sonar Articles

  • Low Visibility Diving – A look at Sonar Integration

    Updated sonar technologies are making low visibility diving possible – making them the ideal tool to be equipped on underwater drones for Search & Rescue missions and salvage operations. Unless you are swimming off the coast of Cancun, your nearest water source may not always be incredibly clear. Visibility below the surface often limits the ability of search and rescue missions ...


    By Deep Trekker Inc.

  • A machine learning approach for estimation of shallow water depths from optical satellite images and sonar measurements

    There has been a rapid growth in the field of remote sensing and its various applications in the area of water management. Nowadays, there are several remote sensing techniques that can be used as a source to derive bathymetry data along coastal areas. The key techniques are: sonar (sound navigating and ranging), LiDAR (light detection and ranging) and high-resolution satellite images. The ...


    By IWA Publishing

  • Finding the needle in the hay stack - tracing seabed gas seepages using hullborne multibeam echo sounder, and AUV based sonar and optical systems case study

    Scientific objective A better understanding of the shallow geological systems in the Barents Sea with particular attention to fluid flow Specific objectives Identify regional spatial distribution of gas flares within an area of 3000 km2 in the Barents Sea Identify and describe associated structures (i.e. pockmarks, carbonate reefs) using ...


    By Franatech GmbH

  • Application of high-resolution geophysical methods in submarine pipeline inspection

    High-resolution marine geophysical equipment employed includes single beam echo sounder (SBES), multi-beam echo sounder (MBES), sub-bottom profiler (SBP) and side scan sonar (SSS). By employing SBES, the reflection curve in shallow water reveals the real condition of pipeline; while in deep water, the reflection or diffraction curve can't reveal the real condition. Compared with SBES, MBES is ...


    By Inderscience Publishers

  • Loadtest - Sonicaliper success story

    In June 2008, a project was initiated between SoilVision Systems Ltd. and LoadTest Inc. relating to the development of software to support their newly developed SoniCaliper instrument. Prototype software for processing the data from this instrument had been developed by LoadTest Inc.; SoilVision Systems Ltd. was hired to bring the software to a professional level and implement 3D graphical ...


    By SoilVision Systems Ltd.

  • Permanent Monitoring Systems for Seabed Leakage Detection

    Seabed leaks Where do they come from? Natural vents: Faults, Pockmarks, and Chimneys Melting hydrates Shallow gas layers Long term leakage along well casings (cracked cement) Injection: fault re-activation/fracturin Lost well control nd failing barriers The mysterious pockmarks at the ...


    By Franatech GmbH

  • Advancing Omics Research and Reducing Bias with New MS Technology for Data-Independent Acquisition Experiments

    Targeted LC-MS based assays are increasingly applied in the post-discovery Omics area with an emphasis on validation, the first of many phases in translational research; and in studies that are aimed at gaining the understanding of biological systems in terms of drug development and treatment. Understanding the context of analytical results is driving current research, and therefore driving the ...


    By Waters Corporation

  • The importance of wastewater force main management

    Condition assessment and management of wastewater force mains has historically been challenging for operators. Conventional methods (e.g. visual inspection, sonar and laser profiling) do not provide a comprehensive condition assessment because they do not quantify the loss of structural capacity. As WEFTEC 2013 in Chicago approaches, ...


    By Pure Technologies

  • Origin of rippled scour depressions associated with cohesive sediments in a shoreface setting (eastern Bay of Seine, France)

    Side-scan sonar investigations in the eastern part of the macrotidal Bay of Seine have revealed the presence of numerous rippled scour depressions (RSDs) at water depths of 5–9 m. The sediments in these depressions consist essentially of coarse-grained shell hash derived from underlying Holocene sediments dated at roughly 6,500 years BP, and arranged in large wave-generated ripples. The shallow ...


    By Springer

  • The Importance of Wastewater Force Main Management

    Condition assessment and management of wastewater force mains has historically been challenging for operators. Conventional methods (e.g. visual inspection, sonar and laser profiling) do not provide a comprehensive condition assessment because they do not quantify the loss of structural capacity. As WEFTEC 2013 in Chicago approaches, ...


    By Pure Technologies

  • Completing Condition Assessments using In-pipe GPR as Pipe Penetrating Radar

    Abstract This paper describes the development of Pipe Penetrating Radar (PPR), the underground in-pipe application of GPR, a non-destructive testing method that can detect defects and cavities within and outside mainline diameter (>18 in / 450mm) non-metallic (concrete, PVC, HDPE, etc.) underground pipes. The method uses two or more high frequency GPR antennae carried by a robot into ...


    By SewerVUE

  • An inflatable tunnel seal stops flooding of world`s largest undeveloped uranium mine

    The Cigar Lake Mine, located in the Athabasca Basin of Northern Saskatchewan, Canada, is sitting on the world's largest undeveloped high-grade uranium deposit in the world. Operated and majority-owned by Cameco Corporation, Cigar Lake is expected to eventually provide more than 10% of the world's mined uranium. But to extract the uranium ore, Cameco has to overcome significant technical ...


    By Petersen Products Company

  • Alum creek large diameter sewer assessment case study

    The Challenge The City of Columbus, like many municipalities, must make hard decisions on where to spend their limited capital improvement dollars. In tight economic conditions, a municipality’s decision to monitor, rehabilitate, or replace their assets is not cut and dry. Deferred maintenance of non-critical assets in one department may give other departments the monetary resources ...


    By Chester Engineers

  • A brief statement of airport applications for doppler SODAR systems

    Doppler SODAR Operating similar to a sonar the Doppler SODAR (Sonic Detection and Ranging) directly measures the atmospheric wind speed and direction at multiple altitudes simultaneously. These systems utilize the Doppler effect imposed on the received acoustic signal echoed by the atmosphere for the wind measurements. The Doppler effect is the common observation that the acoustic signal ...

  • Views from Inside Pearl Harbor’s USS Arizona

    Deep Trekker ROVs Provide Survivor First Live View Inside USS Arizona This year marks the seventy-fifth anniversary of Pearl Harbor and the sinking of the USS Arizona. Unlike most other ships that were bombed on that fateful day, the steel battleship suffered so much damage that it was never salvaged. The final resting place of over 900 souls, the ship has remained submerged in a shallow ...


    By Deep Trekker Inc.

  • Four Major Benefits of Horizontal Hydraulic Auger Dredges

    Horizontal hydraulic auger dredging has been around for nearly 50 years, but remains the unknown stepchild of the dredging world. That may be changing as environmental dredging becomes more prominent. Horizontal hydraulic auger dredges are ideal for environmental projects for several reasons. First, horizontal hydraulic auger dredges are small. I know everybody wants bigger, but small has ...


    By SRS Crisafulli, Inc.

  • The Experts’ Views of Horizontal Hydraulic Auger Dredging

    I attended the 42nd Texas A & M University dredging short course in January 2013. Despite the mountain of excellent information I gleaned from the course, I was disappointed that my dredging field wasn’t featured. Horizontal hydraulic auger dredging ...


    By SRS Crisafulli, Inc.

  • Underwater Bridge Inspections – Drones Conducting Remote Evaluations

    Deep Trekker Remotely Operated Vehicles (ROV), or underwater drones, are establishing themselves as the ideal tool for underwater bridge inspections. It goes without saying that the structural integrity of a bridge is extremely important; after all, you’re only either walking, driving, or riding a train across it. With the public safety in mind and to continue the flow of traffic, these ...


    By Deep Trekker Inc.

  • Expanding marine protected areas to restore fisheries

    After World War II, accelerating population growth and steadily rising incomes drove the demand for seafood upward at a record pace. At the same time, advances in fishing technologies, including huge refrigerated processing ships that enabled trawlers to exploit distant oceans, enabled fishers to respond to the growing world demand. In response, the oceanic fish catch climbed from 19 million tons ...


    By Earth Policy Institute

  • Case study - Washington Suburban Sanitary Commission

    After WSSC began experiencing major PCCP failures in the 1970s, it developed a strong commitment to infrastructure management technology in favor of large capital replacements. Beginning in 2007, WSSC and Pure Technologies began a partnership to create a comprehensive PCCP management program. The Washington Suburban Sanitary Commission (WSSC) is the 8th largest water and wastewater utility in ...


    By Pure Technologies

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