{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,3,14]],"date-time":"2025-03-14T04:19:48Z","timestamp":1741925988277,"version":"3.38.0"},"reference-count":67,"publisher":"University of Toronto Press Inc. (UTPress)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cartographica"],"published-print":{"date-parts":[[2019,9]]},"abstract":"<jats:p> \u201cOn the Measurement of the Earth\u201d continues the tradition, which dates back to ancient Greece and the time of Eratosthenes, of works on geodesy. The title is that of the lost work of Eratosthenes on the subject. Cherishing our planet through attention to its dimensions allows us to \u201cknow our place\u201d and enjoy the wisdom that comes from this awareness. That the Earth has an ellipsoidal, not spherical, shape is well known. While Chimborazo\u2019s resulting status as the point farthest from the Earth\u2019s centre is generally understood, many other implications are unappreciated or hitherto undocumented. These include consideration of how to define the height of a mountain, calculation of the place closest to the Earth\u2019s centre, a formula for calculating distance to the Earth\u2019s centre for any point, a list of summits based on distance from the centre of the Earth and corrected for the geoid, calculation of the Earth\u2019s fastest-moving points, and new \u201cSeven Summits\u201d lists. The new concept of terrahelion allows calculation of the land point on the Earth\u2019s surface that comes closest to the Sun each year at perihelion. The insights that result from these new considerations of planetary shape provide new exploration opportunities. <\/jats:p>","DOI":"10.3138\/cart.54.3.2018-0012","type":"journal-article","created":{"date-parts":[[2019,9,18]],"date-time":"2019-09-18T19:47:56Z","timestamp":1568836076000},"page":"145-192","source":"Crossref","is-referenced-by-count":0,"title":["On the Measurement of the Earth: New Approaches to Our Planet\u2019s Distinctive Shape"],"prefix":"10.3138","volume":"54","author":[{"given":"Charles","family":"Helm","sequence":"first","affiliation":[{"name":"Research \/ Peace Region Palaeontology Research Centre \/ Tumbler Ridge \/ BC \/ Canada"}]},{"given":"Paul","family":"Klenke","sequence":"additional","affiliation":[{"name":"Independent researcher \/ Seattle \/ WA \/ USA"}]}],"member":"1696","reference":[{"key":"r1","unstructured":"ACME Laboratories. n.d. ACME Mapper 2.2. Available at http:\/\/www.acme.com\/mapper\/."},{"key":"r2","unstructured":"Andean, B. n.d. 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