Ice tilt time-series from sensors installed in boreholes drilled into Khumbu Glacier, Nepal, in 2017 and 2018 as part of EverDrill research project - VERSION 1.0

The datasets are ice tilt time series from strings of accelerometers, each located at a discrete depth within one of three boreholes into Khumbu Glacier, Nepal. Ice deformation can be derived from this tilt data, but has not yet been calculated. Boreholes were drilled in May 2017 and 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. Supporting borehole information is provided as a related dataset.

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

***** PLEASE BE ADVISED TO USE VERSION 2.0 DATA *****

The VERSION 2.0 data set (see ''Related Data Set Metadata'' link below) which contains an additional 11 months of measurements.

Alternate title: Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01128

Date (Publication): 2021-07-16

Citation identifier: http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01128

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey		pdc@bas.ac.uk	Custodian
UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation	Hubbard, B., Miles, K., Doyle, S., Quincey, D., & Miles, E.	pdc@bas.ac.uk	Originator

Maintenance and update frequency: Unknown

Keywords

NDGO0001

NERC OAI Harvesting

NERC_DDC

GCMD Parameter Valids

EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Motion/Ice Sheet Motion
EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glaciers
EARTH SCIENCE > Cryosphere > Snow/Ice > Ice Motion

BAS Free-text keywords

Ice boreholes
Ice deformation
Khumbu Glacier, Nepal

Use limitation: 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/.

Access constraints: Other restrictions

Other constraints: 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/.

Language: English

Topic category

Climatology, meteorology, atmosphere
Environment

Begin date: 2017-05-17

End date: 2018-11-13

Reference system identifier: OGP / urn:ogc:def:crs:EPSG::4326

Distribution format

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Polar Data Centre - British Antarctic Survey		pdc@bas.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
http		GET DATA

Hierarchy level: Dataset

Domain consistency

Measure identification: INSPIRE / Conformity_001

Conformance result

Title: INSPIRE Data Specification on unknown theme Guidelines

Date

Explanation: See the referenced specification

Pass: No

Statement: Detailed methodology, including accuracy estimation, is presented in the referenced publication.

Resolution:

The accelerometers installed in 2017 have an accuracy of 800 mV g-1 stated by the manufacturer (where g is the normalised gravity vector). A further calibration was carried out (details in Doyle et al. (2018)), resulting in the absolute accuracy of the tilt sensors being determined to be less than ± 1 degree.

The digital sensors installed in 2018 also measured temperature, however, these were not calibrated and are therefore only accurate to ± 0.5 degrees Celsius.