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1、VISCOELASTICWAVESINLAYEREDMEDIAThisbookisarigorous,self-containedexpositionofthemathematicaltheoryforwavepropagationinlayeredmediawitharbitraryamountsofintrinsicabsorption.Thetheory,previouslynotpublishedinabook,providessolutionsforfundamentalwave-propag
2、ationproblemsinthegeneralcontextofanymediawithalinearresponse(elasticoranelastic).Itrevealsphysicalcharacteristicsfortwo-andthree-dimensionalanelasticbodyandsurfacewaves,notpredictedbycommonlyusedmodelsbasedonelasticityorone-dimensionalanelasticity.Itexp
3、lainsobservedwavecharacteristicsnotexplainedbyprevioustheories.Thisbookmaybeusedasatextbookforgraduate-levelcoursesandasaresearchreferenceinavarietyoffieldssuchassolidmechanics,seismology,civilandmechanicalengineering,explorationgeophysics,andacoustics.T
4、hetheoryandnumericalresultsallowtheclassicsubjectoffundamentalelasticwavepropagationtobetaughtinthebroadercontextofwavesinanymediawithalinearresponse,withoutunduecomplicationsinthemathematics.Theyprovidethebasistoimproveavarietyofanelasticwave-propagatio
5、nmodels,includingthosefortheEarth’sinterior,metalimpurities,petroleumreserves,polymers,soils,andoceanacoustics.Thenumericalexamplesandproblemsfacilitateunderstandingbyemphasizingimportantaspectsofthetheoryforeachchapter.RogerD.BorcherdtisaResearchScienti
6、stattheU.S.GeologicalSurveyandConsultingProfessor,DepartmentofCivilandEnvironmentalEngineeringatStanfordUniversity,wherehealsoservedasvisitingShimizuProfessor.Dr.Borcherdtistheauthorofmorethan180scientificpublicationsincludingseveralonthetheoreticalandem
7、piricalaspectsofseismicwavepropagationpertainingtoproblemsinseismology,geophysics,andearthquakeengineering.Heistherecipi-entofthePresidentialMeritoriousServiceandDistinguishedServiceawardsoftheDepartmentofInteriorforScientificLeadershipinEngineeringSeism
8、ology,andthe1994and2002OutstandingPaperAwardsofEarthquakeSpectra.HeisanhonorarymemberoftheEarthquakeEngineeringResearchInstitute,apastjournalandvolumeeditor,andanactivememberofseveralprofessionalsocieties.VISCOELASTICWAVES