DOI: 10.6084/m9.figshare.7497968
title: SAFIRE ApRES Datasets

description: Datasets from the Subglacial Access and Fast Ice Research Experiment (SAFIRE) as published in the paper by Doyle et al. entitled "Physical conditions of fast glacier flow: 3. Seasonally-evolving ice deformation on Store Glacier, West Greenland". Please cite this paper if using this data. Citation below.<br>T.J. Young, P. Christoffersen, S.H. Doyle, K.W. Nicholls, C. L. Stewart, B. Hubbard, A. Hubbard, L.B. Lok, P.V. Brennan, D. I. Benn, A. Luckman, M. Bougamont. Physical conditions of fast glacier flow: 3. Seasonally-evolving ice deformation on Store Glacier, West Greenland. Journal of Geophysical Research: Earth Surface.<br>Field site: 30.3 km from the terminus of Store Glacier in West Greenland (S30; 70° 31' N; 049° 55' W; 982 m a.s.l.).<br><b>Contents:</b><br>1. <b>ApRES_displacement_14a_Depth.csv</b>: Daily time series of ApRES-measured depth of internal layer reflectors for Deployment 14a (08 May 2014 to 16 July 2014).<br>2. <b>ApRES_displacement_14b_Depth.csv</b>: As per dataset (1) for Deployment 14b (05 August 2014 to 05 December 2014). <br>3. <b>ApRES_displacement_15X_Depth.csv</b>: As per dataset (1) for Deployment 15 (06 July 2015 to 07 May 2016). <br>4. <b>ApRES_displacement_14a_Displacement.csv</b>: Daily time series of ApRES-measured displacement of internal layer reflectors corresponding to depths presented in dataset (1) for Deployment 14a (08 May 2014 to 16 July 2014).<br>5. <b>ApRES_displacement_14b_Displacement.csv</b>: As per dataset (4) corresponding to depths presented in dataset (2) for Deployment 14b (05 August 2014 to 05 December 2014). <br>6. <b>ApRES_displacement_15X_Displacement.csv</b>: As per dataset (4) corresponding to depths presented in dataset (3) for Deployment 15 (06 July 2015 to 07 May 2016). <br>7. <b>ApRES_displacement_14a_Displacementerror.csv</b>: Daily time series of ApRES-measured displacement error of internal layer reflectors corresponding to depths presented in dataset (1) for Deployment 14a (08 May 2014 to 16 July 2014).<br>8. <b>ApRES_displacement_14b_Displacementerror.csv</b>: As per dataset (7) corresponding to depths presented in dataset (2) for Deployment 14b (05 August 2014 to 05 December 2014). <br>9. <b>ApRES_displacement_15X_Displacementerror.csv</b>: As per dataset (7) corresponding to depths presented in dataset (3) for Deployment 15 (06 July 2015 to 07 May 2016). <br>10. <b>ApRES_displacement_14a_Displacementmodelled.csv</b>: Daily time series of ApRES-modelled full-column displacement (vertical velocity) for Deployment 14a (08 May 2014 to 16 July 2014).<br>11. <b>ApRES_displacement_14b_Displacementmodelled.csv</b>: As per dataset (10) for Deployment 14b (05 August 2014 to 05 December 2014). <br>12. <b>ApRES_displacement_15X_Displacementmodelled.csv</b>: As per dataset (10) for Deployment 15 (06 July 2015 to 07 May 2016). <br>13. <b>ApRES_vsr_14a_Vsr.csv</b>: Daily time series of ApRES-modelled full-column vertical strain rate for Deployment 14a (08 May 2014 to 16 July 2014).<br>14. <b>ApRES_vsr_14b_Vsr.csv</b>: As per dataset (13) for Deployment 14b (05 August 2014 to 05 December 2014). <br>15. <b>ApRES_vsr_15X_Vsr.csv</b>: As per dataset (13) for Deployment 15 (06 July 2015 to 07 May 2016). <br>16. <b>bedtopo_14a.csv</b>: Daily time series of distance travelled, change in bed elevation, and surface GPS source (Trimble GPS station or GIMP DEM) corresponding to Deployment 14a (08 May 2014 to 16 July 2014).<br>17: <b>bedtopo_14b.csv</b>: As per dataset (16) corresponding to Deployment 14b (05 August 2014 to 05 December 2014). <br>18: <b>bedtopo_15X.csv</b>: As per dataset (16) corresponding to Deployment 15 (06 July 2015 to 07 May 2016). <br>19. <b>veltaub_14b.csv</b>: Daily time series of surface velocity, basal velocity, and basal traction calculated from a Trimble GPS Unit and borehole-installed temperature sensors and tiltmeters. This dataset temporally corresponds to that of Deployment 14b. This dataset was derived from those published in Doyle et al. (2018): https://doi.org/10.6084/m9.figshare.5745294.<br>Please also see the companion papers by Doyle et al. and Hofstede et al.:<br>S.H. Doyle, P. Christoffersen, B.P. Hubbard, T.J. Young, C. Hofstede, M. Bougamont, J.E. Box, A.L. Hubbard. (2018) Physical conditions of fast glacier flow: 1. Measurements from boreholes drilled to the bed of Store Glacier, West Greenland. Journal of Geophysical Research: Earth Surface, 123(2): 324-328. doi: 10.1002/2017JF004529.<br>C. Hofstede, P. Christoffersen, B.P. Hubbard, S.H. Doyle, T.J. Young, A. Diez, O. Eisen, A.L. Hubbard. (2018) Physical conditions of fast glacier flow: 2. Variable extent of anisotropic ice and soft basal sediment from seismic reflection data acquired on Store Glacier, West Greenland. Journal of Geophysical Research: Earth Surface, 123(2): 349-362. doi: 10.1002/2017JF004297.<br>