8d3ea437-e7ae-4939-afba-534b87581c14 urn:uuid Antarctica New Zealand adminteam@antarcticanz.govt.nz 2024-07-16T05:40:42.733Z 2024-04-18T21:50:02 ISO 19115-1 2018 https://auckland.figshare.com/s/9f783802272b825d7ad7?file=17818898 Borehole Seismic Data at Windless Blight and Hot Water Drill Site 2 (HWD2), Antarctica, 2016-2018 2024-04-19T10:55:20 2020-12-08T00:00:00 This metadata record presents observations of ice shelf anisotropy derived from borehole seismic data. Hot-water-drilled boreholes were created at two sites: Windless Bight (WB) near the grounding line on Ross Island and HWD-2 in the central Ross Ice Shelf. The boreholes housed seismometers frozen at various depths within the ice, enabling seismic observations of shear wave splitting (SWS) using active seismic sources. At Windless Blight, borehole seismometers were installed at depths of 40 and 190 meters within the ∼220 m thick ice shelf during the 2016/2017 Antarctic field season. Seismic shots were recorded with a 2,000 Hz sampling rate and a 2 s record length, triggered by striking plates. The site was revisited in December 2017 to validate sensor survivability and reproduce survey geometry for SWS analysis using multiazimuth shots. At HWD-2, eight seismometers were deployed at depths ranging from 80 to 325 meters inside the ∼370 m thick ice shelf during the 2017/2018 field season. A total of 747 shots at 53 different shot points were recorded, with clear observations of split shear waves in the data. The study contributes valuable seismic data and methodology for understanding ice shelf anisotropy, enhancing our knowledge of Antarctic ice dynamics and seismic behavior. Further details are provided at: Lutz, F., Eccles, J., Prior, D. J., Craw, L.,Fan, S., Hulbe, C., et al. (2020). Constraining ice shelf anisotropy using shear wave splitting measurements from active‐source borehole seismics.Journal of Geophysical Research: EarthSurface,125, e2020JF005707. https://doi.org/10.1029/2020JF005707 GET DATA: https://auckland.figshare.com/s/9f783802272b825d7ad7 Lutz, F. flut183@aucklanduni.ac.nz ORCid Figshare info@figshare.com geoscientificInformation 159.0468 176.9433 -81.0959 -77.3181 -80.65829999999966 174.4613 -77.70128367364894 167.80752600515004 2016-12-01T00:00:00 2018-03-15T00:00:00 https://antcat.antarcticanz.govt.nz:/geonetwork/srv/api/records/8d3ea437-e7ae-4939-afba-534b87581c14/attachments/8d3ea437-e7ae-4939-afba-534b87581c14.png Source: https://doi.org/10.1029/2020JF005707 SHEAR WAVE SPLITTING WINDLESS BLIGHT GEOPHYSICS ROSS ICE SHELF HWD2 INSTALLATION K061A BOREHOLES GLACIER MOTION/ICE SHEET MOTION ICE SHEET MEASUREMENTS GLACIERS/ICE SHEETS GCMD Earth Science and Earth Science Services Keywords 2024-02-14 geonetwork.thesaurus.external.theme.ardc-curated_gcmd-sciencekeywords_16-3-2023-06-09(1) GCMD Earth Science and Earth Science Services Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords sciencekeywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords FIELD SURVEYS Ice Shelf GCMD Platform/Sources Keywords 2024-02-14 geonetwork.thesaurus.external.platform.ardc-curated_gcmd-platforms_16-3-2023-06-15 GCMD Platform/Sources Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms platforms https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms Seismometers GCMD Instrument/Sensors Keywords 2024-02-14 geonetwork.thesaurus.external.instrument.ardc-curated_gcmd-instruments_16-3-2023-06-16(1) GCMD Instrument/Sensors Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments instruments https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments ANTARCTICA MCMURDO SOUND GCMD Locations Keywords 2024-02-14 geonetwork.thesaurus.external.place.ardc-curated_gcmd-locations_16-3-2023-06-09 GCMD Locations Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations locations https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations Aotearoa New Zealand Ross Ice Shelf Programme GCMD Project Keywords 2024-02-14 geonetwork.thesaurus.external.project.ardc-curated_gcmd-projects_16-3-2023-06-15(1) GCMD Project Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects projects https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ https Attribution 4.0 International (CC BY 4.0) Human Readable summary of the CC BY copyright license. Creative Commons Attribution 4 This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ https Attribution 4.0 International (CC BY 4.0) Human Readable summary of the CC BY copyright license. Creative Commons Attribution 4