23dbd529-3a57-4933-bb9d-16ee1c85fda0 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2025-08-04 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Passive- and active-source seismic data recorded with Distributed Acoustic Sensing on Eastwind Glacier, Antarctica, February 2024 2025-08-04 creation 2025-08-04 revision 2025-08-04 publication 2025-08-04 released 1.0 https://doi.org/10.5285/23dbd529-3a57-4933-bb9d-16ee1c85fda0 doi GB/NERC/BAS/PDC/02082 https://data.bas.ac.uk/ NE/S00677X/1 award Please cite this item as: Booth, A., Agnew, R., Pretorius, A., Pearce, E., Cameron, E., Hehlen, M., Karplus, M., May, D., Nakata, N., Seldon, Y., Summers, P., Tulaczyk, S., & Young, T. (2025). Passive- and active-source seismic data recorded with Distributed Acoustic Sensing on Eastwind Glacier, Antarctica, February 2024 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/23dbd529-3a57-4933-bb9d-16ee1c85fda0 This dataset is a recording of passive seismic responses on Eastwind Glacier (Windless Bight, Ross Island, Antarctica), also containing 212 active-source seismic shots made with a hammer and plate source. The data are recorded using fibre optic distributed acoustic sensing (DAS), with a 2.2 km cable length connected into a FEBUS Optics A1 interrogator. The acquisitions take place over a two-hour period from 23:46 UTC on 2024-02-06, to 01:54 UTC on 2024-02-07. The acquisition is part of a broader campaign of seismic measurements to determine grounding line dynamics of Eastwind Glacier and image the bathymetry of the sub-shelf ocean cavity. The data were recorded as part of the ITGC TIME and EGGS ON TOAST projects, by a team from various UK and US institutions. The data are presented as HDF5 files. with supporting information provided in CSV files. NERC/NSF International Thwaites Glacier Collaboration: Thwaites Interdisciplinary Margin Evolution (TIME), NE/S00677X/1 and NSF #1739027. Interrogator loaned from the University of Leeds Fibre Optic Facility under agreement UOL-FOF-0004. No credit. completed Booth, Adam University of Leeds Researcher author Agnew, Ronan British Antarctic Survey Researcher author Pretorius, Andrew Zetica Researcher author Pearce, Emma British Antarctic Survey Researcher author Cameron, Emma University of St Andrews Researcher author Hehlen, Mark Scott Polar Research Institute, University of Cambridge Researcher author Karplus, Marianne The University of Texas at El Paso Researcher author May, Daniel Stanford University Researcher author Nakata, Norimitsu Massachusetts Institute of Technology Researcher author Seldon, Yeshey The University of Texas at El Paso Researcher author Summers, Paul Rutgers, The State University of New Jersey Researcher author Tulaczyk, Slawek University of California, Santa Cruz Researcher author Young, Tun Jan University of St Andrews Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Thickness/Ice Sheet Thickness EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glaciers EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Thickness/Ice Sheet Thickness EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glaciers theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Antarctica ITGC distributed acoustic sensing glacier seismology theme Eastwind Glacier (Windless Bight), Ross Island Antarctica place Elevation Hydrography theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions public access limited according to Article 13(1)(e) of the INSPIRE Directive license Open Government Licence v3.0 otherRestrictions Data supplied under Open Government Licence v3.0 otherRestrictions Under embargo. doi doi crossReference doi doi crossReference url url largerWorkCitation url url largerWorkCitation url url largerWorkCitation url url crossReference textTable eng utf8 inlandWaters oceans 168.142 168.169 -77.659 -77.652 2024-02-06 2024-02-07 20.0 2.0 urn:ogc:def:crs:EPSG::5714 MSL height Not specific to any location or epoch. Hydrography. It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor application/x-hdf text/plain text/csv bytes 131533373440 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=23dbd529-3a57-4933-bb9d-16ee1c85fda0 WWW:LINK-1.0-http--link Get Data Download data download bytes 131533373440 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=23dbd529-3a57-4933-bb9d-16ee1c85fda0 WWW:LINK-1.0-http--link Get Data Download data download bytes 131533373440 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=23dbd529-3a57-4933-bb9d-16ee1c85fda0 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: A 2.2 km length of Linden SPE-7196 single-mode fibre optic cable was deployed into a shallow (~30 cm deep) trench dug into snow, using a bespoke trenching sled towed behind a snowmobile. The cable was deployed in a zig-zag geometry (see cable coordinates and related datasets) through an array of nodal seismic receivers: the deployment facilitates data measurement along the long- and short-axis of the array, and along its diagonal. Installation was completed on 2024-02-05: snow was shovelled over the trench to reduce wind noise, and the cable was left to sinter into the snow to improve coupling, ahead of seismic shooting which commenced on 23:46 UTC on 2024-02-06. The cable was monitored using a Febus Optics A1-R interrogator (a Rayleigh backscatter instrument which measures the strain rate in the cable, thus the cable becomes a string of pseudo-geophones). The total length of cable connected into the interrogator is 3.4 km, comprising in order i) a 1 km launch lead (a buffering length of cable to ensure faithful amplitude recording along the length of the fibre under test), ii) the main 2.2 km of fibre under test, and iii) 0.2 km of redundant cable which remained on a spool. The A1-R interrogator records in a passive mode (i.e., continuous recording) while 212 active-source seismic shots were taken. These were taken at 35 locations along the length of the cable, using a 12 lb sledgehammer striking a 20 x 20 x 2 cm impact plate. Up to 10 repeat shots were taken at each location to facilitate stacking and increase signal to noise ratio, but the data are provided as unstacked records within the larger passive-source data volume. Documentation includes the quality of each shot as documented by the field crew, and any evident environmental / ambient noise source that was present while shooting was taking place (e.g., nearby snowmobile activity). Data collection: Data recorded with FEBUS Optics A1 Interrogator, connected to Linden SPE-7196 single-mode fibre optic cable. Controlled seismic sources were generated by a 12 lb sledgehammer striking a 20 x 20 x 2 cm resin impact plate placed at the snow surface. Total cable length: 3400 m, of which 0-1000 m constitutes the launch cable, 1000-3200 m constitutes the main fibre under test, 3200-3400 m constitutes 200 m of redundant cable which remains on a spool, and Seismic shots at a 47 m interval along the cable, in the intervals 1000-2230 m and 2820-3200 m. Data quality: The location of shots is accurate to ~0.1 m. Energy from shots in raw data can be observed to offsets up to ~150 m from the shot location, which should improve when data are stacked. The shooting log indicates the quality of each hammer impact, as reported by the operator and ranked between 1-3 (3 being the highest quality): the aim was to record at least 5 shots of rank 3 at each location. Occasional double bounces are reported (numeric value 4), in which the hammer strikes twice in quick succession having not been caught after its initial impact: these should be rejected during data analysis as the waveform would complicate interpretation. Nonetheless, the files are still included in this archive to prevent gaps in the passive record. Other acquisition notes include comment on ambient noise in the data, notably where a nearby snowmobile engine was running at the time of shooting. The impact time of seismic shots is recorded to the nearest minute, such that they can be identified in the passive record. Data filenames inherently record the corresponding date and UTC time, taking the format EWG_ACTIVE_yyyy-mm-dd_hh-mm-ss_UTC.h5. asNeeded completed