{"id":32623,"date":"2021-03-18T10:13:21","date_gmt":"2021-03-18T14:13:21","guid":{"rendered":"https:\/\/www.fondriest.com\/news\/?p=32623"},"modified":"2025-04-29T08:45:56","modified_gmt":"2025-04-29T12:45:56","slug":"harnessing-the-gulf-stream-for-renewable-energy","status":"publish","type":"post","link":"https:\/\/www.fondriest.com\/news\/harnessing-the-gulf-stream-for-renewable-energy.htm","title":{"rendered":"Harnessing the Gulf Stream for Renewable Energy"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">The Gulf Stream, the massive western boundary current off the east coast of North America, moves water from the Gulf of Mexico north and west across the Atlantic Ocean. There\u2019s a lot of energy in that much moving water and researchers are trying to put it to use.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Although the Gulf Stream\u2019s path shifts (researchers say it acts like a wiggling garden hose), in a couple of spots, it stays relatively stable. At one such spot off the coast of Cape Hatteras, North Carolina, researchers have dropped moorings and research instruments to study the current with the eventual goal of harnessing it for renewable energy.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A recently deployed mooring, subsurface buoy, and other monitoring instruments collect measurements that characterize the current and identify oceanic water masses in the area, key information in long-term renewable energy goals. Mike Muglia, an assistant research professor at East Carolina University\u2019s <a href=\"https:\/\/www.coastalstudiesinstitute.org\/\">Coastal Studies Institute<\/a> in Wanchese, North Carolina, was part of the team that deployed a highly collaborative suite of instruments in October.<\/span><\/p>\n<p><b>Measuring currents for renewable energy<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The October deployment is just a recent step in a long string of monitoring operations off the coast of Cape Hatteras, said Muglia, who is also the assistant director of the North Carolina Renewable Ocean Energy Program (NCROEP). NCROEP is a multi-institutional, state government-supported effort to harness the Gulf Stream for renewable energy. It is housed at the Coastal Studies Institute in Wanchese.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The deployed buoy is a subsurface buoy in development by the National Oceanic and Atmospheric Administration\u2019s Ocean Systems Testing and Evaluation Program (OSTEP) team led by Robert Heitsenrether. Muglia\u2019s team deployed CTDs\u2014which measure conductivity, temperature and pressure (depth)\u2014at their locations in the water column. They placed one at the buoy, 100 meters below the surface; another 165 meters deep; and one at the bottom-mooring 250 meters deep. The measurements gathered by the three CTDs will help the researchers identify the different water masses present at that location.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cape Hatteras is a unique location because several different water masses, some from thousands of miles away, come together there.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u201cThere\u2019s a bit of Antarctic water that travels along the base of the stream. And then you get deeper and you have some water from the Labrador Sea up north. And then you go deeper and you have water from Iceland,\u201d Muglia said.<\/span><\/p>\n<div id=\"attachment_32627\" style=\"width: 610px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-32627\" class=\"size-large wp-image-32627\" src=\"https:\/\/www.fondriest.com\/news\/wp-content\/uploads\/2021\/03\/Coastal_Studies_1-1-600x317.jpg\" alt=\"Gulf Stream\" width=\"600\" height=\"317\" srcset=\"https:\/\/news.fondriest.com\/wp-content\/uploads\/2021\/03\/Coastal_Studies_1-1-600x317.jpg 600w, https:\/\/news.fondriest.com\/wp-content\/uploads\/2021\/03\/Coastal_Studies_1-1-300x158.jpg 300w, https:\/\/news.fondriest.com\/wp-content\/uploads\/2021\/03\/Coastal_Studies_1-1-768x405.jpg 768w, https:\/\/news.fondriest.com\/wp-content\/uploads\/2021\/03\/Coastal_Studies_1-1.jpg 940w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-32627\" class=\"wp-caption-text\"><span style=\"color: #808080;\">This buoy, seen here during its October deployment, will gather information on the Gulf Stream for a year. (Credit: John McCord\/Coastal Studies Institute)<\/span><\/p><\/div>\n<p><span style=\"font-weight: 400;\">The team is also using acoustic doppler current profilers that can measure current throughout the entire water column. One is on the bottom mooring and the other is on the subsurface buoy 100 m below the sea surface.<\/span><\/p>\n<span class='bctt-click-to-tweet'><span class='bctt-ctt-text'><a href='https:\/\/x.com\/intent\/tweet?url=https%3A%2F%2Fwww.fondriest.com%2Fnews%2F%3Fp%3D32623&#038;text=Understanding%20the%20characteristics%20of%20the%20water%20column%2C%20the%20water%20masses%20present%20and%20both%20shallow%20and%20deeper%20currents%20is%20important%20information%20for%20harnessing%20the%20Gulf%20Stream%20for%20renewable%20energy.&#038;via=FondriestEnv&#038;related=FondriestEnv' target='_blank'rel=\"noopener noreferrer\">Understanding the characteristics of the water column, the water masses present and both shallow and deeper currents is important information for harnessing the Gulf Stream for renewable energy. <\/a><\/span><a href='https:\/\/x.com\/intent\/tweet?url=https%3A%2F%2Fwww.fondriest.com%2Fnews%2F%3Fp%3D32623&#038;text=Understanding%20the%20characteristics%20of%20the%20water%20column%2C%20the%20water%20masses%20present%20and%20both%20shallow%20and%20deeper%20currents%20is%20important%20information%20for%20harnessing%20the%20Gulf%20Stream%20for%20renewable%20energy.&#038;via=FondriestEnv&#038;related=FondriestEnv' target='_blank' class='bctt-ctt-btn'rel=\"noopener noreferrer\">Share on X<\/a><\/span>\n<p><span style=\"font-weight: 400;\">Any moorings or anchors for an energy-generating structure would need to withstand currents that change speed and even direction at different depths, Muglia said. Different water masses moving in different directions at different speeds can put a lot of strain on a mooring.<\/span><\/p>\n<p><b>A collaborative effort from the start<\/b><\/p>\n<p><span style=\"font-weight: 400;\">This isn\u2019t the first time Muglia has collaborated with OSTEP on a buoy deployment. Collaboration provides OSTEP with an opportunity to test their equipment in a suitable area he knows well and provides Muglia\u2019s team with oceanographic information like current velocity, temperature, and salinity in their focus area for Gulf Stream energy.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">OSTEP researches and develops measurement systems for oceanographic purposes. The buoy deployed in October \u201cmeasure[s] currents in a deep-water, high-current environment,\u201d according to the Coastal Studies Institute\u2019s<\/span><a href=\"https:\/\/www.coastalstudiesinstitute.org\/muglia-research-group-deploys-offshore-buoy-with-noaa\/\"> <span style=\"font-weight: 400;\">announcement of the project.<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">The acoustic doppler current profiler his team deployed measures current with a resolution of four meters up to about forty meters below the surface every 10 minutes, Muglia said.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">OSTEP\u2019s buoy will measure the water column at a much finer resolution: about one meter. The two current measuring systems will nicely complement each other, he said.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This is the second attempt at testing similar equipment after the first attempt didn\u2019t capture a full year of data.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Two other devices are attached to the buoy mooring, Muglia said.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Lindsay Dubbs, Muglia\u2019s colleague at the Coastal Studies Institute, attached a passive acoustic hydrophone, which listens for marine animals. Understanding what animals are in the area will be necessary information in any future permitting process for an energy-generating structure. The hydrophone observations are part of the team\u2019s effort to understand potential environmental impacts of these structures and attempt to mitigate them.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Joy Young, of Florida Atlantic Coastal Telemetry, contributed an acoustic receiver to the subsurface buoy, which will note the presence of tagged fish. For some animals, the Cape Hatteras area acts as a north or south boundary for their range.<\/span><\/p>\n<div id=\"attachment_32626\" style=\"width: 610px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-32626\" class=\"size-large wp-image-32626\" src=\"https:\/\/www.fondriest.com\/news\/wp-content\/uploads\/2021\/03\/Coastal_studies_2-600x399.jpg\" alt=\"Gulf Stream\" width=\"600\" height=\"399\" srcset=\"https:\/\/news.fondriest.com\/wp-content\/uploads\/2021\/03\/Coastal_studies_2-600x399.jpg 600w, https:\/\/news.fondriest.com\/wp-content\/uploads\/2021\/03\/Coastal_studies_2-300x199.jpg 300w, https:\/\/news.fondriest.com\/wp-content\/uploads\/2021\/03\/Coastal_studies_2-768x511.jpg 768w, https:\/\/news.fondriest.com\/wp-content\/uploads\/2021\/03\/Coastal_studies_2.jpg 940w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><p id=\"caption-attachment-32626\" class=\"wp-caption-text\"><span style=\"color: #808080;\">Researchers prepare to deploy a suite of research instruments off Cape Hatteras, North Carolina. (Credit: John McCord\/Coastal Studies Institute)<\/span><\/p><\/div>\n<p><b>Making progress towards a goal<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Muglia\u2019s group has been studying this area for seven or eight years, he said. The research is in service of the ultimate goal of harvesting renewable energy from the Gulf Stream. Making that a reality is going to rely on more than good research.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When exactly North Carolinians might have Gulf Stream electricity keeping the lights on and charging their phone is \u201cmore of a political question,\u201d Muglia wrote in a follow-up email.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">North Carolina is one of the only states that has dedicated money to developing ocean current energy. At this point, it\u2019s strictly for research and development.<\/span><a href=\"https:\/\/lakeworthbeachfl.gov\/news\/city-of-lake-worth-beach-partners-with-faus-southeast-national-marine-renewable-energy-center-on-groundbreaking-ocean-current-energy-initiative\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">Lake Worth, Florida<\/span><\/a><span style=\"font-weight: 400;\">, will likely be the first place the Gulf Stream is harnessed for electricity.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u201cAfter demonstrating success there, Cape Hatteras is the next likely place to consider,\u201d Muglia wrote.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">NCROEP will test an underwater kite being developed by Chris Vermillion\u2019s research team at North Carolina State University that could be used in the Gulf Stream later this year. They\u2019ll tow it behind a boat in an inland lake, a step toward testing something in the ocean current.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u201cI\u2019d dare to speculate that we could test something small scale there in 5 years,\u201d Muglia wrote.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Before any permanent turbine could be set in the Gulf Stream, questions of funding and permitting will have to be answered. Data generated from this most recent deployment of instruments could help answer them.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Gulf Coast stream could be a source of renewable energy. Recent buoys deployments look in that direction.<\/p>\n","protected":false},"author":37,"featured_media":32628,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,5,79,6,8,44,52],"tags":[2164,2268,2273,1681,2271,60,315,2269,74,2270,2267,2272,773],"class_list":["post-32623","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-earth-atmosphere","category-featured-articles","category-monitoring-gear-2","category-monitoring_tech-htm","category-newsfeed","category-oceans-coasts","category-technology","tag-cape-hatteras","tag-coastal-studies-institute","tag-current-profiling","tag-currents","tag-energy","tag-featured","tag-gulf-stream","tag-ncroep","tag-noaa","tag-ocean-energy","tag-oceanographic-buoys","tag-ostep","tag-waves"],"remote_post_permalink":false,"remote_post_featured_image":false,"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Harnessing the Gulf Stream for Renewable Energy<\/title>\n<meta name=\"description\" content=\"The Gulf Coast stream could be a source of renewable energy. 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