seismic waves ppt

View 12 - Pre-Assessment and Seismic Waves.pptx from SCITECS 2018-2019 at Asia Pacific College. vertical or horizontal inner core planes Characteristics of Seismic Waves L, Love, Transverse horizontal VL ~ 2.0 - 4.5 km/s Love waves exist because of the Surface waves, motion, perpendicular to in the Earth Earths surface. ��%2F�?�k⏆?�|�&��QK��-��. The study of earthquake waves, seismology, dates back almost 2000 years to the Chinese. Waves generated by an earthquake are called seismic waves. Waves and wave motion From the diagram we can see that: The distance between two consecutives nodes is /2 The distance between two consecutive antinodes is /2 The distance between an anti-node and the next node is /4 The Doppler effect is the apparent change in frequency of a wave due to the motion of the source or the observer. Different components of the seismic record may be used, including traveltimes, amplitudes, waveform spectra, full waveforms or the entire waveﬁeld. $4�%�&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz�� ? When this happens, waves of energy are released and if strong enough, cause the surface of the Earth to tremble noticibly. Measure the interval (in … The Seismic Wave Equation Using the stress and strain theory developed in the previous chapter, we now con-struct and solve the seismic wave equation for elastic wave propagation in a uniform whole space. Download Seismic PowerPoint templates (ppt) and Google Slides themes to create awesome presentations. Records the movement of Earth in relation to a stationary mass on a rotating drum or magnetic tape You can change your ad preferences anytime. These waves are of a higher frequency than surface waves. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 6fea40-ODU3M Surface waves(L-Waves) - are of a lower frequency than body waves, and are easily distinguished on a seismogram as a result. (Va�6�#U�Y��p͐ L��W��!�x�D�Ͱ��,��L�c}��V �2�ڸ[��X�і�5OMn��h�RE�&v��A�t��IE;v�F��?�|8�G��2��>)�B�c/$�+*璪d*�H��n��w��|]�a��еskv"��sv��V"��H�T��B�Q� xgP��9��ε2��7��Lv) ��t�7�K_��gew%܆ڡ#~�ĝ� G��0�n�*��Ʃ5�^��ok&ne��s��Z��v�@7,y*w��(��l&��[�MX�ә#Ԟ��͏�cs��ٖ��Z��aw�i�ٗ��G%՗��}�VP^/1x}�J�dU��᭿�;]K��n�8�֗M�E�W��P8��F�i%Ub! Seismographs are instruments that record seismic waves. Seismic Waves. elastic waves, because they deform the Earth elastically - the rock returns to its original shape and position after the seismic wave passes through. Types of Seismic Waves Seismic waves carry energy from an earthquake away from the focus, through Earth s interior, and across the surface. B 3. B 10. They are the energy that travels through the earth and recorded on seismographs. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Types `Seismic Waves Body waves - arrive before the surface waves emitted by an earthquake. See our Privacy Policy and User Agreement for details. The study of seismic waves provides evidence for the internal structure of the Earth, which otherwise cannot be observed directly. The P wave can move through solid rock and fluids, like water or the liquid layers of the earth. Composition. C 9. They are caused when rock breaks or is deformed. See our User Agreement and Privacy Policy. shock wave. An example of a non-elastic wave is a . A 5. Clipping is a handy way to collect important slides you want to go back to later. Seismic waves tend to slow down as they travel through hot material. The prefix comes from the ancient Greek word ”seismos” which means “to shake”. Earth structure from seismic waves. Looks like you’ve clipped this slide to already. Richter scale) - based on amplitude of waves with 1s period within 600 km of epicentre. The Career Account database server will be down on Saturday December 19 from 4pm to 10pm. `Types Seismic Waves Body waves - arrive before the surface waves emitted by an earthquake. Presentation Summary : They … In other words, the speed of propagation is … P- and S-waves are referred to as body waves because they are transmitted through the volume (or body) of the material, as apposed to travelling along the surface. How Earthquake Waves Provide Information about the Interior of the Earth Seismic ` Waves These are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. Module 2 The Earth’s Interior Pre-Assessment I. PPT | High-resolution; In addition to body waves, earthquakes also generate surface waves, typically Rayleigh (R) waves. Created: Mar 3, 2007 | Updated: Feb 22, 2018. In physics, waves are usually divided into progressive and standing waves. At such an interface, the energy within an incident seismic wave is partitioned into transmitted and reflected waves. Hand out the attached Engineering & Waves: Seismic Waves PPT Worksheet to aid in note-taking and help students be accountable for the information provided in the presentation. �� } !1AQa"q2��#B��R��$3br� In these lecture notes, we shall deal only with this type of waves. 1. You can think of these waves by picturing the ripples created when a stone is thrown into a puddle or lake. There is a large amount of geologic activity and movement along the borders of these plates. Pressure. Progressive seismic waves propagate away from seismic sources. Seismic There Are Different Types Of Seismic Waves Based On The Movement 247153 PPT Presentation Summary : There are different types of seismic waves based on the movement. Seismic waves are mechanical vibrations that occur inside the Earth. Preview. Body waves can travel Reflection and Transmission of seismic waves in layered media At an interface between two rock layers there is generally a change in propagation velocity resulting from difference in physical properties of the two layers. A 7. The seismic wave speed of a material depends mainly its upon: Temperature. A 6. %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz�� Mb=body-wave (similar to above) Ms=surface wave (wave periods of 20s measured anywhere on globe Mo=seismic moment Mw= moment magnitude The Richter scale Steps: 1. Free + Easy to edit + Professional + Lots backgrounds. Body Waves P Waves (compression wave) The first kind of body wave is the P wave or primary wave. This is the fastest kind of seismic wave. Both types of body waves are non-dispersive (in purely elastic media). The two major types are body waves (S and P waves) and surface waves. Body waves(P and S-waves) Surface waves(Love and Rayleigh waves) Can be download for class presentation. (slide 1; title slide) Ocean waves and surface waves both propagate from disturbances. Seismic waves are also called . Download what are seismic waves PPT for free. Displaying Powerpoint Presentation on what are seismic waves available to view or download. Database Downtime. Seismic wave, vibration generated by an earthquake, explosion, or similar energetic source and propagated within the Earth or along its surface. Presentation Title: What Are Seismic Waves? 3 9 customer reviews. Earthquakes. Characteristics of each seismic waves. Junior geophysicists pretend that they are hired to analyze seismic waves. Though they arrive after body waves, it is surface waves that are almost entirely responsible for the damage … This resource includes 31 slides; - Mechanical WAVES; - Spring waves - Water waves - Sound waves - Sound revision - Seismic waves (Earthquake etc.) Elastic Waves. �.�(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(�3��+� �=��ө%��}��Ǖ�c�^9��ڏƚ4+�x��|�n��,b��Y&3��H�M� � �!��\�7�~3|b�Ǆ5_i��z��wx. Seismic waves powerpoint. A 8. Seismic waves are also of these two types. CrystalGraphics brings you the world's biggest & best collection of seismic waves PowerPoint templates. If you continue browsing the site, you agree to the use of cookies on this website. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 7ef08e-Y2E4M - Tsunami - Electromagnetic WAVES; - Applications of EMW - Longitudinal Waves - Transverse Waves - REFRACTION of Waves - DIFFRACTION of Waves Everything is ready to be used or easily edited to suit your learners. Grade 10 - Generosity. No public clipboards found for this slide. D 2. The two main types of waves are body waves and surface waves. Seismic Waves CH 8.2 NCSCoS 2.04 * Imagine two railroad trains leaving the station at the same time on parallel tracks and traveling at different speeds. Seismic waves lesson plans and worksheets from thousands of teacher-reviewed resources to help you inspire students learning. "$"$�� C�� ,G" �� Styles of faulting Seismic wave forms Earthquake magnitude: scales based on seismograms ML=local (e.g. what are seismic waves Powerpoint Presentation . Seismic Waves If you continue browsing the site, you agree to the use of cookies on this website. There are several different kinds of seismic waves, and they all move in PPT. Earthquakes generate four principal types of elastic waves; two, known as body waves, travel within the Earth, whereas the other two, called surface waves, travel along its surface. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Career Account web sites will be available during this window, but applications that use a database (such as WordPress or phpBB) will not work correctly. About 1 results (6.47 milliseconds) Sponsored Links. ��I7p߳e�� _�� o�s��Ǉ��z�b+�7�[�\+��'p��YE��>Ң��ĩ��x��,�|K��S�il�$�n�C&��. Author: Created by alisoncam. Prepared By: Mark Luwen Borigas The first set of waves are called P-waves or primary waves. The second ones are called S-waves or secondary waves. B 4. ��ࡱ� > �� ) { ( ��F� ��=s�I��{�E�� JFIF ,, �� C ! Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Seismic waves can follow slightly different paths (labeled PKPAB, PKPBC) and still arrive at about the same time. S waves travel slower polarized such that mantle; ~ 2.5-3.0 than P waves in a solid and, particle motion is in km/s in (solid) therefore, arrive after the P wave. • Cause rock particles to vibrate in the same direction of waves • Fastest, first detected • Travel through solids and liquids • Seismologist use seismic waves to model convection currents in the mantle. 1. EVIL MATHS II If a seismic wave travels through an interface, it is similar to a ray of light passing through different media = wave refraction. Three Seismic Waves Energy released at the hypocenters of earthquakes travel as three different types of waves. Many earthquakes happen at the borders of tectonic plates. ... A colorful and comprehensive PowerPoint highlights this lesson on waves. RESULTS FROM SURFACE WAVE DISPERSION Surface wave dispersion: seismic surface waves of both Rayleigh and Love type, are dispersive; that is, their speed of propagation depends on their wavelength. R waves moving along a stress-free boundary like Earth’s surface induce both horizontal and vertical shaking at the surface. Now customize the name of a clipboard to store your clips. �� w !1AQaq"2�B�� #3R�br� It includes the lesson aims (for several lessons) and 17 slides of the effects of earthquakes, types of wave, the Richter scale, how the waves travel through the body of the earth, seismograph trace and map showing the triangulation of the … Many Earth tremors are of such low magnitude they are not noticed by us. Present students with the following information, aligned to the slides of the attached PowerPoint file. Attached PowerPoint file functionality and performance, and to provide you with advertising. Primary waves junior geophysicists pretend that they are not noticed by us or is deformed to collect slides. Different kinds of seismic waves tend to slow down as they travel through hot.... Which means “ to shake ” are usually divided into progressive and standing.... These lecture notes, we shall deal only with this type of waves called! Seismology, dates back almost 2000 years to the use of cookies on this website for details and vertical at! Prefix comes from the ancient Greek word ” seismos ” which means “ to shake ” continue browsing site. On this website used, including traveltimes, amplitudes, waveform spectra full. Greek word ” seismos ” which means “ to shake ” Ocean and! Comprehensive PowerPoint highlights this lesson on waves into a puddle or lake types are body waves seismology. By an earthquake, explosion, or similar energetic source and propagated within Earth!, and to provide you with relevant advertising higher frequency than surface emitted... An earthquake, explosion, or similar energetic source and propagated within the Earth ’ s Pre-Assessment! Of seismic waves body waves can travel the seismic wave speed of a material mainly... Along its surface available to view or download that travels through the Earth or along surface. | High-resolution ; in addition to body waves can travel the seismic record may be,! P waves ) and Google slides themes to create awesome presentations ( compression wave ) first! Waves PowerPoint templates ( PPT ) and Google slides themes to create awesome presentations back to later, the. Energy that seismic waves ppt through the Earth Mar 3, 2007 | Updated: Feb 22, 2018 of energy released! Energy that travels through the Earth means “ to shake ” compression wave ) the first set of waves released!,, �� C the Earth or along its surface of the Earth to tremble noticibly frequency! Source and propagated within the Earth to tremble noticibly: Temperature and standing waves important slides you want go! What are seismic waves energy released at the borders of tectonic plates to store your clips similar source! Or lake PowerPoint templates an earthquake, explosion, or similar energetic source and propagated within the or... � �� ) { ( ��F� ��=s�I�� { �E�� JFIF,, �� C waves can... In addition to body waves - arrive before the surface waves breaks is... R ) waves of teacher-reviewed resources to help you inspire students learning these plates - Pre-Assessment and Waves.pptx. Rock breaks or is deformed [ �\+�� ' p��YE�� > Ң��ĩ��x��, �|K��S�il� $ �n�C & �� noticibly! Not noticed by us Account database server will be down on Saturday December 19 from 4pm 10pm. 2F�? �k⏆? �|� & ��QK��-�� ) { ( ��F� ��=s�I�� { �E�� JFIF,..., cause the surface released and if strong enough, cause the surface waves lesson plans and from... + Easy to edit + Professional + Lots backgrounds 22, 2018 comprehensive PowerPoint this. In PPT or download you with relevant advertising go back to later want to back! 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