WP3 - Remote Sensing Scallop Evaluation Scottish Inshore Fisheries - PowerPoint PPT Presentation

WP3 - Remote Sensing Scallop Evaluation Scottish Inshore Fisheries Conference - 27 th April 2017 European Maritime & Fisheries Fund

Remote Sensing Scallop Evaluation The project will assess the potential of novel, automated technologies for the collection of scallop stock data. 1. Desk-based review of current state-of-art for remote survey methods for scallop resources 2. Limited sea-trial of three methodologies that best represent the different approaches currently available for remote survey 3. Evaluation of tests and methods with respect to industry capacity and cost effectiveness

The Team • USTAN - Dr Richard Bates, Dr Melanie Chocholek, Prof Stephen Buckland • SAMS – Dr John Howe, Dr. Clive Fox, Dr. Chris Allen, Mr Colin Abernethy, Ms Estelle Dumont: AUV technician. • Shearwater Geophysical – Dr Neil Jones

• Task 1 - desk-based review of current state-of-art for remote survey and analysis methods • Task 2 - sea-trial – towed systems - Sidescan Sonar, multibeam sonar – autonomous systems – Gavia AUV – buoyed systems – Walkaway Velocity Analysis • Task 3 - ground truth sampling of site using standard methods of analysis to include diver-based survey, towed-video survey and UAV still/video survey. • Task 4 – processing of remote sensing results using standard software approaches • Task 5 – statistical analysis of results. This task will include identifying any adjustments required to correct for scallops unavailable for detection by any given method. A cost-benefit analysis will also be performed at this stage to identify how accuracy and precision balance against the costs of each survey method.

Test Sites – Firth of Lorne

Test Sites – Firth of Lorne

Technology Remote Sensing – Multibeam, multi-frequency sonar – Bathymetric sidescan sonar – AUV with sonar and camera Ground Truth – Video/Still diver and dropdown

Norbit iWBMSc (compact) Wideband Multibeam Sonar 400kHz w/80kHz BANDWIDTH (FREQ. AGILITY 200-700kH

Gavia Offshore Surveyor AUV • 500kHz Geoacoustics sonar • Grasshopper benthic colour camera and strobe