Cleanup date January 2008 Seismology IPA en sa z m l d i is the scientific study of earthquake s and the propagation of Linear elasticity Elastic wave elastic wave s through the Earth or through other planet like bodies. The field also includes studies of earthquake effects, such as tsunamis as well as diverse seismic sources such as volcanic, tectonic, oceanic, atmospheric, and artificial processes such as explosions . A related field that uses geology to infer information regarding past earthquakes is paleoseismology . A recording of earth motion as a function of time is called a seismogram . Seismic waves Main Seismic wave Seismic waves are elastic waves that propagate in solid or fluid materials. Because seismic waves commonly propagate efficiently and interact with internal structure, they provide the highest resolution noninvasive methods for studying Earth s interior. Solids support two fundamental types of seismic waves P wave s, S wave s both body waves . A seismic wave field may also contain interface waves, such as surface waves. The two basic kinds of surface waves Rayleigh wave Rayleigh and Love wave Love which travel along a solid air interface. Interface waves can be theoretically explained in terms of interacting P and or S waves. Image Seismic wave prop mine.gif thumb ... and magnetotellurics . Controlled source seismology has been used to map salt dome s, faults ... in the science of seismology include the 1857 Basilicata earthquake , 1906 San Francisco ..., including the VAN method . Such methods have yet to be generally accepted in the seismology community ... Sciences in New Zealand Helioseismology Incorporated Research Institutions for Seismology The IRIS Consortium Isoseismal map Plate tectonics Reflection seismology Geophysical migration Seismic ... pp. Category Seismology Category Earthquake engineering ar be be x old ... pl Sejsmologia pt Sismologia ro Seismologie ru simple Seismology sk Seizmol gia sl ... more details
Slowness s is a quantity introduced in Seismology which is the Multiplicative inverse reciprocal of velocity . Thus travel time of a wave is nothing but the distance that the wave travels times the slowness of the medium in seismology, it refers to different layers of Earth exhibiting different Density densities Thus, Slowness 1 Velocity If we divide the path followed by the ray into N segments numbered i 1, 2 .. N the total travel time of the wave is si xi Therefore, the residual travel time is due to departures in slowness experienced by the wave along the raypath. References Reflist External links http bssa.geoscienceworld.org cgi content abstract 74 1 97 http books.google.co.uk books?id Kf8fyvRd280C&pg PA137&lpg PA137&dq slowness seismology&source bl&ots orBwDYU2YU&sig NNs9E1jza05awOlqOGyKwp52GDA&hl en&ei 4uJ8S6 hGoX20gT8uaTLBQ&sa X&oi book result&ct result&resnum 5&ved 0CBYQ6AEwBA v onepage&q slowness 20seismology&f false DEFAULTSORT Slowness Seismology Category Seismology ... more details
Coronal seismology is a way of studying the plasma physics plasma of the Sun s corona with the use of magnetohydrodynamics magnetohydrodynamic MHD wave s and oscillation s. Magnetohydrodynamics studies the dynamics mechanics dynamics of electrical conduction electrically conducting fluid s in this case the fluid is the coronal plasma. Observed properties of the waves e.g. frequency period , wavelength , amplitude , temporal and spatial signatures Clarify date November 2009 , characteristic scenarios of the wave evolution Clarify date November 2009 , combined with a theoretical modelling of the wave phenomena dispersion relation s, evolutionary equations, etc. , reveal physical parameters of the corona which are not open to direct observations, such as the coronal magnetic field strength and Alfv n wave Alfv n velocity Alfv n velocity ref name Nakariakov2001 cite journal author Nakariakov ... 5429 ref Originally, the method of MHD coronal seismology was suggested by Y. Uchida in 1970 ref cite ... disturbances journal PASJ volume 22 pages 341 364 year 1970 ref for global seismology standing ... ref for local seismology propagating waves , but was not practically applied until the late 90s due to a lack of necessary observational resolution. Philosophically, coronal seismology is similar to the Earth s seismology , helioseismology , and MHD spectroscopy of laboratory plasma devices. In all these approaches, waves of various kind are used to probe a medium. Image Coronal seismology simple.png thumb A scheme of the method of MHD coronal seismology. The theoretical foundation of coronal seismology ... and fibrils see solar prominence , and this list is continuously updated. Coronal seismology ... seismology. Conclusions The potential of coronal seismology in the estimation of the coronal magnetic ...?id 15F1&style feature Roberts, B., Nakariakov, V.M., Coronal seismology a new science , Frontiers ... seismology Plasma diagnostics using MHD waves Category Sun Category Solar phenomena Category ... more details
Image Seg y picture.gif thumb right 300px Seismic reflection data Reflection seismology or seismic reflection is a method of exploration geophysics that uses the principles of seismology to estimate the properties ... vibrator, commonly known by the trademark name Vibroseis. Reflection seismology is similar to sonar ... methods, reflection seismology may be seen as a type of inverse problem . That is, given a set of data ... of reflection seismology, the experimental data are recorded seismograms, and the desired result ... of inverse problems, the results obtained from reflection seismology are usually not unique more ... section date December 2010 Reflection seismology is extensively used in exploration for hydrocarbon ... geology geothermal energy. Reflection seismology is also used for basic research into the nature and origin of the rock geology rock s making up the Earth s Crust geology crust . Reflection Seismology ... similar to reflection seismology which uses electromagnetic instead of elastic waves is known as Ground ... deep . Hydrocarbon exploration Reflection seismology, or seismic as it is more commonly referred ... seismology in studies of tectonics and the Earth s crust was pioneered by groups such as the Consortium ... using the seismic method in 1924. ref Sheriff, R. E., and Geldart, L. P., 1995, Exploration Seismology ... . Many other companies using reflection seismology in hydrocarbon exploration, hydrology , engineering ... and processed seismic data using their own personnel and technology. Reflection seismology has ... topics in reflection seismology. Most require some knowledge of mathematics, geology, and or physics ... Seismology publisher Society of Exploration Geophysicists isbn 1 56080 129 8 Cite book last ... in reflection seismology may be found particularly in books and journals of the Society of Exploration ... Salvatori http gst.seg.org TL 2001 05 TidBits.shtml History of reflection seismology in Oklahoma ... http slim.eos.ubc.ca Reflection Seismology Literature at Seismic Laboratory for Imaging and Modeling ... more details
Information Description The method of MHD coronal seismology Source http www.livingreviews.org lrsp 2005 3 Date 2005 07 05 Author V.M. Nakariakov and E. Verwichte Permission We, the creators of this work, hereby release it into the public domain. GFDL self migration relicense ... more details
Infobox Government agency agency name Philippine Institute of Volcanology and Seismology nativename Suriang Pilipino ng Bulkanolohiya at Sesmolohiya nativename a nativename r logo Phivolcslogo.svg 200px logo width logo caption seal seal width seal caption formed September 17, 1982 preceding1 preceding2 etc. dissolved superseding Volcanoes and Earthquakes jurisdiction headquarters C.P. Garcia Avenue, UP Diliman , Quezon City latd latm lats latNS longd longm longs longEW region code employees budget minister1 name minister1 pfo minister2 name minister2 pfo etc. chief1 name Renato Solidum chief1 position Director chief2 name chief2 position etc. parent agency Department of Science and Technology Philippines Department of Science and Technology child1 agency child2 agency website URL www.phivolcs.dost.gov.ph footnotes The Philippine Institute of Volcanology and Seismology lang fil Suriang Pilipino ng Bulkanolohiya at Sesmolohiya , abbreviated as PHIVOLCS is a Philippines Philippine national institution dedicated to provide information on the activities of volcano es, earthquake s and tsunami s, as well as other specialized information and services primarily for the protection of life and property and in support of economic, productivity and sustainable development. It is one of the service ... Institute of Volcanology and Seismology or PHILVOCS. NSTA, the umbrella department for PHILVOCS and PAG ... Institute of Volcanology and Seismology provides a classification system for the volcanoes of the country ... com content&task view&id 57&Itemid 114 Philippine Institute of Volcanology and Seismology PHIVOLCS ... 115 Philippine Institute of Volcanology and Seismology PHIVOLCS Potentially Active Volcano list ... of Volcanology and Seismology PHIVOLCS Inactive Volcano list http www.phivolcs.dost.gov.ph ... And Seismology Category Government of the Philippines Category Volcanoes of the Philippines nl Philippine Institute of Volcanology and Seismology tl Suriang Pilipino ng Bulkanolohiya at Sesmolohiya ... more details
Userspace draft source ArticleWizard date January 2011 Infobox company company name ESG Solutions company logo Image Esg solutions logo.gif 230px company type Private foundation 1993 location Kingston, Ontario Kingston , Ontario , Canada key people Ted Urbancic small Director small , Cezar Trifu small Director small , James Alexander small Director small , Ken Arnold small chief executive officer CEO small area served Global industry List of oilfield service companies Oil services , Mine services products Microseismic instrumentation and Geophysics Geophysical services parent subsid homepage http www.esgsolutions.com www.esgsolutions.com intl yes ESG Solutions Engineering Seismology Group or ESG is a geophysical products and services company specializing in microseismic monitoring. ESG manufactures and installs microseismic instrumentation and performs microseismic data processing and interpretation services. It is headquartered in Kingston, Ontario Kingston , Ontario , Canada , with offices in Calgary , Houston , Denver , San Fransisco , Amsterdam , Dubai and Changsha . History ESG Solutions was founded in 1993 as Engineering Seismology Group Inc. The company performs microseismic monitoring services for the oil and gas, mining and geotechnical industries, but its roots lie in microseismic monitoring for the Canadian mining industry. The group was loosely formed out of the Engineering Seismology Lab at Queen s University in Kingston, Ontario Kingston , Ontario , Canada that was performing research on a form of seismology called microseismics, or passive seismic . Early History in the Mining Industry Microseismic science is the study of very small scale earthquake s that are induced by industrial processes such as mining or oil production. In the 1980s, many mines in northern Ontario were experiencing increased seismic activity, including a large rockburst which killed 4 miners in Greater Sudbury Sudbury in 1984. ref Greater Sudbury. Wikipedia. Online http en.wikipe ... more details
International Institute of Earthquake Engineering and Seismology IIEES is an international earthquake engineering and seismology institute based in Iran . It was established as a result of the 24th UNESCO General Conference Resolution DR 250 under Iranian government approval in 1989. It was founded as an independent institute within the Iran s Ministry of Science, Research and Technology. ref name IIEES cite web url http www.iiees.ac.ir English institute eng about.html title About Institute publisher International Institute of Earthquake Engineering and Seismology accessdate November 23, 2008 archiveurl http web.archive.org web 20080606002635 http www.iiees.ac.ir English institute eng about.html Bot retrieved archive archivedate June 6, 2008 ref On its establishment, the IIEES drew up a seismic code in an attempt to improve the infrastructural response to earthquakes and seismic activity in the country. Its primary objective is to reduce the risk of seismic activity on buildings and roads and provide mitigation measures both in Iran and the region. ref name IIEES The institute is responsible for much of the research and education in this field by conducting research and providing education and knowledge in Seismotectonics seismotectonic studies, seismology and earthquake engineering. ref name IIEES In addition conducts research and educates in risk management and generating possibilities for an effective earthquake response strategy. The IIEES is composed of the following research Centers Seismology, Geotechnical Earthquake Engineering, Earthquake engineering research Structural Earthquake Engineering , Risk Management National center for Earthquake Prediction, and Graduate School, Public Education and Information Division. ref name IIEES See also 2003 Bam earthquake Bahram Akasheh Earthquake Engineering Research Institute National Center for Research on Earthquake Engineering References reflist External links http www.iiees.ac.ir Official site Persian http www.iiees.ac.ir ... more details
POLARIS is an underground experiment to observe seismic signals at depth in very hard rock. It is one of the current projects at SNOLAB in Canada ref http snolab2006.snolab.ca talks pups1.ppt SNOLAB presentation ref . References reflist DEFAULTSORT Polaris Category Geology Geology stub ... more details
Reynir B dvarsson is an Iceland ic seismologist working at Uppsala University in Sweden. B dvarsson is responsible for the Swedish National Seismology Network. External http www.geo.uu.se Default.aspx?pageid 1&lan 0 Seismology Institute Uppsala University http www.geofys.uu.se snsn Swedish National Seismology Net Homepage DEFAULTSORT Bodvarsson, Reynir Category Living people Category Year of birth missing living people Category Uppsala University faculty Category Seismologists Category Icelandic scientists Category Icelandic expatriates in Sweden Iceland bio stub sv Reynir B varsson ... more details
PGV may refer to Strong ground motion Peak Ground Velocity in seismology Pitt Greenville Airport PhpGedView , web based genealogy software disambig Long comment to avoid being listed on short pages it PGV ... more details
Baya is an inactive volcano in Ganassi municipality, Lanao del Sur province, Philippines . Philippine Institute of Volcanology and Seismology Phivolcs lists Baya as Inactive . ref http volcano.phivolcs.dost.gov.ph VolInactive.htm Philippines Institute of Volcanology and Seismology Phivolcs List of Inactive Volcanoes ref References reflist See also Inactive volcanoes of the Philippines List of volcanoes in the Philippines Pacific ring of fire Volcano Lanao del Sur Northern Mindanao coord missing Philippines Category Volcanoes of Mindanao Category Inactive volcanoes of the Philippines ... more details
Orphan date December 2010 File Geysers on Mars.jpg thumb Artist concept showing Geysers on Mars A Sand Geyser or Sand Fountain is a Geology geologic phenomena which occurs in association with earthquake s and other Seismology seismic events . ref http www.postandcourier.com news 2007 jun 12 old sand geyser shows quakes part life here ref ref http findarticles.com p articles mi m1200 is 2 166 ai n6137871 ref References references DEFAULTSORT Sand Geyser Category Seismology and earthquake terminology geology stub ... more details
Orphan date November 2006 In Reflection seismology , stacking velocity is the value of velocity obtained from the best fit hyperbola analysis. References http www.glossary.oilfield.slb.com Display.cfm?Term stacking 20velocity Schlumberger Oilfield Glossary DEFAULTSORT Stacking Velocity Category Geology geol stub ... more details
Cleanup date September 2009 The following articles relate to the volcanos of the Philippines Erupting volcanoes in the Philippines Active volcanoes in the Philippines Potentially active volcanoes in the Philippines Inactive volcanoes in the Philippines Philippine Institute of Volcanology and Seismology DEFAULTSORT Volcanoes In The Philippines Category Volcanoes of the Philippines Volcanology stub ... more details
Wiktionarypar asperity Asperity may refer to Asperger syndrome a Mental disorder psycological disorder Aspergillus a genus of fungus Asperity Geotechnical engineering as used in Geotechnical engineering Asperity materials science the unevenness of a surface, in physics and in seismology Asperity Mountain mountain in British Columbia , Canada Cultural asperity the resistance to change in organisations dab ... more details
Summary logo fur Article Engineering Seismology Group Use Infobox ADDITIONAL INFORMATION Used for Owner Website History Commentary OVERRIDE FIELDS Description Source www.esgsolutions.com Portion Low resolution Purpose Must be specified if Use is not Infobox Org Brand Product Replaceability other information Licensing Non free logo ... more details
for the island in Indonesia Buton Butung is an inactive volcano , elevation 684 metres above mean sea level ASL , located at 7.75 N, 125.083 E, in Maramag, Bukidnon Maramag Municipality, Bukidnon Philippine Province Province , island of Mindanao , in the Philippines . The Philippine Institute of Volcanology and Seismology Phivolcs lists Butung as Inactive . ref http volcano.phivolcs.dost.gov.ph VolInactive.htm Philippine Institute of Volcanology and Seismology Phivolcs List of Inactive Volcanoes ref References reflist See also Inactive volcanos in the Philippines Volcanos in the Philippines Pacific ring of fire Volcano Bukidnon Northern Mindanao Mindanao coord 7.75 N 125.083 E Category Volcanoes of Mindanao Category Inactive volcanoes of the Philippines ... more details
A characteristic earthquake is a repeating, large earthquake that occurs more frequently than local Seismology seismic monitoring would suggest. http www.earth.northwestern.edu people seth research eqrec.html Characteristic earthquakes are usually defined from paleoseismology observations. This has important implications for seismic hazard calculations and earthquake insurance rates . Basically, it implies that there is a section of a Fault geology fault that has very little observed seismicity, but is a high hazard because the paleoseismic studies show a regular pattern of large earthquakes. References Reflist Unreferenced date January 2010 Category Seismology geophysics stub ja ... more details
orphan date April 2010 refimprove date April 2010 In seismology , a seismic trace refers to the recorded curve from a single seismometer seismograph when measuring ground movement. The name comes from the curve plotted by a seismograph as the paper roll rotated and the needle left a trace from which information about the subsurface could be extracted. Today s instruments record the data digitally and the word trace has come to mean the digital curve. Complex seismic trace The recorded seismic trace is considered the real number real part of the complex number complex trace. By phase shifting the recorded trace by 90 degrees, we can obtain the imaginary number imaginary part of the complex trace. The complex seismic trace is a complex function whose real and imaginary part are the previously mentioned ref name Barnes cite journal last Barnes first A.E. year 2007 title A tutorial on complex seismic trace analysis journal Geophysics volume 72 pages W33 W43 ref . From the complex trace, one can now define seismic attribute s such as the complex amplitude, phase, instantaneous phase and instantaneous frequency. References Reflist Category Seismology measurement Category Seismology ... more details
The 1920 Mendoza earthquake was a earthquake seismic movement that took place in the provinces of Argentina province of Mendoza Province Mendoza , Argentina , on 17 December 1920, at 06 59 49 p.m. It recorded magnitude 6.0 in the Richter magnitude scale Richter scale . Its epicenter was at coord 32 42 S 68 24 W , at a depth of 40 km. The earthquake was felt with grade VIII in the Mercalli intensity scale . It affected the provincial capital Mendoza, Argentina Mendoza , and caused material damages and numerous fatal victims in several towns located 30 km northeast from it. See also 1782 Mendoza earthquake References es icon Instituto Nacional de Prevenci n S smica. http www.inpres.gov.ar seismology seismology historic hist.panel.htm Listado de Terremotos Hist ricos . Category 1920 natural disasters Mendoza earthquake Category Earthquakes in Mendoza Province 1920 Category 1920 earthquakes Mendoza, 1920 es Terremoto de Mendoza de 1920 ... more details
Infobox mountain name Alu photo photo caption elevation m 95 prominence listing Inactive volcanoes of the Philippines location Sulu Province Sulu , Philippines range coordinates coord 5.6917 N 120.883 E format dec type mountain region PH display inline topo type age volcanic arc belt Sulu Volcanic Arc last eruption first ascent easiest route Alu is an inactive volcano located at 5.6917 N, 120.883 E, in the province of Sulu Province Sulu in the Philippines . The Philippine Institute of Volcanology and Seismology Phivolcs lists Alu as Inactive . ref http volcano.phivolcs.dost.gov.ph VolInactive.htm Philippine Institute of Volcanology and Seismology Phivolcs List of Inactive Volcanoes ref References reflist See also Inactive volcanos in the Philippines Volcanos in the Philippines Pacific ring of fire Volcano Sulu Province Sulu Autonomous Region in Muslim Mindanao Mindanao Category Volcanoes of Mindanao Category Inactive volcanoes of the Philippines ... more details
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