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www.sea-technology.com September 2015 / st 61 by hydrogen fuel cell technology and a hydrogen refueling station. The fuel cell would provide power for the ferry's propulsion and auxiliary electrical systems, while the hydrogen refueling station—which would be the largest in the world—would service the ferry, electric cars, buses, and feet vehicles, and other maritime vessels powered by fuel cells. XMET Monitors Weather To Aid Recovery Mission The Scripps Institution of Ocean- ography, U.S. Air Force, Alaska Army National Guard, and Defense POW/ MIA Accounting Agency used a por- table weather station (the Expedition- ary Meteorology System, or XMET), developed with support from the Of- fce of Naval Research (ONR), to moni- tor conditions at a 1952 crash site of a military transport aircraft on Alaska's Mount Gannett. The site can only be accessed by he- licopter, and the XMET provided valu- able meteorological measurements to let recovery crews know if it was safe to fy each day. The solar battery-powered system uses sensors to compile real-time mea- surements of rain, wind, temperature and visibility, relaying hourly weather information via satellite to planners who can use the data to cancel or pro- ceed with a mission. Previously, such detailed information could only come from observers on the ground. Ice Cave Study for Interplanetary Insight The Mount Rainier Fumarole Cave Project, set for Aug. 13 to 22, was to collect data from inside an ice cave within a glacier atop Mount Rainier to study the impact of global climate change and how life can thrive in extreme conditions, including other planets. Ball State's Lee Florea, assistant professor of geology, joined research- ers from New Mexico Tech and Ruhr- University Bochum in Germany, along with a team of experienced cavers, at the 14,410-foot-high summit of Mount Rainier for the project. Tracking Huge Undersea Waves via Satellite A scientifc research team spent seven years tracking the movements of skyscraper-high waves in the South China Sea. University of Miami (UM) Rosenstiel School of Marine and At- mospheric Science scientists were part of the collaborative international feld study, published in Nature, trying to understand how these waves, which rarely break the ocean surface, devel- op, move and dissipate underwater. These waves, known as internal waves, occur in all the oceans, as well as in lakes and fjords. In the Luzon Strait, they can reach up to 170 m tall and travel several hundred kilometers, making them some of the largest waves in the world. Using satellite imagery collected at UM's Center for Southeastern Tropical Remote Sensing, scientists were able to detect and track them from above. The team discovered that internal waves are generated daily from internal tides, which also occur below the ocean sur- face, and grow larger as the water is pushed westward through the Luzon Strait into the South China Sea. These waves move huge volumes of heat, salt and nutrient-rich water, which are important to fsh, industrial fshing operations and the global climate. In addition, they are important to monitor for safe submarine operations. ST October 4-7, 2015 Catamaran Resort San Diego, CA, USA EXPLORE www.tm-techworkshop.com Join the live demos at: New MB2 Multibeam Echosounder Fully integrated for fast mobilisation on smaller vessels Paleo inlet channel scour To know more, contact us at: www.odomhydrographic.com