Sea Technology

AUG 2017

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www.sea-technology.com August 2017 / st 59 Get your next salvage job done faster - Detects all iron and steel targets - 1,500+ foot detection range - Used to find pipelines, anchors & chains - Locates buried objects not found with sonar - Commercial construction - Both audio & visual alarms - Computer display of mag data and position with a JW Fishers Proton 4 Magnetometer. JW Fishers Mfg., Inc. / 1953 County Street / East Taunton MA 02718 USA (800)822-4744 or (508)822-7330 / Email: info@jwfishers.com / www.jwfishers.com Underwater Search Equipment it PAYS to Own sudden changes, or Dansgaard-Oesch- ger events, have been observed in ice cores collected in Greenland. It's un- certain whether rising CO 2 levels will produce similar effects in the future be- cause the framework conditions today differ from those in a glacial period. OceanWise, Seatronics Complete Water, Temp Monitoring Project OceanWise and Seatronics have completed a three-year project to de- sign, install and deliver a network of 34 water level and temperature moni- toring stations for Bayanat LLC in the United Arab Emirates (UAE). Water level is being measured using Valeport VRS-20 radars, and water temperature is being measured using PT100 sensors from General Acoustics. All equipment is solar powered and housed in Vale- port's TideStation enclosures. Commu- nication with the stations occurs via the smart telemetry unit, the ip.buffer, from OceanWise over UAE's cellular network. Toxin Remains 40 Years After Discharge into James River A recent report from the Virginia In- stitute of Marine Science offers mixed OSIL Provides Buoy System For Patagonia Monitoring The University of Los Lagos (Chile) has installed an oceanographic obser- vation system manufactured by Ocean Scientific International Ltd. (OSIL) in the Seno de Reloncaví (Reloncaví Sound) immediately south of Puerto Montt in southern Chile, the first of its kind in the Patagonian region. The 1.9-m buoy system was de- signed to accommodate and integrate the instrument package required by the university project. The deploy- ment bracket holds an ADCP and a current meter 5 m below the buoy on the mooring assembly and includes a swivel to prevent entanglements, while the secure top frame accommodates a compact weather station measuring wind speed/direction, temperature, relative humidity and barometric pres- sure, and includes a GPS unit. The buoy was supplied with two AML Metrec•XL multiparameter sondes to measure temperature, salin- ity, oxygen, pH, chlorophyll a and tur- bidity. Data from the buoy are relayed to a shore-side base station via GSM. The project is intended to detect early-warning signs of harmful envi- ronmental changes such as red tides, algae bloom, fish mortality, volcanic eruptions and extreme weather events. The data gathered will also serve as a reference for all stakeholders in Los La- gos's marine ecosystem. Carbon Dioxide Can Lead To Abrupt Climate Changes During the last glacial period, with- in only a few decades, the influence of atmospheric CO 2 on the North Atlantic circulation resulted in temperature in- creases of up to 10° C in Greenland, as indicated by new climate calculations from researchers at the Alfred Wegener Institute (AWI) and the University of Cardiff. Their study is the first to con- firm that there have been situations in our planet's history in which gradually rising CO 2 concentrations have set off abrupt changes in ocean circulation and climate at tipping points. These environmentalmonitoring

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