Full Record - Locations and lengths of boreholes drilled into Khumbu Glacier, Nepal, in 2017 and 2018 as part of EverDrill research project

Locations and lengths of boreholes drilled into Khumbu Glacier, Nepal, in 2017 and 2018 as part of EverDrill research project

GB/NERC/BAS/PDC/01125

Abstract:
The dataset lists information about boreholes drilled by hot water into Khumbu Glacier, Nepal. Boreholes were drilled in May 2017 and May 2018 to investigate the internal properties of Khumbu Glacier, specifically ice thickness, temperature, deformation and structure, as part of the NERC-funded 'EverDrill' research project. The information provided includes each borehole's ID, length, location (at the time of drilling), elevation and instrumentation.

Funding was provided by the NERC grant NE/P00265X/1 and NE/P002021/1.

Citation:
Hubbard, B., Miles, K., Quincey, D., & Miles, E. (2019). Locations and lengths of boreholes drilled into Khumbu Glacier, Nepal, in 2017 and 2018 as part of EverDrill research project (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/65140444-b5fa-4a5e-9ab4-e86c106051e2

Access Data

GET DATA

https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=65140444-b5fa-4a5e-9ab4-e86c106051e2

PROJECT HOME PAGE

https://gtr.ukri.org/projects?ref=NE%2FP002021%2F1

RELATED DATA SET METADATA

License

Access:	No restrictions apply.
Use:	This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Authors

Name	UK Polar Data Centre
Role(s)	Metadata Author
Organisation	British Antarctic Survey

Name	Bryn Hubbard
Role(s)	Investigator, Technical Contact
Organisation	Aberystwyth University

Name	Katie Miles
Role(s)	Investigator
Organisation	Aberystwyth University

Name	Duncan Quincey
Role(s)	Investigator
Organisation	University of Leeds

Name	Evan Miles
Role(s)	Investigator
Organisation	University of Leeds

Basic Information

Creation Date:	2019-01-09
Dataset Progress:	Complete
Dataset Language:	English
ISO Topic Categories:	Climatology/Meteorology/Atmosphere Environment
Parameters:	Cryosphere > Glaciers/Ice Sheets > Glacier Thickness/Ice Sheet Thickness Cryosphere > Glaciers/Ice Sheets > Glaciers

Additional Information

Reference:	Miles, K.E., Hubbard, B., Quincey, D.J., Miles, E.S., Sherpa, T.C., Rowan, A.V. and Doyle, S.H. (2018), Polythermal structure of a Himalayan debris-covered glacier revealed by borehole thermometry, Scientific Reports, 8, 16825.
Lineage/Methodology:	Borehole information was collected while boreholes were drilled using a hot-water drill in 2017 and 2018 on Khumbu Glacier, Nepal. Location and elevation were measured with a handheld GPS unit. Borehole depth was measured from the length of drilling hose in the borehole at the time when drilling progress ceased, and confirmed from the length of sensor cable lowered into the borehole, where applicable. Boreholes that were instrumented with sensors (to measure ice temperature, tilt, hydrological information) or that were logged by an optical televiewer (OPTV) are noted.

Extent

Temporal Coverage:
Start Date	2017-04-01
End Date	2017-05-31

Start Date	2018-04-01
End Date	2018-05-31

Spatial Coverage:
Latitude
Southernmost	27.94
Northernmost	27.99
Longitude
Westernmost	86.16
Easternmost	86.85
Altitude
Min Altitude	4884.4 masl
Max Altitude	5207 masl
Depth
Min Depth	N/A
Max Depth	N/A

Location:
Location	Nepal
Detailed Location	Khumbu Glacier, Himalaya

Storage

Data Storage:	All data are listed in one comma-separated ASCII file (*.csv format), which is ~2 KB in size. The file holds the data for each borehole (rows). 'Drill Site' refers to the EverDrill site on the glacier; 'Borehole #' to the full borehole ID; 'Borehole Length (m)' the full length of each borehole, in metres; 'GPS Location' the location of each borehole (WGS 84); and 'Elevation (m a.s.l.)' the height above sea level of the surface of each borehole, in metres. 'Strings'' lists, where relevant, the type of sensor string the borehole was instrumented with: 'Thermistor' measured ice temperature; 'Tilt' measured ice deformation; and 'Basal Probe' measured hydrological features. If the boreholes were logged using the optical televiewer, a 'Y' is marked in the final 'OPTV' column.

Data Storage:

All data are listed in one comma-separated ASCII file (*.csv format), which is ~2 KB in size. The file holds the data for each borehole (rows). 'Drill Site' refers to the EverDrill site on the glacier; 'Borehole #' to the full borehole ID; 'Borehole Length (m)' the full length of each borehole, in metres; 'GPS Location' the location of each borehole (WGS 84); and 'Elevation (m a.s.l.)' the height above sea level of the surface of each borehole, in metres. 'Strings'' lists, where relevant, the type of sensor string the borehole was instrumented with: 'Thermistor' measured ice temperature; 'Tilt' measured ice deformation; and 'Basal Probe' measured hydrological features. If the boreholes were logged using the optical televiewer, a 'Y' is marked in the final 'OPTV' column.