READ ME File For 'Probedata.csv' Dataset DOI: 10.5258/SOTON/XXXXXX Date that the file was created: March, 2021 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Jane Hart, University of Southampton [ORCID ID 0000-0002-2348-3944] Date of data collection: 10/09/2009 to 22/08/2010 Information about geographic location of data collection: Iceland, Skalafellsjokull Related projects: Glacsweb -------------------------- SHARING/ACCESS INFORMATION -------------------------- Licenses/restrictions placed on the data, or limitations of reuse:none Recommended citation for the data: This dataset supports the publication: AUTHORS: J.K. Hart, D.S. Young, N.R. Baurley, B. A. Robson & K. Martinez TITLE:The seasonal evolution of subglacial drainage pathways beneath a soft-bedded glacier JOURNAL:Nature: Communications Earth & Environment PAPER DOI IF KNOWN: Links to other publicly accessible locations of the data:n/a Links/relationships to ancillary or related data sets: n/a -------------------- DATA & FILE OVERVIEW -------------------- This dataset contains: #[File list (filenames, directory structure (for zipped files) and brief description of all data files)] [probedata.csv sensor data from glacsweb probes] Water pressure and case stress data from in situ Glacsweb probes in the till, probe 21 (in 0.2 - 0.4 m depth of the till, ice thickness 58m)and probe 25 (in 0.2 - 0.4 m depth of the till, ice thickness 60m). Relationship between files, if important for context: Additional related data collected that was not included in the current data package:n/a If data was derived from another source, list source:n/a If there are there multiple versions of the dataset, list the file updated, when and why update was made:n/a -------------------------- METHODOLOGICAL INFORMATION -------------------------- Description of methods used for collection/generation of data: Hart, J.K., Martinez, K., Basford, P.J., Clayton, A.I., Bragg, G.M., Ward, T. and Young, D.S., 2019. Surface melt‐driven seasonal behaviour (englacial and subglacial) from a soft‐bedded temperate glacier recorded by in situ wireless probes. Earth Surface Processes and Landforms, 44(9), pp.1769-1782. Methods for processing the data: Water pressure data was calibrated in the field to measured water levels in the boreholes after deployment, and on subsequent field days.The Water pressure is converted to meters water eqquilent and then devided by the glacier depth (measured by ground penetrating radar and GPS - see Hart, J.K., Rose, K.C., Clayton, A. and Martinez, K., 2015. Englacial and subglacial water flow at Skálafellsjökull, Iceland derived from ground penetrating radar, in situ Glacsweb probe and borehole water level measurements. Earth Surface Processes and Landforms, 40(15), pp.2071-2083.) Case stress measured by The case stress represents the force applied to the probes per unit area and was measured by strain gauges that measured the relative compression and extension of the probe case in two perpendicular planes. This was calibrated using an Instron 5560 tension/compression experimental machine with a nitrogen cooled chamber, which operated at a mean temperature of 1.3oC. Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers: Glacsweb sensor probes Standards and calibration information, if appropriate: see above Environmental/experimental conditions: Sensors placed into glacier Describe any quality-assurance procedures performed on the data:Readings from non-functioning sensors was removed People involved with sample collection, processing, analysis and/or submission: Hart, J.K., Martinez, K. Basford, P.J. and Glacsweb Iceland Team 2008. -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Number of variables:4 Number of cases/rows: 8328 Variable list, defining any abbreviations, units of measure, codes or symbols used: Date, Hour, Water Pressure meters water equivilent as a percentage of glacier depth, case stress kPa Missing data codes:n/a Specialized formats or other abbreviations used:n/a