Keyword

Side-scan sonar

144 record(s)
 
Type of resources
Topics
Keywords
Contact for the resource
Provided by
Years
Representation types
Update frequencies
Resolution
From 1 - 10 / 144
  • Categories  

    This dataset consists of image mosaics of submarine canyons off Morocco collected using TOBI side-scan sonar on RV Maria S. Merian cruise MSM32, which occurred between 25 September and 30 October 2013. Imaging was conducted using a TOBI deep tow sidescan sonar, a high-resolution 2D seismic system consisting of a 150m long 88 channel digital streamer and a standard GI-gun. This cruise formed the field component of NERC Discovery Science project ‘How do submarine landslides disintegrate and form long run-out turbidity currents in the deep ocean, and how erosive are these flows?’ The study aimed to generate the first ever field dataset tracing a large-scale submarine landslide and its associated sediment-gravity flow from source-to-sink. This resulting dataset will aim to answer three important science questions: 1) How quickly do large submarine landslides disintegrate into long run-out sediment flows, and how is this process influenced by shape of the slope? 2) How efficiently do landslides remove failed material, i.e. what proportion of landslide debris is deposited on the slope and how much transforms into a flow that is transported distally? 3) How much sediment is incorporated into the flow through seafloor erosion, and where does most of this erosion take place? The Discovery Science project was composed of Standard Grant reference NE/J012955/1 and was led by Professor Russell Barry Wynn (National Oceanography Centre, Science and Technology). Funding ran from 07 June 2013 to 06 June 2014. Data have been received by BODC as raw files from the RRS James Cook and are available on request from BODC enquiries.

  • This geophysical survey has been carried out by Marine Geophysics Unit of British Geological Survey (BGS) for BGS, the survey took place from June to July 1971 in the North Scotland and Minch area, on board the MV Surveyor. The purpose was to collect data as part of a regional mapping programme. Sea floor data were collected using Echosounder and Transit sonar. These data are archived by BGS. No BGS survey report currently available, IGS 1971 annual report contains summary.

  • This CEFAS marine geophysical survey took place in February/March 2006 in the Eastern English Channel aboard the RV CEFAS Endeavour. This survey was undertaken for the Eastern English Channel Marine Habitat Map study (EECMHM) as part of a series of four surveys. The EECMHM study was funded by the Marine Environment Protection Fund (MEPF) a marine component of the Aggregate Levy Sustainability Fund (MALSF). The purpose of this survey was to infill between lines completed during a previous survey in 2005. Sea floor data were collected using an EM3000 multibeam bathymetry system. Backscatter data were collected using sidescan sonar system. These data are archived with the MEDIN Data Archive Centres (DACs), including the BGS DAC for geology and geophysics and multibeam bathymetry data are available from the UKHO Bathy DAC, https://www.gov.uk/guidance/inspire-portal-and-medin-bathymetry-data-archive-centre. Where Hardcopy records exist these have been archived by CEFAS. Cruise summary report available: https://www.bodc.ac.uk/resources/inventories/cruise_inventory/reports/endeavour6_06.pdf. For further information on the surveys and general information on the EECMHM see the final report (James et al, 2007. Cefas Science Series Technical Report No. 139).

  • This geophysical survey was carried out under contract for the Marine Aggregate Levy Sustainability Fund (MALSF) as part of a Regional Environmental Characterisation, the survey took place from the 8th March to the 18th March 2010. This project is to extend the mapped coverage of the Eastern English Channel Marine Habitat Map (EECMHM) to include the coastal platform from Saltdean east to Dungeness and provide an integrated map dataset covering this extension area The geophysical data was acquired using Surface Tow Boomer and Sidescan sonar equipment. Technical detail of the survey are contained in BGS Open Report OR/10/052.

  • This geophysical and multibeam survey took place in March/April 2006 in the Bristol Channel on board the MV Confidante. It was carried out by Gardline under contract to British Geological Survey (BGS) and Geotek Ltd. It was co-funded by UK Department of Trade and Industry for their Strategic Environmental Assessment Programme (SEA8) and NERC/BGS for their marine mapping programme. The objective was to collect data for investigations of sediment mobility and for monitoring sea bed morphology and sea bed sediment texture. Seafloor bathymetry data were collected using an EM3000 multibeam system and Edgetech 4200FS sidescan sonar. Sub-bottom seismic profiling data were collected using a surface tow boomer. These data were recorded digitally and are archived by BGS. Technical details of the survey are contained in Gardline Report 6749, the BGS cruise report and preliminary geological interpretation are contained in BGS Report CR/06/085. See the Offshore GeoIndex SEA layers and the SEA Portal https://www.bgs.ac.uk/data/sea/app/search.

  • This British Geological Survey (BGS) regional marine geophysical and sampling survey took place in September-October 1971 in Lyme Bay on board the fishing vessel Dorset Lass. The purpose was to obtain more information on sediment transport and solid geology, carried out in conjunction with the Engineering Geology Unit. Sonar records were obtained from a KH MS.47 transit sonar. Seabed samples were collected by scuba divers. These data are archived by BGS. Summary details of the survey are contained in Institute Geological Sciences (IGS) Report 79/10.

  • This survey has been carried out in May/June 2009 off the east coast of East Anglia on board the CEFAS Endeavour under contract for the Aggregate Levy Sustainability Fund (MALSF) comprising the acquisition of groundtruthing data including vibrocore samples, clamshell grab samples, mini-Hamon grab samples, 2m Jennings beam trawls and various camera techniques as part of a Regional Environmental Characterisation. The sample sites were chosen based on data acquired on the BGS 2008/04 / CEND 18/08 geophysical survey which took place from the 27th September to the 30th October 2008. Further geophysical data was acquired using a multibeam echosounder and dual frequency side scan sonar. The survey was undertaken in joint collaboration between the British Geological Survey, the Centre for Ecology, Fisheries and Aquaculture Science (CEFAS) and Wessex Archaeology. BGS Internal Report IR/10/019.

  • This geophysical survey has been carried out by, British Geological Survey (BGS), the survey took place in July 1991 in the North Sea on board the RRS Challenger. The purpose was to collect data to investigate gas-leakage phenomena from pockmarks in the North Sea. Sea floor data were collected using Sidescan Sonar. Sub-bottom profiling data were collected using Deep Tow Boomer. These data were recorded digitally and are archived by BGS.

  • This British Geological Survey (BGS) marine geophysical survey took place in October 1999 in the Mersey Estuary aboard the Environment Agency vessel Goastal Guardian. The purpose was to gather data which could be used in Coastal and Estuary Evolution studies. Sea-floor data were collected using an echosounder and a sidescan sonar. Subsurface seismic data were gathered using a surface tow boomer. These data are archived by BGS. Technical details of the survey are contained in BGS report WB/00/02.

  • The JNCC marine survey was undertaken by CEFAS in April 2008 in the Dogger Bank area North Sea onboard the Cefas Endeavour. This work was in support of JNCC’s requirement to recommend sites for designation as Special Areas of Conservation (SACs) to UK Government, under the EC Habitats Directive. The aim was further developing methodologies for identifying and defining the extent of Annex I shallow sandbank habitat and to conduct new habitat mapping surveys to further develop and integrate geomorphological and biological survey methods and strategies to provide interpreted information in GIS for use in site designation and management of activities in the Dogger bank area. Multibeam bathymetry data were collected using a Kongsberg EM3000D and sidescan sonar data were collected using a Benthos SIS 1624. Groundtruthing techniques including video tows, Hamon grab sampling and beam trawling. The geology and geophysics component of the data are archived at the British Geological Survey (BGS) MEDIN Data Archive Centre (DAC) for Geology and Geophysics. Biological and bathymetry data are archived at DASSH and UKHO respectively. For more information see http://jncc.defra.gov.uk/page-4733, JNCC Report 429, available at http://jncc.defra.gov.uk/page-5076. Technical details of the survey are contained in CEFAS Cruise Report CEND 07/08.