![]() ![]() Using the Seismic Waves Program to Illustrate Wave Propogation Through the Earth. ![]() You can learn more about Seismic Waves here. The original Seismic Waves runs on MS-Windows on PCs ( Download. When these waves react with rocks on the earth’s surface, they produce surface waves. The body waves originate from inside the earth and travel through different layers of the earth. This classification is based on the place of travel of the seismic waves. This web-based Seismic Waves Viewer mirros the functionality of the original Seismic Waves tool produced through a collaboration between Alan Jones & Jeff Baker ( Binghamton University) and IRIS EPO. Seismic Waves are broadly classified into two types, viz. Earthquake waves are predominantly of two kinds: body and surface waves. These waves can travel all over the Earth and are studied on seismographs. Users will also observe that no direct S waves arrive beyond 104 degrees. The energy waves caused by Earthquakes are called seismic waves. This suggests the presence of a lower velocity material, Earth’s outer core. Users will see that between approximately 104 and 140 degrees away from the epicenter, direct P waves do not arrive as they are refracted away from this zone. The tool also illustrates how seismic waves inform our current understanding of Earth’s interior structure. Stations farther away record the arrival of these waves after a few minutes, and the times between the arrivals are greater. Stations close to the earthquake record strong P, S, and Surface waves in quick succession just after the earthquake occurred. Shear waves (S waves), for example, travel through the Earth at approximately one-half the speed of compression waves (P waves). By carefully examining these seismic wave fronts and their propagation, the Seismic Waves tool illustrates how earthquakes can provide evidence that allows us to infer Earth’s interior structure. Easy-to-use controls speed-up, slow-down, or reverse the wave propagation. Seismic Waves is a browser-based tool to visualize the propagation of seismic waves from historic earthquakes through Earth’s interior and around its surface.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |