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dc.contributor.authorallHurrell, Stephenen
dc.contributor.editorallScalera, Giancarlo; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.editorallBoschi, Enzo; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.editorallCwojdzinski, Stefan; Polish Geological Surveyen
dc.description.abstractGalileo Galilei emphasised in the 17th century how scale effects impose an upper limit on the size of life. It is now understood that scale effects are a limiting factor for the size of life. A study of scale effects reveals that the relative scale of life would vary in different gravities with the result that the relative scale of land life is inversely proportional to the strength of gravity. This implies that a reduced gravity would explain the increased scale of ancient life such as the largest dinosaurs. In this paper, various methods such as dynamic similarity, leg bone strength, ligament strength and blood pressure are used to estimate values of ancient gravity assuming a Reduced Gravity Earth. These results indicate that gravity was less on the ancient Earth and has slowly increased up to its present-day value. The estimates of the Earth’s ancient reduced gravity indicated by ancient life are also compared with estimates of gravity for Constant Mass and Increasing Mass Expanding Earth models based on geological data. These comparisons show that the Reduced Gravity Earth model agrees more closely with an Increasing Mass Expanding Earth model.en
dc.relation.ispartofTHE EARTH EXPANSION EVIDENCE – A Challenge for Geology, Geophysics and Astronomy - Selected Contributions to the Interdisciplinary Workshop of the 37th International School of Geophysicsen
dc.subjectAncient Gravityen
dc.subjectExpanding Earthen
dc.subjectReduced gravity Earthen
dc.subjectScale effectsen
dc.titleAncient Life’s Gravity and its Implications for the Expanding Earthen
dc.typebook chapteren
dc.subject.INGV04. Solid Earth::04.03. Geodesy::04.03.05. Gravity variationsen
dc.description.obiettivoSpecifico2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attiveen
dc.publisherAracne Editrice, Romaen
dc.contributor.authorHurrell, Stephenen
dc.contributor.editorScalera, Giancarloen
dc.contributor.editorBoschi, Enzoen
dc.contributor.editorCwojdzinski, Stefanen
dc.contributor.editordepartmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.editordepartmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.editordepartmentPolish Geological Surveyen
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crisitem.classification.parent04. Solid Earth-
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