b561993597ad46f58c26cf58693b909d English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 dataset NERC EDS Centre for Environmental Data Analysis 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk pointOfContact 2026-05-21T07:56:00 UK GEMINI 2.3 WGS 84 Processed Autonomous Underwater Vehicle (AUV) multibeam bathymetry and backscatter data collected during RRS James Cook cruise JC257 in the UK-1 exploration area, Clarion-Clipperton Zone, Pacific Ocean, 2024 2026-05-06T15:46:06 publication 2026-05-06T15:46:06 creation https://catalogue.ceda.ac.uk/uuid/b561993597ad46f58c26cf58693b909d b561993597ad46f58c26cf58693b909d NERC EDS British Oceanographic Data Centre NOC http://dx.doi.org/10.5285/4ffa6c9e-16a4-c414-e063-7086abc0bb14 doi Multibeam Echosounder (MBES) bathymetry and backscatter data were acquired in the UK-1 exploration area of the Clarion-Clipperton Zone (CCZ), Pacific Ocean, using the Autonomous Underwater Vehicle (AUV) Autosub5-mounted Norbit WBMS-bathy MBES during RRS James Cook Cruise JC257 between 16/02/2024 and 09/03/2024. These datasets were collected to investigate local-scale seafloor morphology and to improve understanding of biodiversity patterns and benthic habitat distribution within the CCZ, by scientists from the National Oceanography Centre, Southampton, UK as part of the NERC-funded Seabed Mining And Resilience To EXperimental impact (SMARTEX). The AUV was used to map in high resolution the 0, 1, 16, 30 and 100 km sites. Bathymetric data were processed using Quality Positioning Services (QPS) Qimera 2.7.6, while backscatter data were subsequently processed using QPS FMGT 7.11.2. Tidal corrections were derived at the Long Mooring 1 site using the TMD toolbox, based on the TPXO global tidal inversion model developed at Oregon State University (OSU), and applied to the dataset. CTD-derived sound velocity profiles (SVPs) were then used to further refine the acoustic corrections. Semi-automatic and manual cleaning procedures were carried out to remove erroneous soundings, particularly along the outer swath edges. The 0–1 km site was surveyed during missions AS5M084 and AS5M085; the latter was spatially adjusted through the identification of common seafloor features. Sites at 16 and 30 km were surveyed during mission AS5M089. The 100 km site was mapped during missions AS5M093, AS5M094, and AS5M096, with AS5M093 used as a spatial reference to align the subsequent surveys based on shared geomorphological features. For each site, bathymetric grids were generated at 1, 2, and 5 m resolution, in WGS84 UTM Zone 11N projection, with interpolation applied where necessary to fill gaps between survey lines. Processed .gsf files were then exported to QPS FMGT to produce backscatter mosaics at 0.20 m resolution. Both backscatter and bathymetry data are supplied in .xyz format. Additionally, bathymetry are supplied in ESRI ASCII Raster format, and backscatter as GeoTIFF files. Wardell, Catherine Unavailable author Unavailable author Varzi, Andrea Giulia Unavailable author Unavailable author Van Audenhaege, Loic Unavailable author Unavailable author Huvenne, Veerle A Unavailable author Unavailable author Jones, Daniel O B Unavailable author Unavailable author NERC EDS British Oceanographic Data Centre NOC custodian unknown custodian NERC EDS Centre for Environmental Data Analysis distributor 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk distributor NERC EDS British Oceanographic Data Centre NOC point_of_contact unknown pointofContact NERC EDS British Oceanographic Data Centre NOC publisher unknown publisher unknown dataset Not defined atmospheric conditions theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication otherRestrictions Public data: access to these data is available to both registered and non-registered users. otherRestrictions Under the following licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. grid English climatologyMeteorologyAtmosphere -116.5458 -116.0825 13.05556 13.98528 2024-02-16T00:00:00 2024-03-09T23:59:59 .xyz; .asc; .prj; .tiff; .csv; .xlsx NERC EDS Centre for Environmental Data Analysis Data Center Contact 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk distributor https://catalogue.ceda.ac.uk/uuid/b561993597ad46f58c26cf58693b909d CEDA Data Catalogue Page Detail and access information for the resource information http://data.ceda.ac.uk/bodc/deposits03/soc260087 DOWNLOAD Download Data download dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 The data are archived on the British Oceanographic Data Centre (BODC)'s archive at the Centre for Environmental Data Analysis (CEDA) and assigned a DOI. No quality control procedures were applied by BODC.