This MOORE_readme.txt file was generated on [20200103] by Jeffrey Moore
Links to Publication Field updated. 2021-12-09, SES

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GENERAL INFORMATION
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1. Title of Dataset 
Aletsch Glacier subglacial water pressure and temperature data

2. Author Information

  Principal Investigator Contact Information
        Name: Lorenz M. Grämiger
           Institution: Department of Earth Sciences, ETH Zurich, Zurich, Switzerland
           Address: Sonneggstrasse 5, 8092 Zurich, Switzerland
           Email: graemiger.lorenz@gmail.com 

  Associate or Co-investigator Contact Information
        Name: Jeffrey R. Moore
           Institution: Department of Geology and Geophysics, University of Utah
           Address: 115 S 1460 E, ROOM 383, SALT LAKE CITY, UT
           Email: jeff.moore@utah.edu

3. Date of data collection (range)
	Borehole P1: 12-07-2013 09:28:09 to 08-08-2014 09:11:14
	Borehole P2: 16-07-2013 05:00:03 to 08-08-2014 22:10:44

4. Geographic location of data collection (where was data collected?): 
	Lat/Long (approx): 46.45510, 8.07696 (WGS84)
	Ice surface elevation P1: 2358 m
	Ice surface elevation P2: 2355 m

5. Information about funding sources that supported the collection of the data:
	Swiss National Science Foundation (projects 135184 and 146593)


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SHARING/ACCESS INFORMATION
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1. Licenses/restrictions placed on the data:
	CC BY NC

2. Links to publications that cite or use the data:
	
Grämiger, L. (2017). Beyond debuttressing: Thermo-hydro-mechanical rock slope damage during glacial cycles (Doctoral dissertation, ETH Zurich). https://www.research-collection.ethz.ch/handle/20.500.11850/183675

Grämiger, L. M., Moore, J. R., Gischig, V. S., Loew, S., Funk, M., & Limpach, P. (2020). Hydromechanical rock slope damage during Late Pleistocene and Holocene glacial cycles in an Alpine valley. Journal of Geophysical Research: Earth Surface, 125(8), e2019JF005494.  https://doi.org/10.1029/2019JF005494

3. Links to other publicly accessible locations of the data:
	N/A

4. Links/relationships to ancillary data sets:
	N/A

5. Was data derived from another source?
	No

6. Recommended citation for the data:
Lorenz M. Grämiger, Jeffrey R. Moore, Valentin S. Gischig, Simon Loew, Martin Funk, Philippe Limpach. 2020. Aletsch Glacier subglacial water pressure and temperature data. The Hive: University of Utah Research Data Repository.
	

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DATA & FILE OVERVIEW
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1. File List
   A. Filename: Aletsch1.zip
      Short description: Contains five timeseries data items for borehole P1:    
	- Aletsch1_AP: AP air pressure (bar)
	- Aletsch1_AT: air temperature (°C)
	- Aletsch1_P1: absolute subglacial water pressure (bar)
	- Aletsch1_P1_AP: P1-AP subglacial water pressure corrected for air pressure (bar)
	- Aletsch1_TOB1: subglacial water temperature (°C)
        
   B. Filename: Aletsch2.zip
      Short description: Contains five timeseries data items for borehole P2:        
	- Aletsch2_AP: AP air pressure (bar)
	- Aletsch2_AT: air temperature (°C)
	- Aletsch2_P1: absolute subglacial water pressure (bar)
	- Aletsch2_P1_AP: P1-AP subglacial water pressure corrected for air pressure (bar)
	- Aletsch2_TOB1: subglacial water temperature (°C)

2. Relationship between files:        
	Similar data series generated from boreholes P1 and P2

3. Additional related data collected that was not included in the current data package:
	None

4. Are there multiple versions of the dataset? 
	No


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METHODOLOGICAL INFORMATION
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1. Description of methods used for collection/generation of data: 
	Two ice boreholes (P1 and P2) were drilled to the glacier bed in July 2013 using a hot water system. The main subglacial drainage channel was not encountered by either borehole. Both holes were equipped with pressure sensors attached to a 500 m long Kevlar encased cable. 

2. Methods for processing the data: 
	Pressure data combined with simultaneous light plummet measurements allowed a correction of the sensor depth from the measured cable length caused by minor borehole inclination. Water pressure measurements were corrected for air pressure, which was continuously measured at the data logger on the ice surface. 

3. Instrument- or software-specific information needed to interpret the data:
	We used a piezo-resistive pressure sensor (Serie 36 X W by KELLER AG, measurement precision of 50 mbar) together with a data logger with remote download capability. 

4. Standards and calibration information, if appropriate:
	N/A

5. Environmental/experimental conditions:
	P1 and P2 were separated by a distance of 32 m and had ice surface altitudes of 2358 m and 2355 m, respectively. The drilling depth was ~500 m, while ice thickness estimations from radar measurements were 473 m at P1 and 467 m at P2.

6. Describe any quality-assurance procedures performed on the data:
	N/A

7. People involved with sample collection, processing, analysis and/or submission:
	Lorenz Grämiger, Simon Loew, Martin Funk


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DATA-SPECIFIC INFORMATION FOR: All Files
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1. Number of variables:
	Each .txt file gives time series data for one variable, as denoted by the file name
	Each .txt file contains two columns: 1: time, 2: value

2. Number of cases/rows: 
	Number of rows varies with time series duration

3. Variable List
	See above

4. Missing data codes:
	9.9998900000000000e+11

5. Specialized formats of other abbreviations used
	All times are Matlab (R2081b) serial date format