Data DOI: 10.26022/IEDA/331278
Citation:
Caress, David, et al., (2023), Near-bottom ROV multibeam bathymetry grid (netCDF format) from the Octopus Garden hydrothermal spring site. Marine Geoscience Data System (MGDS). doi:10.26022/IEDA/331278
Title:
Near-bottom ROV multibeam bathymetry grid (netCDF format) from the Octopus Garden hydrothermal spring site
Abstract:
Near-bottom high-resolution bathymetry data were collected with a Reson 7125 multibeam sonar that is part of the MBARI Low Altitude Survey System (LASS) mounted for two dives in 2021 to the ROV Doc Ricketts, which was flown at 3 m altitude at speeds <= 1.0 m/s to produce 5 cm-resolution bathymetry grids and images from the multibeam. The grid file presented here is in GMT-compatible netCDF format and the projection is UTM zone 10N. Position and attitude data were provided by a Kearfott SeaDevil Inertial Navigation System (INS) integrated with a 1200 kHz Teledyne RD Instruments Doppler velocity log (DVL) and a Paroscientific pressure sensor. The LASS sensor package was mounted in an articulating frame within an ROV tool sled that rotates from pointing the sensors vertically down to horizontally forward, allowing surveys of flat to vertical seafloor. The articulation is automated by closing a control loop around the difference between the forward and backward beams of the DVL. Funding was provided by a grant from the David and Lucile Packard Foundation to MBARI.
Creator(s):
Caress, David
Barry, James
Paduan, Jennifer
Date Available:
2023-03-07
Date Created:
2023-03-07
Data Type(s):
Bathymetry
Resource Type:
Dataset
File Format(s):
application/x-netcdf
Data Curated by:
Version:
1
Language:
en
License:
Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0] URI: http://creativecommons.org/licenses/by-nc-sa/3.0/us/
Related Information
IsVariantFormOf:
doi: 10.26022/IEDA/331279
IsSupplementedBy:
doi: 10.26022/IEDA/331280