{"id":1812,"date":"2016-01-12T15:34:47","date_gmt":"2016-01-12T15:34:47","guid":{"rendered":"https:\/\/echoesofthelastmind.com\/?page_id=1812"},"modified":"2025-10-08T18:19:32","modified_gmt":"2025-10-08T18:19:32","slug":"what-is-grav-d","status":"publish","type":"page","link":"https:\/\/echoesofthelastmind.com\/?page_id=1812","title":{"rendered":"What is GRAV-D?"},"content":{"rendered":"\n<div class=\"wp-block-group has-background is-vertical is-layout-flex wp-container-core-group-is-layout-1962b265 wp-block-group-is-layout-flex\" style=\"border-width:3px;border-radius:15px;background-color:#2121217a;padding-right:var(--wp--preset--spacing--40);padding-left:var(--wp--preset--spacing--40)\"><figure class=\"wp-block-post-featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"500\" src=\"https:\/\/echoesofthelastmind.com\/wp-content\/uploads\/2016\/01\/grav-d.jpg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"[aggregator] downloaded image for imported item #1812\" style=\"border-radius:15px;object-fit:cover;\" srcset=\"https:\/\/echoesofthelastmind.com\/wp-content\/uploads\/2016\/01\/grav-d.jpg 960w, https:\/\/echoesofthelastmind.com\/wp-content\/uploads\/2016\/01\/grav-d-300x156.jpg 300w, https:\/\/echoesofthelastmind.com\/wp-content\/uploads\/2016\/01\/grav-d-768x400.jpg 768w, https:\/\/echoesofthelastmind.com\/wp-content\/uploads\/2016\/01\/grav-d-18x9.jpg 18w\" sizes=\"auto, (max-width: min(min(calc(100% - var(--wp--preset--spacing--xl,4rem)), 720px), 960px)) 100vw, min(min(calc(100% - var(--wp--preset--spacing--xl,4rem)), 720px), 960px)\" title=\"What is GRAV-D?\"><\/figure>\n\n\n<p>\u00a0<\/p>\n<div>\n<p><br \/>GRAV-D measures and monitors Earth\u2019s gravity field to support the geoid\u2014a model of roughly global mean sea level used to measure precise surface elevations\u2014so that it may serve as the \u201czero reference surface\u201d for all heights in the nation. Accurate heights are critical to many scientific endeavors, but are particularly important for protecting low-lying coastal ecosystems.<\/p>\n<p><a class=\"more-link\" href=\"https:\/\/oceanservice.noaa.gov\/facts\/grav-d.html\">Continue reading \u2192<\/a><\/p>\n<\/div>\n<p>\u00a0<\/p>\n<\/div>\n<p>This  was originally published on https:\/\/oceanservice.noaa.gov\/facts\/grav-d.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 GRAV-D measures and monitors Earth\u2019s gravity field to support the geoid\u2014a model of roughly global mean sea level used to measure precise surface elevations\u2014so that it may serve as the \u201czero reference surface\u201d for all heights in the nation. Accurate heights are critical to many scientific endeavors, but are particularly important for protecting low-lying [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1813,"parent":280,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1812","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=\/wp\/v2\/pages\/1812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1812"}],"version-history":[{"count":2,"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=\/wp\/v2\/pages\/1812\/revisions"}],"predecessor-version":[{"id":2217,"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=\/wp\/v2\/pages\/1812\/revisions\/2217"}],"up":[{"embeddable":true,"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=\/wp\/v2\/pages\/280"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=\/wp\/v2\/media\/1813"}],"wp:attachment":[{"href":"https:\/\/echoesofthelastmind.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}