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Hotrod melt-tip ice-drilling system
No full textThis repository contains source files for the Hotrod melt-tip ice-drilling system. This includes: (1) design files for the winch, (2) machining files for the melt tip, (3) design files for the internal melt-tip electronics and instruments, (4) software codes for the interface, and (5) numerical codes for borehole refreezing simulations. The melt tip machining and interface software files reflect a 2022-09-06 time slice of the HotRod repository at https://github.com/geus-clan/HOTROD-source. Where applicable, the 2022-09-06 GitHub filenames are provided. The GitHub working directory many contain more recent files
Overview of the current status and development of shale gas and shale oil in Europe
No full textThis report is prepared by Karen L. Anthonsen, Niels Schovsbo and Peter Britze, Geological Survey of Denmark and Greenland (GEUS) in October 2016, as part of the EUOGA study (EU Unconventional Oil and Gas Assessment) commissioned by JRC-IET. The report is based on information from European National Geological Surveys received in the period from September 2015 until September 2016
Subsurface monitoring at 1840 m a.s.l. on the southwestern Greenland ice sheet during 2012–2013
No full textThe dataset is fully described in:
Charalampidis, C., Van As, D., Colgan, W. T., Fausto, R. S., Macferrin, M. and Machguth, H.: Thermal tracing of retained meltwater in the lower accumulation area of the Southwestern Greenland ice sheet, Ann. Glaciol., 57(72), 1–10, https://doi.org/10.1017/aog.2016.2, 2016.
Please cite this publication if you use these data.
These data were also used in:
Charalampidis, C. and D. van As (2015). Observed melt-season snow-pack evolution on the Greenland ice sheet. Geol. Surv. Denmark Greenland Bull. 33, 65–68.
Charalampidis, C. (2016). Climatology and firn processes in the lower accumulation area of the Greenland ice sheet. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1372. 81 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9571-8.
Machguth, H., M. MacFerrin, D. van As, J. E. Box, C. Charalampidis, W. T. Colgan, R. S. Fausto, H. A. J. Meijer, E. Mosley-Thompson, and R. S. W. van de Wal (2016). Greenland meltwater storage in firn limited by near-surface ice formation. Nat. Clim. Change 6(4), 390–393.
Description:
The Snow Processes in the Lower Accumulation Zone (SPLAZ) campaign was conducted during the first week of May 2012 at the PROMICE weather station site KAN_U (67°0′N and 47°1′W, at 1840 m a.s.l., Fausto et al., 2021). Firn temperatures were measured by three higher-resolution thermistor strings about 50 m away from the PROMICE station. Two of these thermistor strings were 10 m long, with 0.5 m vertical spacing between thermistors above 5 m depth and 2.5 m vertical spacing below 5 m depth. The third (main) string was 15 m long with 0.25 m vertical spacing between 1 and 3.5 m depth, 0.5 m vertical spacing between 3.5 and 10 m depth, and 2.5 m vertical spacing below 10 m depth.These subsurface temperatures can be found in the file "SPLAZ_data_Charalampidis_etal_2016.xlsx"
The SPLAZ station used RS 100 kΩ negative-temperature coefficient thermistors, which have a thermal time constant of 10 s and a reported uncertainty of ± 0.2°C at temperatures below 0°C. The SPLAZ station also monitored: (i) snow temperatures by six high-precision temperature probes (107 Campbell Scientific; Charalampidis and Van As, 2015), (ii) air temperature via a radiation-shielded 107 Campbell probe, (iii) surface height via an SR50-L sonic ranger and (iv) surface temperature via a downward-facing Eppley PIR longwave radiation sensor. Measurements were collected at 10 min time intervals over a period of 9 months following installation. During the period of observations, three thermistors failed.
Additional files are provided in the dataset: fieldwork pictures, raw thermistor data file and firn density comparison between 2012 and 2013 as used in Machguth et al. (2016).The density and stratigraphy profiles measured at KAN_U in 2012 and 2013 can be found in:
MacFerrin, Michael (2019): Greenland Ice Slabs Data. figshare. Dataset. https://doi.org/10.6084/m9.figshare.8309777.v1
We are grateful to our Snow Processes in the Lower Accumulation Zone (SPLAZ) fellow expedition members A. Mikkelsen, R. Pettersson, K. Lindbäck, A. Hubbard, and S. Doyle. We are also grateful to S. Nielsen of GEUS for technical support, as well as M. Eijkelboom, W. Gorter, J. Lenaerts, and P. Smeets of IMAU for field support.
Additional references:
Charalampidis, C., van As, D., Box, J. E., van den Broeke, M. R., Colgan, W. T., Doyle, S. H., Hubbard, A. L., MacFerrin, M., Machguth, H., and Smeets, C. J. P. P.: Changing surface–atmosphere energy exchange and refreezing capacity of the lower accumulation area, West Greenland, The Cryosphere, 9, 2163–2181, https://doi.org/10.5194/tc-9-2163-2015, 2015.
Fausto, R. S., van As, D., Mankoff, K. D., Vandecrux, B., Citterio, M., Ahlstrøm, A. P., Andersen, S. B., Colgan, W., Karlsson, N. B., Kjeldsen, K. K., Korsgaard, N. J., Larsen, S. H., Nielsen, S., Pedersen, A. Ø., Shields, C. L., Solgaard, A. M., and Box, J. E.: Programme for Monitoring of the Greenland Ice Sheet (PROMICE) automatic weather station data, Earth Syst. Sci. Data, 13, 3819–3845, https://doi.org/10.5194/essd-13-3819-2021, 2021.</p
Review of results, knowledge gaps and recommendations for future work
No full textThis report is prepared by Niels H. Schovsbo, Karen L. Anthonsen, Christian B. Pedersen, and Lisbeth Tougaard, from GEUS, and Susanne Nelskamp, Mart Zijp and Hans Doornenbal, from TNO, as part of the EUOGA study (EU Unconventional Oil and Gas Assessment) commissioned by JRC-IET
Data from North-East Greenland shelf marine sediment core DA17-NG-ST14-171G; Marine conditions and development of the Sirius Water polynya on the North-East Greenland shelf during the Younger Dryas-Holocene
No full textDowncore data obtained from various analyses of Gravity core DA17-NG-ST14-171G (74° 5.413’ N; 19° 25.862’ W, 341 m water depth, 420 cm sediment recovery) and Rumohr lot core DA17-NG-ST14-168R (74° 5.453' N; 19° 25.901' W, 341 m water depth, 89 cm sediment recovery), retrieved from the North-East Greenland shelf about 30 km offshore the Young Sound-Tyrolerfjord onboard the R/V Dana NorthGreen Expedition in 2017
DK-model2019 - Calibration statistics (GIS)
No full textThis folder contains the calibrationstatistics from DK-model2019. Grid files and .shp files are assembled in ArcGIS Pro v.3.0.1. DKmodel2019 setup and calibration is described in GEUS report 2019/31
Geomorfologisk kort over Danmark, 1:200 000, version 3
No full textThe geomorphological map shows landscape types in the Danish landscape.
The specific landscape types have mutual common features, which can be associated to the formation processes that created them. Most of the landscape types are formed by glaciers during the glacial periods and melt water from the glaciers. In post glacial time landscapes are formed in the sea and along coasts. Landscapes are formed along rivers, in lakes and bogs, and wind has formed landscapes. Pre-Quaternary rocks is characterizing the landscape where bedrock is surface near on Bornholm and in northern Jutland. Deep-seated tectonic movements have led to formation of valleys at the surface. Eventually human activity has created landscape by reclaiming areas, digging activities and landfilling.
The landscape types on the geomorphological map are interpreted by means of topographic maps, geological maps and very much the digital terrain model of Denmark. Furthermore, earlier interpretations of the landscape are largely considered.
In version 3 the whole country is mapped. However, the lineation has not been fully mapped in Jutland north of Horsens. Zealand and the islands were compiled in 2013 and revised in 2018. South Jutland and Funen were compiled in 2018, while the north of Jutland was mapped in 2022
Zackenberg CARRA monthly total precipitation, rainfall and 2 m air temperature for 31 years (1991 to 2021)
No full textZackenberg CARRA monthly total precipitation, rainfall and 2 m air temperature for 31 years (1991 to 2021), includes annual, includes min, max, standard deviatio
monthly and annual CARRA data at GEUS AWS sites 1991 to 2021
No full text
monthly and annual CARRA time series data at points
Here are CARRA monthly 2m air temperature (t2m) or total precipitation (tp) or rainfall (rf) at GEUS AWS sites 1991 to 2021 31 years. The data are in comma separated files (.csv) for static point locations in Greenland. The data for each location is the monthly or annual average (or total, for precipitation) of daily nearest-neighbor on the 2.5 km CARRA grid point.
The original source is the Copernicus Climate Change Service (C3S) Climate Data Store (CDS) produced by C3S. The data produced by contractors under C3S (ECMWF) belongs to C3S although they are public and free to use.
includes simple graphics
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