Ocean Monitoring Articles

  • Arctic Polar Research - A Global Responsibility

    Due to climate change and geopolitical trends, the Polar Regions (particularly the Arctic) are increasingly becoming the focus of scientific, political, and economic interests. Much of the global climate is driven by forces that originate in the Arctic. The Arctic sea ice is receding faster than climate models have predicted, and the movement of freshwater into and around the Arctic plays an ...

  • Tech Tip: Deploying Sea-Bird CTD in Ice

    Large numbers of Sea-Bird conductivity instruments have been used in Arctic and Antarctic programs. Special accommodation to keep temperature, conductivity, oxygen, and optical sensors at or above 0° C is advised. Often, the CTD is brought inside protective doors between casts to achieve this. Conductivity Cell When freezing is possible, we ...

  • Scientists, a new quota species?

    Globally, marine conservation is high on the agenda. The need to protect and conserve species and habitats from deleterious anthropogenic impacts has never been of more concern than it is currently. However, that is not to say we, as a society, are achieving effective marine conservation, in fact we are far from it. Global summits have come and gone, as have the targets they set for marine ...

  • Views from Inside Pearl Harbor’s USS Arizona

    Deep Trekker ROVs Provide Survivor First Live View Inside USS Arizona This year marks the seventy-fifth anniversary of Pearl Harbor and the sinking of the USS Arizona. Unlike most other ships that were bombed on that fateful day, the steel battleship suffered so much damage that it was never salvaged. The final resting place of over 900 souls, the ship has remained submerged in a shallow ...


    By Deep Trekker Inc.

  • 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

  • Widespread Plastic Pollution Found in Great Lakes Tributaries

    Tiny pieces of harmful plastic, called microplastics, are prevalent in many rivers that flow into the Great Lakes, according to a study published today in the journal Environmental Science & Technology. Results are also illustrated on a new USGS microplastics website. Microplastics ...

  • E-guide for Measuring TAN and TBN in Oil

    Monitoring TAN and TBN is an important test for measuring lubricant condition. There are several methods available ranging from expensive laboratory methods to quick field tests. In a laboratory setting, methods are chosen based on the highest accuracy and repeatability that can be achieved with a decent throughput. Out in the field, it is most important to get a trustworthy result quickly enough ...


    By Spectro Scientific

  • Four Methods to Measure TAN/TBN in Lubrication Oil

    TOTAL ACID NUMBER A high concentration of acidic compounds in a lubricant can lead to corrosion of machine parts and clogged oil filters due to the formation ...


    By Spectro Scientific

  • Case Study - Lacustrine: Underwater Resistivity Surveys

    Lake Travis – Austin, Texas Objective:  Locate buried pipeline and map the limestone bedrock surface Site:  Lake Travis, near Austin, Texas USA during the AGI Marine Resistivity Seminar Date:  May 1, 2014 and May 7, 2015 Instrument:  SuperStingR8 WiFi, SwitchBox56, underwater marine cable with 28 electrodes spaced at 6m. ...


    By Advanced Geosciences, Inc.

  • Case Study - Springs: Limestone Fractures - Comal Springs, Texas

    Title: 3D Imaging of Karst Fractures at Comal Springs, Texas, USA Organization: University of Texas at Austin and The Edwards Aquifer Authority Date collected: March 2015 Location: Comal Springs, Texas, USA Instrument: SuperSting Wi-Fi, 28 electrode AGI Passive Graphite Electrode Marine Cable Electrode Spacing: 1 meter Array: Dipole-Dipole Number of Electrodes: ...


    By Advanced Geosciences, Inc.

  • World Oceans Day

    A healthy world ocean is critical to our survival. This is the message that World Oceans Day is trying to remind people of. Oceans are vital to our planet. According to the World Oceans Day website, they are important because: They produce most of the oxygen we breathe They ...


    By AQUAREAD Limited

  • 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

  • Three ways artificial intelligence is helping to save the world

    As computers get smarter, scientists look at new ways to enlist them in environmental protection. When you think of artificial intelligence, the first image that likely comes to mind is one of sentient robots that walk, talk and emote like humans. But there’s a different kind of AI that’s becoming prevalent in nearly all of the sciences. It’s known as machine ...


    By Ensia

  • Assessment of marine ecosystem services indicators: Experiences and lessons learned from 14 European case studies

    This paper shares the experiences, observations and discussions that occurred during the completing of an ecosystem services' (ES) indicator framework to be used at European Union and Member States' level. The experience base was drawn from three European research projects and 14 associated case study sites that include 13 transitional‐water bodies (specifically 8 coastal lagoons, 4 riverine ...


    By John Wiley & Sons, Ltd.

  • Selected pharmaceuticals entering an estuary: Concentrations, temporal trends, partitioning, and fluxes

    In many coastal watersheds and ecosystems, rivers discharging to estuaries receive waters from domestic wastewater treatment plants resulting in the release and distribution of pharmaceuticals to the marine environment. In the present study, 15 active pharmaceutical ingredients (APIs) were measured regularly over 1 year in the dissolved and particulate phases as they entered Narragansett Bay ...


    By John Wiley & Sons, Ltd.

  • The marine environment and ballast water management law

    This article contains a study of international and national measures dealing with the potential threat of pollution and the introduction of alien species that may come from the discharge of improperly treated ballast water. Ballast water management policy, law and coastal biosecurity strategies are considered. There are challenges to achieving the ideals of ballast water laws, as correctly ...


    By IWA Publishing

  • Application of hybrid Kalman filter for improving water level forecast

    Numerical modeling is one of the popular means to simulate and forecast the state of oceanographic systems. However, it still suffers from some limitations, e.g., parameter uncertainties, simplification of model assumptions, and absence of data for proper boundary and initial conditions. This paper proposes a hybrid data assimilation scheme, which combines the Kalman filter (KF) with a ...


    By IWA Publishing

  • 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

  • A chronic toxicity test for the tropical marine snail Nassarius dorsatus to assess the toxicity of copper, aluminium, gallium and molybdenum

    Chronic toxicity test methods for assessing the toxicity of contaminants to tropical marine organisms are generally lacking. A 96‐h chronic growth rate toxicity test was developed for the larval stage of the tropical dogwhelk, Nassarius dorsatus. Growth rates of N. dorsatus larvae were assessed following exposures to copper (Cu), aluminium (Al), gallium (Ga) and molybdenum (Mo). Exposure to Cu ...


    By John Wiley & Sons, Ltd.

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