANGAEA.728160 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.728160 https://doi.org/10.1594/PANGAEA.728160 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Oerter, Hans; Graf, Wolfgang; Wilhelms, Frank; Minikin, Andreas; Miller, Heinz (1999): Accumulation studies on Amundsenisen, Dronning Maud Land, by means of tritium, DEP and stable isotope measurements: first results from the 1995/96 and 1996/97 field seasons. Annals of Glaciology, 29, 1-9, https://doi.org/10.3189/172756499781820914 DML01C97_00 DML03C97_00 DML04C97_00 DML05C97_00 DML06C97_00 DML07C97_00 DML08C97_00 DML09C97_00 DML10C97_00 Dronning Maud Land Antarctica EPICA EPICA_DML2 European Project for Ice Coring in Antarctica FB97DML01 FB97DML03 FB97DML04 FB97DML05 FB97DML06 FB97DML07 FB97DML08 FB97DML09 FB97DML10 FIRN Firn auger Neumayer Station (WMO89002) Dataset 1999 ftpangaea https://doi.org/10.1594/PANGAEA.728160 https://doi.org/10.3189/172756499781820914 2023-01-20T07:31:31Z The paper focuses on studies of snow-pit samples and shallow firn cores taken during the 1995-96 and 1996-97 field seasons at Amundsenisen, Dronning Maud Land, Antarctica. The dating of the firn is based on the artificial tritium distribution in the snow cover and on several reference horizons identified by electrical measurements. The early 1964 through 1965 horizon is marked by the deposition of sulfate released to the atmosphere during the eruption of the Agung volcano in March 1963; this horizon was detected by dielectric profiling and electrical conductivity measurements; the proof by chemical analysis has still to be seen. At the ten investigated sites on Amundsenisen the 1964-65 horizon was identified 4.1-5.7 m below the surface. The accumulation rates on Amundsenisen are 41-91 kg/m**2/a. The cores are up to 100 years old. A relationship between isotope content and the mean air temperature on a regional scale can be based on measurements of firn temperature at 10 m depth at the drilling sites. Between Neumayer station at the coast and Heimefrontfjella, the temperature gradient of the deuterium content is 9.6 per mil/K. South of Heimefrontfjella, on the Amundsenisen plateau, it is only 5.5 per mil/K. Time series of yearly accumulation rates show no significant trend. For the isotope records a significant trend to higher values with gradients of 0.1-0.2 d2H per mil/a can be seen in five of the ten time series. Dataset Annals of Glaciology Antarc* Antarctica Dronning Maud Land EPICA PANGAEA - Data Publisher for Earth & Environmental Science Dronning Maud Land Neumayer Neumayer Station Heimefrontfjella ENVELOPE(-11.000,-11.000,-74.667,-74.667) Amundsenisen ENVELOPE(-6.000,-6.000,-74.500,-74.500) ENVELOPE(-3.430333,11.350000,-74.399000,-75.933333) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
DML01C97_00 DML03C97_00 DML04C97_00 DML05C97_00 DML06C97_00 DML07C97_00 DML08C97_00 DML09C97_00 DML10C97_00 Dronning Maud Land Antarctica EPICA EPICA_DML2 European Project for Ice Coring in Antarctica FB97DML01 FB97DML03 FB97DML04 FB97DML05 FB97DML06 FB97DML07 FB97DML08 FB97DML09 FB97DML10 FIRN Firn auger Neumayer Station (WMO89002) |
spellingShingle |
DML01C97_00 DML03C97_00 DML04C97_00 DML05C97_00 DML06C97_00 DML07C97_00 DML08C97_00 DML09C97_00 DML10C97_00 Dronning Maud Land Antarctica EPICA EPICA_DML2 European Project for Ice Coring in Antarctica FB97DML01 FB97DML03 FB97DML04 FB97DML05 FB97DML06 FB97DML07 FB97DML08 FB97DML09 FB97DML10 FIRN Firn auger Neumayer Station (WMO89002) Oerter, Hans Graf, Wolfgang Wilhelms, Frank Minikin, Andreas Miller, Heinz Physical properties of firn cores from the 1995/96 and 1996/97 field seasons |
topic_facet |
DML01C97_00 DML03C97_00 DML04C97_00 DML05C97_00 DML06C97_00 DML07C97_00 DML08C97_00 DML09C97_00 DML10C97_00 Dronning Maud Land Antarctica EPICA EPICA_DML2 European Project for Ice Coring in Antarctica FB97DML01 FB97DML03 FB97DML04 FB97DML05 FB97DML06 FB97DML07 FB97DML08 FB97DML09 FB97DML10 FIRN Firn auger Neumayer Station (WMO89002) |
description |
The paper focuses on studies of snow-pit samples and shallow firn cores taken during the 1995-96 and 1996-97 field seasons at Amundsenisen, Dronning Maud Land, Antarctica. The dating of the firn is based on the artificial tritium distribution in the snow cover and on several reference horizons identified by electrical measurements. The early 1964 through 1965 horizon is marked by the deposition of sulfate released to the atmosphere during the eruption of the Agung volcano in March 1963; this horizon was detected by dielectric profiling and electrical conductivity measurements; the proof by chemical analysis has still to be seen. At the ten investigated sites on Amundsenisen the 1964-65 horizon was identified 4.1-5.7 m below the surface. The accumulation rates on Amundsenisen are 41-91 kg/m**2/a. The cores are up to 100 years old. A relationship between isotope content and the mean air temperature on a regional scale can be based on measurements of firn temperature at 10 m depth at the drilling sites. Between Neumayer station at the coast and Heimefrontfjella, the temperature gradient of the deuterium content is 9.6 per mil/K. South of Heimefrontfjella, on the Amundsenisen plateau, it is only 5.5 per mil/K. Time series of yearly accumulation rates show no significant trend. For the isotope records a significant trend to higher values with gradients of 0.1-0.2 d2H per mil/a can be seen in five of the ten time series. |
format |
Dataset |
author |
Oerter, Hans Graf, Wolfgang Wilhelms, Frank Minikin, Andreas Miller, Heinz |
author_facet |
Oerter, Hans Graf, Wolfgang Wilhelms, Frank Minikin, Andreas Miller, Heinz |
author_sort |
Oerter, Hans |
title |
Physical properties of firn cores from the 1995/96 and 1996/97 field seasons |
title_short |
Physical properties of firn cores from the 1995/96 and 1996/97 field seasons |
title_full |
Physical properties of firn cores from the 1995/96 and 1996/97 field seasons |
title_fullStr |
Physical properties of firn cores from the 1995/96 and 1996/97 field seasons |
title_full_unstemmed |
Physical properties of firn cores from the 1995/96 and 1996/97 field seasons |
title_sort |
physical properties of firn cores from the 1995/96 and 1996/97 field seasons |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.728160 https://doi.org/10.1594/PANGAEA.728160 |
op_coverage |
MEDIAN LATITUDE: -75.137889 * MEDIAN LONGITUDE: 3.672981 * SOUTH-BOUND LATITUDE: -75.933333 * WEST-BOUND LONGITUDE: -3.430333 * NORTH-BOUND LATITUDE: -74.399000 * EAST-BOUND LONGITUDE: 11.350000 * DATE/TIME START: 1997-01-01T00:00:00 * DATE/TIME END: 1997-01-30T00:00:00 |
long_lat |
ENVELOPE(-11.000,-11.000,-74.667,-74.667) ENVELOPE(-6.000,-6.000,-74.500,-74.500) ENVELOPE(-3.430333,11.350000,-74.399000,-75.933333) |
geographic |
Dronning Maud Land Neumayer Neumayer Station Heimefrontfjella Amundsenisen |
geographic_facet |
Dronning Maud Land Neumayer Neumayer Station Heimefrontfjella Amundsenisen |
genre |
Annals of Glaciology Antarc* Antarctica Dronning Maud Land EPICA |
genre_facet |
Annals of Glaciology Antarc* Antarctica Dronning Maud Land EPICA |
op_source |
Supplement to: Oerter, Hans; Graf, Wolfgang; Wilhelms, Frank; Minikin, Andreas; Miller, Heinz (1999): Accumulation studies on Amundsenisen, Dronning Maud Land, by means of tritium, DEP and stable isotope measurements: first results from the 1995/96 and 1996/97 field seasons. Annals of Glaciology, 29, 1-9, https://doi.org/10.3189/172756499781820914 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.728160 https://doi.org/10.1594/PANGAEA.728160 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.728160 https://doi.org/10.3189/172756499781820914 |
_version_ |
1766002738348425216 |