{"id":934,"date":"2024-01-04T11:38:41","date_gmt":"2024-01-04T16:38:41","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/elecctro\/?page_id=934"},"modified":"2024-01-09T13:04:56","modified_gmt":"2024-01-09T18:04:56","slug":"no-melt","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/elecctro\/projects\/no-melt\/","title":{"rendered":"NO MELT"},"content":{"rendered":"\n\n\t<h1>NO MELT<\/h1>\n<p>The aim of the NOMELT experiment was to measure the structure of the oceanic lithosphere and the transition to the underlying asthenosphere in an area far away from any active tectonic influence. In this way, we aimed to understand the factors that control the formation and evolution of the lithosphere. The experiment featured the deployment of ocean bottom seismographs (OBS) and four MT stations. The MT data revealed an electrical model with an ~80 km thick resistive (&gt;103 \u03a9m) lithosphere overlying a less resistive (~50 \u03a9m) asthenosphere. Our electrical model is consistent with a mostly dry lithosphere to 80 km depth. Estimated water contents support a model in which the rheological lithosphere is a result of dehydration during melting at a mid-ocean ridge with the asthenosphere remaining partially hydrated and weakened as a result. The MT data show no evidence for melt in the upper asthenosphere.<\/p>\n<div id=\"attachment_950\" style=\"width: 1277px\" class=\"wp-caption alignnone\"><img aria-describedby=\"caption-attachment-950\" loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-content\/uploads\/sites\/158\/2024\/01\/nomelt.jpeg\" alt=\"\" width=\"1267\" height=\"721\" \/><p id=\"caption-attachment-950\" class=\"wp-caption-text\">Shown is the region of the NoMelt experiment. White stars indicate MT stations. Red stars are seismic stations. (Image from E. Sarafian et al. 2015)<\/p><\/div>\n\t<h3>Funding Agencies<\/h3>\n<p><a href=\"https:\/\/www.nsf.gov\"><img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/wp-content\/uploads\/sites\/3\/2016\/09\/nsf.png\" alt=\"nsf logo\" width=\"80\" height=\"80\" \/><\/a><\/p>\n\t<h3>Collaborators<\/h3>\n<p>Primary Collaborators:<\/p>\n<p>Emily Sarafian, Dan Lizarralde, John Collins (WHOI)<\/p>\n<p>Jim Gaherty, (Northern Arizona University)<\/p>\n<p>Greg Hirth, (Brown University).<\/p>\n<p>Josh Russell, (Syracuse University)<\/p>\n\t<h3>Research Papers<\/h3>\n<ul>\n<li><a href=\"https:\/\/doi.org\/10.1002\/2014GC005709\">The Electrical Structure of the Central Pacific Upper Mantle Constrained by the NoMelt Experiment<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><a href=\"https:\/\/doi.org\/10.1038\/nature18012\">Constraints on flow dynamics within the oceanic asthenosphere from a high resolution analysis of seismic anisotropy<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><a href=\"https:\/\/doi.org\/10.1186\/s40623-017-0724-1\">Constraints on Mantle Anisotropy in the NoMelt Area from an Analysis of Long-Period Seafloor Magnetotelluric Data<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><a href=\"https:\/\/doi.org\/10.1029\/2018JB016598\">High-resolution constraints on Pacific upper mantle petrofabric inferred from surface-wave anisotropy<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><a href=\"https:\/\/doi.org\/10.1029\/2018JB016451\">Azimuthal seismic anisotropy of 70 Ma Pacific-plate upper mantle<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><a href=\"https:\/\/doi.org\/10.1029\/2019JB019256\">Constraints on the depth, thickness, and strength of the G discontinuity in the central Pacific from S receiver functions<\/a><\/li>\n<\/ul>\n\n","protected":false},"excerpt":{"rendered":"<p>NO MELT The aim of the NOMELT experiment was to measure the structure of the oceanic lithosphere and the transition to the underlying asthenosphere in an area far away from any active tectonic influence. In this way, we aimed to understand the factors that control the formation and evolution of the lithosphere. The experiment featured&hellip;<\/p>\n","protected":false},"author":182,"featured_media":0,"parent":21,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-json\/wp\/v2\/pages\/934"}],"collection":[{"href":"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-json\/wp\/v2\/users\/182"}],"replies":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-json\/wp\/v2\/comments?post=934"}],"version-history":[{"count":3,"href":"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-json\/wp\/v2\/pages\/934\/revisions"}],"predecessor-version":[{"id":951,"href":"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-json\/wp\/v2\/pages\/934\/revisions\/951"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-json\/wp\/v2\/pages\/21"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/elecctro\/wp-json\/wp\/v2\/media?parent=934"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}