Improving Overall Resolution of Bathymetric Survey

Integrated Use of Multi-beam Echo Sounder and Towed Interferometric Sonar
Designing offshore engineering facilities requires large amounts of information. To acquire it, suites of engineering and geophysical surveys are run, which as a rule include such techniques of seabed and sub-bottom investigation as seismic profiling, acoustic, magnetic and bathymetric surveys. Obtaining accurate and detailed seabed bathymetry is extremely important because the quality of other surveys depends on the quality of the bathymetry. One of the most accurate and cost-effective ways to acquire high-resolution bathymetric data is the use of shipborne bathymetric systems such as multi-beam echo sounders (MBES) or interferometers. The drawback of this method is that the resolution of... (read more)
2012-04-19 03:50:13

Exploring Coral Reef Sustainability

The Island of Bonaire in the Southwest Caribbean, a Marine Protected Area since 1979, has one of the most pristine coral reefs in the region. The last synoptic survey of the leeward coast was by the Dutch scientist Dr Fleur van Duyl in the 1980s and parts of the deeper reef have never been mapped. In January 2008, the US National Oceanic and Atmospheric Administration (NOAA) funded a unique expedition to Bonaire, deploying three compact Autonomous Underwater Vehicles (AUVs) carrying various oceanographic instrumentation packages and a swath bathymetry sonar.<p> The crystal-clear watersand schools of reef fish made an enchanting setting... (read more)
2008-08-27 12:00:00

Remarkable Achievements

International Oceanographic Commission Celebrates 50th Anniversary
The International Oceanographic Commission (IOC) turns 50 this year. Since the UNESCO Commission was established in 1960 the IOC has made some remarkable achievements with relatively small resources. IOC is successful in finding effective ways of co-operation with sister organisations, says Wendy Watson-Wright, executive secretary since last January. Ms. Watson-Wright, you took over as IOC Executive Secretary on 4 January 2010. Can you tell us a little bit about your background and why you decided to apply for this prestigious post?I spent 21 years in the federal public service of Canada, 19 of which were spent in Fisheries and Oceans... (read more)
2010-05-31 10:26:44

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

'Check and double check your data before getting somebody else to check it for you’

7 Questions to Phil Payne, Survey Delivery Manager, UK Hydrographic Office
Phil Payne, survey delivery manager of the UK Hydrographic Office talks about hydrographic programmes to support blue economic growth, intentional projects and the use of lidar for charting purposes. "There will be a continued drive towards autonomy and automated processing.” Phil Payne, survey delivery manager of the UK Hydrographic Office talks about hydrographic programmes to support blue economic growth, intentional projects and the use of lidar for charting purposes. ”There will be a continued drive towards autonomy and automated processing.” Prior to his work with the UK Hydrographic Office (UKHO), Phil Payne spent 25 years in the Royal Navy as a hydrographic and meteorology specialist. Since joining the UKHO in 2016, he has worked in a number of different roles, most recently as its Survey Delivery Manager - a role he has held since 2017. Surveys Around the World As... (read more)
2019-12-17 11:40:56

Preparing the European Fleet of Research Vessels for the Future

Greater Use of Autonomy Will Influence the Numbers of Personnel Required on Board
Recently, the European Marine Board published a report on the current status of the European fleet of research vessels. This Position Paper describes how the fleet will need to develop in the future to ensure that it will continue to provide the same high level of support to science and hydrography globally, as well as highlighting ways in which management could be made more efficient. This article is an extract of the report. Recently, the European Marine Board published a report on the current status of the European fleet of research vessels. This position paper describes how the fleet will need to develop in the future to ensure that it will continue to provide the same high level of support to science and hydrography globally, as well as highlighting ways in which management could be made more efficient. This article is an extract of the report. Many of the global challenges facing the world today – climate change, food and water security, health and well-being, sea-level rise and economic development – are driving... (read more)
2020-04-06 12:17:06

Danish Hydrographic Office Turns to GIS for Automated Maritime Charting

A Radical Update Was Needed
Denmark has challenging seascapes to map and chart. It has a rich history of nautical charting that dates back to the seventeenth century, and many of its navigational products for Greenland were created in the 1960s. When GPS started to gain prominence, a radical update was needed. Apart from its 42-mile land border with Germany, the peninsular country of Denmark, with its scores of bays, straits, and fjords,  is surrounded almost entirely by the North and Baltic Seas. Denmark is also composed of more than 400 islands, including the Faroe Islands, located in the Atlantic Ocean between the United Kingdom... (read more)
2019-12-19 02:23:42

WiMUST – A Fleet of AUVs for Seismic Surveys

EU-funded WiMust Project Advances a Novel Appraoch to Existing Methods
The ongoing WiMUST (Widely scalable Mobile Underwater Sonar Technology) project aims to design and test a system of cooperating autonomous underwater vehicles (AUVs) that would simplify seismic surveying and offer significant advantages over modern streamer-towing operations. Seismic surveys are a crucial part of offshore exploration, producing detailed imagery of sub-bottom rock formations that enables the location and evaluation of oil and gas deposits. Other commercial, scientific and military uses include assessments of the seabed for offshore construction, installations of renewable energy infrastructure, academic studies of the geology, civil engineering projects in shallow coastal zones, etc. Traditionally, seismic acoustic surveys are... (read more)
2017-05-12 11:40:52

3D Precision Beyond the Horizon

Gemini Offshore Wind Farm
The Gemini Offshore Wind Farm in the North Sea is located 85km north of Groningen, The Netherlands. Van Oord, a leading Dredging and Marine Contractor, started the offshore construction work in January 2015. Gemini consists of two separate areas called ‘ZeeEnergie’ and ‘BuitenGaats’, both with 75 4MW Siemens turbines. Gemini will be the 2nd largest offshore wind farm in the world upon completion in 2016, providing power to 785,000 households, equivalent to 1,500,000 people. Gemini is privately owned by Northland Power (60%), Siemens (20 %), Van Oord (10%) and HVC (10%), and with costs expected to be EUR2.8 billion, Gemini... (read more)
2016-02-01 03:20:40

2D/3D Web-mapping

Web Visualisation Coastal Orthophotos
This paper describes the development of a web spatial image server used for sharing huge sets of georeferenced coastal orthophotos on the web via an easy visualisation interface. Traditional cartography was considered a highly sophisticated methodology for the production of high-quality maps, using the sales-business model of the non-internet economy and dedicated to specialists. The recent arrival on the scene of three internet leaders whose general mission is to map everything, and the release of their popular online earth browsers has had a huge impact in the geomatics arena. All are by now familiar with the success enjoyed by Google... (read more)
2007-03-02 12:00:00
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