We Visited for You

Oceanology International 2004
From 16-19 March, London’s new Exhibition Centre (ExCeL) was hosting the Oceanology International for the second time; offering ample, proficient and modern space in the Docklands, it saw a well organised show which attracted a record number of 7,000 participants, visitors and exhibitors. The conference committee was chaired by Prof Graham Shimmield (Director of the Scottish Association for Marine Science). He and his team did a great job in putting together a very interesting programme around the conference theme of ‘Strategies for Stewardship of our Oceans and Coastal Zone’. In his opening speech, MP Steven Timms, UK Minister for Energy,... (read more)
2008-01-01 01:00:00

AUV Sea Trials and Tribulations

36 months and 25,000 kilometres later- was it worth it?
In 1999, the oil companies BP, Amoco, and Shell jointly published a document detailing the industry requirement for a survey AUV (Autonomous Underwater Vehicle) that stated: "For industry to adopt these vehicles, survey AUVs must reduce costs or be at least comparable to conventional surveys". Taking this to heart, C & C Technologies financed the development of such a vehicle with only one condition: If it worked, industry would guarantee 100 days of AUV utilisation during the following two years. Likewise, if the development failed, industry would be under no obligation. BP agreed, so C & C placed an order... (read more)
2008-01-01 01:00:00

Acoustic Classification by Sonar

Disparate approach successful in cost-effective mapping
A breakthrough in signal conditioning has lead to significant improvements in single-beam and swath classification. With modern computers, this allows cost-effective bottom classification across multiple sonar platforms. The common dataset generated as a result of the highly successful shallow-survey conferences sponsored by the University of New Hampshire Ocean Mapping Group and the Defence Scientific and Technical Organisation of Australia is an ideal proving ground for classifying the same seabed using multiple platforms. The results of processing and classifying a common dataset are presented in this article. Acoustic seabed classification is in wide use for applications from habitat mapping to mine... (read more)
2008-01-01 01:00:00

Researchers Map Seafloor Near Pine Island Glacier

The Pine Island Glacier in Western Antarctica is not only one of the fastest-flowing ice streams in the Southern Hemisphere; over the past 11 years, four major icebergs have calved from its floating tongue. In February 2017, researchers on board the German research icebreaker 'Polarstern' successfully mapped an area of seafloor previously covered by shelf ice. A comparison of these new maps with satellite images of the ice stream reveals why the glacier suddenly retreated toward the coast: at important points, it had lost contact with the ground, as the experts report in 'The Cryosphere', an online journal of the European... (read more)
2018-06-26 10:18:48

RTK River Bathymetry in Africa

From Syledis and Tide Gauge to RTK GPS Water-level Corrected Survey
This article describes the installation of a hardware and software system for bathymetric surveys in the maritime part of the Congo River. The ‘Regie des Voies Maritimes’ (RVM) is a Congolese public administration in charge of an operational navigation river lane in the Congo maritime reach. The Congo River has the second lar­gest flow in the world and is 4,700km long. RVM maintains the conditions for commercial navigation in the so-called ‘maritime area’, from the mouth to Matadi harbour, over a distance of 150km. The estuary is the only maritime border of the Democratic Republic of the Congo (DRC), with... (read more)
2007-11-27 12:00:00

Synthetic Aperture Sonar Challenges

Synthetic aperture sonar (SAS) has been under active development for decades. The technique is particularly well suited for autonomous underwater vehicles, and it is expected that SAS will replace traditional side-scan sonars for many ‘high-end’ AUV applications in the years to come. Research systems have been used for more than 15 years and many R&D groups around the world have been able to present images that would not have been possible to produce using traditional sonars. However, in many cases, these impressive sonar images are the result of days of tuning and tweaking by experts. A lot of effort has... (read more)
2008-05-15 12:00:00

Air France Flight AF 447

A Challenge for Search and Recovery Technology
Air France flight 447, a scheduled passenger service from Rio de Janeiro (Brazil) to Paris (France), went missing on 1 June 2009 over the Atlantic Ocean with 228 people onboard. The aircraft took off from Galeão International Airport at 22:03 (UTC) on 31 May 2009 with an expected flight time of 11 hours. Contact was lost 4 hours into the flight. No distress calls were made. The recovery of aircraft parts and the ‘black-box’ recorders will be crucial to the investigation team – these tasks will challenge equipment, techniques and the ingenuity of the teams at sea.   Flight Reporting... (read more)
2009-06-26 12:00:00

Hydrographic Instrumentation Specialist

The University of Southern Mississippi is currently accepting applications for the position of Hydrographic Instrumentation Specialist. Special Instructions to Applicants Review of applicants begins immediately, and the position will remain open until filled. Be sure to include: 1) a cover letter detailing qualifications; 2) a current curriculum vitae and; 3) names and contact information for three references. Southern Miss is an R1 Carnegie Research University – high research activity and is the premier university in the Gulf South for marine science. The Division of Marine Science is located at the John C. Stennis Space Center, which is a “federal city”... (read more)
2019-09-05 02:26:01

Research Icebreaker Polarstern Begins Antarctic Survey Season

On 10 November 2018, the research icebreaker Polarstern left its homeport of Bremerhaven, bound for Cape Town, South Africa. This marks the beginning of her Antarctic season, in which oceanographic fieldwork in the Weddell Sea, a resupply mission to the Neumayer Station III, and explorations of the Larsen C ice shelf region and the South Shetland Islands are on the agenda. The ship is expected to return to Bremerhaven in June 2019. An expedition to the Larsen C ice shelf abutting the Antarctic Peninsula will be at the heart of the upcoming Antarctic season. The Peninsula is one of the fastest-warming... (read more)
2018-11-13 10:18:46

AUV and ROV Technology Plays Key Role in Historic Discovery

WWII Wreck Located in South Pacific
An underwater research and exploration vessel has played a key role in locating a major US aircraft carrier lost during World War Two. The R/V Petrel, owned and operated by philanthropist Paul Allen, discovered the remains of the USS Hornet on the seabed, 5,330 metres below the surface of the South Pacific Ocean near the Solomon Islands in late January 2019. This article looks more closely at the importance of underwater technology in enabling this historic find. The R/V Petrel is an expedition ship belonging to Vulcan Inc, a company founded by explorer and philanthropist Paul G. Allen, co-founder of Microsoft... (read more)
2019-03-05 10:22:21
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