Popular in Course
math 201 Danhong Zhang - Business Pre-calculus
verified elite notetaker
verified elite notetaker
Popular in Geology
This 11 page Class Notes was uploaded by Jessica Braun MD on Saturday September 12, 2015. The Class Notes belongs to GEOL 554 at West Virginia University taught by Thomas Wilson in Fall. Since its upload, it has received 11 views. For similar materials see /class/202712/geol-554-west-virginia-university in Geology at West Virginia University.
Reviews for GEOL 554
Report this Material
What is Karma?
Karma is the currency of StudySoup.
Date Created: 09/12/15
md Exploration Geophysics II39 Don t forget to it the web site for slides and other info httpwwwge0wvueduNwilsonge015541ect21e02pdf Whizdistance r612 tionslups Ray tracing tomhwi1s0n tomwils0nmailwvuedu Department of Geology and Geography West Virginia University Morgantown WV V ixm1nml inmsuv iiJUiJJ S T iSdai S W Thursdays 12 to I m often in my of ce so feel free to drop by To be sure I m not tied up with something send me an email in advance wamm i iniwmn Class content and grading plora on project Grading 25 on computer labs 30 problem sets 10 mid term exam 20 Expl projectterm report and class presentation 15 nal exam Vwmxmu x mm gtPUE Hlt PULL gtPus o COMPRESSIONAL WAVE EAR H S WAVE VHummtl muwn GROUND ROLL gt SLOW O O FAST a gt OTHERWISE KIIOWN AS THE RAYLEIGH WAVE VmmMdmmn urface Wav es m m n mmnuunmumvma mumwank mm m w my mum H Um lImnA m why Emiqu mmwnn mmmd vthnrn w w gt1 Frmmu cm 1me 0 mm V Hunnml mm 11 quot Hera VR ltVL ltVs ltVP But this is not strictly true The Love wave is a surface wave and its velocity will be equal to the shear wave velocity in the upper medium The Love wave like the Rayleigh wave is also a dispersive wave That means that deeper Love wave motion usually propagates more rapidly since velocity increases with depth Shear waves beneath the surface layers are generally much faster than those in the surface so in application the shear waves that we are concerned with generally have higher velocity than the Love waves memuu i luluMn em vertical motion detectors Love waves tend not to be recorded in the conventional seismic survey where the interest is primarily in the recording of Pwaves The geophones used in such surveys respond to vertical ground motion and thus do not respond to the sidetoside vibrations produced by Love waves Rayleigh waves produce large vertical displacements and are a significant source of noise in the conventional Pwave reflection seismic survey Vw mimm i lnmwn wuwmmu mq Vwmmuuywag J Ldavtlmj li R 47 quanmmiwr VW1I HHI1MUIIIIuy 6 27239x 27ft gesow w Amplitude sin or 5111 2 239 through substitution for x vt or 2V239 we get two additional forms 27239vt 27239x 0 Am 11tude sm or sm 3 p VT vwmirgmmnmmy 39 imam v39 Elllek is accelerated into metal plate on ground su ace Vm xumnuUumm MECMHIUJ dlg h 39b mlf UJaiglal wmrmmUmmy The wavelet or p11 disturbance it V wkmmxljnuw VWtrmmL nmmy A Wave Packet 0r Wavelet Tw w wamxmulwmauy quot52 series can be as a sum of sinusofds PIG H I Summliwl Idisunle mmlm armnmms mm FIG Hz The gun lmqul culminating n In mun Ir quotI r haml ml wilh um mm peak ampliludc yinI ll 1m wan an 2 conxlnnl liln as Whm nuIvled lullMini quotmumm vale unrulan hy uh Ime m Ilvt yidd band limilcd s mmulic MAM mm is we In 1 dcml l by an angrisn This is u nmphm maul by HI mm on m qiw Illennlcll lay a mlnllkl wave v 39 vanmmunmsmnuummumnuHum v I a 1an animunamum vy 2 TIM Ilmlhlninrlurdlu u mam Mun weanIn momqu will In sumInd 1 Icy mmyummlu T m u quot VW NAiHZIHLIUIMUHI mechanical waves get pm point A to K 2 y a gamma mm mm mamas mum VWMWUHW 0 straight there or quotV39s mm 5 Ian r w R F quotWn c39imua s h Y H mm R Vmwwuh mm