seismic waves ppt

Many Earth tremors are of such low magnitude they are not noticed by us. Progressive seismic waves propagate away from seismic sources. 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. In physics, waves are usually divided into progressive and standing waves. Three Seismic Waves Energy released at the hypocenters of earthquakes travel as three different types of waves. what are seismic waves Powerpoint Presentation . Records the movement of Earth in relation to a stationary mass on a rotating drum or magnetic tape 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. B 10. $4�%�&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz�� ? Seismic waves can follow slightly different paths (labeled PKPAB, PKPBC) and still arrive at about the same time. Grade 10 - Generosity. See our Privacy Policy and User Agreement for details. You can change your ad preferences anytime. 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. Preview. See our User Agreement and Privacy Policy. 1. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. There are several different kinds of seismic waves, and they all move in PPT. If you continue browsing the site, you agree to the use of cookies on this website. R waves moving along a stress-free boundary like Earth’s surface induce both horizontal and vertical shaking at the surface. Seismic waves lesson plans and worksheets from thousands of teacher-reviewed resources to help you inspire students learning. 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 … Styles of faulting Seismic wave forms Earthquake magnitude: scales based on seismograms ML=local (e.g. C 9. If you continue browsing the site, you agree to the use of cookies on this website. 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. Body waves(P and S-waves) Surface waves(Love and Rayleigh waves) Can be download for class presentation. Download what are seismic waves PPT for free. Prepared By: Mark Luwen Borigas The two major types are body waves (S and P waves) and surface waves. Now customize the name of a clipboard to store your clips. 3 9 customer reviews. B 4. 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. - 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. About 1 results (6.47 milliseconds) Sponsored Links. ��ࡱ� > �� ) { ( ��F� ��=s�I��{�E�� JFIF ,, �� C ! Body waves can travel Seismic waves are also of these two types. Seismographs are instruments that record 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. The seismic wave speed of a material depends mainly its upon: Temperature. You can think of these waves by picturing the ripples created when a stone is thrown into a puddle or lake. Seismic waves are also called . �� w !1AQaq"2�B�� #3R�br� The first set of waves are called P-waves or primary waves. Database Downtime. They are the energy that travels through the earth and recorded on seismographs. They are caused when rock breaks or is deformed. %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz�� • 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. Author: Created by alisoncam. Seismic CrystalGraphics brings you the world's biggest & best collection of seismic waves PowerPoint templates. Different components of the seismic record may be used, including traveltimes, amplitudes, waveform spectra, full waveforms or the entire waveﬁeld. Presentation Summary : They … When this happens, waves of energy are released and if strong enough, cause the surface of the Earth to tremble noticibly. Many earthquakes happen at the borders of tectonic plates. Earthquakes. `Types Seismic Waves Body waves - arrive before the surface waves emitted by an earthquake. Created: Mar 3, 2007 | Updated: Feb 22, 2018. Clipping is a handy way to collect important slides you want to go back to later. Waves generated by an earthquake are called seismic waves. These waves are of a higher frequency than surface waves. The two main types of waves are body waves and surface waves. Free + Easy to edit + Professional + Lots backgrounds. The P wave can move through solid rock and fluids, like water or the liquid layers of the earth. 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. Measure the interval (in … A 6. Though they arrive after body waves, it is surface waves that are almost entirely responsible for the damage … 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. D 2. ��%2F�?�k⏆?�|�&��QK��-��. Seismic wave, vibration generated by an earthquake, explosion, or similar energetic source and propagated within the Earth or along its surface. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 7ef08e-Y2E4M View 12 - Pre-Assessment and Seismic Waves.pptx from SCITECS 2018-2019 at Asia Pacific College. 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. Earth structure from seismic waves. Seismic waves tend to slow down as they travel through hot material. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Characteristics of each seismic waves. No public clipboards found for this slide. An example of a non-elastic wave is a . Seismic Waves. Seismic waves are mechanical vibrations that occur inside the Earth. Types `Seismic Waves Body waves - arrive before the surface waves emitted by an earthquake. 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. 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. 1. (slide 1; title slide) Ocean waves and surface waves both propagate from disturbances. Richter scale) - based on amplitude of waves with 1s period within 600 km of epicentre. B 3. Seismic Waves 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. Elastic Waves. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 6fea40-ODU3M We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. There is a large amount of geologic activity and movement along the borders of these plates. Download Seismic PowerPoint templates (ppt) and Google Slides themes to create awesome presentations. The study of earthquake waves, seismology, dates back almost 2000 years to the Chinese. "$"$�� C�� ,G" �� EVIL MATHS II If a seismic wave travels through an interface, it is similar to a ray of light passing through different media = wave refraction. At such an interface, the energy within an incident seismic wave is partitioned into transmitted and reflected waves. (Va�6�#U�Y��p͐ L��W��!�x�D�Ͱ��,��L�c}��V �2�ڸ[��X�і�5OMn��h�RE�&v��A�t��IE;v�F��?�|8�G��2��>)�B�c/$�+*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! Body Waves P Waves (compression wave) The first kind of body wave is the P wave or primary wave. 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. A 5. Types of Seismic Waves Seismic waves carry energy from an earthquake away from the focus, through Earth s interior, and across the surface. This is the fastest kind of seismic wave. 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. The study of seismic waves provides evidence for the internal structure of the Earth, which otherwise cannot be observed directly. shock wave. This resource includes 31 slides; - Mechanical WAVES; - Spring waves - Water waves - Sound waves - Sound revision - Seismic waves (Earthquake etc.) The Career Account database server will be down on Saturday December 19 from 4pm to 10pm. Looks like you’ve clipped this slide to already. Seismic waves powerpoint. In other words, the speed of propagation is … Displaying Powerpoint Presentation on what are seismic waves available to view or download. Surface waves(L-Waves) - are of a lower frequency than body waves, and are easily distinguished on a seismogram as a result. The second ones are called S-waves or secondary waves. Pressure. In these lecture notes, we shall deal only with this type of waves. �.�(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(�3��+� �=��ө%��}��Ǖ�c�^9��ڏƚ4+�x��|�n��,b��Y&3��H�M� � �!��\�7�~3|b�Ǆ5_i��z��wx. �� } !1AQa"q2��#B��R��$3br� A 8. Both types of body waves are non-dispersive (in purely elastic media). Module 2 The Earth’s Interior Pre-Assessment I. PPT | High-resolution; In addition to body waves, earthquakes also generate surface waves, typically Rayleigh (R) waves. A 7. The prefix comes from the ancient Greek word ”seismos” which means “to shake”. S waves travel slower polarized such that mantle; ~ 2.5-3.0 than P waves in a solid and, particle motion is in km/s in (solid) therefore, arrive after the P wave. ��I7p߳e�� _�� o�s��Ǉ��z�b+�7�[�\+��'p��YE��>Ң��ĩ��x��,�|K��S�il�$�n�C&��. ... A colorful and comprehensive PowerPoint highlights this lesson on waves. 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