ocean monitoring Articles

  • A Sound Projector for Acoustic Tomography and Global Ocean Monitoring

    Abstract—Long-range underwater acoustic systems, such as those used in ocean acoustic tomography, require low-frequency signals covering a broad frequency band. To meet this requirement, a novel design based on of a tunable narrow-band high-efficiency sound projector has been exploited. The projector transmits a frequency sweep signal by mechanically tuning a resonator tube (or organ pipe) ...

  • Why Pacific islands should take on ocean monitoring

    Pacific islands must build capacity for their own environmental monitoring to tackle both local and global problems, says Ben Ponia. Small island developing states are viewed as the early-warning canary for global environmental change. But though they share global problems, many have an eye for economic growth and have become industrialised nations facing their own suite of home-grown ...


    By SciDev.Net

  • Managing oceans with sound science

    Management of marine resources for sustainable development needs local capacity for science, particularly in the Pacific region. Those who care about environmental damage and its effects on the health and welfare of communities tend to focus on land-based threats. That is where harm can be most easily observed, and where its causes — from agricultural pesticides to industrial air ...


    By SciDev.Net

  • 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 ...

  • Will Rio+20 commit to protecting the oceans?

    Promises made at previous summits have not delivered enough protection for the oceans — campaigners are pushing for better results from Rio+20, writes Prime Sarmiento. This month, scientists, campaigners and many developing nations are optimistic they will set in motion a deal on the conservation of the high seas at ...


    By SciDev.Net

  • Shellfisheries: Time to prepare for ocean acidification

    Both physical and social factors must be considered as coastal communities brace for an uncertain future. Oceans are gradually becoming warmer and more acidic as more carbon dioxide enters the atmosphere — two shifts that are altering the economic foundations of many coastal regions. In a ...


    By Ensia

  • Ocean science for sustainable development: Facts and figures

    Sarah Grimes explores why we need good ocean monitoring, how to get it, and why it still fails Small Island Developing States. Oceans are a critically important component of the Earth system, supporting ecosystem and human health. They regulate the weather and climate; are essential for producing freshwater; and soak up ...


    By SciDev.Net

  • 2014 JRC Ocean Energy Status Report

    Abstract Oceans and seas have the potential to play a significant role in providing clean energy. Different technologies are currently being developed to ensure a long term contribution of ocean energy to the future energy system. Among the different ocean energy technologies, tidal and wave conversion systems are expected to contribute the most to the European energy system in the short ...

  • Is pH a red herring when it comes to ocean acidification?

    New research points to saturation state, not pH, as the most pressing metric to track when it comes to shellfish survival. In 2007, the owners of Whiskey Creek oyster hatchery on the Oregon coast lost almost all of their larvae — and had no idea why. The only clue was that the larval die-offs often occurred during intense upwelling events, when ...


    By Ensia

  • Ocean Power connects wave energy system to grid

    Ocean Power Technologies, Inc. (Pennington, NJ) announced that it has achieved what it claims to be the first-ever connection of a wave-energy system to the power grid in the United States. Ocean Power’s PB40 Powerbuoy system is now delivering power to the grid at the U.S. Marine Corps Base Hawaii on the island of Oahu. The Powerbuoy unit, which was installed in December 2009 at a ...

  • Time to stop losing ocean data to vandalism

    More must be done to prevent damage of ocean data buoys that costs money, vital data — and lives, say Sidney Thurston and M. Ravichandran. The global community relies on a rapidly expanding ocean observing network to understand the climate and ecosystems, to help warn against ocean-borne hazards such as tsunamis and storm surges caused by cyclones, and to support sea rescue ...


    By SciDev.Net

  • Surface Ocean Acidification studies using Ships Of Opportunity

    Ships of Opportunity Ships of opportunity (SOOP) are used as a platform for cost-efficient collection of environmental data, Ferrybox. The SOOP network operated by NIVA cover the majority of the Norwegian coastline (from Germany (54N ) in the South to Svalbard (78N) in the North. This network is used in the national OA monitoring program. Globally, SOOPs are used for pCO2 measurements and ...


    By Franatech GmbH

  • Lead from gasoline discovered in Indian Ocean

    Levels began to climb in the 1970s, peaking a decade ago — a timeline consistent with the region’s pattern of leaded gasoline use. Written by Jennifer Chu, MIT News Office.You can read the original new in MIT NewsSince the 1970s, leaded gasoline has been slowly phased out ...

  • Environmental monitoring of two fish waste ocean disposal sites in Newfoundland and Labrador, Canada

    Sediment contaminant and benthic community surveys were conducted at two fish waste ocean disposal sites in Newfoundland and Labrador, Canada, to assess the environmental impacts of the disposal activities. Despite a dispersive ocean environment, fish wastes accumulated at both sites, initially disturbing the benthic community through organic enrichment and oxygen depletion, but causing no ...


    By Inderscience Publishers

  • Overview of Infrastructure Asset Management A View from Both Sides of the Atlantic Ocean

    AbstractEurope and the United Kingdom (UK) are at the forefront of Asset Management for water utilities. This is primarily due to the fact of privatization of water utilities in the UK. The UK is currently in the third generation of the Asset Management procedures and has well defined methods for identifying and managing assets. In the United Kingdom (UK), large scale Asset Management has been ...

  • The number one thing we can do to protect Earth’s oceans

    Marine governance favors consumption and commerce over conservation. Here's what we can do about it. When New England fishers complained of working harder and harder to catch fewer and fewer fish, Spencer Baird assembled a scientific team to investigate. Though a fishery failure would once have seemed inconceivable, Baird wrote in his report, “an alarming decrease of the ...


    By Ensia

  • Ocean outfall plume characterization using an autonomous underwater vehicle

    A monitoring mission to map and characterize the Point Loma Ocean Outfall (PLOO) wastewater plume using an Autonomous Underwater Vehicle (AUV) was performed on 3 March 2011. The mobility of an AUV provides a significant advantage in surveying discharge plumes over traditional cast-based methods, and when combined with optical and oceanographic sensors, provides a capability for both detecting ...


    By IWA Publishing

  • Measuring carbon dioxide (CO2) along ocean surfaces case study

    Customer: Confidential Application: A research team needed to study the levels and variations of one of the major greenhouse gases, carbon dioxide (CO2) along the ocean surfaces. The research team required CO2 analysers to be installed in commercial ocean liners to monitor the “dry” level of ...


    By Ecotech Pty Ltd

  • Climate monitoring - meeting the challenge

    Average global temperatures are on the increase, ice and snow cover is disappearing fast and sea levels are rising. In addition, severe weather situations are becoming more frequent and more extreme. There is clear evidence that the Earth’s atmosphere and oceans are warming: 11 of the 12 years in the period 1995-2006 were among the 12 warmest since 1850. Climate change is a reality and it is ...

  • Organics Monitoring: A Practical Guide

    Preventing product loss, lowering waste treatment costs, and reducing system maintenance and energy consumption through organics monitoring in the chemical, refining, food, and wastewater treatment industries. Summary Process water and steam condensate contamination includes organic, inorganic, and biological components. Sources of organic contamination include process ...


    By GE Analytical Instruments

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