Abstract:
Measurements of water discharge, suspended sediment concentration and electrical conductivity during the melt seasons of 2009, 2010, 2011 and 2012 in the proglacial river draining from the tongue of Leverett Glacier, a land-terminating glacier in the south-west of the Greenland Ice Sheet. The measurements were made in a stable bedrock section approximately 2 km downstream from the glacier terminus. Data loggers recorded measurements every 15 minutes from approximately May to August each year. Water depth (stage) was converted to discharge (Q) using season-specific ratings curves derived from repeat dye-dilution injections undertaken across the stage values. Suspended sediment concentration (SSC) was obtained by calibrating turbidity sensor readings with sediment samples taken in-situ and then filtered, dried and weighed. Electrical conductivity (EC) was recorded using a water conductivity probe; the data were filtered for bad values and corrected for temperature, but no smoothing was applied.
These version 2 files are presented as CSV lists, with some summary metadata included as comments at the start of each file; they essentially contain the same data as the previous version files.
Keywords:
Greenland, discharge, electrical conductivity, proglacial, suspended sediment
Tedstone, A. (2017). Proglacial discharge measurements, Leverett Glacier, south-west Greenland (Version None) [Data set]. Polar Data Centre; British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK.. https://doi.org/10.5285/17c400f1-ed6d-4d5a-a51f-aad9ee61ce3d
| Access Constraints: | Requests for data can be made via the UK Polar Data Centre (UK PDC) at BAS. |
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| Use Constraints: | This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ |
| Creation Date: | 2015-11-20 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | Dr Jemma Wadham |
| Role(s) | Investigator |
| Organisation | University of Bristol |
| Name | Prof Peter Nienow |
| Role(s) | Investigator |
| Organisation | University of Edinburgh |
| Name | Dr Douglas Mair |
| Role(s) | Investigator |
| Organisation | University of Aberdeen |
| Name | Dr Andrew Sole |
| Role(s) | Investigator |
| Organisation | University of Aberdeen & University of Edinburgh |
| Name | Dr Dave Chandler |
| Role(s) | Investigator |
| Organisation | University of Bristol |
| Name | Dr Ian Bartholomew |
| Role(s) | Investigator |
| Organisation | University of Edinburgh |
| Name | Dr Tom Cowton |
| Role(s) | Investigator |
| Organisation | University of Edinburgh |
| Name | Dr Andrew Tedstone |
| Role(s) | Investigator, Technical Contact |
| Organisation | University of Edinburgh |
| Name | Dr Roger J A Duthie |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Parent Dataset: | N/A |
| Reference: | Tedstone, A. J. Hydrological controls on Greenland Ice Sheet motion. PhD thesis, University of Edinburgh, 2015. https://www.era.lib.ed.ac.uk/handle/1842/14169 Cowton, T. C. The hydrology of a land-terminating Greenlandic outlet glacier. PhD thesis, University of Edinburgh, 2013. https://www.era.lib.ed.ac.uk/handle/1842/8286 Bartholomew, I. B. Hydrology and dynamics of a land-terminating Greenland outlet glacier. PhD thesis, University of Edinburgh, 2011. https://www.era.lib.ed.ac.uk/handle/1842/7613 Tedstone A., P. Nienow, A. Sole, D. Mair, T. Cowton, I. Bartholomew and M.A. King (2013). Greenland ice sheet motion insensitive to exceptional meltwater forcing. Proceedings of the National Academy of Sciences, 110 (49), 19719-19724. DOI Sole A., P. Nienow, I. Bartholomew, D. Mair, T. Cowton, A. Tedstone and M.A. King (2013). Winter motion mediates dynamic response of the Greenland Ice Sheet to warmer summers. Geophysical Research Letters, 40 (15), 3940-3944. DOI Cowton T, Nienow P, Sole A, Wadham J, Lis G, Bartholomew I, Mair WF and Chandler DM (2013). Evolution of drainage system morphology at a land-terminating Greenland outlet glacier. Journal of Geophysical Research. DOI Chandler DM, Wadham JL, Lis GP, Cowton T, Sole A, Bartholomew I, Telling J, Nienow P, Bagshaw EB, Mair D, Vinen S and Hubbard A (2013). Evolution of the subglacial drainage system beneath the Greenland Ice Sheet revealed by tracers. Nature Geosci., 6(3), pp. 195-198. DOI Bartholomew I, Nienow P, Sole A, Mair D, Cowton T and King MA (2012). Short-term variability in Greenland Ice Sheet motion forced by time-varying meltwater drainage: Implications for the relationship between subglacial drainage system behavior and ice velocity. J. Geophys. Res., 117, F03002. DOI Cowton T, Nienow P, Bartholomew I, Sole A and Mair D (2012). Rapid erosion beneath the Greenland ice sheet. Geology, 40(4), pp. 343 - 346. URL Bartholomew I, Nienow P, Sole A, Mair D, Cowton T, King M and Palmer S (2011). Seasonal variations in Greenland Ice Sheet motion: Inland extent and behaviour at higher elevations. Earth and Planetary Science Letters, 307, pp. 271-278. DOI Bartholomew I, Nienow P, Sole A, Mair D, Cowton T, Palmer S and Wadham J (2011).Supraglacial forcing of subglacial drainage in the ablation zone of the Greenland ice sheet. Geophysical Research Letters, 38, L08502. DOI |
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| Lineage: | See the PhD theses of Tedstone (2015), Cowton (2013) and Bartholomew (2011) for information on the methodology, quality and lineage of this dataset. | |
| Temporal Coverage: | |
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| Start Date | 2009 |
| End Date | 2012 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | 67.065 |
| Northernmost | 67.065 |
| Longitude | |
| Westernmost | -50.217 |
| Easternmost | -50.217 |
| Altitude | |
| Min Altitude | 445m |
| Max Altitude | 445m |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Greenland |
| Detailed Location | Leverett Glacier, south-west Greenland |
| Data Collection: | Sensors - pressure transducers, sonic ranging devices, turbidity probes, electrical conductivity probes |
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| Data Storage: | Data is approx 16MB and is in .txt format. |
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