Applied Acoustics Launches Pyxis Integrated Inertial USBL System

Applied Acoustic Engineering (AAE) has announced the launch of its next-generation USBL system, Pyxis USBL. Taking its name from the constellation Pyxis Nautica – the mariner’s compass – Pyxis USBL combines the best of AAE’s subsea acoustic tracking technology with a highly advanced inertial navigation system (INS) from a respected name in the industry, to create a state-of-the-art, inertially aided Ultra Short Baseline system capable of accurate subsea tracking with survey-grade performance. The combination of AAE’s Sigma 2 acoustic protocols and SBG Systems' high-precision Navsight Apogee Marine INS brings together two leading names in the field of marine technology, resulting... (read more)
2020-09-10 03:10:16

Unmanned Boat Used in High-salinity Brine Lake

In early July 2020, an OceanAlpha ME120 unmanned surface vessel (USV) joined the national potash mining project in Lop Nur in the Chinese province of Xinjiang to conduct routine bathymetric surveys. Lop Nur used to be the largest lake in north-western China before it dried up in 1972. Known as the ‘Sea of Death’, Lop Nur is located in the south-eastern part of Xinjiang Uygur Autonomous Region. It is now an enormous desert, with no grass, streams or birds, where summer temperatures can reach record highs. So, what is an unmanned boat doing in a dry lake? Following a discovery by... (read more)
2020-09-01 12:47:35

US$1M to Enhance Autonomous Vehicle for Monitoring Harmful Algal Blooms Project

As part of the NOAA-led Integrated Ocean Observing System (IOOS) Ocean Technology Transition (OTT) project, the University of Washington, Oregon State University, Ocean Aero, the Northwest Association of Networked Ocean Observing Systems (NANOOS) and NOAA Northwest Fisheries Science Center partners will receive US$1M in funding over the next three years to enhance and deploy Ocean Aero’s Triton Class autonomous vehicle to augment HAB sampling at remote offshore locations on the Oregon and Washington coasts. “Harmful Algal Blooms can cause severe environmental, economic and societal damage, and the water sampling system we are developing with the University of Washington Applied Physics... (read more)
2020-09-01 08:35:49

How Copernicus Sentinel-6 Will Monitor the Oceans

Rate of Sea-level Rise Accelerates
With millions of people around the world at risk from rising seas, it is essential to continue measuring the changing height of the sea surface to ensure that decision makers are equipped to take appropriate mitigating action. Copernicus Sentinel-6, a new satellite, will take the lead in charting sea-level change. Sentinel-6 carries a radar altimeter to provide high-precision and timely observations of the topography of the global ocean. This information is essential for the continued monitoring of changes in sea level, a key indicator of climate change. It is also essential for operational oceanography. ESA’s director of Earth Observation Programmes, Josef Aschbacher, said at... (read more)
2020-08-28 10:10:46

ASL to Perform Hydroacoustic Studies of Eulachon Fish Distribution

ASL Environmental Sciences (ASL) was chosen by Hemmera Envirochem Inc. and the Vancouver Fraser Port Authority to perform a hydroacoustic study of eulachon fish (Thaleichthys pacificus) distribution in the vicinity of Deltaport Terminals off the mouth of the Fraser River, BC, Canada. To support the development of the Dredging and Sediment Discharge Plan that will form part of the Construction Environmental Management Plan of the Roberts Bank Terminal 2 Project, the port authority has committed to developing eulachon-specific mitigation that will be used during dredging activities. A pilot study was developed to examine the efficacy of hydroacoustic techniques in detecting... (read more)
2020-08-24 10:53:16

Largest Planned Tidal Stream Project in the World

Marine Mammal Monitoring Equipment Undergoes Intensive Subsea Testing
Balmoral Subsea Test Centre in Aberdeen, Scotland, has carried out hydrostatic tests on equipment that will be used to monitor the interaction between tidal turbines and marine mammals in the Pentland Firth. This project is currently the largest planned tidal stream project in the world and is the only commercial multi-turbine array to have commenced construction, explains Steve Gibb, group public relations manager at the Balmoral Subsea Test Centre. The linear actuators that were tested form part of a marine mammal monitoring station anchored to the sea floor. Utilizing both passive- and active-acoustic tracking techniques, the station will collect data... (read more)
2020-08-24 10:09:15

Bathymetry and the Power of Sound

How a Single Device Can Change Our Understanding of the Depths Below Us
The single-beam echosounder has come a long way. First developed in the early 20th century in response to the RMS Titanic disaster of 1912, early models used a Fessenden oscillator to generate a signal of around 1kHz. The resulting broad beam was suitable for depth measurements and the location of large targets – a huge technological step forward – but incapable of the fine resolutions required to gain information as to the nature of the seabed. Jump forward a little over a century and the picture is very different. Advanced systems, working across multiple frequencies, can operate with beam widths as... (read more)
2020-08-18 08:35:03

Unmanned Technology Narrows Data Gap of the World’s Most Sediment-laden River

With a total length of 5,464km, the Yellow River is the second-longest river in China. Its middle section runs through the Loess Plateau, where it picks up sand and dust, making it the most sediment-laden river in the world. Yellow River runs through nine Chinese cities and affects the daily lives of tens of thousands of people who live alongside the river. To better protect the ecology of the watershed, monitoring changes in the underwater terrain and studying the pattern of river evolution can provide important data to support river management and flood control. However, technical limitations and harsh environmental... (read more)
2020-08-14 02:17:58

New Subsea Survey Collaboration Completes First Joint Project

An up-and-coming name in the subsea sector has successfully collaborated with a leading provider of data collection to complete their first joint project in the south Caribbean Sea. Sulmara Subsea recently joined forces with XOCEAN to deliver a seabed survey off the coast of Aruba on behalf of SeaDrill using an XO-450 Unmanned Surface Vessel (USV). Operating 15km off Barcadera Port on the western side of Aruba, the USV completed the 26km2 seafloor survey in 70m of water using high-resolution multibeam. The objectives were to identify any seafloor features and to classify the seabed to allow moorings to be safely... (read more)
2020-08-14 10:32:05

QPS Adds Direct FarSounder Integration to Qinsy

Quality Positioning Services (QPS), specialized in maritime geomatics software and services, has integrated FarSounder’s Argos Forward Looking Sonars (FLS) into their Qinsy survey software package. Argos sonar users are now able to display their FLS bathymetric data in the Qinsy platform along with the rest of the survey data they are capturing. QPS’s hydrographic software products are used by a variety of commercial and scientific survey vessels along with many militaries around the world. Their customer the Royal Netherlands Navy recently installed FarSounder’s Argos 1000 sonars on two of their latest upgraded vessels. The navy was an important part in... (read more)
2020-08-13 10:43:15
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