65abc40d-e256-414b-8b50-a5569556d1be 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 2019-06-20 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 Point cloud data and visualisation of an englacial cut-and-closure channel on Austre Broggerbreen, Svalbard, in March 2016 2019-06-20 creation 2019-06-20 revision 2019-06-20 publication 2019-06-20 released 1.0 https://doi.org/10.5285/65abc40d-e256-414b-8b50-a5569556d1be doi GB/NERC/BAS/PDC/01163 https://data.bas.ac.uk/ Please cite this item as: Kamintzis, J., Jennings, S., Irvine-Fynn, T., Holt, T., Jones, J., Hubbard, B., & Bunting, P. (2019). Point cloud data and visualisation of an englacial cut-and-closure channel on Austre Broggerbreen, Svalbard, in March 2016 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/65abc40d-e256-414b-8b50-a5569556d1be The dataset encompasses the processed point clouds (.pts format), a panoramic tour, and a video flythrough of registered point clouds capturing a 122 m long reach of an englacial cut-and-closure channel in the glacier, Austre Broggerbreen, Svalbard, in March 2016. Point clouds were derived from 28 Terrestrial Laser Scanning (TLS) surveys, to characterise the morphology of the channel in three-dimensions and enable extraction of features reflective of hydrological flow conditions. The panoramic tour shows a greyscale image of the scan reflectivity values at each survey location, whereby the lighter the pixel colour, the greater the intensity of the laser beam return. This panoramic tour enables the viewer to self-navigate through the channel to see the morphological features within it. The video flythrough of the point cloud provides a visualisation of the point cloud data, travelling from the glacier surface, down the moulin and along the extent of the scanned reach. The point cloud has been coloured to reflect differences in height. Funding source Knowledge Economy Skills Scholarship (KESS II) under Project AU10003, a pan-Wales higher-level skills initiative led by Bangor University of behalf of the HE sector in Wales. It is part funded by the Welsh Government's European Social Fund (ESF) convergence programme for West Wales and the Valleys. Funding was awarded to TDLI-F and JEK, with support from Deri Jones & Associates Ltd. Additional support is acknowledged from Aberystwyth University (Department of Geography and Earth Sciences). No credit. completed Kamintzis, Jayne Aberystwyth University Researcher author Jennings, Stephen Masaryk University Researcher author Irvine-Fynn, Tristram Aberystwyth University Researcher author Holt, Thomas Aberystwyth University Researcher author Jones, John Deri Jones and Associates, Ltd. Researcher author Hubbard, Bryn Aberystwyth University Researcher author Bunting, Pete Aberystwyth University 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 Topography/Ice Sheet Topography EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glaciers 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 Austre Broggerbreen englacial point clouds terrestrial laser scanning theme Broggerhalvoya Svalbard place Elevation Hydrography 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 This data is supplied under Open Government Licence v3.0 otherRestrictions No restrictions apply. url url crossReference url url crossReference url url crossReference url url crossReference textTable eng utf8 climatologyMeteorologyAtmosphere environment 11.842 11.842 78.89384 78.89384 2016-03-10 2016-03-16 178.0 178.0 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 text/plain video/mp4 bytes 18253611008 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=65abc40d-e256-414b-8b50-a5569556d1be WWW:LINK-1.0-http--link Get Data Download data download bytes 18253611008 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=65abc40d-e256-414b-8b50-a5569556d1be WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: Data was collected using a FARO (registered trademark) Focus3D X 330 phase-shift scanner with a shortwave infrared wavelength of 1550 nm, mounted on a GitzoTM Mountaineer carbon fibre tripod using a heavy duty 3/8" camera fast-release mount. Scans were conducted throughout the channel reach at a horizontal spacing of between 2 and 9 m, at a height of 1.5 m. All channel scans were conducted at 1/5 resolution, providing point spacing of 7.67 mm at 10 m distance, with scans at the glacier surface being conducted at 1/4 resolution, providing point spacing of 6.14 mm at 10 m distance. Scan locations were determined by the channel morphology, with positioning of the scanner to obtain the greatest wall coverage with the minimum number of scans, and to prevent channel morphology from occluding parts of the channel. A4 planar checkerboard targets were inserted into the channel walls using ice screws and crocodile clips and A5 planar checkerboard targets were placed at intervals of > 1 m along the channel floor. Targets were placed strategically to enable registration of the point clouds to one another, with a minimum of 3 common targets between each adjacent scan. The initial scan was conducted at the glacier surface and, thus, the GPS location of these scans were used to georeference the scans below the ice. The point clouds were manually registered to one another in a downstream direction from the base of the moulin using the targets in FARO (registered trademark) SCENE 5 software, with the use of distance based and stray filtering processes to remove points > 30 m away from the scanner and points arising from the laser beam hitting 2 surfaces. Jpeg images of the scan reflectivity values were exported from FARO (registered trademark) SCENE 5 and linked in Kolor Panotour Pro 2.5 software to create a 360deg visualisation from each scan location, with inbuilt links to the adjacent scans and a map of the channel planform. Point clouds were imported into Bentley Pointools CONNECT Edition software and the colour range was changed to reflect the height of each point above the initial scan location. Recording of camera positions throughout the channel was used to create a video flythrough of the point clouds. Data collection: Terrestrial laser scanner - FARO (registered trademark) Focus3D X 330 Software - FARO (registered trademark) SCENE 5, 3D Reshaper 2018, Bentley Pointools CONNECT Edition, Kolor Panotour Pro 2.5. Data quality: Each scan has been registered to the preceding scan with a mean registration accuracy of 3.3 mm. This error is the standard deviation of the orthogonal registration mismatch, expressed as cumulative distance offset in the X, Y and Z planes. Due to the unclosed traverse preventing equal error distribution between scans, the maximum combined absolute error at the end of the traverse is 73 mm, derived as the sum of orthogonal registration mismatches for the 28 scans. Cleaning of the data used the 'distance based' and 'stray' filters within the FARO® SCENE 5 software to remove points > 30 m from each scan position and scan points that resulted from the laser beam hitting two objects. Data losses are the result of the clean, shiny, smooth ice surfaces within the englacial channel, with these surfaces failing to provide laser returns due to the infrared absorption. asNeeded completed