SIGATOKA, Fiji\u2014A wave buoy and temperature-monitoring mooring deployed on May 2 off Fiji\u2019s Coral Coast will provide ocean researchers, forecasters, mariners, surfers, and the public with real-time information about wave conditions and ocean temperatures. <\/p>\n
This information is critical to coastal early warning systems and to understanding the impact of ocean warming on coral reefs.<\/p>\n
A team of ocean experts from the Pacific Community, the Fiji Meteorological Service, the Fiji Navy, the University of the South Pacific\u2019s Centre for Environment and Sustainable Development, and the French National Research Institute for Sustainable Development teamed up on the deployment.<\/p>\n
The mooring is a combination of a surface wave buoy, which is a key component of the Coastal Inundation Forecasting Demonstration Project in Fiji, and a subsurface array of temperature sensors, which is a component of the Coastal Oceanography in the Pacific, Risk and Adaptation project.<\/p>\n
\u201cThe new buoy is already providing us with vital wave information on the ocean state off the coast of Sigatoka,\u201d said Fiji Meteorological Service director Ravind Kumar. \u201cThis will greatly improve Fiji Met\u2019s marine forecasting capability, and help us predict inundation events along the Coral Coast. For a comprehensive early warning system, Fiji needs more oceanographic buoys like this in other locations, so we hope this is just the beginning.\u201d<\/p>\n
This buoy will fill a critical data gap, not just in Fiji, but in the Pacific region.<\/p>\n
\u201cAround the world there are more than 300 wave buoys, but fewer than 1 percent are located in Pacific Islands countries and territories,\u201d said SPC manager for Oceans and Coastal Geoscience Jens Kruger.\u00a0 \u201cNow that this buoy is deployed, we\u2019ve reached 1 percent. Pacific Islanders are custodians of 20 percent of global ocean space, but we know very little about our region\u2019s wave climate.\u201d<\/p>\n
Wave buoys provide measurements of wave height, direction, and period. Without onsite observations from wave buoys, forecasters must rely on satellite readings, which are sparse, and on wave models, which work well in the high seas but do not give an accurate picture of what happens when waves reach shallow coastal zones.<\/p>\n
\u201cFiji had a wave buoy that was deployed in 1991, just south of Kadavu,\u201d said IRD oceanographer Dr. Jerome Aucan. \u201cEven though it was only in place for a year, the data from that one buoy is used time and time again to calibrate wave models and to verify satellite readings. It is an important resource, but we are long overdue for more precise data.\u201d<\/p>\n
Wave information is critical for coastal developers, climate change adaptation planning, safe and efficient navigation, renewable energy assessments, and understanding the impacts of extreme wave events during cyclones and storms<\/p>\n
Unfortunately, wave buoys have historically been very expensive and can be difficult to maintain. They are vulnerable to damage in cyclones and vandalism by fishermen who may use them as moorings. With improvements in technology, however, the new generation of wave buoys are smaller, easier to deploy, and significantly more cost effective.<\/p>\n
\u201cIn addition to information from the wave buoy, this installation will provide deep-water ocean temperature and internal wave information from sensors going down to a depth of 200m,\u201d said PaCE-SD, USP lecturer and researcher, Dr. Antoine De Ramon N\u2019Yeurt, who supported the joint proposal. \u201cIt will complement surface ocean temperature monitoring we\u2019ve conducted all over Fiji for the last seven years, and provide invaluable and new information on events such as internal waves, upwelling, and water mixing. Many of these ocean phenomena are not well-understood.\u201d<\/p>\n
\u201cWith support from IRD and USP, SPC is building its capability to deploy wave buoys and we hope to show the value of doing more such deployments around the region in partnership with national meteorological offices and the World Meteorological Organization,\u201d says SPC senior oceanographer Herve Damlamian who leads the CIFDP research team.<\/p>\n
When asked how many wave buoys he\u2019d like to see in the region, Damlamian said, \u201cWell, any technical person will say the more the better, but ideally you want a few strategically located in each country, particularly in areas that are vulnerable to large or complex waves. The offshore wave information collected would then improve confidence in local wave models.\u201d (PR)<\/p>\n","protected":false},"excerpt":{"rendered":"
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