Using New Acoustic Technology to Help Conserve the Southern Ocean Ecosystem

As fisheries are starting to harvest krill resources to feed the world’s population, this must be done in a sustainable manner, based on accurate, scientific observations. Scientists at NOAA in the USA are now using sophisticated new acoustic technology to truly “see” krill in the Southern Ocean. How will this scientific research help conserve the Southern Ocean ecosystem? Today, one-third of commercially important marine fish stocks in the ocean are suffering from the effects of overfishing. As krill is becoming an important supplement for fisheries looking to harvest new resources, sustainable management of krill fisheries has come to the fore.... (read more)
2020-07-28 09:19:28

Dutch Flood Defence, the Natural Way

When the Dutch government and research institutions wanted to monitor how waves and currents would affect the pioneering use of artificial sand banks to protect a levee in a non-tidal freshwater system, Nortek was selected to supply key measuring instruments and set up the data telemetry system. The Houtribdijk is a 25km-long levee, or dike, separating two large artificial lakes, the IJsselmeer and the Markermeer. The lakes and accompanying levees protect the Netherlands from the forces of the North Sea’s extreme weather events, and from flooding from inland freshwater river systems. After years of exposure to the elements, the Houtribdijk... (read more)
2020-05-07 03:17:31

ASL Environmental Sciences Assists with Oceanographic Data Collection for Labrador Marine Research and Monitoring

In a collaborative effort with the Nunatsiavut government and Dalhousie University to measure ice, water current and other physical and biological properties of the marine environment, ASL Environmental Sciences Inc. contributed a prototype Log Ice Profiling Sonar (LogIPS). On 15 February, the sonar was deployed on a taut-line mooring in the waters off Nain, Nunatsiavut, Labrador, Canada. The mooring also contained an acoustic doppler current profiler (ADCP), as well as data loggers for chlorophyll, turbidity, temperature-salinity and dissolved oxygen. The mooring was deployed through a hole cut in the sea ice, with an open-water recovery planned for later this year. The... (read more)
2020-05-07 01:43:35

How a Hydrographic and Ocean Technology Provider Organizes Interactive Presentations

What kinds of webinars appeal to the ocean technology community in these extraordinary times? Hydrographic and ocean technology provider Nortek has learnt that interactive digital events with an emphasis on learning and practical examples have a massive appeal. The Norway-based company has recently launched a live webinar series with over 20 classes and interactive presentations. These are tailor-made for people working with ocean technology, such as oceanography, subsea navigation, marine navigation and ocean surveying. The educational webinar series covers everything from real-time data collection near the coast to using acoustic Doppler current profilers (ADCPs) to estimate suspended sediment properly and how to get accurate... (read more)
2020-04-17 09:24:48

Sonardyne Reveals Latest Seabed-to-shore Subsea Technologies

Underwater technology provider Sonardyne International Ltd has announced new additions to its 2020 product line-up. With a focus on compact yet capable unmanned and vessel instruments, Sonardyne has unveiled SPRINT-Nav Mini, a compact guidance and control solution, as well as ADCP functionality for its Syrinx Doppler velocity log (DVL) and a smaller, lighter version of its popular Gyro ultrashort baseline (USBL) transceiver. Fixed Frequency Outputs SPRINT-Nav Mini provides guidance and control outputs – orientation, velocity, altitude and depth – in a single instrument that weighs just 0.7kg in water for the 300 m-rated version. By tightly fusing the information from each... (read more)
2020-03-26 01:00:08

Securing Offshore Oil and Gas Infrastructure with USVs

Employing commercial-off-the-shelf USVs that can be rapidly reconfigured with a diverse range of sensors can enhance the ability to deliver energy to America and the world. This is a win-win for the energy industry, says George Caldorisi when he describes the securing of oil and gas infrastructure with Unmanned Surface Vehicles. While the exigencies of climate change have led to major strides in the development and deployment of renewable energy sources such as solar, wind and others, the world’s energy needs will continue to be met primarily by oil and natural gas for the foreseeable future. As readers of Hydro International are well aware, the strategic implications of the United States’ transition from energy dependence to energy independence to becoming a net oil and gas exporter are being felt worldwide. While some saw this sea change coming, most did not, and the community of nations is still coming to grips with... (read more)
2020-04-06 09:50:21

Teledyne Marine Announces 2020 Academic Product Grant

Six months free product usage and technical consultations
Teledyne Marine offers the next generation of technologists and explorers the opportunity to utilize the organization’s leading-edge technology for planned 2020 programmes free of charge via their 2020 Academic Product Grant. The company delivers the widest range of technology in the industry and will share a full suite of these technologies with the academic community to address an array of potential global research programmes.  This grant is open to all students from accredited universities or institutions pursuing oceanographic or hydrographic studies and provides up to 6 months' free product usage and technical consultations to help ensure their success. Products in this year’s grant... (read more)
2020-01-14 11:49:06

USV Completes First Autonomous Circumnavigation of Antarctica

High-quality and Reliable Data Is Needed for Research Use
A 7m (23ft) long, wind-powered unmanned surface vehicle (USV) has become the first unmanned system to circumnavigate Antarctica. Known as SD 1020 and equipped with a suite of science-grade sensors, the vehicle collected data in previously uncharted waters, enabling new key insights into ocean and climate processes. A 7m (23ft) long, wind-powered unmanned surface vehicle (USV) has become the first unmanned system to circumnavigate Antarctica. Known as SD 1020 and equipped with a suite of science-grade sensors, the vehicle collected data in previously uncharted waters, enabling new key insights into ocean and climate processes. USV SD 1020 left for the 196-day mission from Southport in Bluff, New Zealand, on 19 January 2019. It returned to the same port on 3 August after sailing over 22,000km (13,670 miles or 11,879 nautical miles) around Antarctica. During the mission, the vehicle survived freezing temperatures, 15m (50ft) waves, 130km/h (80mph) winds... (read more)
2019-10-03 03:08:58

Flanders Marine Institute in Belgium Takes Delivery of a Gavia AUV

Teledyne Gavia announced that it has completed the sale and recent Sea Acceptance Testing of a Gavia AUV to the Flanders Marine Institute (VLIZ) in Oostende, Belgium. The VLIZ Gavia is rated to 1,000m depth in a low logistics form factor and includes an array of scientific instruments to meet current and future VLIZ research requirements. The modular nature of the GAVIA AUV allows sensors to be added as mission requirements dictate. The VLIZ Gavia is configured for diverse research applications and includes an iXblue INS, coupled with a Teledyne RD Instruments Pathfinder ADCP up/down for highly accurate navigation and... (read more)
2019-09-30 08:37:17

Unmanned Vehicle Deploys ADCP Mooring Near Calving Ice Cliff

Global concern about rising sea levels has thrust increasing loss of glaciers and ice sheets into public attention. A key uncertainty in projections of sea level rise is the rate of ice loss at the seaward margin of glaciers. The glaciers of Greenland and Alaska that reach the sea have therefore received increased scientific notice. Yet the ways in which warm ocean water interacts with and erodes the face of these glaciers have been largely unobserved. Difficult and Dangerous Operating near an ice cliff that is actively calving icebergs - above and below the water line - is both difficult... (read more)
2019-06-10 10:46:22
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