�� � ���� ) { ( ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������F� ����=s�I����{�E����� JFIF ,, �� C ! Module 2 The Earth’s Interior Pre-Assessment I. Seismic wave, vibration generated by an earthquake, explosion, or similar energetic source and propagated within the Earth or along its surface. 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. Different components of the seismic record may be used, including traveltimes, amplitudes, waveform spectra, full waveforms or the entire wavefield. There are several different kinds of seismic waves, and they all move in PPT. $4�%�&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz�������������������������������������������������������������������������� ? Seismic waves powerpoint. Though they arrive after body waves, it is surface waves that are almost entirely responsible for the damage … 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 … 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. The seismic wave speed of a material depends mainly its upon: Temperature. elastic waves, because they deform the Earth elastically - the rock returns to its original shape and position after the seismic wave passes through. Presentation Summary : They … 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. Earth structure from seismic waves. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 7ef08e-Y2E4M The prefix comes from the ancient Greek word ”seismos” which means “to shake”. The two major types are body waves (S and P waves) and surface waves. The second ones are called S-waves or secondary waves. An example of a non-elastic wave is a . In other words, the speed of propagation is … Surface waves(L-Waves) - are of a lower frequency than body waves, and are easily distinguished on a seismogram as a result. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. They are caused when rock breaks or is deformed. 3 9 customer reviews. B 4. 1. In physics, waves are usually divided into progressive and standing waves. A 7. 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. %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz��������������������������������������������������������������������������� Elastic Waves. Presentation Title: What Are Seismic Waves? Seismic waves are also called . (slide 1; title slide) Ocean waves and surface waves both propagate from disturbances. 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. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Records the movement of Earth in relation to a stationary mass on a rotating drum or magnetic tape This is the fastest kind of seismic wave. See our Privacy Policy and User Agreement for details. Free + Easy to edit + Professional + Lots backgrounds. 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. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Richter scale) - based on amplitude of waves with 1s period within 600 km of epicentre. "$"$�� C�� ,G" �� ��I7p߳e��� �_�� ��o�s��LJ��z�b+�7�[�\+���'p��YE���>Ң���ĩ��x����,�|K��S�il�$�n�C&��. Characteristics of each seismic waves. Measure the interval (in … �� � } !1AQa"q2���#B��R��$3br� There is a large amount of geologic activity and movement along the borders of these plates. In these lecture notes, we shall deal only with this type of waves. See our User Agreement and Privacy Policy. Seismic Preview. Many Earth tremors are of such low magnitude they are not noticed by us. Waves generated by an earthquake are called seismic waves. Database Downtime. 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: 6fea40-ODU3M 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. Displaying Powerpoint Presentation on what are seismic waves available to view or download. Seismic waves lesson plans and worksheets from thousands of teacher-reviewed resources to help you inspire students learning. When this happens, waves of energy are released and if strong enough, cause the surface of the Earth to tremble noticibly. A 6. Body waves can travel Prepared By: Mark Luwen Borigas 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. A 8. 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. - 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. These waves are of a higher frequency than surface 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. If you continue browsing the site, you agree to the use of cookies on this website. You can think of these waves by picturing the ripples created when a stone is thrown into a puddle or lake. 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. Body Waves P Waves (compression wave) The first kind of body wave is the P wave or primary wave. Seismic waves can follow slightly different paths (labeled PKPAB, PKPBC) and still arrive at about the same time. B 3. The study of earthquake waves, seismology, dates back almost 2000 years to the Chinese. Looks like you’ve clipped this slide to already. C 9. A 5. 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. Types `Seismic Waves Body waves - arrive before the surface waves emitted by an earthquake. �.�(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(�3���+� ž�=������ө%�����}�������Ǖ�c�^9���ڏƚ4+�x��|�n���,b��Y&3����H�M� � �!�����\�7�~3|b�DŽ5_i�������z���wx. No public clipboards found for this slide. Styles of faulting Seismic wave forms Earthquake magnitude: scales based on seismograms ML=local (e.g. (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! 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