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  • 1
    Book
    Book
    11th International Conference on the Physics and Chemistry of Ice (PCI-2006) : Bremerhaven, Germany, 23 - 28 July 2006; abstracts (2007)
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Details Availability
    Keywords: Ice Congresses ; Konferenzschrift 2006 ; Konferenzschrift ; Eis ; Physik ; Chemie ; Eis ; Glaziologie ; Gashydrate ; Schnee ; Eisbildung
    Type of Medium: Book
    Pages: XIII, 214 S. , Ill., graph. Darst.
    Series Statement: Berichte zur Polar- und Meeresforschung 549
    URL: http://www.gbv.de/dms/tib-ub-hannover/525005641.pdf
    DDC: 551.31
    RVK:
    RY 20075
    Language: English
    Note: Literaturangaben
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  • 2
    Book
    Book
    Leitfähigkeits- und Dichtemessung an Eisbohrkernen : = Measuring the conductivity and density of ice cores (1996)
    Bremerhaven : Alfred-Wegener-Institut für Polar- und Meeresforschung
    Details Availability
    Keywords: Hochschulschrift ; Arktis ; Eiskern ; Elektrische Leitfähigkeit ; Dichtebestimmung ; Arktis ; Eiskern ; Elektrische Leitfähigkeit ; Dichtebestimmung ; Eiskern ; Dichte ; Leitfähigkeit
    Type of Medium: Book
    Pages: 224 S. , graph. Darst., Kt.
    Series Statement: Berichte zur Polarforschung 191
    URL: https://www.gbv.de/dms/tib-ub-hannover/197919545.pdf
    DDC: 551.31
    RVK:
    RY 20075
    RVK:
    RB 10375
    Language: German
    Note: Zsfasssung in engl. Sprache. Im Anhang gekürzte Fassung einer Diplomarbeit , Vollst. zugl.: Bonn, Univ., Dipl.-Arbeit, 1995
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  • 3
    Book
    Book
    Messung dielektrischer Eigenschaften polarer Eiskerne : = Measuring the dielectric properties of polar ice cores (2000)
    Bremerhaven : Alfred-Wegener-Institut für Polar- und Meeresforschung
    Details Availability
    Keywords: Ice Electric properties ; Ice Electric properties ; Paleoclimatology ; Paleoclimatology ; Hochschulschrift ; Eiskern ; Sediment ; Nachweis ; Dielektrische Eigenschaft ; Elektrische Leitfähigkeit ; Messung ; Eiskern ; Sediment ; Nachweis ; Dielektrische Eigenschaft ; Elektrische Leitfähigkeit ; Messung
    Type of Medium: Book
    Pages: V, 171 S. , Ill., graph. Darst.
    Series Statement: Berichte zur Polarforschung 367
    URL: http://www.gbv.de/dms/bs/toc/319750515.pdf
    DDC: 551.31
    RVK:
    RY 20075
    Language: German
    Note: Zsfassung in engl. Sprache , Teilw. zugl.: Bremen, Univ., Diss., 2000
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  • 4
    Online Resource
    Online Resource
    11th International Conference on the Physics and Chemistry of Ice (PCI-2006) : abstracts ; Bremerhaven, Germany, 23 - 28 July 2006 (2007)
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Details Availability
    Keywords: Ice Congresses ; Konferenzschrift ; Eis ; Physik ; Chemie ; Eisbildung
    Type of Medium: Online Resource
    Pages: Online-Ressource
    Series Statement: Berichte zur Polar- und Meeresforschung 549
    URL: http://hdl.handle.net/10013/epic.26252
    DDC: 551.31
    RVK:
    RY 20075
    Language: English
    Note: Literaturangaben
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  • 5
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    Impurity-controlled densification: a new model for stratified polar firn (2014)
    Cambridge University Press
    Details
    Publication Date: 2014-01-31
    Print ISSN: 0022-1430
    Electronic ISSN: 1727-5652
    Topics: Geography , Geosciences
    Published by Cambridge University Press on behalf of The International Glaciological Society (IGS).
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    PAPER CURRENT
  • 6
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    Chronology for the East GReenland Ice-core Project (EGRIP) (2020)
    PANGAEA
    Details
    Publication Date: 2024-07-19
    Description: This paper provides the first chronology for the deep ice core from the East GReenland Ice-core Project (EGRIP) over the Holocene and late last glacial period. We rely mainly on volcanic events and common patterns of peaks in dielectric profiling (DEP), electrical conductivity measurements (ECM) and tephra records for the synchronization between the EGRIP, NEEM and NGRIP ice cores in Greenland. We transfer the annual-layer-counted Greenland Ice Core Chronology 2005 (GICC05) timescale from the NGRIP core to the EGRIP ice core by means of 373 match points. The NEEM ice core is only used for supporting match-point identification. We name our EGRIP time scale GICC05-EGRIP-1. Over the uppermost 1383.84 m, we establish a depth–age relationship dating back to 14,965 a b2k (years before the year 2000 CE). Tephra horizons provide an independent validation of our match points. In addition, we compare the ratio of annual layer thicknesses between ice cores in-between the match points to assess our results in view of the different ice-flow patterns and accumulation regimes of the different periods and geographical regions. This initial timescale is the basis of interpretation and refinement of the presently derived EGRIP high-resolution data sets of chemical impurities.
    Keywords: AWI Arctic Land Expedition; East Greenland Ice-core Project; EastGRIP; EGRIP; EGRIP_2017; EGRIP_2018; EGRIP_2019; GL-Land_2017_EGRIP; GL-Land_2018_EGRIP; GL-Land_2019_EGRIP; Greenland; ICEDRILL; Ice drill
    Type: dataset bundled publication
    Format: application/zip, 10 datasets
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    DATA PANGAEA
  • 7
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    Chronology for the EDML ice core from Dronning Maud Land, Antarctica, over the last 150 000 years (2007)
    PANGAEA
    In:  Supplement to: Ruth, Urs; Barnola, Jean-Marc; Beer, Jürg; Bigler, Matthias; Blunier, Thomas; Castellano, Emiliano; Fischer, Hubertus; Fundel, Felix; Huybrechts, Philippe; Kaufmann, Patrik R; Kipfstuhl, Sepp; Lambrecht, Anja; Morganti, Andrea; Oerter, Hans; Parrenin, Frédéric; Rybak, Oleg; Severi, Mirko; Udisti, Roberto; Wilhelms, Frank; Wolff, Eric William (2007): EDML1: a chronology for the EPICA deep ice core from Dronning Maud Land, Antarctica, over the last 150 000 years. Climate of the Past, 3, 475-484, https://doi.org/10.5194/cp-3-475-2007
    Details
    Publication Date: 2024-07-19
    Description: A chronology called EDML1 has been developed for the EPICA ice core from Dronning Maud Land (EDML). EDML1 is closely interlinked with EDC3, the new chronology for the EPICA ice core from Dome-C (EDC) through a stratigraphic match between EDML and EDC that consists of 322 volcanic match points over the last 128 ka. The EDC3 chronology comprises a glaciological model at EDC, which is constrained and later selectively tuned using primary dating information from EDC as well as from EDML, the latter being transferred using the tight stratigraphic link between the two cores. Finally, EDML1 was built by exporting EDC3 to EDML. For ages younger than 41 ka BP the new synchronized time scale EDML1/EDC3 is based on dated volcanic events and on a match to the Greenlandic ice core chronology GICC05 via 10Be and methane. The internal consistency between EDML1 and EDC3 is estimated to be typically ~6 years and always less than 450 years over the last 128 ka (always less than 130 years over the last 60 ka), which reflects an unprecedented synchrony of time scales. EDML1 ends at 150 ka BP (2417 m depth) because the match between EDML and EDC becomes ambiguous further down. This hints at a complex ice flow history for the deepest 350 m of the EDML ice core.
    Keywords: EDML; EDRILL; EPICA; EPICA-Campaigns; EPICA drill; EPICA Dronning Maud Land, DML28C01_00; European Project for Ice Coring in Antarctica; Kohnen Station
    Type: dataset publication series
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 8
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    First results from stable-istope measurements on ice cores from Dronning Maud Land (2004)
    PANGAEA
    In:  Supplement to: Oerter, Hans; Graf, Wolfgang; Meyer, Hanno; Wilhelms, Frank (2004): The EPICA ice core from Dronning Maud Land: first results from stable-istope measurements. Annals of Glaciology, 39, 307-312, https://doi.org/10.3189/172756404781814032
    Details
    Publication Date: 2024-07-19
    Description: The European Project for Ice Coring in Antarctica (EPICA) focuses on the drilling of two deep ice cores, the first at Dome C and the second at Kohnen station (75°00' S, 0°04' E) in Dronning Maud Land (DML). This paper deals with stable-isotope records from ice cores drilled in DML. In the first season, the deep EPICA DML core reached a depth of 450 m, recovering ice approximately 7000 years old. Generally, the d18O record indicates a stable Holocene climate and shows low variability. However, during the last 4000 years (based on a preliminary time-scale) the d18O values decrease continuously by about 0.6%, and the deuterium excess values increase by about 0.5%. The correlation between d18O and the deuterium excess d is investigated for a 50m long core section and the near-surface snow. High-pass filtered profiles are positively correlated, whereas the correlation between low-pass filtered profiles is negative. A post-depositional effect due to diffusion processes can be seen in a sub-annually resolved profile from snow-pit samples. Changes in the seasonality of the evolution of the snow cover and the consequences for stable-isotope content are demonstrated with data from ice core B31.
    Keywords: B31; DML07C98_31; DML25S02_03; Dronning Maud Land, Antarctica; EDML; EDRILL; EPICA; EPICA_DML3; EPICA_DML7; EPICA-Campaigns; EPICA drill; EPICA Dronning Maud Land, DML28C01_00; European Project for Ice Coring in Antarctica; ICEDRILL; Ice drill; Kohnen Station; Neumayer Station (WMO89002); Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SNOWPIT; Snow pit; SPP1158; SS0203
    Type: dataset publication series
    Format: application/zip, 6 datasets
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    DATA PANGAEA
  • 9
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    Physical properties of firn cores from the 1995/96 and 1996/97 field seasons (1999)
    PANGAEA
    In:  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
    Details
    Publication Date: 2024-07-19
    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.
    Keywords: 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)
    Type: dataset publication series
    Format: application/zip, 9 datasets
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    DATA PANGAEA
  • 10
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    Stable-isotope records from Dronning Maud Land, Antarctica (2002)
    PANGAEA
    In:  Supplement to: Graf, Wolfgang; Oerter, Hans; Reinwarth, Oskar; Stichler, Willibald; Wilhelms, Frank; Miller, Heinz; Mulvaney, Robert (2002): Stable-isotope records from Dronning Maud Land, Antarctica. Annals of Glaciology, 35, 195-201, https://doi.org/10.3189/172756402781816492
    Details
    Publication Date: 2024-07-19
    Description: The European Project for Ice Coring in Antarctica (EPICA) includes a comprehensive pre-site survey on the inland ice plateau of Dronning Maud Land. This paper focuses on the investigation of the 18O content of shallow firn and ice cores. These cores were dated by profiles derived from dielectric-profiling and continuous flow analysis measurements. The individual records were stacked in order to obtain composite chronologies of 18O contents and accumulation rates with enhanced signal-to-noise variance ratios.These chronologies document variations in the last 200 and 1000 years.The 18O contents and accumulation rates decreased in the 19th century and increased during the 20th century.Using the empirical relationships between stable isotopes, accumulation rates and the 10m firn temperature, the variation of both parameters can be explained by the same temperature history.But other causes for these variations, such as the build-up of the snow cover, cannot be excluded. A marked feature of the 1000 year chronology occurs during the period AD 1180-1530 when the 18O contents remains below the long-term mean. Cross-correlation analyses between five cores from the Weddell Sea region and Dronning Maud Land show that 18O records can in some periods be positively correlated and in others negatively correlated, indicating a complex climatic history in time and space.
    Keywords: B31; B32; B33; DML01C96_00; DML02C96_00; DML02S98_13; DML03C97_00; DML03C98_09; DML04C97_00; DML05C97_00; DML05C98_07; DML05C98_32; DML06C97_00; DML07C97_00; DML07C98_31; DML08C97_00; DML09S97_13; DML10C97_00; DML11C98_03; DML12C98_17; DML13C98_16; DML14C98_15; DML15C98_14; DML16C98_13; DML17C98_33; DML18C98_04; DML19C98_05; DML19S98_04; DML20C98_08; DML21C98_10; DML22C98_11; DML23C98_12; DML25C00_01; DML26C00_03; DML27C00_04; Dronning Maud Land, Antarctica; EPICA; EPICA_DML1; EPICA_DML2; EPICA_DML3; EPICA_DML5; European Project for Ice Coring in Antarctica; FB9506; FB96DML01; FB96DML02; FB97DML03; FB97DML04; FB97DML05; FB97DML06; FB97DML07; FB97DML08; FB97DML10; FB9803; FB9804; FB9805; FB9807; FB9808; FB9809; FB9810; FB9811; FB9812; FB9813; FB9814; FB9815; FB9816; FB9817; FB9901; FB9903; FB9904; FIRN; Firn auger; ICEDRILL; Ice drill; Kohnen Station; Neumayer Station (WMO89002); NM03C95_06; SNOWPIT; Snow pit; SS9713; SS9804; SS9813
    Type: dataset publication series
    Format: application/zip, 41 datasets
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    DATA PANGAEA
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