{"id":1964,"date":"2023-11-01T20:48:09","date_gmt":"2023-11-01T20:48:09","guid":{"rendered":"https:\/\/live-usc-dornsife.pantheonsite.io\/uscseagrant\/?page_id=1964"},"modified":"2024-05-15T19:59:27","modified_gmt":"2024-05-15T19:59:27","slug":"californias-cobbles","status":"publish","type":"page","link":"https:\/\/dornsife.usc.edu\/uscseagrant\/californias-cobbles\/","title":{"rendered":"California\u2019s Cobbles"},"content":{"rendered":"\n\n\n\n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--accordions \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--accordions\"\n    \n      >\n\n    \n      <div class=\"header-container\">\n\n                  \n<div class=\"f--field f--section-title\">\n\n    \n  <h2>\n          First study to track beach cobbles and their influence on beach stability\n      <\/h2>\n\n\n<\/div>\n      \n                  \n<div class=\"f--field f--description\">\n\n    \n  <p><span style=\"font-weight: 400;\">Cobbles\u20142.5 to 6-inch diameter stones\u2014naturally stabilize many California beaches. They have been used to construct artificial protective berms and will increasingly influence shoreline change in the face of sea level rise. However, the distribution of cobbles in space and time and the dynamics of their motion are poorly understood. University of Southern California (USC) Sea Grant funded a study using a new radio-frequency identification (RFID) technology to track individual cobbles at Torrey Pines State Beach in San Diego County. This study will provide the first quantitative analysis of cobble movement and help inform the use of cobble as a potential natural shoreline stabilization method in the face of erosion and sea level rise. <\/span><\/p>\n\n\n\n<\/div>\n      \n      \n    <\/div>\n  \n  \n  \n\n  <\/div><\/div>\n\n\n\n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--rich-text \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--rich-text\"\n    \n      >\n\n    \n      \n<div class=\"f--field f--wysiwyg\">\n\n    \n  <h3><b>Key Results<\/b><span style=\"font-weight: 400;\">:<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hundreds of tagged cobbles were released on a California beach and tracked for 26 months. <\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cobble movement exhibited complex patterns. Cobble displacement increased with wave energy and detection rates generally decreased with time. Cobbles high on the back of the beach were relatively stable compared to lower-elevation cobbles. More than half of all cobble detections were within 50 m of the initial release location.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The research proved the effectiveness of this novel RFID as a tracking tool and was published in the <\/span><i><span style=\"font-weight: 400;\">Journal of Geophysical Research: Earth Surface<\/span><\/i><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><b>Project Impacts &amp; Application:<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Presented at the Torrey Pines Docent Society, Scripps Institution of Oceanography, and the Osher Lifelong Learning Institute<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Shared results during meetings with California State Parks Managers and the California Coastal Commission<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Provided a briefing to the Office of Management and Budget, Executive Office of the President<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Featured on CBS 8 News, San Diego\u00a0<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><b>Principal Investigators:<\/b><\/h3>\n<ul>\n<li><span style=\"font-weight: 400;\">Adam Young, Ph.D., University of California San Diego\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Mark Merrifield, Ph.D., University of California San Diego<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Mark Dickson, Ph.D., University of Auckland, New Zealand<\/span><\/li>\n<\/ul>\n<h3><\/h3>\n<p>&nbsp;<\/p>\n<h3><b>Funding: <\/b><\/h3>\n<p><span style=\"font-weight: 400;\">NOAA, 2020-2022<\/span><\/p>\n<h3><\/h3>\n<p>&nbsp;<\/p>\n<h3><b>Additional Info and Publications:<\/b><b>\u00a0<\/b><\/h3>\n<ul>\n<li><a href=\"https:\/\/siocpg.ucsd.edu\/projects\/cobble-tracking\/\"><span style=\"font-weight: 400;\">https:\/\/siocpg.ucsd.edu\/projects\/cobble-tracking\/<\/span><\/a><\/li>\n<li><a href=\"https:\/\/dornsife.usc.edu\/uscseagrant\/beach-cobbles\/\"><span style=\"font-weight: 400;\">https:\/\/dornsife.usc.edu\/uscseagrant\/beach-cobbles\/<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.cbs8.com\/article\/news\/local\/storms-transform-san-diego-beaches\/509-1b178b60-383d-4b0a-b23f-31f21b7242b7\"><span style=\"font-weight: 400;\">https:\/\/www.cbs8.com\/article\/news\/local\/storms-transform-san-diego-beaches\/509-1b178b60-383d-4b0a-b23f-31f21b7242b7<\/span><\/a><\/li>\n<li><span style=\"font-weight: 400;\">Young, A. P., Matsumoto, H., Spydell, M. S., &amp; Dickson, M. E. (2023). Cobble tracking observations at Torrey Pines State Beach, CA, USA. <\/span><i><span style=\"font-weight: 400;\">Journal of Geophysical Research: Earth Surface<\/span><\/i><span style=\"font-weight: 400;\">, 128, e2023JF007199. <\/span><a href=\"https:\/\/doi.org\/10.1029\/2023JF007199\"><span style=\"font-weight: 400;\">https:\/\/doi.org\/10.1029\/2023JF007199<\/span><\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><a class=\"cta-link\" href=\"\/uscseagrant\/publications-database\/\">Access our Publications Database to view publications from this project or other related topics<\/a><\/p>\n\n\n\n<\/div>\n\n\n  <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":74,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-content-detail.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-1964","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - 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