GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • PANGAEA  (528)
  • AMER GEOPHYSICAL UNION  (1)
  • Elsevier  (1)
  • INT GLACIOL SOC  (1)
Document type
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Surface topography and ice flow in the vicinity of the EDML deep-drilling site, Antarctica (2007)
    INT GLACIOL SOC
    In:  EPIC3Journal of Glaciology, INT GLACIOL SOC, 53(182), pp. 442-448, ISSN: 0022-1430
    Details
    Publication Date: 2019-07-16
    Description: Interpretation of ice-core records requires accurate knowledge of the past and present surface topography and stress–strain fields. The European Project for Ice Coring in Antarctica (EPICA) drilling site (75.00258°S, 0.06848°E; 2891.7 m) in Dronning Maud Land, Antarctica, is located in the immediate vicinity of a transient and forking ice divide. A digital elevation model is determined from the combination of kinematic GPS measurements with the GLAS12 datasets from the ICESat. Based on a network of stakes, surveyed with static GPS, the velocity field around the drilling site is calculated. The annual mean velocity magnitude of 12 survey points amounts to 0.74ma–1. Flow directions mainly vary according to their distance from the ice divide. Surface strain rates are determined from a pentagonshaped stake network with one center point close to the drilling site. The strain field is characterized by along-flow compression, lateral dilatation and vertical layer thinning.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    facet.materialart.
    Unknown
    Fracture of Antarctic shelf ice (2002)
    AMER GEOPHYSICAL UNION
    In:  EPIC3Journal of Geophysical Research-Earth Surface, AMER GEOPHYSICAL UNION, 107(B1), 13 p., pp. 2002, ISSN: 0148-0227
    Details
    Publication Date: 2019-07-17
    Description: We have investigated the fracture of Antarctic shelf ice core using two fracture mechanics test methods: the chevron-notched short-rod specimen loaded in tension and the chevron-notched round-bar specimen loaded in three-point bending. These tests have been used to measure the fracture initiation toughness, K init, at which crack growth starts, on samples taken through the entire thickness of the Ronne Ice Shelf, from low-density firn through consolidated meteoric ice to basal marine ice. The fracture data are presented together with depth profiles of relevant physical and mechanical properties derived from the test specimens: temperature, density, elastic modulus, and grain size. It is found that the trend in measured fracture toughness closely reflects changes in ice density and elastic modulus. We augment the experiment study by presenting a fracture mechanics analysis of ice shelf surface and basal crevassing which directly incorporates our measurements. For the examined ice shelf profiles, basal crevasses are found to be inherently unstable unless an external restraining force is imposed, which has important implications for overall ice shelf stability. On the other hand, surface crevassing is shown to be innately stable at depth. Our fracture mechanics model is used to predict local ice shelf back stress in the vicinity of basal crevassing and is validated directly against field observations of crevasse penetration on the Ronne Ice Shelf.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    facet.materialart.
    Unknown
    Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions (2012)
    Elsevier
    In:  EPIC3Quaternary Science Reviews, Elsevier, 55, pp. 75-90
    Details
    Publication Date: 2019-07-17
    Description: Temperature changes in Antarctica over the last millennium are investigated using proxy records, a set of simulations driven by natural and anthropogenic forcings and one simulation with data assimilation. Over Antarctica, a long term cooling trend in annual mean is simulated during the period 1000-1850. The main contributor to this cooling trend is the volcanic forcing, astronomical forcing playing a dominant role at seasonal timescale. Since 1850, all the models produce an Antarctic warming in response to the increase in greenhouse gas concentrations. We present a composite of Antarctic temperature, calculated by averaging seven temperature records derived from isotope measurements in ice cores. This simple approach is supported by the coherency displayed between model results at these data grid points and Antarctic mean temperature. The composite shows a weak multi-centennial cooling trend during the pre-industrial period and a warming after 1850 that is broadly consistent with model results. In both data and simulations, large regional variations are superimposed on this common signal, at decadal to centennial timescales. The model results appear spatially more consistent than ice core records. We conclude that more records are needed to resolve the complex spatial distribution of Antarctic temperature variations during the last millennium.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 4
    facet.materialart.
    Unknown
    High resolution δ¹⁸O and deuterium of firn core DML95C07_01 (2010)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Keywords: Calculated; Depth, bottom/max; DEPTH, ice/snow; Depth, top/min; Deuterium excess; DML95C07_01; Dronning Maud Land, Antarctica; EPICA; European Project for Ice Coring in Antarctica; FB0701; ICEDRILL; Ice drill; Mass spectrometer Finnigan Delta-S; Pre-IPICS; Sampling/drilling ice; δ18O, water; δ Deuterium
    Type: Dataset
    Format: text/tab-separated-values, 600 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    Hydrological and meteorological records from the Vernagtferner Basin - Vernagtbach station, for the years 1970 to 2001 (2012)
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Description: The Vernagtferner region has a long tradition of glaciological research performed by groups from Munich. It started in 1889, when Prof. Sebastian Finsterwalder from the Technical University in Munich produced the first map of a complete glacier based on terrestrial photogrammetry. Since then, numerous maps of the glacier have been made, describing the change in surface elevation for more than a century. These maps form the basis of the geodetic method of glacier mass balance determination, which provides volume changes as average data for the period between two surveys, i.e. typically for 10 years. Since the start of the glaciological method on Vernagtferner in 1964, annual as well as winter and summer mass balance data are available continuously. But only since 1973, the construction of the Vernagtbach station, approximately 1 km below the glacier margin at that time, provided the means to record a larger number of hydrological and meteorological parameters with a temporal resolution of typically 1 hour.
    Keywords: Glaciers Austria; Pegelstation_Vernagtbach; Pegelstation_Vernagtbach_meteorology; UGS; Unmanned gauge station; Unmanned weather station/meteorological observation; UWST; Vernagtferner, Ötztaler Alpen, Austria
    Type: Dataset
    Format: application/zip, 87 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 6
    facet.materialart.
    Unknown
    Table 2: Stream flow measurements at the gauge station Vernagtbach (2011)
    PANGAEA
    In:  Supplement to: Behrens, Horst; Oerter, Hans; Reinwarth, Oskar (1982): Results of tracer experiments with fluorescent dyes on Vernagtferner (Oetztal Alps, Austria) from 1974 to 1982. Zeitschrift für Gletscherkunde und Glazialgeologie, 18(1), 65-83, hdl:10013/epic.38457.d001
    Details
    Publication Date: 2023-01-13
    Description: From 1974 to 1982 repeated tracer tests using fluorescent dyes were carried out in the highly glaciated drainage basin of Vernagtbach. These tests enabled the quantitative determination of the runoff in the forefield of the Vernagtferner, the calculation of travel times of the stream water and estimations of the relative contributions to the entire runoff originating from individual streams. In addition, tracer tests were carried out in the firn area of the glacier resulting in data concerning the storage and travel time of meltwater inside the glacier.
    Keywords: CM; Current meter; DATE/TIME; Number; Pegelstation_Vernagtbach; River discharge; Tracer dilution; UGS; Unmanned gauge station; Vernagtferner, Ötztaler Alpen, Austria; Water stage recorder
    Type: Dataset
    Format: text/tab-separated-values, 44 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 7
    facet.materialart.
    Unknown
    Ice thickness and bedrock elevation data of Nioghalvfjerdsfjorden Glacier from seismic investigations in 1997/1998 (2018)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Description: During an extensive field program, glaciologcal data have been collected at Nioghalvfjerdsfjiorden Glacier (79 North Glacier) in NE-Greenland in 1997 and 1998. A central part of the field work was dedicated to seismic investigations of the floating part of the glacier, determining the ice thickness, the underlying water column depth and the bedrock elevation. The seismic reflexion measurements were carried out with a 24-channel seismograph (Strataview). 600g explosives were used as energy source at a distance of 100 m from the first geophone. Details about the measurements and the project can be found in Mayer et al. (2000).
    Keywords: 79_North_Glacier; Bedrock elevation; Distance; Ice depth equivalent; Ice thickness, glacier; Identification; LATITUDE; LONGITUDE; MULT; Multiple investigations; NE-Greenland-1997-1998; Nioghalvfjerdsfjorden Glacier; Nioghalvfjerdsfjorden glacier project; Surface elevation; UTM Easting, Universal Transverse Mercator; UTM Northing, Universal Transverse Mercator
    Type: Dataset
    Format: text/tab-separated-values, 1000 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unknown
    Main ice thickness and bedrock elevation data of Nioghalvfjerdsfjorden Glacier from seismic investigations in 1997/1998 (2018)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: 79_North_Glacier; Bedrock elevation; Distance; Ice depth equivalent; Ice thickness, glacier; Identification; LATITUDE; LONGITUDE; MULT; Multiple investigations; NE-Greenland-1997-1998; Nioghalvfjerdsfjorden Glacier; Nioghalvfjerdsfjorden glacier project; Surface elevation; UTM Easting, Universal Transverse Mercator; UTM Northing, Universal Transverse Mercator
    Type: Dataset
    Format: text/tab-separated-values, 562 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    Ice thickness and bedrock elevation data of Nioghalvfjerdsfjorden Glacier from seismic investigations in 1997/1998 (2018)
    PANGAEA
    In:  Supplement to: Mayer, Christoph; Reeh, Niels; Jung-Rothenhäusler, Frederik; Huybrechts, Philippe; Oerter, Hans (2000): The subglacial cavity and implied dynamics under Nioghalvfjerdsfjorden Glacier, NE-Greenland. Geophysical Research Letters, 27(15), 2289-2292, https://doi.org/10.1029/2000GL011514
    Details
    Publication Date: 2023-01-13
    Description: During an extensive field program, glaciologcal data have been collected at Nioghalvfjerdsfjiorden Glacier (79 North Glacier) in NE-Greenland in 1997 and 1998. A central part of the field work was dedicated to seismic investigations of the floating part of the glacier, determining the ice thickness, the underlying water column depth and the bedrock elevation. The seismic reflexion measurements were carried out with a 24-channel seismograph (Strataview). 600g explosives were used as energy source at a distance of 100 m from the first geophone. Details about the measurements and the project can be found in Mayer et al. (2000).
    Keywords: 79_North_Glacier; MULT; Multiple investigations; NE-Greenland-1997-1998; Nioghalvfjerdsfjorden Glacier; Nioghalvfjerdsfjorden glacier project
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    Hydrological records from the Vernagtferner Basin - Vernagtbach station, for the year 1977 (2011)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Keywords: DATE/TIME; Glaciers Austria; Pegelstation_Vernagtbach; Pt-100 temperature sensor; River discharge; Temperature, water; UGS; Unmanned gauge station; Vernagtferner, Ötztaler Alpen, Austria; Vertical standpipe monitoring
    Type: Dataset
    Format: text/tab-separated-values, 6120 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...