ocean current meter Articles

  • Ocean carbon: A dent in the iron hypothesis

    Oceanographers Jim Bishop and Todd Wood of the U.S. Department of Energy’s Lawrence Berkeley National Laboratory have measured the fate of carbon particles originating in plankton blooms in the Southern Ocean, using data that deep-diving Carbon Explorer floats collected around the clock for well over a year. Their study reveals that most of the carbon from lush plankton blooms never reaches the ...

  • What will it take to get plastics out of the ocean?

    From drones to filters to artificial islands, innovators are working to reduce the threat thousands of tons of trash pose to marine ecosystems. A few palm trees stand strong in the salty breeze. Located on the southern tip of the Pacific island chain of Hawaii, Kamilo Beach is an isolated stretch of black volcanic shoreline in the middle of nowhere. Just a few hundred yards ...


    By Ensia

  • Coupled ADCPs can yield complete Reynolds stress tensor profiles in geophysical surface flows

    We introduce a new technique to measure profiles of each term in the Reynolds stress tensor using coupled acoustic Doppler current profilers (ADCPs). The technique is based on the variance method which is extended to the case with eight acoustic beams. Methods to analyze turbulence from a single ADCP rely on questionable assumptions on turbulence anisotropy ratios and on the requirement of ...


    By Teledyne RD Instruments

  • New monitoring technology helps reveal Arctic secrets

    A group of Arctic researchers has employed the latest monitoring technology to investigate the effects of climate change, by measuring temperature and salinity in the water column beneath surface ice. The results of the investigation, which utilised YSI’s new 'Castaway-CTD', could cast new light on our understanding of the ways in which shifting ocean currents impact upon the climate in ...

  • BA150 dewatering pumps at Panama Canal case study

    The Panama Canal is a 77.1-kilometre (48 mi) canal that connects the Atlantic Ocean (via the Caribbean Sea) to the Pacific Ocean. The canal cuts across the Isthmus of Panama and is a key conduit for international maritime trade. The size of the lock chambers at either end of the canal, the depth of the water in the canal and the height of the “Bridge of the Americas” actually ...


    By BBA Pumps

  • Versatility is the key with the Blue-White hybrid ultra-sonic flowmeter, “sonic-pro”, at the Key West WWTP

    The Florida Keys have long been known for its exotic islands, pristine snorkeling, artistic charm, and a magnificent coral reef. This natural beauty attracts millions of tourists every year. Needless to say, maintaining the quality of the sea water surrounding the keys is essential to the allure and economic viability of the area. The Key West Southernmost Wastewater Treatment Plant was ...


  • Where Has All the Ice Gone?

    As the earth warms, glaciers and ice sheets are melting and seas are rising. Over the last century, the global average sea level rose by 17 centimeters (7 inches). This century, as waters warm and ice continues to melt, seas are projected to rise nearly 2 meters (6 feet), inundating coastal cities worldwide, such as New York, London, and Cairo. Melting sea ice, ice sheets, and mountain glaciers ...


    By Earth Policy Institute

  • Eco-economy indicator: past decade the hottest on record

    The first decade of the twenty-first century was the hottest since recordkeeping began in 1880. With an average global temperature of 14.52 degrees Celsius (58.1 degrees Fahrenheit), this decade was 0.2 degrees Celsius (0.36 degrees Fahrenheit) warmer than any previous decade. The year 2005 was the hottest on record, while 2007 and 2009 tied for second hottest. In fact, 9 of the 10 warmest years ...


    By Earth Policy Institute

  • Failing Brine Piping Replaced at World`s Largest Ion Exchange Membrane Plant

    Fabricated Plastics Limited is headquartered in Maple, Ontario, located on the northern outskirts of Toronto. One of North America's largest custom composite and dual laminate fabrication companies. Fabricated Plastics is dynamic, energetic, creative and resourceful. Engineering design, problem solving and fabrication are world class with the result that Fabricated Plastics is frequently invited ...


    By Fabricated Plastics Limited

  • Overview of seawater desalination status and challenges

    Introduction World oceans contain over 97.2% of the planet’s water resources. Because of the high salinity of ocean water and the significant costs associated with seawater desalination most of the global water supply has traditionally come from fresh water sources – groundwater aquifers, rivers and lakes. Today, however, changing climate patterns combined with population ...


    By IWA Publishing

  • Emergency Relief Work, Aceh Experience, Indonesia - 2004 Tsunami

    ABSTRACTThis paper reflects on the experiences of the author assisting in the international efforts in providing for the survivors of the 2004 Boxing Day earthquake and tsunami, in Aceh Province, Indonesia. It describes that event and the challenges faced after such a devastating event in a country already suffering due to a civil war. The paper highlights the success of prioritising the sourcing ...

  • UV Ballast Water Treatment Close to US Approval

    Shipowners have found it increasingly difficult to comply with ballast water treatment regulations in the US. But there’s good news on the horizon thanks to DESMI’s newest UV-based solution Ultraviolet radiation (UV), which counters microorganisms by rendering them unable to reproduce, is the preferred method for today’s ballast water treatment systems. This robust and reliable ...


    By DESMI A/S

  • Can saltwater quench our growing thirst?

    An increasingly water-stressed world takes a new look at desalination. It seems simple enough: Take the salt out of water so it’s drinkable. But it’s far more complex than it appears at first glance. It’s also increasingly crucial in a world where freshwater resources are progressively strained by population growth, development, droughts, ...


    By Ensia

  • New report connects 2012 extreme weather events to human-caused climate change

    As extreme weather events like wildfires, heat waves, downpours, and droughts continue to make headlines in the United States and around the world, many have wondered what their connection is to climate change. A new report sheds some light, firmly drawing correlations between several extreme weather events in ...

  • The Otay Mesa Trunk Sewer: helping development in southern San Diego County

    Untitled Document The City of San ...


    By Innovyze

  • Sea Level Rise: Risk and Resilience in Coastal Cities

    Introduction One of the most dire impacts of anthropogenic climate change is a rise in the global sea level caused by the melting of glaciers and land-based ice caps, as well as a smaller increase from expansion due to the higher temperature of the water itself.  Unlike some other predicted effects of climate change, this impact has already been observed for some time.  Indeed, ...


    By Climate Institute

  • Usen

    “Oil is not only an important sector of our industry but also a symbol of the independence of our country, of the hope for a better future”. These were the words of President Nursultan Nasarbayev in September 1999, commemorating the 100th anniversary of the formation of the oil and gas industry. The oil industry in Kazakhstan has existed for more than 100 years, however a significant boom in this ...


    By Flottweg SE

  • A warming world means more destructive storms

    Elevated global temperatures bring a number of threats, including rising seas and more crop-withering heat waves. Higher surface water temperatures in the tropical oceans also provide more energy to drive tropical storm systems, leading to more-destructive hurricanes and typhoons. The combination of rising seas, more powerful storms, and stronger storm surges can be devastating. Just how ...


    By Earth Policy Institute

  • The natural way to clean wastewater

    John Todd founded Ocean Arks International in the 1980s, where he started to experiment with processes that mimic natural ways to purify wastewater. He built a greenhouse and ran sewage through a series of tanks, with plants suspended in the flowing waters, and constructed marshes made of sand and gravel. No chemicals were added, but plenty of aquatic creatures from snails to small fish were ...


    By BioCycle Magazine

  • Advanced Water Quality Techniques Course

    Abstract:The development of a strategic water quality monitoring program is based on prioritizing risks to public safety and economic reality. The development of global standardized methods and protocols for automated water quality monitoring would facilitate international communication of water quality information and comparison of standardized methods and protocols. The three primary methods ...


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