Chandler, David M; Wadham, Jemma; Nienow, Peter; Doyle, Samuel H; Tedstone, Andrew; Telling, Jon; Hawkings, Jonathan; Alcock, Jonathan; Linhoff, Benjamin; Hubbard, Alun L (2021): Westwards component of ice surface velocity on the Greenland Ice Sheet measured in spring/summer 2012 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926843
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Published: 2021-01-21 • DOI registered: 2021-10-07
Abstract:
Ice surface motion was recorded by five dual-frequency Leica SR520 GPS receivers deployed on poles drilled 2 m into the ice surface, within 700 m of Moulin L41A at 66.97N -49.27E. GPS data were post-processed kinematically (King, 2004, http://dx.doi.org/10.3189/172756504781829747) with Track v.1.27 software (Chen, 1998, Ph.D. thesis, Cambridge MA, USA) against bedrock-mounted reference stations using a precise ephemeris from the International GNSS Service )Dow et al., 2009, http://dx.doi.org/10.1007/s00190-008-0300-3). Reference stations were located 1 km from the terminus of Russell Glacier and at Kellyville, giving baseline lengths less than 41 km. Due to gaps in the time series caused by power outage, we averaged the horizontal velocities recorded at the five stations with the fewest gaps to give a single record. Positions were recorded at 30 s intervals; 1-hr means were then smoothed using a 5-point binomial filter. Since there was generally little difference in velocity between the stakes, the mean velocity across the network gives a better indication of the seasonal pattern of ice motion with fewer gaps than in the individual records. Velocities are centred differences of hourly displacements. GPS stakes required periodic re-drilling as they gradually melted out.
Related to:
Chandler, David M; Wadham, Jemma; Nienow, P W; Doyle, Samuel H; Tedstone, Andrew; Telling, Jon; Hawkings, Jonathan; Alcock, Jonathan; Linhoff, Benjamin; Hubbard, Alun L (2021): Rapid development and persistence of efficient subglacial drainage under 900 m-thick ice in Greenland. Earth and Planetary Science Letters, 566, 116982, https://doi.org/10.1016/j.epsl.2021.116982
Chandler, David M; Wadham, Jemma; Nienow, Peter; Doyle, Samuel H; Tedstone, Andrew; Telling, Jon; Hawkings, Jonathan; Alcock, Jonathan; Linhoff, Benjamin; Hubbard, Alun L (2021): Ice ablation record from the Greenland Ice Sheet measured in spring/summer 2012 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926842
Chandler, David M; Wadham, Jemma; Nienow, Peter; Doyle, Samuel H; Tedstone, Andrew; Telling, Jon; Hawkings, Jonathan; Alcock, Jonathan; Linhoff, Benjamin; Hubbard, Alun L (2021): Proglacial river discharge from the Greenland Ice Sheet measured in spring/summer 2012 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926841
Chandler, David M; Wadham, Jemma; Nienow, Peter; Doyle, Samuel H; Tedstone, Andrew; Telling, Jon; Hawkings, Jonathan; Alcock, Jonathan; Linhoff, Benjamin; Hubbard, Alun L (2021): Sulfur hexafluoride (SF6) traces of Moulin L41A on the Greenland Ice Sheet measured in summer 2012 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926850
Chandler, David M; Wadham, Jemma; Nienow, Peter; Doyle, Samuel H; Tedstone, Andrew; Telling, Jon; Hawkings, Jonathan; Alcock, Jonathan; Linhoff, Benjamin; Hubbard, Alun L (2021): Supraglacial river discharge into Moulin L41A on the Greenland Ice Sheet measured in spring/summer 2012 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.926844
Coverage:
Latitude: 66.970000 * Longitude: -49.270000
Date/Time Start: 2012-05-28T15:00:00 * Date/Time End: 2012-08-11T19:00:00
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Chandler, David M | Geocode – UTC-3 | ||
| 2 | Ice surface velocity | Ice surf V | m/h | Chandler, David M | GPS receiver (Leica SR520) | Stake G1 |
| 3 | Ice surface velocity | Ice surf V | m/h | Chandler, David M | GPS receiver (Leica SR520) | Stake G3 |
| 4 | Ice surface velocity | Ice surf V | m/h | Chandler, David M | GPS receiver (Leica SR520) | Stake G8 |
| 5 | Ice surface velocity | Ice surf V | m/h | Chandler, David M | GPS receiver (Leica SR520) | Stake G9 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3125 data points
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