{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T15:27:54Z","timestamp":1765380474038,"version":"3.46.0"},"reference-count":0,"publisher":"Society of Exploration Geophysicists","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1955,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>A formula is given which permits the relatively convenient calculation of the first vertical derivative of gravity in terms of the distribution of the second vertical derivative of gravity. The use of the formula is illustrated in a simple case. The formula is compared to Evjen's with respect to convenience of use.<\/jats:p>","DOI":"10.1190\/1.1438112","type":"journal-article","created":{"date-parts":[[2002,10,11]],"date-time":"2002-10-11T15:35:06Z","timestamp":1034350506000},"page":"148-154","source":"Crossref","is-referenced-by-count":11,"title":["The first vertical derivative of gravity"],"prefix":"10.1190","volume":"20","author":[{"given":"Herman A.","family":"Ackerman","sequence":"first","affiliation":[]},{"given":"C. Hewitt","family":"Dix","sequence":"additional","affiliation":[]}],"member":"186","published-online":{"date-parts":[[1955,1,1]]},"container-title":["Geophysics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.geoscienceworld.org\/seg\/geophysics\/article-pdf\/20\/1\/148\/3151395\/148.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.geoscienceworld.org\/seg\/geophysics\/article-pdf\/20\/1\/148\/3151395\/148.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T15:25:01Z","timestamp":1765380301000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.geoscienceworld.org\/geophysics\/article\/20\/1\/148\/67222\/The-first-vertical-derivative-of-gravity"},"secondary":[{"URL":"http:\/\/geophysics.geoscienceworld.org\/cgi\/doi\/10.1190\/1.1438112","label":"geoscienceworld"}]},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1955,1,1]]},"references-count":0,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1955,1,1]]}},"URL":"https:\/\/doi.org\/10.1190\/1.1438112","relation":{},"ISSN":["1942-2156","0016-8033"],"issn-type":[{"type":"electronic","value":"1942-2156"},{"type":"print","value":"0016-8033"}],"subject":[],"published-other":{"date-parts":[[1955,1,1]]},"published":{"date-parts":[[1955,1,1]]}}}