{"id":562,"date":"2019-03-16T17:38:45","date_gmt":"2019-03-16T17:38:45","guid":{"rendered":"http:\/\/depts.washington.edu\/astrobio\/wordpress\/?post_type=profile&#038;p=562"},"modified":"2020-10-22T21:10:16","modified_gmt":"2020-10-23T05:10:16","slug":"j-michael-brown","status":"publish","type":"profile","link":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/profile\/j-michael-brown\/","title":{"rendered":"J. Michael Brown"},"content":{"rendered":"\n<p>The overwhelming majority of Earth&#8217;s interior is not accessible to direct sampling or observation. Most of our understanding is based on remote sensing techniques (e.g., seismology). To interpret such observations, it is essential to have complimentary laboratory measurements. In our High-Pressure Mineral Physics Laboratory, we have an interdisciplinary program involving a variety of experimental and theoretical approaches. We seek an understanding of Earth based on an atomic-level understanding of constituent minerals. The underlying goal is an understanding of the thermal and compositional state of the Earth&#8217;s interior and its contribution to observed dynamical behavior. Current high pressure\/high temperature work includes:<\/p>\n\n\n\n<ol><li>measurement of elastic constants and thermal diffusivities of mineral under mantle conditions,<\/li><li>studies of equations of state and viscosities of fluids, and<\/li><li>measurements of elastic constants of metals under conditions approaching Earth&#8217;s core. These data provide a comprehensive framework for the understanding of how Earth and other planets work.<\/li><\/ol>\n\n\n\n<h3>Past Students<\/h3>\n\n\n\n<ul><li><a href=\"https:\/\/depts.washington.edu\/astrobio\/wordpress\/profile\/steve-vance\/\" target=\"_blank\" rel=\"noreferrer noopener\">Steve Vance<\/a><\/li><\/ul>\n\n\n\n<div class=\"wp-block-pb-accordion-item c-accordion__item js-accordion-item no-js\" data-initially-open=\"false\" data-click-to-close=\"true\" data-auto-close=\"true\" data-scroll=\"false\" data-scroll-offset=\"0\"><h3 id=\"at-50833\" class=\"c-accordion__title js-accordion-controller\" role=\"button\">Selected Publications<\/h3><div id=\"ac-50833\" class=\"c-accordion__content\">\n<p>Brown, J. M., The equation of state for iron to 450 GPa: Another high pressure phase?, Geophys. Res. Lett , 28, 4339-42, 2001<\/p>\n\n\n\n<p>Vance, S., and J. M. Brown, Layering and double-diffusion style convection in Europa\u2019s ocean, Icarus, 177 (2), 506\u2013514, 2005<\/p>\n\n\n\n<p>Brown, J.M., Abramson, E.H., Ross, R.L., Triclinic Elastic Constants for Low Albite, Phys Chem Minerals, 33, 256-265, 2006.<\/p>\n\n\n\n<p>Vance, S., J. Harnmeijer, J. Kimura, H. Hussmann and J.M. Brown, Hydrothermal Systems in Small Ocean Planets, Astrobiology, 7, 987-1005, 2007<\/p>\n\n\n\n<p>Crowhurst, J.C., J.M. Brown, A. Goncharov, S. Jacobsen, Elasticity of (Mg,Fe)O through the spin transition of iron in the lower mantle, Science, 319, 451-453, 2008<\/p>\n\n\n\n<p>Vance, S, and J.M. Brown, Thermodynamic properties of aqueous MgSO4 to 800 MPa at temperatures from \u000220 to 100 \u0002C and concentrations to 2.5 mol kg\u00021 from sound speeds, with applications to icy world oceans. Geochimica et Cosmochimica Acta 110,176\u2013189, 2013<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>In our High-Pressure Mineral Physics Laboratory, we have an interdisciplinary program involving a variety of experimental and theoretical approaches. We seek an understanding of Earth based on an atomic-level understanding of constituent minerals<\/p>\n","protected":false},"author":1,"featured_media":3836,"parent":0,"menu_order":0,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"tags":[],"profile_types":[27],"acf":[],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/profile\/562"}],"collection":[{"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/profile"}],"about":[{"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/types\/profile"}],"author":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":10,"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/profile\/562\/revisions"}],"predecessor-version":[{"id":4528,"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/profile\/562\/revisions\/4528"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/media\/3836"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/media?parent=562"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/tags?post=562"},{"taxonomy":"profile_types","embeddable":true,"href":"https:\/\/depts.washington.edu\/astrobio\/wordpress\/wp-json\/wp\/v2\/profile_types?post=562"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}