READ ME File For 'Probedata.csv' Dataset DOI: 10.5258/SOTON/D1794 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 READ ME File For 'Datacycle3' Dataset DOI: 10.5258/SOTON/XXXXXX Date that the file was created: March, 2021 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Jane Hart, University of Southampton [OPTIONAL add ORCID 0000-0002-2348-3944] Date of data collection: 24/11/2012-27/12/2012 Information about geographic location of data collection:Skalafellsjokull, Iceland 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)] [Datacycle3.csv Additional data for this cycle not provided in the other data sets, date, bed seperation Relationship between files, if important for context:n/a Additional related data collected that was not included in the current data package:n/a If data was derived from another source, list source: 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., Robson, B.A. and Young, D.S., 2019. Surface melt driven summer diurnal and winter multi-day stick-slip motion and till sedimentology. Nature communications, 10(1), pp.1-11. Methods for processing the data: see reference above Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers:n/a Standards and calibration information, if appropriate:n/a Environmental/experimental conditions: see ref above Describe any quality-assurance procedures performed on the data: missing values removed from data People involved with sample collection, processing, analysis and/or submission:J.K.Hart and K. Martinez -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Number of variables:2 Number of cases/rows: 35 Variable list, defining any abbreviations, units of measure, codes or symbols used: date, bed seperation (m) Missing data codes:n/a Specialized formats or other abbreviations used:n/a READ ME File For 'PDD&Rain' Dataset DOI: 10.5258/SOTON/XXXXXX Date that the file was created: March, 2021 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Jane Hart, University of Southampton [OPTIONAL add ORCID 0000-0002-2348-3944] Date of data collection: 01/08/2012-04/10/2014 Information about geographic location of data collection:Skalafellsjokull, Iceland 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)] [PDD&Raindata.csv Positive degree dayand Rainfall data Relationship between files, if important for context:n/a Additional related data collected that was not included in the current data package:n/a If data was derived from another source, list source: 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: J.K. Hart, D.S. Young, N.R. Baurley, B. A. Robson & K. Martinez, The seasonal evolution of subglacial drainage pathways beneath a soft-bedded glacier. Nature: Communications Earth & Environment Methods for processing the data:Details of daily PDD and rainfall in above.Temperature and precipitation from Icelandic Meteorological Station at Hofn. Parameters: Grid spacing 30m, Lapse rate 0.00826 degrees/m, Temperature altitude 17.5756m, Base Station altitude 728.094m, Albedo snow threshold 0.45, Ice Degree day Factor 7.7 mm/degC/day, Snow Degree day Factor 5.6 mm/degC/day, Max short temp gap (hours) 2 Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers:n/a Standards and calibration information, if appropriate:n/a Environmental/experimental conditions: see ref above Describe any quality-assurance procedures performed on the data: missing values removed from data People involved with sample collection, processing, analysis and/or submission:Hart, J.K., Young, D.S., Martinez, K. -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Number of variables:1= Number of cases/rows: 2455 Variable list, defining any abbreviations, units of measure, codes or symbols used: Snowline height (m) from MODIS data, Hofn temperature from Met station degrees C, Base Sation temperature degrees C, Degree Day Factor at the Base Station, S vol = Melt volume from the Sultartungnajökull catchment cubic m, Full vol = Melt volume from Skalafellsjokull cubic m, S. Rainfall = Rainfall from Sultartungnajökull catchment cubic m, Full rainfall = Rainfall from Skalafellsjokull cubic m, H vol = Melt volume from Heinabergsjökull cubic m, H Rainfall = Rainfall from Heinabergsjökull cubic m Missing data codes:n/a Specialized formats or other abbreviations used:n/a READ ME File For 'Sentinelvelocity' Dataset DOI: 10.5258/SOTON/XXXXXX Date that the file was created: March, 2021 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Jane Hart, University of Southampton [OPTIONAL add ORCID 0000-0002-2348-3944] Date of data collection: 17/08/2017-18/10/2019 Information about geographic location of data collection:Skalafellsjokull, Iceland 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)] [Sentinelvelocity.csv 11 day centerline velocity, scaled velocity, RMS error % Relationship between files, if important for context:n/a Additional related data collected that was not included in the current data package:n/a If data was derived from another source, list source: 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: J.K. Hart, D.S. Young, N.R. Baurley, B. A. Robson & K. Martinez, The seasonal evolution of subglacial drainage pathways beneath a soft-bedded glacier. Nature: Communications Earth & Environment Methods for processing the data: see reference above Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers:n/a Standards and calibration information, if appropriate:n/a Environmental/experimental conditions: see ref above Describe any quality-assurance procedures performed on the data: missing values removed from data People involved with sample collection, processing, analysis and/or submission:N.R.Baurley and B.A.Robson -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Number of variables:3 Number of cases/rows: 66 Variable list, defining any abbreviations, units of measure, codes or symbols used: meter per annum, percent Missing data codes:n/a Specialized formats or other abbreviations used:n/a READ ME File For 'Stadara discharge& GPS velocity' Dataset DOI: 10.5258/SOTON/XXXXXX Date that the file was created: March, 2021 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Jane Hart, University of Southampton [OPTIONAL add ORCID 0000-0002-2348-3944] Date of data collection: 01/08/2012-04/10/2014 Information about geographic location of data collection:Skalafellsjokull, Iceland 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)] [StadaraDischarge&GPSvelocity.csv Daily discharge data from image processed images and GPS data Relationship between files, if important for context:n/a 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: Young, D.S., Hart, J.K. and Martinez, K., 2015. Image analysis techniques to estimate river discharge using time-lapse cameras in remote locations. Computers & Geosciences, 76, pp.1-10. Methods for processing the data:Details of image processing of images in Young et al (2015). Surface ice velocity was measured from 2008-2012 with a TOPCON Legacy-H L1/L2 GPS (1km baseline) and from 2012-13 with an additional array of 4 dual frequency Leica System 1200 GPS systems at 15 second sampling rate, continuously during the summer and 2 hours a day during the winter (300 m baseline). The GPS data was processed with the ephemeris from the International GPS Service (IGS) stations using TRACK (v. 1.24), the kinematic software package developed by Massachusetts Institute of Technology (MIT) Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers:n/a Standards and calibration information, if appropriate: Environmental/experimental conditions: see ref above Describe any quality-assurance procedures performed on the data: Image processing images with >2s.d. were removed. GPS outliers were removed. People involved with sample collection, processing, analysis and/or submission:Hart, J.K., Young, D.S., Martinez, K. Basford, P.J. and Glacsweb Iceland Team 2012 -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Number of variables:2 Number of cases/rows: 489 Variable list, defining any abbreviations, units of measure, codes or symbols used: Daily discharge cubic meters, Scaled (based on glacier depth) average of 3 GPS units on the glacier surface m per annum. Missing data codes:n/a Specialized formats or other abbreviations used:n/a READ ME File For 'SkalNorthInputOutput' Dataset DOI: 10.5258/SOTON/XXXXXX Date that the file was created: July, 2021 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Jane Hart, University of Southampton [OPTIONAL add ORCID 0000-0002-2348-3944] Date of data collection: 01/01/2008-31/08/2010 Information about geographic location of data collection:Skalafellsjokull, Iceland 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)] [SkalNorthInputsOutputs.csv, discharge, melt+rainfall Relationship between files, if important for context:n/a Additional related data collected that was not included in the current data package:n/a If data was derived from another source, list source: 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: in Methodology Methods for processing the data: see reference above Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers:n/a Standards and calibration information, if appropriate:n/a Environmental/experimental conditions: see ref above Describe any quality-assurance procedures performed on the data: missing values removed from data People involved with sample collection, processing, analysis and/or submission:J.K.Hart and K. Martinez -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Number of variables:3 Number of cases/rows: 2471 Variable list, defining any abbreviations, units of measure, codes or symbols used: date, discharge (m^3), melt + rainfall (m^3) Missing data codes:n/a Specialized formats or other abbreviations used:n/a