The Teledyne Marine Channel niels.alsted@teledyne.com https://www.video.teledynemarine.com en-us Visualplatform http://blogs.law.harvard.edu/tech/rss The Teledyne Marine Channel episodic no https://www.video.teledynemarine.com/files/rv1.364/sitelogo.gif https://www.video.teledynemarine.com http://www.video.teledynemarine.com/photo/20174857/use-of-acoustic-techniques-for-the-determination <p><p><b>Presenter:&nbsp;&nbsp;</b><br></p><p>David Williams<br><b>Australian Institute of Marine Science&nbsp;</b></p><h2><b>Abstract&nbsp;</b></h2>The Marine Supply Base channel in Darwin Harbour, Northern Territory Australia provides access to berthing and loading at East Arm wharf for vessels that support the offshore energy industry.<p></p> <p>Sedimentation in the channel due to complex currents in the area is reducing navigational efficiency and safety. </p> <p>A combination of multi-beam echo sounder, utilising an Odom MB1 and Acoustic Doppler Current Profiler, using a network of TRDI Workshorse and Sentinel V, surveys were conducted over a 12 month period encompassing both dry and wet seasons. The MBES surveys mapped the extent of the MSB channel and the East Arm sandbar adjacent to the channel. Tidal current patterns determined from the ADCP surveys show that tidal currents in the area are highly variable and are stronger in the ebb tide direction except at the entrance to the navigation channel. Tidal current are more variable in the flood tide direction at all remaining sites along the channel. The strength and direction of the tidal currents indicate that sediment movement is along the channel toward the deeper seaward navigation channel.</p> <p>Fine sediments have deposited in the MSB berthing area slightly reducing the volume of the berthing pocket and also depositing toward the end of the channel. An annual sediment deposition rate of 100 mm over the berth area was determined via observations and modelling. </p> <p>Non-cohesive sand transport modelling, configured using data from the MBES and ADCP surveys, has indicated slow movement of the sandbar in a dominantly south west direction at between 100 – 200 mm per month. Fine sediment modelling indicates deposition in the MSB berth area of 20 – 50 mm/year under average conditions.</p> <p>Modelling indicates that if the MSB channel was realigned to be straighter the current directions would be more regular assisting navigation. Sediment accumulation would not present a major issue if the majority of the East Arm sandbar was dredged.</p></p><p><a href="http://www.video.teledynemarine.com/photo/20174857/use-of-acoustic-techniques-for-the-determination"><img src="http://www.video.teledynemarine.com/19476794/20174857/5e95541c24318be6797ff3e759fce5a4/standard/download-1-thumbnail.jpg" width="600" height="338"/></a></p> http://www.video.teledynemarine.com/photo/20174857 Tue, 05 Dec 2017 09:33:21 GMT Use of Acoustic Techniques for the Determination of Net Sediment Transport... Presenter:David WilliamsAustralian Institute of Marine ScienceAbstractThe Marine Supply Base channel in Darwin Harbour, Northern Territory Australia provides access to berthing and loading at East Arm wharf for vessels that support the offshore energy industry. Sedimentation in the channel due to complex currents in the area is reducing navigational efficiency and safety. A combination of multi-beam echo sounder, utilising an Odom MB1 and Acoustic Doppler Current Profiler, using a network of TRDI Workshorse and Sentinel V, surveys were conducted over a 12 month period encompassing both dry and wet seasons. The MBES surveys mapped the extent of the MSB channel and the East Arm sandbar adjacent to the channel. Tidal current patterns determined from the ADCP surveys show that tidal currents in the area are highly variable and are stronger in the ebb tide direction except at the entrance to the navigation channel. Tidal current are more variable in the flood tide direction at all remaining sites along the channel. The strength and direction of the tidal currents indicate that sediment movement is along the channel toward the deeper seaward navigation channel. Fine sediments have deposited in the MSB berthing area slightly reducing the volume of the berthing pocket and also depositing toward the end of the channel. An annual sediment deposition rate of 100 mm over the berth area was determined via observations and modelling. Non-cohesive sand transport modelling, configured using data from the MBES and ADCP surveys, has indicated slow movement of the sandbar in a dominantly south west direction at between 100 – 200 mm per month. Fine sediment modelling indicates deposition in the MSB berth area of 20 – 50 mm/year under average conditions. Modelling indicates that if the MSB channel was realigned to be straighter the current directions would be more regular assisting navigation. Sediment accumulation would not present a major issue if the majority of the East Arm sandbar was dredged. Presenter:David WilliamsAustralian Institute of Marine ScienceAbstractThe Marine Supply Base channel in Darwin Harbour, Northern Territory Australia provides access to berthing and loading at East Arm wharf for vessels that support the offshore... The Teledyne Marine Channel 29:25 <p><p><b>Presenter:&nbsp;&nbsp;</b><br></p><p>David Williams<br><b>Australian Institute of Marine Science&nbsp;</b></p><h2><b>Abstract&nbsp;</b></h2>The Marine Supply Base channel in Darwin Harbour, Northern Territory Australia provides access to berthing and loading at East Arm wharf for vessels that support the offshore energy industry.<p></p> <p>Sedimentation in the channel due to complex currents in the area is reducing navigational efficiency and safety. </p> <p>A combination of multi-beam echo sounder, utilising an Odom MB1 and Acoustic Doppler Current Profiler, using a network of TRDI Workshorse and Sentinel V, surveys were conducted over a 12 month period encompassing both dry and wet seasons. The MBES surveys mapped the extent of the MSB channel and the East Arm sandbar adjacent to the channel. Tidal current patterns determined from the ADCP surveys show that tidal currents in the area are highly variable and are stronger in the ebb tide direction except at the entrance to the navigation channel. Tidal current are more variable in the flood tide direction at all remaining sites along the channel. The strength and direction of the tidal currents indicate that sediment movement is along the channel toward the deeper seaward navigation channel.</p> <p>Fine sediments have deposited in the MSB berthing area slightly reducing the volume of the berthing pocket and also depositing toward the end of the channel. An annual sediment deposition rate of 100 mm over the berth area was determined via observations and modelling. </p> <p>Non-cohesive sand transport modelling, configured using data from the MBES and ADCP surveys, has indicated slow movement of the sandbar in a dominantly south west direction at between 100 – 200 mm per month. Fine sediment modelling indicates deposition in the MSB berth area of 20 – 50 mm/year under average conditions.</p> <p>Modelling indicates that if the MSB channel was realigned to be straighter the current directions would be more regular assisting navigation. Sediment accumulation would not present a major issue if the majority of the East Arm sandbar was dredged.</p></p><p><a href="http://www.video.teledynemarine.com/photo/20174857/use-of-acoustic-techniques-for-the-determination"><img src="http://www.video.teledynemarine.com/19476794/20174857/5e95541c24318be6797ff3e759fce5a4/standard/download-1-thumbnail.jpg" width="600" height="338"/></a></p> adcp mb1 multibeam odom_channel rdi_channel tmtw tmtw17speaker TMTW_speaks http://www.video.teledynemarine.com/photo/12683903/mapping-and-measuring-eelgrass-beds-with-an-mb1 <p><p>This presentation was given at the Teledyne Marine Technology Workshop in San Diego 2015 by Ashley Norton from Center for Coastal and Ocean Mapping</p><p>Eelgrass plays many important roles in temperate coastal ecosystems, including as habitat for many species, and as a bio-indicator for water quality in many areas. </p> <p>The deepest edges of eelgrass beds are considered more vulnerable to water quality issues because of the pre-existing light limitation with increasing depth due to natural light attenuation. However, the deep edges of beds are also often the most difficult to delineate with satellite and aerial imagery often used for large-scale seagrass mapping programs. We are developing a methodology to characterize the depth limit (‘deep edge’), percent cover and canopy height of eelgrass beds at high resolution (~1 m) using water column acoustic backscatter data from an MB1 multi-beam echo-sounder. </p> <p>An automated data processing workflow is being developed that will use a combination of digital signal and image-processing techniques, including techniques originally developed for medical ultrasound imagery. These data can provide georeferenced acoustic imagery and depth information needed to document the location, structure, and spatial heterogeneity of eelgrass beds, with more spatial coverage than existing acoustic tools that mostly utilize single-beam echosounders. </p> <p>Water column data were collected over beds at 3 locations in the estuary in the summer of 2014, and preliminary data analysis shows that eelgrass patches as small as 1m2 and as short as 20 cm are detectable. Data was also collected concurrently in the summer of 2015, and they include1) ground-truth data from drop camera imagery and field surveys; 2) aerial surveys; and 3) acoustic backscatter data. The ability to process multi-beam water column data for eelgrass characterization may provide a new data source and tool for ecologists and managers interested in eelgrass distribution and characterization, as well as bathymetric information used for charting depths.</p></p><p><a href="http://www.video.teledynemarine.com/photo/12683903/mapping-and-measuring-eelgrass-beds-with-an-mb1"><img src="http://www.video.teledynemarine.com/9826383/12683903/31141f8c58716c7983f3c03d718f5f9b/standard/download-1-thumbnail.jpg" width="600" height="338"/></a></p> http://www.video.teledynemarine.com/photo/12683903 Fri, 29 Jan 2016 09:24:08 GMT Mapping and measuring eelgrass beds with an MB1 sonar This presentation was given at the Teledyne Marine Technology Workshop in San Diego 2015 by Ashley Norton from Center for Coastal and Ocean MappingEelgrass plays many important roles in temperate coastal ecosystems, including as habitat for many species, and as a bio-indicator for water quality in many areas. The deepest edges of eelgrass beds are considered more vulnerable to water quality issues because of the pre-existing light limitation with increasing depth due to natural light attenuation. However, the deep edges of beds are also often the most difficult to delineate with satellite and aerial imagery often used for large-scale seagrass mapping programs. We are developing a methodology to characterize the depth limit (‘deep edge’), percent cover and canopy height of eelgrass beds at high resolution (~1 m) using water column acoustic backscatter data from an MB1 multi-beam echo-sounder. An automated data processing workflow is being developed that will use a combination of digital signal and image-processing techniques, including techniques originally developed for medical ultrasound imagery. These data can provide georeferenced acoustic imagery and depth information needed to document the location, structure, and spatial heterogeneity of eelgrass beds, with more spatial coverage than existing acoustic tools that mostly utilize single-beam echosounders. Water column data were collected over beds at 3 locations in the estuary in the summer of 2014, and preliminary data analysis shows that eelgrass patches as small as 1m2 and as short as 20 cm are detectable. Data was also collected concurrently in the summer of 2015, and they include1) ground-truth data from drop camera imagery and field surveys; 2) aerial surveys; and 3) acoustic backscatter data. The ability to process multi-beam water column data for eelgrass characterization may provide a new data source and tool for ecologists and managers interested in eelgrass distribution and characterization, as well as bathymetric information used for charting depths. This presentation was given at the Teledyne Marine Technology Workshop in San Diego 2015 by Ashley Norton from Center for Coastal and Ocean MappingEelgrass plays many important roles in temperate coastal ecosystems, including as habitat for many... The Teledyne Marine Channel 21:47 <p><p>This presentation was given at the Teledyne Marine Technology Workshop in San Diego 2015 by Ashley Norton from Center for Coastal and Ocean Mapping</p><p>Eelgrass plays many important roles in temperate coastal ecosystems, including as habitat for many species, and as a bio-indicator for water quality in many areas. </p> <p>The deepest edges of eelgrass beds are considered more vulnerable to water quality issues because of the pre-existing light limitation with increasing depth due to natural light attenuation. However, the deep edges of beds are also often the most difficult to delineate with satellite and aerial imagery often used for large-scale seagrass mapping programs. We are developing a methodology to characterize the depth limit (‘deep edge’), percent cover and canopy height of eelgrass beds at high resolution (~1 m) using water column acoustic backscatter data from an MB1 multi-beam echo-sounder. </p> <p>An automated data processing workflow is being developed that will use a combination of digital signal and image-processing techniques, including techniques originally developed for medical ultrasound imagery. These data can provide georeferenced acoustic imagery and depth information needed to document the location, structure, and spatial heterogeneity of eelgrass beds, with more spatial coverage than existing acoustic tools that mostly utilize single-beam echosounders. </p> <p>Water column data were collected over beds at 3 locations in the estuary in the summer of 2014, and preliminary data analysis shows that eelgrass patches as small as 1m2 and as short as 20 cm are detectable. Data was also collected concurrently in the summer of 2015, and they include1) ground-truth data from drop camera imagery and field surveys; 2) aerial surveys; and 3) acoustic backscatter data. The ability to process multi-beam water column data for eelgrass characterization may provide a new data source and tool for ecologists and managers interested in eelgrass distribution and characterization, as well as bathymetric information used for charting depths.</p></p><p><a href="http://www.video.teledynemarine.com/photo/12683903/mapping-and-measuring-eelgrass-beds-with-an-mb1"><img src="http://www.video.teledynemarine.com/9826383/12683903/31141f8c58716c7983f3c03d718f5f9b/standard/download-1-thumbnail.jpg" width="600" height="338"/></a></p> mb1 odom_channel TMTW_speaks http://www.video.teledynemarine.com/photo/12375145/dual-head-multibeam-bathymetry-mapping <p><p>Along the years, Rural Tech Company has realized a series of surveys of all kind in the Amazon region, especially in Tapajós River. One of the areas that has been studied since 2006 is São Luís do Tapajós in Pará state, near Itaituba city. There, is going to be built one of the five biggest Brazilian hydropowers on terms of energy generation. Current studies, already at an advanced level, include a multibeam survey of about 30 square quilometers. Mapping with a Teledyne Odom MB1 Dual Head (phase and amplitude bottom detection bathymetry), all the riverbed structures and morphologies were well defined, allowing, this way, a great amount of information to be extracted, extremely important for that involved on the hydropower construction study. On the other hand, the contractors could plan their projects with the best benefit-cost ratio, taking advantage of the natural features mapped with the bathymetry.</p><div><br></div></p><p><a href="http://www.video.teledynemarine.com/photo/12375145/dual-head-multibeam-bathymetry-mapping"><img src="http://www.video.teledynemarine.com/10820439/12375145/56631240616a0accec42581aaccf46c4/standard/download-1-thumbnail.jpg" width="600" height="338"/></a></p> http://www.video.teledynemarine.com/photo/12375145 Fri, 13 Nov 2015 12:55:08 GMT Dual Head Multibeam bathymetry mapping riverbed structures and morphologies... Along the years, Rural Tech Company has realized a series of surveys of all kind in the Amazon region, especially in Tapajós River. One of the areas that has been studied since 2006 is São Luís do Tapajós in Pará state, near Itaituba city. There, is going to be built one of the five biggest Brazilian hydropowers on terms of energy generation. Current studies, already at an advanced level, include a multibeam survey of about 30 square quilometers. Mapping with a Teledyne Odom MB1 Dual Head (phase and amplitude bottom detection bathymetry), all the riverbed structures and morphologies were well defined, allowing, this way, a great amount of information to be extracted, extremely important for that involved on the hydropower construction study. On the other hand, the contractors could plan their projects with the best benefit-cost ratio, taking advantage of the natural features mapped with the bathymetry. Along the years, Rural Tech Company has realized a series of surveys of all kind in the Amazon region, especially in Tapajós River. One of the areas that has been studied since 2006 is São Luís do Tapajós in Pará state, near Itaituba city. There,... The Teledyne Marine Channel 25:49 <p><p>Along the years, Rural Tech Company has realized a series of surveys of all kind in the Amazon region, especially in Tapajós River. One of the areas that has been studied since 2006 is São Luís do Tapajós in Pará state, near Itaituba city. There, is going to be built one of the five biggest Brazilian hydropowers on terms of energy generation. Current studies, already at an advanced level, include a multibeam survey of about 30 square quilometers. Mapping with a Teledyne Odom MB1 Dual Head (phase and amplitude bottom detection bathymetry), all the riverbed structures and morphologies were well defined, allowing, this way, a great amount of information to be extracted, extremely important for that involved on the hydropower construction study. On the other hand, the contractors could plan their projects with the best benefit-cost ratio, taking advantage of the natural features mapped with the bathymetry.</p><div><br></div></p><p><a href="http://www.video.teledynemarine.com/photo/12375145/dual-head-multibeam-bathymetry-mapping"><img src="http://www.video.teledynemarine.com/10820439/12375145/56631240616a0accec42581aaccf46c4/standard/download-1-thumbnail.jpg" width="600" height="338"/></a></p> mb1 MB1 Dual Head odom_channel odom hydrographic TMTW_speaks http://www.video.teledynemarine.com/photo/10780721/autonomous-on-board-data-collection-and-processing <p>Michael Redmayne from Caris gives his view on the usage of Autonomous Surface Vessels from the Underwater Technology Conference held in Boston, September 2014.<br><br>How are the dynamics of survey platforms changing? Are we seeing a shift into using AUVs for surveying and what are the operational requirements for this kind of survey? &nbsp;</p><p><a href="http://www.video.teledynemarine.com/photo/10780721/autonomous-on-board-data-collection-and-processing"><img src="http://www.video.teledynemarine.com/9826383/10780721/0f70e6c3b3fe4c28110afd9f35c70270/standard/download-1-thumbnail.jpg" width="600" height="338"/></a></p> http://www.video.teledynemarine.com/photo/10780721 Thu, 24 Sep 2015 14:54:28 GMT Autonomous on-board data collection and processing using the Teledyne Odom... Michael Redmayne from Caris gives his view on the usage of Autonomous Surface Vessels from the Underwater Technology Conference held in Boston, September 2014.How are the dynamics of survey platforms changing? Are we seeing a shift into using AUVs for surveying and what are the operational requirements for this kind of survey? Michael Redmayne from Caris gives his view on the usage of Autonomous Surface Vessels from the Underwater Technology Conference held in Boston, September 2014.How are the dynamics of survey platforms changing? Are we seeing a shift into using... The Teledyne Marine Channel 10:50 <p>Michael Redmayne from Caris gives his view on the usage of Autonomous Surface Vessels from the Underwater Technology Conference held in Boston, September 2014.<br><br>How are the dynamics of survey platforms changing? Are we seeing a shift into using AUVs for surveying and what are the operational requirements for this kind of survey? &nbsp;</p><p><a href="http://www.video.teledynemarine.com/photo/10780721/autonomous-on-board-data-collection-and-processing"><img src="http://www.video.teledynemarine.com/9826383/10780721/0f70e6c3b3fe4c28110afd9f35c70270/standard/download-1-thumbnail.jpg" width="600" height="338"/></a></p> caris mb1 odom_channel TMTW_speaks uts14 http://www.video.teledynemarine.com/photo/10778032/interface-setup-teledyne-pds-for <p><p>This video gives you an introduction on how to setup a MB1 Multibeam Echosounder with the Teledyne&nbsp;PDS interface. &nbsp;</p></p><p><a href="http://www.video.teledynemarine.com/photo/10778032/interface-setup-teledyne-pds-for"><img src="http://www.video.teledynemarine.com/9826383/10778032/e3db2072897c4a2ad5d5f462931a35e6/standard/download-1-thumbnail.jpg" width="600" height="450"/></a></p> http://www.video.teledynemarine.com/photo/10778032 Mon, 05 Jan 2015 14:23:06 GMT Interface setup Teledyne PDS for Odom MB1 This video gives you an introduction on how to setup a MB1 Multibeam Echosounder with the TeledynePDS interface. This video gives you an introduction on how to setup a MB1 Multibeam Echosounder with the TeledynePDS interface. The Teledyne Marine Channel 14:59 <p><p>This video gives you an introduction on how to setup a MB1 Multibeam Echosounder with the Teledyne&nbsp;PDS interface. &nbsp;</p></p><p><a href="http://www.video.teledynemarine.com/photo/10778032/interface-setup-teledyne-pds-for"><img src="http://www.video.teledynemarine.com/9826383/10778032/e3db2072897c4a2ad5d5f462931a35e6/standard/download-1-thumbnail.jpg" width="600" height="450"/></a></p> mb1 pds2000 PDS_CHANNEL software training