PPT-Worksheet – Earthquake P-wave & S-wave Travel Time Chart Tutorial

Example 1 How long does it take a Pwave to travel 4000 km 1 If you are asked the travel time of a Pwave or Swave for a given epicenter distance a Go to the epicenter distance . (1) . Geometrically. : . angles or vectors . describe . the fault orientation and slip . direction. .. (2) . Graphically. : . focal mechanisms . describe two possible fault orientations and slip directions.. in Earth’s Crust. Evidence of Crustal Changes. Original Horizontality. : sedimentary rocks form in horizontal layers parallel to Earth’s surface.. Most strata found in positions other than horizontal are thought to be deformed by crustal movement. . Hubenthal. IRIS Consortium. Beyond the slinky. : Sequencing activities, earthquake visualizations, and demonstrations to enhance student learning of seismic waves. Let’s Compare. Wave fronts to ray paths – . Earthquakes are very difficult to predict.. Scientists understand why they happen, but it is very difficult to predict their . timing, exact location, and . strength. Pressure. build-up happens underground, over very long periods of . – . Earthquake P-wave & S-wave Travel Time Chart Tutorial. Example 1. : . How long does it take a P-wave to travel 4,000 km? . 1) If . you are asked the . travel time. of a P-wave or S-wave for a given epicenter distance:. Danny Hertel. EPS 109. Prof. . Militzer. Background/Method. As seismic waves travel through different mediums in the earth, the different mediums create different wave velocities. With geophones, the amplitude of the wave response can be measured at the surface and overlaid to create travel-time curves that tell what’s underneath.. That was the year* that Lisbon town. Saw the earth opened up and gulp her down.. . (*1755). - Oliver Wendell Holmes. (The Deacon’s Masterpiece). Earthquakes . Webpage for course (daytime). 24 . Feb . 2017. © A.R. Lowry . 2017. Last time: . Ray Theory. • Rays follow . Snell’s . Law. :. where . . is . angle of incidence. • From Snell. ’. s Law, the . ray parameter . (where . Uzcátegui. Guillermo Acosta-. Marum. IEEE Communications Magazine ,May 2009. 1. Presenter – Renato Iida. Outline. Introduction. WAVE SYSTEM ARCHITECTURE. PHY and MAC Layers. Multichannel Operation. True or False. 1. A . wave transports energy but not matter.. True or False. 2. As . the frequency of sound waves increases, the wavelength of the sound waves decreases.. True or False. 3. Sound . waves cannot travel through solids. Ex. In the ocean, waves travel across but the water only oscillates up and down returning to their original position. . Pulse - a single wave from a disturbance. Ex. Throwing a rock in water (a pulse travels in all directions from the point of contact). An . earthquake. is a sudden motion or trembling of the Earth caused by the abrupt release of energy that is stored in rocks. . Modern . geologists know that most earthquakes occur along plate boundaries, where huge tectonic plates separate, converge, or slip past one another. What is the difference between the epicenter of an earthquake and the focus of an earthquake?. List processes involved in plate tectonics. Convection currents in the mantle (. temperature and density differences) . Part 1. Seismic Waves and Interior of the Earth. The behaviour of seismic waves in the different layers of the earth provides the most authentic evidence about the composition and structure of the earth. The different types of waves, generated during the occurrence of an earthquake, are generally divided into three broad categories: .