{"id":21044,"date":"2020-01-01T20:27:24","date_gmt":"2020-01-01T19:27:24","guid":{"rendered":"http:\/\/karmaka.de\/?p=21044"},"modified":"2020-01-01T20:28:30","modified_gmt":"2020-01-01T19:28:30","slug":"the-end-of-the-lunar-dynamo","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=21044","title":{"rendered":"The end of the lunar dynamo<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Saied Mighani, Huapei Wang, David L. Shuster, Cau\u0207 S. Borlina, Claire I. O. Nichols, Benjamin P. Weiss<\/p>\n\n\n\n<p>Science Advances  01 Jan 2020:<br>\nVol. 6, no. 1, eaax0883<br>\nDOI: 10.1126\/sciadv.aax0883 <\/p>\n\n\n\n<p><a href=\"https:\/\/advances.sciencemag.org\/content\/6\/1\/eaax0883\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br>\n<a href=\"https:\/\/advances.sciencemag.org\/content\/advances\/6\/1\/eaax0883.full.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Magnetic measurements of the lunar crust and Apollo samples indicate that the Moon generated a dynamo magnetic field lasting from at least 4.2 until &lt;2.5 billion years (Ga) ago. However, it has been unclear when the dynamo ceased. Here, we report paleomagnetic and 40Ar\/39Ar studies showing that two lunar breccias cooled in a near-zero magnetic field (&lt;0.1 \u03bcT) at 0.44 \u00b1 0.01 and 0.91 \u00b1 0.11 Ga ago, respectively. Combined with previous paleointensity estimates, this indicates that the lunar dynamo likely ceased sometime between ~1.92 and ~0.80 Ga ago. The protracted lifetime of the lunar magnetic field indicates that the late dynamo was likely powered by crystallization of the lunar core.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Saied Mighani, Huapei Wang, David L. Shuster, Cau\u0207 S. Borlina, Claire I. O. Nichols, Benjamin P. Weiss Science Advances 01 Jan 2020: Vol. 6, no. 1, eaax0883 DOI: 10.1126\/sciadv.aax0883 LINK (OPEN ACCESS) PDF (OPEN ACCESS)&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,115,219],"tags":[3259,1279,2238,2745,218,1857,590],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/21044"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=21044"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/21044\/revisions"}],"predecessor-version":[{"id":21045,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/21044\/revisions\/21045"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21044"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21044"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21044"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}