{"id":795,"date":"2023-08-11T13:20:05","date_gmt":"2023-08-11T17:20:05","guid":{"rendered":"https:\/\/wpstaging.whoi.edu\/site\/deeptow\/?page_id=795"},"modified":"2023-10-25T15:34:03","modified_gmt":"2023-10-25T19:34:03","slug":"ship-towed-magnetometers","status":"publish","type":"page","link":"https:\/\/website.whoi.edu\/deeptow\/facilities\/ship-towed-magnetometers\/","title":{"rendered":"Ship-towed Magnetometers"},"content":{"rendered":"\n\n\t<h1>Ship-towed Magnetometers<\/h1>\n\t<p>Woods Hole Oceanographic Institution has two types of sea surface magnetometers for use on its vessels. One is a\u00a0<a href=\"http:\/\/www.geometrics.com\/\">Geometrics<\/a>\u00a0Model 866, which is a standard proton precession type of magnetometer that has been a mainstay sensor in the US research fleet for past few decades. Our new sensor is a\u00a0<a href=\"http:\/\/www.marinemagnetics.com\/\">Marine Magnetics Seaspy<\/a>\u00a0nuclear precession sensor which uses the &#8220;Overhauser effect&#8221; to obtain an absolute measurement of Earth&#8217;s magnetic field intensity. These sensors are typically towed approximately 300 meters behind the ship. These sensors are operated as part of the WHOI ship&#8217;s normal geophysical equipment roster. Please contact the\u00a0WHOI Shipboard Science Services Group (SSSG)\u00a0for operations on WHOI ships. For other operations please contact the\u00a0<a href=\"https:\/\/www2.whoi.edu\/site\/miso\/\">MISO facility<\/a>, which has sensors for use on other vessels.<\/p>\n\nWHOI SSSG<br \/>\n<a href=\"mailto:sssg@whoi.edu\">sssg@whoi.edu<\/a>\n<strong>How they work<\/strong><br \/>\nFollow this link below for more details on how ship-towed marine magnetometers work.\n\t\t\t\t<a href=\"https:\/\/website.whoi.edu\/deeptow\/wp-content\/uploads\/sites\/66\/2023\/08\/maggie_winch.jpg\" target=\"_self\" rel=\"noopener\">\n\t\t\t\t<img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/website.whoi.edu\/deeptow\/wp-content\/uploads\/sites\/66\/2023\/08\/maggie_winch.jpg\" alt=\"Sea surface maggie winch on the stern of a research vessel.\" height=\"1200\" width=\"1600\" title=\"maggie_winch\" \/>\n\t\t\t\t<\/a>\n\t\tSea surface maggie winch on the stern of a research vessel. Photo credit: M.A. Tivey\n\t\t\t\t<a href=\"https:\/\/website.whoi.edu\/deeptow\/wp-content\/uploads\/sites\/66\/2023\/08\/marinemag_3.jpg\" target=\"_self\" rel=\"noopener\">\n\t\t\t\t<img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/website.whoi.edu\/deeptow\/wp-content\/uploads\/sites\/66\/2023\/08\/marinemag_3.jpg\" alt=\"Marine Magnetics SeaSpy sea surface towed overhauser magnetometer sensor.\" height=\"480\" width=\"360\" title=\"marinemag_3\" \/>\n\t\t\t\t<\/a>\n\t\tMarine Magnetics SeaSpy sea surface towed overhauser magnetometer sensor. Photo credit: Chris Griner.\n\n","protected":false},"excerpt":{"rendered":"<p>Ship-towed Magnetometers Woods Hole Oceanographic Institution has two types of sea surface magnetometers for use on its vessels. One is a\u00a0Geometrics\u00a0Model 866, which is a standard proton precession type of magnetometer that has been a mainstay sensor in the US research fleet for past few decades. Our new sensor is a\u00a0Marine Magnetics Seaspy\u00a0nuclear precession sensor&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":305,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":""},"_links":{"self":[{"href":"https:\/\/website.whoi.edu\/deeptow\/wp-json\/wp\/v2\/pages\/795"}],"collection":[{"href":"https:\/\/website.whoi.edu\/deeptow\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/website.whoi.edu\/deeptow\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/website.whoi.edu\/deeptow\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/website.whoi.edu\/deeptow\/wp-json\/wp\/v2\/comments?post=795"}],"version-history":[{"count":3,"href":"https:\/\/website.whoi.edu\/deeptow\/wp-json\/wp\/v2\/pages\/795\/revisions"}],"predecessor-version":[{"id":1071,"href":"https:\/\/website.whoi.edu\/deeptow\/wp-json\/wp\/v2\/pages\/795\/revisions\/1071"}],"up":[{"embeddable":true,"href":"https:\/\/website.whoi.edu\/deeptow\/wp-json\/wp\/v2\/pages\/305"}],"wp:attachment":[{"href":"https:\/\/website.whoi.edu\/deeptow\/wp-json\/wp\/v2\/media?parent=795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}