PPT-Measureable seismic properties

Seismic velocities P amp S Relationship to elastic moduli Seismic anisotropy directional variation in seismic velocity Seismic Attenuation 1 Q p amp 1Q s What is seismic attenuation. Douglas Wiens. Department of Earth & Planetary Sciences. Washington University in Saint Louis. Gung & . Romanowicz. . [2004]. Pozgay. , Wiens, et al. . [2009]. Outline . What is seismic attenuation?. Presentation Outline. Location of Bhutan . Background . About Seismology Division. Ongoing programs and projects. National Seismic monitoring system. Systematic Data Merge System. Future Plans. Lo. Seismic Instruments. and Data Acquisition Systems at MSSP. Waqas. Ali, Jr. Engineer. Micro Seismic Studies Programme. . . Government of Pakistan. Contents. Introduction. MSSP Seismic Network—Map. Earthquake. – shaking and trebling that results from the movement of rock beneath Earth’s surface.. Plate movement causes earthquakes from stress and faults in Earth’s crust. When the rock breaks earthquakes happen. November 2012 Istanbul, Turkey. C. . Neagoe. , L.M. . Manea. and C. Ionescu. National Institute for Earth Physics, . Magurele-Ilfov. , Romania. . In . February 1977, the Department of Seismology from the Romanian Geophysical and Geological Institute (GGI) together with the Laboratory of Geodynamics of the Romanian Academy formed the Centre of the Earth Physics (CEP). In 1994, after a governmental decision, CEP was transformed in the National Institute for Earth Physics (NIEP). NIEP is coordinated by the Romanian Ministry of Education, Research, Youth and Sport. . 3D seismic reflection image of the . Nankai. Subduction zone, Japan. Seismic Sources: Land Surveys. Many options! Hammer, weight-drop, dynamite, . vibroseis. . What frequencies are needed?. What energy level is needed (what distances do you need to cover)?. Altai-. Sayan. Branch of Geophysical Survey Siberian Branch of the RAS. Geophysical Survey of . Siberian Branch of the RAS. Three seismological branches with regional scale seismic networks:. Altay-. Birhanu. . Abera. Managing . Data from . Seismic Networks. Pretoria. , . South Africa. 20 Aug . 2017. Outline. Introduction. M. ap of the current . ESSN . network. Data Acquisition and processing. D. what we can’t feel. Celeste Labedz. Massachusetts Institute of Technology. Incorporated Research Institutions for Seismology. Summer Internship 2014. What can ambient seismic. noise give us?. Clues about the inside of the earth. Yichuan Wang. 1. Purpose of Seismic Processing. 2. Seismic Processing Sequence. 3. Summary. Outline. 1. Purpose of Seismic Processing. To suppress noise in the field data and enhance the reflection. s. 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: . Alhakeem A . 1. , . Almubarak. H . 1. , Liu K . 1. , Al-. Bazzaz. W . 2 . 1. Missouri University of Science and Technology, Rolla, Missouri, United States, . . 2. Kuwait Institute for Scientific Research, Ahmadi, Kuwait. Part 2: Speed of sound, waves, and bedrock. Image credit: J. Louie, University of Nevada-Reno. Outline. Speed of sound. Waves. Bedrock. Urban and wildland environments. Importance for human activities. (subject 3.2). Peter Novotny. PACMAN . meeting, . CERN, 7 October 2014 . What is . seismic sensor?. . Instrument which measures . ground . motion. .. (Not only earthquakes!). Ground Motion in frequency domain.