Side-scan Sonar Training for Law Enforcement

Black Laser Learning has opened the registration for their live, two-day side-scan sonar training seminar for law enforcement personnel scheduled for January 2012. Open to law enforcement and marine rescue personnel, the event is being organised in cooperation with the Lowndes County Sherriff's office and will be held at Valdosta, Lowndes County, Georgia, USA, on 11th and 12th January 2012.   Participants can expect day one of the event to be spent in the classroom, learning the principles of sonar operations, with  laymen's explanations of procedures and example sonar images. Day two will consist of hands-on training on the water... (read more)
2011-10-24 11:28:30

Land-Sea Integrated Reference Data for the North Sea

SeaZone is collaborating with hydrographic offices and other organisations from Norway, Denmark, Germany, Belgium, Sweden and United Kingdom on a 3 year European funded project to improve marine reference information for the North Sea. The title of the project - ‘Bringing Land and Sea Together (BLAST)' - aptly describes the project's main aim, that is to harmonise and integrate terrestrial and marine geographic datasets to create a consistent reference base suitable for integrated coastal zone management (ICZM) and other purposes. BLAST has a transnational challenge to incorporate maritime information from the sea areas of the different countries making up the... (read more)
2010-02-16 05:07:25

ALB Effectiveness in the Aegean Sea

Function of Water Clarity
An Airborne Lidar Bathymetry (ALB) system has to cope with a number of limitations. Weather conditions (rainfall, humidity and sea state), together with bottom conditions (slope of the seabed, material type, roughness and density) are of great importance. However, the factor that dominates is water clarity. The attenuation of a beam of light by water results from two independent mechanisms; scattering and absorption. Therefore, turbidity, which is controlled by rivers’ runoffs and winds, wind/wave induced sediment re-suspension, the intensity of coastal human activity, the tidal amplitude and the structure of the water column itself, have the potential to significantly influence... (read more)
2015-05-29 11:20:24

Underwater Noise Monitoring in the North Sea

Jomopans Project to Monitor Continuous Sound
Sound is of vital importance for marine animals. Eleven institutes from the countries bordering the North Sea have joined forces in the Jomopans project to implement a novel monitoring strategy for underwater sound. Due to the growth of human activities in the sea, sound pollution is a growing concern for marine environmental managers. High levels of anthropogenic noise disturb animals, but the integrated impact of noise on the marine ecosystem is largely unknown. In the Joint Monitoring Programme of Ambient Noise in the North Sea (Jomopans) project, measurements at sea are combined with noise maps from numerical modeling to assess the quantitative levels of sound at sea. Sound is of vital importance for marine animals. Eleven institutes from the countries bordering the North Sea have joined forces in the Jomopans project to implement a novel monitoring strategy for underwater sound. Due to the growth of human activities in the sea, sound pollution is a growing concern for marine environmental managers. High levels of anthropogenic noise disturb animals, but the integrated impact of noise on the marine ecosystem is largely unknown. In the Joint Monitoring Programme of Ambient Noise in the North Sea (Jomopans) project, measurements at sea are combined with noise maps from numerical modeling to assess... (read more)
2019-06-18 04:01:43

Proactive Dredging in the Dutch Wadden Sea

Morphological Monitoring and Forecasting through Development of a Maintenance Management System
The navigation channels in the Dutch Wadden Sea require continuous maintenance due to unceasing sedimentation of sand and mud. This article describes the data management workflow and adopted technologies for a maintenance management system (MMS) used for morphological monitoring and forecasting of the various navigation channels. In 2016, the Dutch Department of Waterways and Public Works awarded a multiannual contract to contractor Gebroeders van der Lee to maintain the navigable waterways and harbours in the Dutch Wadden Sea, where HKV Consultants supports the development, operation and maintenance of this MMS. The challenge of working in these conditions is to find... (read more)
2018-05-22 11:06:18

Fast-moving Waterfalls in the Deep Sea

New research led by the National Oceanography Centre (NOC) has discovered how fast-moving waterfalls under the sea control the shape and behaviour of submarine channels. These underwater channels are the offshore equivalents of rivers, but can be much larger. Submarine channels can extend for tens to thousands of kilometres offshore, providing an important conduit for the transfer of sediment, nutrients and pollutants, such as microplastics, to the deep sea. Avalanches of sediment that flow down these channels also pose a hazard to networks of seafloor cables that underpin global communications, including the internet. An international research team, including NOC, the... (read more)
2020-06-19 08:49:37

The Global Sea Level Observing System

The Global Sea Level Observing System (GLOSS) is an international programme, established in 1985 by the Intergovernmental Oceanographic Commission (IOC) of UNESCO to provide oversight and co-ordination for global and regional sea level networks in support of international climate, oceanographic and coastal sea level research. GLOSS is co-ordinated by the IOC and is now one of the main observing components under the World Meteorological Organization (WMO)/IOC Joint Technical Commission of Oceanography and Marine Meteorology (JCOMM).<P> The GLOSS programme seeksto increase the number of oper­ational tide gauge stations reporting to the Permanent Service for Mean Sea Level (PSMSL) hosted at the... (read more)
2008-05-15 12:00:00

Large Glider Experiment in the Sardinian Sea

The REP14-MED sea trial includes 21 partners from six nations. From 6 to 26 June 2014, onboard NRV Alliance and German vessel Planet, and at research centres ashore, experts from those institutions are working on the future of ocean monitoring and seabed characterisation. The Sardinian Sea will be the site of the REP14-MED experiment, lead by the NATO Centre for Maritime Research and Experimentation (CMRE), part of the NATO Science and Technology Organization. Onboard the NATO Research Vessel Alliance, operated by CMRE, and onboard Research Vessel Planet, operated by the German Research Centre WTD71, as well as remotely at research centres... (read more)
2014-06-16 10:24:41

Watch the Arctic’s Sea Ice Slowly Disappear

Video Included
According to new research, the Arctic’s oldest and thickest ice is more mobile than ice in the rest of the Arctic and is vanishing twice as fast. Researchers have identified what they’re calling the last ice area, a 2,000-kilometre stretch of ocean northwest of Greenland where the Arctic’s summertime sea ice might survive for a few more decades. As reported in Geophysical Research Letters, a biweekly peer-reviewed scientific journal of geoscience published by the American Geophysical Union, sea ice coverage in the Arctic Ocean has declined, on average, by more than one-third from 1984 through 2018. Only in two portions of... (read more)
2019-11-14 09:25:56

Underwater Heritage in the North Sea

As a partner in the IWT marine archaeology project SeArch, the Flanders Marine Institute (VLIZ) has developed a website for the project that will guide visitors through the research and legislation of cultural heritage items, including with a timeline and maps of the heritage sites. It is little known to people that there are traces of heritage to be found in the sea and that this maritime heritage is making up an important part of our cultural heritage. However, this marine heritage is under increasing pressure by commercial activities at sea, such as sand and gravel extraction, dredging, the construction... (read more)
2014-02-18 12:01:00
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