Abstract
spring. Self-contained and intended to be deployed for 2 weeks at a time with short turnaround times between deployments, this platform is based on the Imagenex Delta T multibeam sonar (260 kHz) with associated power supplies, instrumentation and data recording devices. The sonar faces vertically upwards with the multibeam swath orientated parallel to the tidal flow. Versatile duty cycling allows acoustic snapshots at specific intervals of interest. Range and volume backscatter intensity measurements are used to reconstruct the evolution of the environment around the sonar. This allows imaging of targets (e.g. fish and diving seabirds) interacting with the marine renewable energy device of interest and moving in the tidal flow.
| Original language | English |
|---|---|
| Title of host publication | 11th European Conference on Underwater Acoustics 2012, ECUA 2012 |
| Place of Publication | St. Albans |
| Publisher | Institute of Acoustics |
| Pages | 1271-1277 |
| Number of pages | 7 |
| Volume | 34 2 |
| ISBN (Print) | 9781622761920 |
| Publication status | Published - 2012 |
| Event | 11th European Conference on Underwater Acoustics - Edinburgh, UK United Kingdom Duration: 1 Jul 2012 → 6 Jul 2012 |
Conference
| Conference | 11th European Conference on Underwater Acoustics |
|---|---|
| Country | UK United Kingdom |
| City | Edinburgh |
| Period | 1/07/12 → 6/07/12 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Multibeam imaging of the environment around marine renewable energy devices. / Williamson, Benjamin; Blondel, Philippe.
11th European Conference on Underwater Acoustics 2012, ECUA 2012. Vol. 34 2 St. Albans : Institute of Acoustics, 2012. p. 1271-1277.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Multibeam imaging of the environment around marine renewable energy devices
AU - Williamson, Benjamin
AU - Blondel, Philippe
PY - 2012
Y1 - 2012
N2 - The drive towards sustainable energy has seen rapid development of marine renewable energy devices, and current efforts are focusing on wave and tidal structures. However, little is known of the effect of installing and operating these devices. The NERC/DEFRA collaboration FLOWBEC-4D (Flow, Water column & Benthic Ecology 4D) is investigating these effects at test sites in Orkney (EMEC) and Cornwall (Wave Hub), combining the data from bird observations, shore-based marine X-band radar surveys of wave and current data, detailed modelling of the flow and water column, passive acoustic monitoring and the deployment of a remote-sensing sonar platform. The latter contains a multibeam imager, whose design and operation will be presented in this talk. The first field deployments are planned for May-July 2012 with first underwater tests earlier in spring. Self-contained and intended to be deployed for 2 weeks at a time with short turnaround times between deployments, this platform is based on the Imagenex Delta T multibeam sonar (260 kHz) with associated power supplies, instrumentation and data recording devices. The sonar faces vertically upwards with the multibeam swath orientated parallel to the tidal flow. Versatile duty cycling allows acoustic snapshots at specific intervals of interest. Range and volume backscatter intensity measurements are used to reconstruct the evolution of the environment around the sonar. This allows imaging of targets (e.g. fish and diving seabirds) interacting with the marine renewable energy device of interest and moving in the tidal flow.
AB - The drive towards sustainable energy has seen rapid development of marine renewable energy devices, and current efforts are focusing on wave and tidal structures. However, little is known of the effect of installing and operating these devices. The NERC/DEFRA collaboration FLOWBEC-4D (Flow, Water column & Benthic Ecology 4D) is investigating these effects at test sites in Orkney (EMEC) and Cornwall (Wave Hub), combining the data from bird observations, shore-based marine X-band radar surveys of wave and current data, detailed modelling of the flow and water column, passive acoustic monitoring and the deployment of a remote-sensing sonar platform. The latter contains a multibeam imager, whose design and operation will be presented in this talk. The first field deployments are planned for May-July 2012 with first underwater tests earlier in spring. Self-contained and intended to be deployed for 2 weeks at a time with short turnaround times between deployments, this platform is based on the Imagenex Delta T multibeam sonar (260 kHz) with associated power supplies, instrumentation and data recording devices. The sonar faces vertically upwards with the multibeam swath orientated parallel to the tidal flow. Versatile duty cycling allows acoustic snapshots at specific intervals of interest. Range and volume backscatter intensity measurements are used to reconstruct the evolution of the environment around the sonar. This allows imaging of targets (e.g. fish and diving seabirds) interacting with the marine renewable energy device of interest and moving in the tidal flow.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84871359322&partnerID=40&md5=d1edbebc99e7ccbb7abfb6e7cb5e4926
UR - http://www.scopus.com/inward/record.url?scp=84871359322&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9781622761920
VL - 34 2
SP - 1271
EP - 1277
BT - 11th European Conference on Underwater Acoustics 2012, ECUA 2012
PB - Institute of Acoustics
CY - St. Albans
ER -