Metal Geochemistry Meets Machine Learning in the North Atlantic

Surveying the seabed is still an enormous task. So far, only 20% of the regions under water have been mapped with echosounders. This refers only to the topography, not to the content, i.e. the composition of the seafloor. “The existing sampling efforts are virtually just tiny pinpricks in the vast amount of uncertainty that has so far covered the seafloor,” says Dr Timm Schöning from the Deep-Sea Monitoring group of GEOMAR, who led an iAtlantic expedition aboard the German research vessel Maria S. Merian in autumn 2020. Over a period of four weeks, a team of geochemists and data scientists... (read more)
2020-11-27 11:25:25

High-resolution Survey on Versatile USV

Skansen is a historic area in the city of Trondheim in central Norway and home to the Skansen Bridge, a 52m span bascule railway bridge that opens for marine traffic to access the Trondheim Fjord. The Skansen Bridge was built in 1918 and designed by structural engineer Joseph Strauss, who also designed the Golden Gate Bridge in San Francisco. The displacement of rocks and other objects in shallow waters over time can result in structural integrity issues for bridge piers such as the Skansen Bridge and hazards for vessel traffic, so that regular inspection of the structural integrity is required... (read more)
2020-11-23 04:09:52

Hydrospatial and the Marine Environment

The First Steps to Going Beyond Charting
Hydrographic offices (HOs) today exist in a world of accelerating technological change that is influencing human behaviour and creating new needs and ways of exploiting data to understand our world. HOs have traditionally been the producers of nautical information for safety of navigation. By the end of the 20th century, with the appearance of the IHO S-57 Standard, their main challenge was to evolve into a central database production system. Now, the critical challenge and opportunity is to evolve from there into a true geospatial agency, developing a hydrospatial information system (HIS) capable of providing products and services for multidimensional... (read more)
2020-11-23 11:19:07

Seatools Equips Boskalis with Plough Position Monitoring Buoy

On behalf of its client Boskalis, subsea technology company Seatools completed the development, manufacturing and testing of a plough position monitoring buoy. After successful sea trials, the buoy is now being deployed for a subsea cable route clearance project, where the buoy has been fitted onto a subsea plough. Whereas USBL is the conventional way to determine the position of subsea vehicles, this acoustic method fails to function properly for towed vehicles that operate in shallow waters with much ambient noise, such as thruster wash. Looking for a solution that meets the strict requirements for following and registering the defined... (read more)
2020-11-17 08:46:37

New Bathymetric Data Provides Key Insights into Glacial Melting Processes

New bathymetric and oceanographic data collected by an international team of ocean scientists provides important insights into the processes that have been controlling the rapid loss of the Greenland Ice Sheet over the last four decades. The groundbreaking data, published in the Nature Journal Communications Earth & Environment, will be contributed to The Nippon Foundation-GEBCO Seabed 2030 Project, which aims to have the definitive and complete map of the ocean seafloor by 2030. The Swedish icebreaker Oden ventured into the previously unmapped Sherard Osborn Fjord, where the Ryder Glacier drains into the Arctic Ocean. Melting and calving glaciers act as... (read more)
2020-11-10 10:26:42

Haite van der Schaaf

Haite van der Schaaf studied Electrical Engineering at University of Twente. After his graduation Haite started developing instrumentation, software and systems with a strong focus on Mechatronics and Measurement & Control technologies. For 20 years Haite has held various positions at MARIN in the field of instrumentation development and project management. (read more)
2020-10-30 09:03:33

Introducing mAUV – MARIN’s Modular Autonomous Underwater Vehicle

Research Platform with Unique Six Degrees of Freedom Control Capabilities
Autonomous underwater vehicles are becoming more and more common in the maritime industry, and technology is rapidly developing for different applications, such as inspection, maintenance and surveillance. Meanwhile, more advanced autonomous capabilities are required, to be able to perform complex tasks and challenging missions. The Maritime Research Institute Netherlands (MARIN) has designed and built a modular Autonomous Underwater Vehicle (mAUV) for research projects in its model basins. The objective of this research effort is to expand the knowledge of vehicle control and to gain a better understanding of autonomous underwater operations. MARIN has a lot of previous experience with dynamic... (read more)
2020-10-30 08:56:05

State of the Art in Multibeam Echosounders

The Evolution of a Bathymetric Workhorse
Although the single beam echosounder is still in use, it has over the last 25 years gradually been replaced with new and less expensive multibeam echosounder (MBES) systems. And, although some side-scan sonar (SSS) systems also offer bathymetry, the MBES is the go-to system when it comes to bathymetry today. MBES technology has gone through an evolution rather than a revolution in recent years. In this article, we focus on the current state of the art for this bathymetric workhorse. The Multibeam Echosounder The main function of an MBES is to detect a number of depths along a swath of... (read more)
2020-10-30 08:32:19

What Is ‘Hydrospatial’?

In the last decades, we have progressed from ‘graphic’ to ‘digital’ and now to ‘spatial’. During the opening plenary session of the Canadian Hydrographic Conference (CHC) 2020, the author gave a presentation on ‘What is Hydrospatial?’, before inviting a panel of four senior figures and the audience to discuss the topic. This article is a summary of a detailed published Note in the International Hydrographic Review (IHR). What we do and its impact is obviously more important than a word can convey. However, words are how we express ourselves and, in particular, how we transmit our ideas and concepts to... (read more)
2020-10-27 10:37:56

Fugro Marinestar to Sponsor Hydrographic Data Acquisition & Processing Weeks

Fugro Marinestar, provider of a range of GNSS positioning services worldwide tailored for the dredging and marine construction, navy and hydrographic, wind farm and oceanographic research sectors, has become official sponsor of the Hydrographic Data Acquisition & Processing Weeks organized by Hydro International. The online event will consist of a dedicated web page, extra newsletters and the bumper-packed November-December issue of Hydro International, the global magazine for the hydrography industry. During the Hydrographic Data Acquisition & Processing Weeks (9 November – 21 December), which will be supported by an abundance of new articles, columns, Q&As, videos and other new content, the Hydro International community... (read more)
2020-10-21 02:59:09
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