WHOI: New Discovery Reveals Sharks May Detect and Produce Sound
when approached by divers. Both ray species belong to the ancient elasmobranch family, a class of cartilaginous fish with distinctive anatomical features. Recently, three other related species, including the blonde ray, the rough skate, and the marbled electric ray, were also reported to produce short, broadband clicks when disturbed by divers, possibly as a threat response. Tracing these evolutionary transitions that go back 450 million years, researchers began to suspect that sharks may be capable of similar sound production.Whether rig sharks can acoustically sense their own click sounds, or what function
Sercel Launches DFU-3C Node, Extending WiNG Range
.The new integrated three-component node acquires the most comprehensive and high-definition data for outstanding imaging, characterization and monitoring of the subsurface. As part of the WiNG range, it comes complete with unique advanced features as standard, such as the ultra-sensitive QuietSeis® broadband digital sensor and Pathfinder transmission management technology. Combined with its market-leading compact and lightweight design, the DFU-3C offers unprecedented precision, efficiency and portability."Building on the success of our widely used WiNG single-component node, this three-component
GeoAcoustics to Launch Two New Side Scan Sonars at Ocean Business
GeoAcoustics Ltd will debut a new Side Scan Sonar range at Ocean Business 2025 next week, adding to its hydroacoustic technology portfolio.Designed to deliver superior visualization for diverse marine survey applications, the GeoScan range currently features two models, both offering simultaneous broadband dual frequency operation and advanced sonar processing features.The GeoScan 2361 operates at 300 kHz and 600 kHz to maximize range performance, while the GeoScan 2491 runs at 400 kHz and 900 kHz to deliver even higher image resolution. Both include a fast 60 kHz update rate, CW and Chirp pulse
Sercel Banks Contract for TPS in GOM Survey
Sercel announced a contract with a marine geophysical company for the deployment of its Tuned Pulse Source (TPS), a low-frequency broadband marine seismic source, and the provision of related support services. The geophysical company is deploying the TPS solution to acquire an ultralong-offset ocean-bottom node (OBN) survey in the Gulf of Mexico, which started in November.
Impact Subsea Launches New Profiling Sonar Sensor
multiple mechanically scanned profilers – enabling much faster scanning capability when using multiple profilers and thus decreased survey times. Ben Grant, Managing Director of Impact Subsea, said: “With integrated IS3 Impact Subsea Signalling Scheme coupled with a highly sensitive broadband composite transducer, the ISP360 delivers unparalleled accuracy for sonar profiling with optional pitch and roll, all from a single device.”The ISP360 is designed for pipeline profiling, trench profiling, positioning of a vehicle in a tank, internal pipe and tank profiling, asset positioning
Teledyne RD Instruments Debuts Workhorse Proteus ADCP
Doppler Sonar Platform (ADSP) - the most advanced Doppler processing platform; Catalyst Processor for fast processing; new RDI AHRS and dynamic bin mapping; elegant planning software; five beams for direct measurement of ocean’s vertical velocity; versatile deployment options; robust, repeatable broadband techniques; and multiple communication options.Image courtesy Teledyne RD Instruments (RDI
TGS Kicks Off Seismic Survey in Indonesia
cover over 1,800 kilometers of new 2D seismic data across the southeastern part of the basin, using a 12 km long offset streamer.This marks the fifth seismic survey TGS has conducted in Indonesia this year.Supported by industry funding, the project will leverage advanced processing techniques such as broadband Pre-Stack Time Migration (PSTM), Pre-Stack Depth Migration (PSDM), and 24 Hz Full Wave Inversion (FWI) to achieve high-quality imaging and detailed subsurface insights."Our latest seismic acquisition in Indonesia highlights TGS's dedication to delivering exceptional subsurface imaging
Kongsberg Discovery Announces Echo Sounder Upgrade
the expense and time needed for repeated CTD probes. In addition, improved understanding of sound propagation serves as important input for various acoustic instruments used for water-column object detection.Seabed classification and suspended sediments in water columnThe EK80 is the only calibrated broadband acoustic system that can measure backscatter to provide absolute values across sites and sensor platforms. Serving as a supplement to high-resolution seafloor mapping systems, the EK80 provides valuable information required to classify seafloor composition from acoustic surveys. In addition, recent
Viridien Delivers OBN Solution for North Sea Survey
be deployed on an upcoming seismic survey project in the North Sea.Viriden secured the contract through its Sensing & Monitoring business line, marketed under the Sercel brand, from a major customer, whose name was not disclosed.Sercel GPR nodes feature the QuietSeis MEMS technology, which provides broadband signal sensing capability, fidelity, and ultra-quiet performance, to deliver subsurface imaging.The GPR300 excels in shallow water depths down to 300 meters and has a compact, lightweight design for easy manual handling and simplified deployment and retrieval.“Viridien is totally committed
February 2025
