Sea Technology

NOV 2016

The industry's recognized authority for design, engineering and application of equipment and services in the global ocean community

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56 st / November 2016 www.sea-technology.com ABS Updates Ballast Water Treatment Guide ABS has updated its "Guide for Ballast Water Treatment" at www.ea gle.org to support industry in the de- sign and installation of ballast water management solutions that meet both regulatory and operational require- ments. The update comes as industry is addressing the technical challenges brought about by the recently ratified International Maritime Organization (IMO) Ballast Water Management Convention. The IMO requirements for ballast water management enter into force September 8, 2017. Central to these changes is the requirement that ves- sels use approved ballast water man- agement systems. Ocean Acidification Leads To Reef Zooplankton Loss Tropical coral reefs lose up to two- thirds of their zooplankton through ocean acidification, according to a German-Australian research team that examined two reefs with carbon dioxide seeps off the coast of Papua New Guinea, where volcanic carbon dioxide escapes from the seabed, lowering the water's acidity to a level that scientists predict for the future of the oceans. The researchers believe that the decline in zooplankton is due to the loss of suitable hiding places, result- ing from the changes in the coral reef community due to increasing acidifi- cation. Instead of densely branched branching corals, robust mounding species of hard coral grow, offering the zooplankton little shelter. The impact on the food web of the coral reefs is far-reaching because these mi- cro-organisms are an important food source for fish and coral. CODAR to Help Refine US Tsunami Warnings CODAR Ocean Sensors Ltd. is under contracted partnership to re- fine SeaSonde HF radar outputs that will provide useful warnings of ap- proaching tsunamis off U.S. coasts. Directed from the Tsunami Warning Center (TWC) in Palmer, Alaska, and co-sponsored by NOAA/National Weather Service Tsunami Program Office's Tsunami Research Advisory Council and NOAA/NOS U.S. IOOS, the aim is to optimize detection while reducing false alarms. CODAR's q- factor detection algorithm will be in- stalled and run in in real time on four SeaSondes operating in New Jersey, correlating false alarms with external influencers such as background cur- rents, radio interference and noise. Near-real-time ASCII files of q- factor spikes from the four radars will be sent to TWC in Palmer to allow feedback from TWC to improve CO- DAR algorithm and NOAA decision thresholding and permit site-specific performance assessment. Toxins Take to Warm Ocean A new study connects the un- precedented West Coast toxic algal bloom of 2015 that closed fisheries from southern California to northern British Columbia to the unusually warm ocean conditions, nicknamed environmental monitoring S EA T ECHNOLOGY REPRINTS ® Sea Technology magazine Since 1963, Sea Technology has been the industry's recognized authority in providing information in design, engineering and application of equipment and services in the global ocean community. Let Sea Technology work for you by providing published editorial content to validate your marketing initiatives. For additional information, please contact: Compass Publications, Inc. T 703.524.3136 F 703.841.0852 seatechads@sea-technology.com sea-technology.com Electronic Reprints Digital versions of ST articles in high-resolution PDF format can be posted directly on your company's website. Hard Copy Reprints Include high-quality glossy reprints in your kits, and/or distribute them at conferences, seminars, and trade shows. Enhance your direct mail.

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