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Side-scan sonar

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    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 marine geophysical survey undertaken by Institute of Geological Sciences (BGS) part funded by the Water Resources Board took place March to June 1972 in The Wash on board the fishing vessel Exact. Sea floor data were collected using a transit sonar. Subsurface data were gathered using a pinger, boomer and sparker , a total of 426.5 miles were covered. These data are archived by BGS. Technical details of the survey are contained in BGS Internal Report WB/ MG/72/ 45, details of Wash surveys contained in WB/MG/74/030 and IGS report 78/18.

  • 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 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 British Geological Survey (BGS) marine geophysical survey took place during October/November 2003 in the Outer Bristol Channel aboard the RV Prince Madog. Netsurvey Ltd were commissioned to provide multibeam services. This survey was undertaken for the Outer Bristol Channel Marine Habitat Study (OBCMHS) as part of a series of five surveys. The OBCMHS was principally funded by the Aggregate Levy Sustainability Fund, MALSF, (administered in Wales by the Welsh Assembly Government), the Sustainable Land Won and Marine Dredged Aggregate Minerals Programme of the Office of the Deputy Prime Minister (ODPM), administered by Mineral Industry Research Organisation (MIRO), with contributions from others. Sea floor data collected were high-resolution multibeam bathymetry and side-scan sonar (on selected lines). Subsurface data were gathered using a surface tow boomer (on selected lines). The multibeam data collected on this survey were later merged with data from the 2004 survey and this combined dataset is available with the 2004 survey. Most of the data were recorded digitally. Some paper records were also generated also. These data are archived with the MEDIN Data Archive Centres (DAC), including the BGS DAC for geology and geophysics and the UKHO DAC for bathymetry data. Technical details of the survey are contained in BGS Cruise report IR/04/012 (http://nora.nerc.ac.uk/id/eprint/509269/) and BGS Cruise report IR/05/082 (http://nora.nerc.ac.uk/id/eprint/11121/). For further information on the surveys and general information on the OBCMHS see the final report (Mackie et al, 2006. BIOMOR Reports 4:ISBN 0-7200-0569-8).

  • This British Geological Survey (BGS) marine geophysical survey took place during August 2004 in the Outer Bristol Channel aboard the RV Prince Madog. Netsurvey Ltd were commissioned to provide multibeam services. This survey was undertaken for the Outer Bristol Channel Marine Habitat Study (OBCMHS) as part of a series of five surveys. The OBCMHS was principally funded by the Aggregate Levy Sustainability Fund, MALSF, (administered in Wales by the Welsh Assembly Government), the Sustainable Land Won and Marine Dredged Aggregate Minerals Programme of the Office of the Deputy Prime Minister (ODPM), administered by Mineral Industry Research Organisation (MIRO), with contributions from others. Sea floor data collected were high-resolution multibeam bathymetry and side-scan sonar (on selected lines). Subsurface data were gathered using a surface tow boomer (on selected lines). The multibeam data adds to the data collected on a previous survey in 2003 and multibeam products include data from the 2003 survey. Most of the data were recorded digitally. Some paper records were also generated also. These data are archived with the MEDIN Data Archive Centres (DAC), including the BGS DAC for geology and geophysics and the UKHO DAC for bathymetry data. Technical details of the survey are contained in BGS Cruise report IR/05/082 (http://nora.nerc.ac.uk/id/eprint/11121/). For further information on the surveys and general information on the OBCMHS see the final report (Mackie et al, 2006. BIOMOR Reports 4:ISBN 0-7200-0569-8).

  • 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 JNCC marine survey took place in July 2009 and surveyed two areas (Anton Dohrn seamount and East Rockall Bank Reef) for offshore Special Areas of Conservation (SACs). These areas are both now pSACs. The survey was commissioned by JNCC and undertaken by the British Geological Survey, University of Plymouth and Marin Mättenik AB. The aim was to enable the distribution, extent and biological characterisation of Annex I reef. Sidescan sonar data was acquired using a MMT AB EdgeTech 2200-MP, Multibeam bathymetry data were collected using a Kongsberg EM710, a Seatronics Drop Frame Camera System was used for digital photography and video. 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-5026. Technical details of the survey are contained in BGS Commercial Report CR/09/113 (http://nora.nerc.ac.uk/id/eprint/511601/), http://jncc.defra.gov.uk/PDF/2009_3_JNCC_Cruise_Report_Public%20(2).pdf.

  • 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.