Physical properties of firn cores from the 1995/96 and 1996/97 field seasons, 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
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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ftdatacite:10.1594/pangaea.728160 2023-05-15T13:40:55+02:00 Physical properties of firn cores from the 1995/96 and 1996/97 field seasons, 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 Oerter, Hans Graf, Wolfgang Wilhelms, Frank Minikin, Andreas Miller, Heinz 1999 application/zip https://dx.doi.org/10.1594/pangaea.728160 https://doi.pangaea.de/10.1594/PANGAEA.728160 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.3189/172756499781820914 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Firn auger EPICA_DML2 Neumayer Station WMO89002 European Project for Ice Coring in Antarctica EPICA Supplementary Collection of Datasets Collection article 1999 ftdatacite https://doi.org/10.1594/pangaea.728160 https://doi.org/10.3189/172756499781820914 2022-02-08T16:24:46Z 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. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land EPICA DataCite Metadata Store (German National Library of Science and Technology) Amundsenisen ENVELOPE(-6.000,-6.000,-74.500,-74.500) Andreas ENVELOPE(-60.729,-60.729,-64.008,-64.008) Dronning Maud Land Heimefrontfjella ENVELOPE(-11.000,-11.000,-74.667,-74.667) Neumayer Neumayer Station |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Firn auger EPICA_DML2 Neumayer Station WMO89002 European Project for Ice Coring in Antarctica EPICA |
spellingShingle |
Firn auger EPICA_DML2 Neumayer Station WMO89002 European Project for Ice Coring in Antarctica EPICA Oerter, Hans Graf, Wolfgang Wilhelms, Frank Minikin, Andreas Miller, Heinz Physical properties of firn cores from the 1995/96 and 1996/97 field seasons, 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 |
topic_facet |
Firn auger EPICA_DML2 Neumayer Station WMO89002 European Project for Ice Coring in Antarctica EPICA |
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 |
Article in Journal/Newspaper |
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, 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 |
title_short |
Physical properties of firn cores from the 1995/96 and 1996/97 field seasons, 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 |
title_full |
Physical properties of firn cores from the 1995/96 and 1996/97 field seasons, 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 |
title_fullStr |
Physical properties of firn cores from the 1995/96 and 1996/97 field seasons, 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 |
title_full_unstemmed |
Physical properties of firn cores from the 1995/96 and 1996/97 field seasons, 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 |
title_sort |
physical properties of firn cores from the 1995/96 and 1996/97 field seasons, 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 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1999 |
url |
https://dx.doi.org/10.1594/pangaea.728160 https://doi.pangaea.de/10.1594/PANGAEA.728160 |
long_lat |
ENVELOPE(-6.000,-6.000,-74.500,-74.500) ENVELOPE(-60.729,-60.729,-64.008,-64.008) ENVELOPE(-11.000,-11.000,-74.667,-74.667) |
geographic |
Amundsenisen Andreas Dronning Maud Land Heimefrontfjella Neumayer Neumayer Station |
geographic_facet |
Amundsenisen Andreas Dronning Maud Land Heimefrontfjella Neumayer Neumayer Station |
genre |
Antarc* Antarctica Dronning Maud Land EPICA |
genre_facet |
Antarc* Antarctica Dronning Maud Land EPICA |
op_relation |
https://dx.doi.org/10.3189/172756499781820914 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.728160 https://doi.org/10.3189/172756499781820914 |
_version_ |
1766143225124356096 |