957fb0bd-6d51-46fc-b4fa-731d21731eda 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 2024-12-12 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 Borehole optical televiewer logs from the southern sector of Larsen C Ice Shelf, Antarctic Peninsula, November-December 2022 2024-12-12 creation 2024-12-12 revision 2024-12-12 publication 2024-12-12 released 1.0 https://doi.org/10.5285/957fb0bd-6d51-46fc-b4fa-731d21731eda doi GB/NERC/BAS/PDC/01967 https://data.bas.ac.uk/ NE/T008016/1 award Please cite this item as: Hubbard, B., Miles, K., & RiPIce Project Team (2024). Borehole optical televiewer logs from the southern sector of Larsen C Ice Shelf, Antarctic Peninsula, November-December 2022 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/957fb0bd-6d51-46fc-b4fa-731d21731eda These are digital optical televiewer logs of two boreholes drilled by hot water to 120 m (Site 1) and 160 m (Site 2) on Larsen C Ice Shelf, Antarctic Peninsula. Boreholes were drilled in December 2022 to investigate the internal properties of a suture zone (Site 1) and a meteoric ice band (Site 2) of an ice shelf, as part of the NERC-funded RiPIce (Rift Propagation for Ice sheet models) research project. NERC standard grant NE/T008016/1. No credit. completed Hubbard, Bryn Aberystwyth University Researcher author Miles, Katie Aberystwyth University Researcher author RiPIce project team 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 Mass Balance/Ice Sheet Mass Balance EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Motion/Ice Sheet Motion EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Mass Balance/Ice Sheet Mass Balance EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Motion/Ice Sheet Motion EARTH SCIENCE > Oceans > Coastal Processes > Sea Level Rise 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 Larsen C ice borehole optical televiewer theme Larsen C ice shelf Antarctica place Elevation Hydrography Oceanographic geographical features theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions Data supplied under Open Government Licence v3.0 otherRestrictions No restrictions apply. url url crossReference url url largerWorkCitation doi doi crossReference textTable eng utf8 inlandWaters oceans -64.3236 -64.3236 -68.0408 -68.0408 2022-12-02 2022-12-02 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 image/bmp bytes 462422016 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=957fb0bd-6d51-46fc-b4fa-731d21731eda WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: The datasets are optical televiewer logs from two boreholes drilled to 120 m (Site 1) and 160 m (Site 2) on Larsen C Ice Shelf, Antarctica, in December 2022. They were acquired using a slim-hole optical televiewer borehole probe manufactured by Robertson Geologging Ltd, comprising a 360 degree camera. Boreholes were logged whilst the optical televiewer was travelling up the borehole. The optical televiewer has internal LEDs to illuminate the borehole wall, indicated by a % lighting level controlled by the user. Lighting changes were made whilst logging, as follows: RiPIce OPTV Site1 Depth (m),Lighting (%) 25.74 - 45.58,60 45.58 - 45.61,55 45.61 - 48.80,80 48.80 - 54.08,85 54.08 - 57.97,90 57.97 - 82.40,95 82.40 - 82.94,90 82.94 - 88.25,100 88.25 - 88.34,95 88.34 - 88.76,90 88.76 - 119.94,100 RiPICE OPTV Site2 Depth (m),Lighting (%) 1.97 - 50.30,50 50.30 - 69.90,70 69.90 - 159.97,90 Data collection: Logs were acquired using Robertson Geologging OPTV probe, mini winch and Micrologger II. Data quality: Images are unaltered from those logged in the field. The OPTV technique is described by Hubbard et al. (2008). asNeeded completed