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Microseismic icequake catalogue, Rutford Ice Stream (West Antarctica), November 2018 to February 2019

This dataset contains ASCII files with hypocenter information, event times and magnitudes for 227029 micro-earthquakes with a magnitude range from -2.0 to -0.3 recorded from a 35-station seismic network located ~40 km upstream of the grounding line of Rutford Ice Stream, West Antarctica. For 87910 of these events, earthquake focal mechanisms (strike/dip/rake) are available. The seismic network, which recordings are the base for the event catalogue, broadly formed a rectangle with 1 km station spacing. Details on the station locations, instrument types and operation periods are included in these data files. The event catalogue encloses the geographic region between 084.142 to 083.760 degrees West and 78.204 to 78.113 degrees South. Events are located between 1.553 and 2.416 km depth. Recording took place between 20th November 2018 and 16th February 2019. The spatio-temporal arrangement of these micro-earthquakes can be used to characterize frictional properties at the ice-bed interface of Rutford Ice Stream.

This work was funded within the BEAMISH project by NERC AFI award numbers NE/G014159/1 and NE/G013187/1. Seismic instruments were provided by NERC SEIS-UK (Loan 1017) and the Incorporated Research Institutions for Seismology (IRIS) through the PASSCAL Instrument Center at New Mexico Tech.

Simple

Alternate title
Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01432
Date (Publication)
2020-11-13
Identifier
http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01432
Custodian
  British Antarctic Survey
High Cross, Madingley Road , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Originator
  UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation - Kufner, S., Brisbourne, A., Smith, A., Hudson, T., Murray, T., Schlegel, R., Kendall, J., Anandakrishnan, S., & Lee, I.
High Cross, Madingley , Cambridge , CB3 0ET , UK
+44 (0)1223 221400
Maintenance and update frequency
unknown Unknown
Keywords
  • NDGO0001
NERC OAI Harvesting
  • NERC_DDC
GCMD Parameter Valids
  • EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets
  • EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Motion/Ice Sheet Motion
  • EARTH SCIENCE > Solid Earth > Seismology
BAS Free-text keywords
  • BEAMISH
  • West Antarctica
  • glacier bed
  • ice stream
  • icequake
  • microseismicity
Use limitation
This data is supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.
Access constraints
otherRestrictions Other restrictions
Other constraints
This data is supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.
Distance
min.: 7.82 m; max.: 248.03 m; mean 26.01 m  
Metadata language
EnglishEnglish
Topic category
  • Geoscientific information
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Begin date
2018-11-20
End date
2019-02-16
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326
Distribution format
Distributor
  Polar Data Centre - British Antarctic Survey
+44 (0)1223 221400
Protocol
http
Name
GET DATA
Function
download Download
Hierarchy level
dataset Dataset

Domain consistency

Measure identification
INSPIRE / Conformity_001

Conformance result

Date
Explanation
See the referenced specification
Pass
No
Statement
See Lineage for quality restrictions applied to the event hypocenters and focal mechanisms. Location errors are given directly in the data file.
File identifier
GB_NERC_BAS_PDC_01432 XML
Metadata language
EnglishEnglish
Hierarchy level
dataset Dataset
Date stamp
2020-11-13
Metadata standard name
NERC profile of ISO19115:2003
Metadata standard version
1.0
Point of contact
  British Antarctic Survey
+44 (0)1223 221400
Dataset URI
http://www.antarctica.ac.uk/dms/metadata.php?id=GB/NERC/BAS/PDC/01432
 
 

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Spatial extent

N
S
E
W
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Keywords


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