The Effect of Rock Rheology on Rock Magnetism: A Possible Mechanism of Seismomagnetism

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摘要 Anexperimentofuniaxialcompressionwascarriedoutonsamplesof8representativerocktypes.Thetemporalvariationsoftheremanentmagnetization,strainandacousticemissionofsampleswererecordedandinvestigated,especiallywhenthesampleswereunderconstantloadandwhentheyhadjustbeenunloaded.Itwasfoundthatmostsamplesstillshowedchangesoftheirremanentmagnetizationunderconstantloadandthetendencyofthesechangesremainedthesameasthatbeforetheloadhadbeenkeptconstant.Inthemeantime,similarchangesofstrainswereobservedaswell.However,inashorttimeperiodimmediatelyafterthesamplehadbeencompletelyunloaded,thevariationsofremanentmagnetizationandstrainswerestillobserved.Theabovephenomenaseemtobethereflectionofrheologicalpropertiesofrocks.Itisinterestingtonotethatsomesimilarphenomenawerealsofoundinfieldobservations,suchasaseismicgeomagneticchangesandsecularvariationinlocalgeomagneticfieldbeforeandaftere
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机构地区 不详
出版日期 1994年03月13日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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