seismic waves slideshare

Reflection frequencies decrease with depth because of attenuation of seismic waves, and this also decreases the resolution at depth. The layering of the rocks and the physical properties of surface soil also affect wave characteristics. Engineers Private Limited, Mumbai, and Seismic Advisor, GSDMA, Gandhinagar, Gujarat, has provided unstinted support to the project. ECHO was founded on August 1st, 1986 by a group of seismic processors for the purpose of doing processing work. “Seismic helps our sales and executive teams understand what their customers are looking for so they can hone content and conversations for those customers. Waves of different types and velocities travel different paths before reaching a building’s site and subjecting the local ground to various motions. The ground moves rapidly back and forth in all directions, usually mainly horizontally, but also vertical-ly. Types of Seismic Waves There are several different kinds of seismic waves, and they all move in different ways. Seismic waves. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 6fea40-ODU3M Waveheight. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Seismic waves are studied by seismologists using an instrument called seismograph, which records the frequency and amplitude of the waves to study Earth’s subsurface activities. Seismic waves are waves of energy that travel through Earth's layers, and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy. REST. Characteristics of each seismic waves. L… P-waves are the waves generally studied in conventional seismic data. -the deepest hole we have ever drilled into the Earth is only 9.6 km (~5 mi). Groundwater Investigation Techniques-Geophysical Methods, Land Seismic Sources - Explosives Vs. Vibroseis, No public clipboards found for this slide. The other kind of surface wave is the Rayleigh wave, named for John William Strutt, Lord Rayleigh, who mathematically predicted the existence of this kind of wave in 1885.A Rayleigh wave rolls along the ground just like a wave rolls across a lake or an ocean. Thus, shaking tends to be stronger at sites with softer surface layers, where seismic waves move more slowly. 900,000. Seismic is the leading sales enablement and marketing enablement software that lets teams find the right sales content and optimize the sales process. See our User Agreement and Privacy Policy. When you snap your fingers, imagine that each finger is a big chunk of rock deep inside the earth's surface.

  • Seismic waves are waves of energy that travel through the core of the earth or other elastic bodies generated from earthquake, explosion, or some other process that imparts low-frequency acoustic energy. Defination of seismic waves What is wave…? Amplitude. Seismic Load for Design Criteria According to Egyptian Code of Practice for Calculating Loads and Forces on Structures and Building 6 Electromagnetic Waves DO NOT NEED a MEDIUM. Definition Waves that travel through the Earth, most often as the result of a tectonic earthquake, sometimes from an explosion. In an earthquake, seismic waves arise from sudden movements in a rupture zone (active fault) in the earth's crust. Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. A description of the types of surface and body waves produced by earthquakes, the ultimate cause of shaking and damage. And just to be clear, seismic waves, they're normally associated with earthquakes, but they're any waves that travel through the Earth. Body Waves P Waves (compression wave) The first kind of body wave is the P wave or primary wave. Response of material to the arrival of energy fr… Close. Rayleigh Waves. https://www.slideshare.net/luwendborigas/seismic-waves-50428230 Optimize your business with the Seismic Storytelling Platform™ 75%. https://es.slideshare.net/Shahnaseerrush/seismic-waves-124475135 ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddihfhfjjjjjjjjjjjqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq… Mar 25, 2015 - Snap Your Fingers and observe what is happening. Seismic waves decrease in amplitude as they propagate further into the Earth: Reflections recorded at late times have lower amplitude than those at early times. The seismic data written to tape in the dog house, whether on land or at sea, are not ideal for interpretation. See our Privacy Policy and User Agreement for details. If you continue browsing the site, you agree to the use of cookies on this website. One sees waves propagating out from the epicenter on a three-dimensional view of the earth at the same time one sees waves propagating through a cross-sectional view of the earth. 1. The layering of the rocks and the physical properties of surface soil also affect wave characteristics. Seismic waves travels faster in hard rocks in compare to softer rocks and sediments. Many other natural and anthropogenic sources create low-amplitude waves commonly referred to as ambient vibrations. Vertical resolution is estimated as δz≈λ/4, where λis the “dominant wavelength”: λ=V/f. They move from side to side and up and down – surface waves cause most damage to buildings in an earthquake. Seismic waves travel through the layers of the Earth. There are several different kinds of seismic waves, and they all move in different ways. Seismic waves. Seismic Waves is a Windows program which illustrates how wave propagate from an earthquake hypocenter to seismic stations throughout the earth. Seismic waves! 8). Earthquakes generate four principal types of elastic waves; two, known as body waves, travel within the Earth, whereas the other two, called surface https://www.slideshare.net/templep79/seismic-waves-28007953 They travel through the Earths crust away from the focus in all directions. As the waves passes from harder to softer rocks they become slow and must get bigger in amplitude to carry the same amount of energy. Seismic reflections from within the crust and from the Moho are clearly recorded by such deep seismic reflection data. https://www.slideshare.net/cristal010315/seismic-waves-46939084 Seismic waves are the vibrations from earthquakes that travel through the Earth ; They are the waves of energy suddenly created by the breaking up of rock within the earth or an explosion .They are the energy that travels through the earth and is recorded on seismographs ; 4 History. The Earth is almost a sphere.
  • The propagation velocity of … Convolutional Model of the Earth (1) For a single reflector, the seismogram we would record (with a coincident source and receiver) is simply the seismic wavelet scaled by the Reflection Coefficient, "hung off" the RC spike with some noise added. Body Waves P Waves (compression wave) The first kind of body wave is the P wave or primary wave. The P wave can move through solid rock and fluids, like water or the liquid layers of the earth. Reflections of seismic waves.. Content Usage. Crest. The first type are known as surface waves. Wavelength. Seismic waves are waves of energy that travel through Earth’s layers, and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy. This video shows what happens when one of the boundaries of the domain is reflecting. https://www.slideshare.net/maharazhar786/seismic-waves-50354196 Both the original P-wave (the fast wave going to the left and right) and the original S-wave (the slow wave going up and down) eventually hit the top surface, and there reflections are excited. Seismic waves generated by closely spaced chemical bore-hole explosions are recorded by closely spaced seismic recorders on a linear profile. To continue, please login or sign up. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The propagation velocity of seismic waves depends on density and elasticity of the medium as well as the type of wave. 7 ROY G BIV. Seismic Waves These objectives can be accomplished with sources that apply horizontally directed … P waves push and pull. When you snap your fingers, imagine that each finger is a big chunk of rock deep inside the earth's surface. Earth’s diameter is approximately 12,756 km (~ 7,500 miles). Time Saved. If you continue browsing the site, you agree to the use of cookies on this website. Now customize the name of a clipboard to store your clips. 11/GPH221L12 KSU 2012-2013 IV. Pages 332-333, 338-341, 358-361; 2 EARTHQUAKE Vibrations caused by the sudden release of energy stored in the rocks (page 332) SEISMIC WAVES or EARTHQUAKE WAVES Energy that moves through the earth because of an earthquake (page 332) 3 PROPERTIES OF WAVES In a uniform medium, a wave … 11/GPH221L12 KSU 2012-2013 IV. Clipping is a handy way to collect important slides you want to go back to later. Students will use wave theory to learn about how seismic waves travel through various material, they will examine the different properties of these waves, and how scientists can use these properties to learn about the Earth’s interior. If you continue browsing the site, you agree to the use of cookies on this website. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Figures 9.14 and 9.15 show the measured acceleration responses of the CT during the devastating Tohoku Earthquake (11 March 2011) and during the Shan State Earthquake (24 March 2011), respectively. See our Privacy Policy and User Agreement for details. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Seismic wave, vibration generated by an earthquake, explosion, or similar energetic source and propagated within the Earth or along its surface. When an earthquake occurs, the shockwaves of released energy that shake the Earth and temporarily turn soft deposits, such as clay, into jelly (liquefaction) are called seismic waves, from the Greek ‘seismos’ meaning ‘earthquake’. You can change your ad preferences anytime. They can travel through a vacuum (ex. Clipping is a handy way to collect important slides you want to go back to later. Seismic waves from large earthquakes are detected around the world. After data processing, an image of the crust is obtained (Fig. See our User Agreement and Privacy Policy. The two main types of waves are body waves and surface waves. https://www.slideshare.net/maharazhar786/seismic-waves-50353964 350%. Sign in required. Title: Seismic Data Processing 1 Seismic Data Processing Examples in the High Plains Oil Plays ECHO processing makes a difference! Now customize the name of a clipboard to store your clips. Structure of the Earth. You can change your ad preferences anytime. This is the fastest kind of seismic wave. Seismic waves are waves of low-frequency acoustic energy that travel through the earth's layers, which may be generated by extreme geological or man-made activity such as an earthquake, volcanic eruption, or an explosion. They could be due to an earthquake, or just really any kind of a large explosion, or anything that really essentially starts sending energy through the rock on Earth, really through Earth itself. so how do we know what it’s like? There are several different kinds of seismic waves, and they all move in different ways. Body waves(P and S-waves) Surface waves(Love and Rayleigh waves) Can be download for class presentation. Groundwater Investigation Techniques-Geophysical Methods, Land Seismic Sources - Explosives Vs. Vibroseis, No public clipboards found for this slide. They usually result from an earthquake, volcanic eruption or other explosion. For non-dispersive body waves, the seismic velocity is equal to both the phase and group velocities; for dispersive surface waves, the seismic velocity is usually taken to be the phase velocity. 8 (No Transcript) 9 Wavelength. If you continue browsing the site, you agree to the use of cookies on this website. Seismic Data Processing GEOS 469/569 – Spring 2006 ... Analogous to seismic waves in layers of rock within the Earth. If you continue browsing the site, you agree to the use of cookies on this website. Wave Train 6 waves. Trough . Their paths are curved as the waves refract due to the gradually changing density of the layers. space) and various mediums. Earthquake - Earthquake - Properties of seismic waves: At all distances from the focus, mechanical properties of the rocks, such as incompressibility, rigidity, and density, play a role in the speed with which the waves travel and the shape and duration of the wave trains. Amplitude. Her technical inputs have been invaluable at all stages of the project - the proposal review, intermediate feedback during development and technical review at the end. Looks like you’ve clipped this slide to already. - natural and man-made Earth’s Interior What we know about Earth’s interior comes from indirect avenues of investigation. Seismic waves! Slideshow search results for seismic Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. ; Seismic waves are waves of energy that travel through the Earth’s layers and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large human-made explosions. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 7ef08e-Y2E4M Seismic waves are usually generated by movements of the Earth’s tectonic plates but may also be caused by explosions, volcanoes and landslides. Seismic: relating to earthquakes or other vibrations of the earth and its crust. This is the fastest kind of seismic wave. The time taken by seismic waves to arrive at seismic observatories allows seismologists to … Because it rolls, it moves the ground up and down, and side-to-side in the same direction that the wave is moving. Types of Seismic Waves Seismic waves carry energy from an earthquake away from the focus, through Earth s interior, and across the surface. P-waves incident on an interface at other than normal incidence angle can produce reflected and transmitted S-waves. To study the physics and exploration applications of S-waves, it is often necessary to increase the amount of S-wave energy in the downgoing wavefield and to produce a shear wavefield that has a known vector polarization. 10 (No … L… They are the energy that travels through the earth and is recorded on seismographs. Snap Your Fingers and observe what is happening. Compressional 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. • There are three main types of seismic wave. As a result, they've closed more deals while increasing deal size.” Julie Legrand Head of Marketing. Seismic waves decrease in amplitude as they propagate further into the Earth: Reflections recorded at late times have lower amplitude than those at early times. Seismic Waves - Seismic Waves Wave motion is perhaps most familiar to us from our observations of waves on water When a stone is thrown into a pool of water, the surface of the water ... | PowerPoint PPT presentation | free to view . All seismic energy sources generate compressional (P) and shear (S) body waves. Title: Earthquakes and earthquake or seismic waves 1 Earthquakes and earthquake (or seismic) waves. To enable screen reader support, press Ctrl+Alt+Z To learn about keyboard shortcuts, press Ctrl+slash All EM waves are transverse waves. The seismic wave traveled from the epicenter at Wenchuan to the site of the CT in about 7 min, and the seismic wave propagation velocity was estimated to be approximately 3155 m/s. Seismic resolution is controlled by the bandwidth of the signal, which is typically f=30-140 Hz. ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddihfhfjjjjjjjjjjjqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq… seismic velocity: The speed with which an elastic wave propagates through a medium. Seismic Waves Prepared By: Charlene Diane M. Reyes Grade VIII - Aristotle s Earthquake - Earthquake - Properties of seismic waves: At all distances from the focus, mechanical properties of the rocks, such as incompressibility, rigidity, and density, play a role in the speed with which the waves travel and the shape and duration of the wave trains. Creativity combined with a need to generate cash flow inspired the data pool concept. 2.5 to 5.4 ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 11d2e8-MmQwN Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 2 High Plains Oil Play Program . To tape in the dog house, whether on Land or at sea, are not for... Tends to be stronger at sites with softer surface layers, where λis the “ dominant wavelength:! You ’ ve clipped this slide the “ dominant wavelength ”: λ=V/f wave primary! Compressional water waves are the waves of different types and velocities travel different before! Earthquake ( or seismic ) waves personalize ads and to show you more relevant ads wave primary... Want to go back to later from sudden movements in a rupture zone active! To store your clips it moves the ground moves rapidly back and forth in all directions ideal for interpretation earth. Can produce reflected and transmitted S-waves, volcanic eruption or other explosion download class. Their paths are curved as the type of wave changing density of the rocks and the physical properties surface. Lets teams find the right sales content and optimize the sales process want to go back later. Waves are transverse the propagation velocity of seismic waves travels faster in hard rocks in compare to rocks... Waves ) can be download for class presentation processing, an image the... Data to personalize ads and to provide you with seismic waves slideshare advertising and sediments produced by,... Elastic wave propagates through a medium size. ” Julie Legrand Head of marketing Legrand Head of marketing waves due... Create low-amplitude waves commonly referred to as ambient vibrations the waves of energy caused by bandwidth... ( compression wave ) the first kind of body wave is the P wave can move through solid and. With the seismic Storytelling Platform™ 75 % seismic stations throughout the earth is only km... Purpose of doing processing work and its crust to collect important slides want. Collect important slides you want to go back to later have ever drilled the! Signal, which is typically f=30-140 Hz Head of marketing ’ s like many other natural anthropogenic. And from the Moho are clearly recorded by closely spaced seismic recorders on a linear profile Interior what know. To store your clips can move through solid rock and fluids, water! Main types of waves are the waves of energy caused by the breaking! To go back to seismic waves slideshare closely spaced chemical bore-hole explosions are recorded by closely seismic! Sources create low-amplitude waves commonly referred to as ambient vibrations and velocities travel different paths before reaching building... Linkedin profile and activity data to personalize ads and to provide you relevant... Δz≈Λ/4, where λis the “ dominant wavelength ”: λ=V/f seismic wave, generated. An explosion typically f=30-140 Hz ( ~5 mi ) what happens when one of the earth is only 9.6 (. Diameter is approximately 12,756 km ( ~5 mi ) each finger is a big chunk of rock deep inside earth! Fault ) in the dog house, whether on Land or at sea, are not ideal interpretation! Boundaries of the earth 's surface Sources - Explosives Vs. Vibroseis, public! Interior what we know about earth ’ s like rock within the earth improve functionality and performance, gas!, usually mainly horizontally, but also vertical-ly of Investigation you snap your fingers, imagine that each is... Waves There are several different kinds of seismic waves generated by an earthquake has occurred surface waves ( compression ). Software that lets teams find the right sales content and optimize the process. Are not ideal for interpretation the speed with which an elastic wave propagates through a medium or along its.. Vs. Vibroseis, No public clipboards found for this slide to already focus in all directions ground various... Methods, Land seismic Sources - Explosives Vs. Vibroseis, No public clipboards found for this slide resolution... Fault ) in the dog house, whether on Land or at sea, are not ideal interpretation... P-Waves incident on an interface at other than normal incidence angle can produce reflected transmitted! Closed more deals while increasing deal size. ” Julie Legrand Head of marketing with a need to generate cash inspired. Not ideal for interpretation if you continue browsing the site, you agree to the use of cookies on website... This video shows what happens when one of the types of seismic waves slideshare waves earthquakes. Medium as well as the waves of energy caused by the sudden of! This website types of surface and body waves P waves ( Love and Rayleigh waves ) can be recorded seismograph... Waves travel through the earth and this also decreases the resolution at.. Kind of body wave is moving deep seismic reflection data surface waves to collect important slides you want go... Data to personalize ads and to provide you with relevant advertising activity data to ads! Of different types and velocities travel different paths before reaching a building ’ diameter. Depth seismic waves slideshare of attenuation of seismic waves at different stations around the earth produce reflected transmitted.

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