Magnitude determination using duration of high frequency energy radiation for the 2011 Off the Pacific Coast of Tohoku Earthquake
|
|
- Clifton Jordan
- 5 years ago
- Views:
Transcription
1 Magnitude determination using duration of high frequency energy radiation for the 2011 Off the Pacific Coast of Tohoku Earthquake Tatsuhiko Hara International Institute of Seismology and Earthquake Engineering (IISEE), Building Research Institute 1
2 Summary The source time of the 2011 Tohoku earthquake is around 170 s. The rupture that generated strong high frequency signals propagated in the southwest direction. The magnitude estimate based on the formula of Hara (2007a) is Compared to the 2004 Sumatra earthquake, the duration of high frequency energy radiation is shorter (about 43 %), the maximum amplitude (with the distance correction) is larger (about 170 %). 2
3 International Institute of Seismology and Earthquake Engineering (IISEE), Building Research Institute The IISEE is providing training courses in fields of seismology, tsunami, and earthquake engineering for participants from developing countries. Among them, the Global Seismological Observation course is provided to contribute to promotion of CTBT (T5-P14). 3
4 Magnitude using HFER and displacement amplitude We developed a new method to determine earthquake magnitudes using durations of high frequency energy radiation (HFER), t (s), and the maximum displacement amplitudes, A (m), measured from first arriving P-waves (Hara, 2007a, EPS, 59, ): M where = 0.79 log A log logt (km) is a epicentral distance. The above formula is applicable to M9 events (Hara, 2007a) and to tsunami earthquakes (Hara, 2007b, EPS, 59, ). Hara (2007a) showed that HFER durations well correlate with source times. 4
5 Measurement of HFER duration Observed broadband records 2-4 Hz band-pass filtered time series Smoothed time series Event: 2011 Tohoku, Station: MBWA End of HFER: 25 % of the peak We use one sixth of the difference between P wave arrival time and the time when the amplitude of band-pass filtered time series becomes the largest as the moving window for smoothing. 5
6 Measurement of HFER duration of the 2011 Tohoku earthquake We retrieved broadband waveforms recorded at GSN stations in teleseismic distance range from IRIS DMC. We applied the HFER measurement procedure of Hara (2007a) to these data. 6
7 HFER duration of the 2011 Tohoku earthquake The mean of the measured HFER durations is s. The azimuthal dependence suggests that the rupture that generated strong high frequency signals propagated in the southwest direction. This suggests two distinct rupture propagations; the other is the rupture in the east direction that caused huge tsunamis (e.g., Fujii and Satake, 7
8 Magnitude determination The magnitude estimate from the formula of Hara (2007a) is In terms of HFER duration and maximum amplitudes, the 2011 Tohoku earthquake is not tsunami-earthquake like. 8
9 High Frequency Peak Time Hara (2008, EPS, 60, ) investigated distribution of time difference between P wave arrival time and the time when the amplitude of band-pass filtered time series becomes the largest, which we call the high frequency peak time. We measure high frequency peak times following these steps: 1. Baseline correction; 2. Application of 2-4 Hz high band-pass filter; 3. Square each data points; 4. Detect P-wave arrival by STA/LTA with manual correction; 5. Find the peak of the squared time series within 400 s from the arrival of P-wave. 9
10 Temporal distribution of Normalized High Frequency Peak Times Normalized High = Frequency Peak Time High Frequency Peak time 2 (Centroid timeshift) 100 (%) 2011 Tohoku earthquake Events whose centroid time shifts > 40s (modified from Hara [2008]) 10
11 Conclusion The HFER duration and magnitude of the 2011 Tohoku earthquake are s and 8.96, respectively. The directivity of HFER durations suggest that the rupture that generated strong high frequency signals propagated in the southwest direction. In terms of HFER duration and amplitude, the 2011 Tohoku earthquake is not tsunami-earthquake like. The distribution of normalized high frequency peak times of this event is consistent with that of a set of large earthquakes obtained by Hara (2008). The above distribution implies that HFER is weak in the vicinity of rupture starting areas. 11
RAPID MAGITUDE DETERMINATION FOR TSUNAMI WARNING USING LOCAL DATA IN AND AROUND NICARAGUA
RAPID MAGITUDE DETERMINATION FOR TSUNAMI WARNING USING LOCAL DATA IN AND AROUND NICARAGUA Domingo Jose NAMENDI MARTINEZ MEE16721 Supervisor: Akio KATSUMATA ABSTRACT The rapid magnitude determination of
More informationCoda Waveform Correlations
Chapter 5 Coda Waveform Correlations 5.1 Cross-Correlation of Seismic Coda 5.1.1 Introduction In the previous section, the generation of the surface wave component of the Green s function by the correlation
More informationRetrieving Focal Mechanism of Earthquakes Using the CAP Method
Retrieving Focal Mechanism of Earthquakes Using the CAP Method Hongfeng Yang April 11, 2013 1 Introduction Waveforms recorded at a seismic station, W (t), compose of three components: W (t) = S(t) G(t)
More informationTOWARD A RAYLEIGH WAVE ATTENUATION MODEL FOR EURASIA AND CALIBRATING A NEW M S FORMULA
TOWARD A RAYLEIGH WAVE ATTENUATION MODEL FOR EURASIA AND CALIBRATING A NEW M S FORMULA Xiaoning (David) Yang 1, Anthony R. Lowry 2, Anatoli L. Levshin 2 and Michael H. Ritzwoller 2 1 Los Alamos National
More informationA Rayleigh wave back-projection method applied to the 2011 Tohoku earthquake
A Rayleigh wave back-projection method applied to the 2011 Tohoku earthquake Daniel Roten, Hiroe Miyake, and Kazuki Koketsu (2012), GRL Earthquake of the Week - 27 January 2012 Roten, D., H. Miyake, and
More informationIdentification of High Frequency pulse from Earthquake asperities along Chilean subduction zone using strong motion
Identification of High Frequency pulse from Earthquake asperities along Chilean subduction zone using strong motion S. Ruiz 1,2, E. Kausel 1, J. Campos 1, R. Saragoni 1 and R. Madariaga 2. 1 University
More information29th Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies REGIONAL EVENT IDENTIFICATION RESEARCH IN ASIA
REGIONAL EVENT IDENTIFICATION RESEARCH IN ASIA Hans E. Hartse, George E. Randall, Xiaoning (David) Yang, and Charlotte A. Rowe Los Alamos National Laboratory Sponsored by National Nuclear Security Administration
More informationTopic Additional seismogram examples at distances beyond 100. Example 1: Earthquake in the Chile-Bolivia border region (intermediate source depth)
Topic Additional seismogram examples at distances beyond 100 Authors Klaus Klinge, Federal Institute for Geosciences and Natural Resources, Seismological Central Observatory, Gräfenberg (SZGRF), Mozartstrasse
More information1.Earthquake Early Warning System. Japan Meteorological Agency
1 st Process 1.Earthquake Early Warning System Estimation Estimation of of Hypocenter, Hypocenter, Magnitude Magnitude and and Seismic Seismic Intensity Intensity Dissemination Dissemination 2. 2. Present
More informationINFLUENCE OF STATIC DISPLACEMENT ON PEAK GROUND VELOCITY AT SITES THAT EXPERIENCED FORWARD-RUPTURE DIRECTIVITY
Seismic Fault-induced Failures, 115-1, 1 January INFLUENCE OF STATIC DISPLACEMENT ON PEAK GROUND VELOCITY AT SITES THAT EXPERIENCED FORWARD-RUPTURE DIRECTIVITY Mladen V. Kostadinov 1 and Fumio Yamazaki
More informationObservations of the OSOP Sixaola, March 1-3, 2016, at the Albuquerque Seismological Laboratory
Observations of the OSOP Sixaola, March 1-3, 2016, at the Albuquerque Seismological Laboratory There were two representatives (Angel Rodriquez and David Nelson) from OSOP at ASL March 1-3, 2016, and they
More informationShort Notes Characterization of a Continuous, Very Narrowband Seismic Signal near 2.08 Hz
Bulletin of the Seismological Society of America, 91, 6, pp. 1910 1916, December 2001 Short Notes Characterization of a Continuous, Very Narrowband Seismic Signal near 2.08 Hz by Kelly H. Liu and Stephen
More informationASSESSING LOCATION CAPABILITY WITH GROUND TRUTH EVENTS: THE DEAD SEA AND SOUTH AFRICA REGIONS. Clifford Thurber, Haijiang Zhang, and William Lutter
ASSESSING LOCATION CAPABILITY WITH GROUND TRUTH EVENTS: THE DEAD SEA AND SOUTH AFRICA REGIONS Clifford Thurber, Haijiang Zhang, and William Lutter University of Wisconsin-Madison Sponsored by Defense Threat
More informationGeophysical Journal International
Geophysical Journal International Geophys. J. Int. (2014) 196, 432 446 Advance Access publication 2013 October 16 doi: 10.1093/gji/ggt371 Towards real-time regional earthquake simulation I: real-time moment
More informationAthanassios Ganas, Research Director, NOA
Advanced GNSS techniques for earthquake assessment and monitoring Athanassios Ganas, aganas@noa.gr Research Director, NOA NOA GPS Project http://www.gein.noa.gr/gps.html Hemus NET Project http://www.hemus-net.org/
More information29th Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies
BASIC RESEARCH ON SEISMIC AND INFRASONIC MONITORING OF THE EUROPEAN ARCTIC ABSTRACT Frode Ringdal, Tormod Kværna, Svein Mykkeltveit, Steven J. Gibbons, and Johannes Schweitzer NORSAR Sponsored by Army
More informationTOWARD A RAYLEIGH WAVE ATTENUATION MODEL FOR CENTRAL ASIA
TOWARD A RAYLEIGH WAVE ATTENUATION MODEL FOR CENTRAL ASIA Anatoli L. Levshin 1, Xiaoning (David) Yang 2, Michael H. Ritzwoller 1, Michail P. Barmin 1, Anthony R. Lowry 1 University of Colorado at Boulder
More informationDATABASE: SUMMARY, STATUS AND GROUND MOTION PRODUCTS
07/14/2014 NGA-East SSHAC Workshop 2 1 DATABASE: SUMMARY, STATUS AND GROUND MOTION PRODUCTS Tadahiro Kishida Pacific Earthquake Engineering Research Center NGA-East SSHAC Workshop 2, Berkeley International
More informationMulticomponent seismic polarization analysis
Saul E. Guevara and Robert R. Stewart ABSTRACT In the 3-C seismic method, the plant orientation and polarity of geophones should be previously known to provide correct amplitude information. In principle
More informationDatasheet DS USGS NEIC-data: OT 11:56: N 23.55E h = 10km mb = 5.8
Topic compiled by Version Additional seismogram examples within the distance range 13-100 Klaus Klinge (formerly Federal Institute for Geosciences and Natural Resources, 30655 Hannover, Germany); E-mail:
More information28th Seismic Research Review: Ground-Based Nuclear Explosion Monitoring Technologies
SEISMIC SOURCE LOCATIONS AND PARAMETERS FOR SPARSE NETWORKS BY MATCHING OBSERVED SEISMOGRAMS TO SEMI-EMPIRICAL SYNTHETIC SEISMOGRAMS: IMPROVEMENTS TO THE PHASE SPECTRUM PARAMETERIZATION David. Salzberg
More informationFrom Last Time Wave Properties. Description of a Wave. Water waves? Water waves occur on the surface. They are a kind of transverse wave.
From Last Time Wave Properties Amplitude is the maximum displacement from the equilibrium position Wavelength,, is the distance between two successive points that behave identically Period: time required
More information28th Seismic Research Review: Ground-Based Nuclear Explosion Monitoring Technologies
THE CURRENT STATUS OF INFRASOUND DATA PROCESSING AT THE INTERNATIONAL DATA CENTRE Nicolas Brachet and John Coyne Provisional Technical Secretariat of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban
More informationContents of this file 1. Text S1 2. Figures S1 to S4. 1. Introduction
Supporting Information for Imaging widespread seismicity at mid-lower crustal depths beneath Long Beach, CA, with a dense seismic array: Evidence for a depth-dependent earthquake size distribution A. Inbal,
More informationUsing W phase for regional tsunami warning and rapid earthquake hazard assessment
Using W phase for regional tsunami warning and rapid earthquake hazard assessment Luis Rivera 1 Hiroo Kanamori 2 1 Strasbourg University, Institut de Physique du Globe 2 Seismological Laboratory, Caltech
More informationREMOTE MONITORING OF WEAK AFTERSHOCK ACTIVITY WITH WAVEFORM CROSS CORRELATION: THE CASE OF THE DPRK SEPTEMBER 9, 2016 UNDERGROUND TEST
REMOTE MONITORING OF WEAK AFTERSHOCK ACTIVITY WITH WAVEFORM CROSS CORRELATION: THE CASE OF THE DPRK SEPTEMBER 9, 2016 UNDERGROUND TEST Bobrov D.I., I.O. Kitov, and M.V. Rozhkov Abstract The method of waveform
More informationPerformance of the GSN station SSE-IC,
Performance of the GSN station SSE-IC, 1996-2009 A report in a series documenting the status of the Global Seismographic Network WQC Report 2010:10 March 4, 2010 Göran Ekström and Meredith Nettles Waveform
More informationQC TX Network. Introduction. R. B. Herrmann, Saint Louis University
QC TX Network R. B. Herrmann, Saint Louis University Introduction The purpose of this report is to review the metadata of the TX network. The reason for this study is that regional moment tensor inversion
More informationSource inversion of W phase: speeding up seismic tsunami warning
Geophys. J. Int. (2008) 175, 222 238 doi: 10.1111/j.1365-246X.2008.03887.x Source inversion of W phase: speeding up seismic tsunami warning Hiroo Kanamori 1 and Luis Rivera 2 1 Seismological Lab., California
More informationStrong Motion Data: Structures
Strong Motion Data: Structures Adam Pascale Chief Technology Officer, Seismology Research Centre a division of ESS Earth Sciences Treasurer, Australian Earthquake Engineering Society Why monitor buildings?
More informationCapabilities of the IMS Seismic Auxiliary Network
May 12, 2009 Capabilities of the IMS Seismic Auxiliary Network David Hafemeister Center for International Security and Cooperation Stanford University The 2002 US National Academy of Sciences study, Technical
More informationCONTRIBUTION OF THE IMS GLOBAL NETWORK OF HYDROACOUSTIC STATIONS FOR MONITORING THE CTBT PAULINA BITTNER, EZEKIEL JONATHAN, MARCELA VILLARROEL
CONTRIBUTION OF THE IMS GLOBAL NETWORK OF HYDROACOUSTIC STATIONS FOR MONITORING THE CTBT PAULINA BITTNER, EZEKIEL JONATHAN, MARCELA VILLARROEL Provisional Technical Secretariat of the Preparatory Commission
More informationEDDIE: Spectral Seismology
EDDIE: Spectral Seismology This module was initially developed by Soule, D. S., M. Weirathmuller, G. Kroeger, and R. Darner Gougis. 20 March 2017. EDDIE: Spectral Seismology. EDDIE Module 10, Version 1.
More information24th Seismic Research Review Nuclear Explosion Monitoring: Innovation and Integration
ON INFRASOUND DETECTION AND LOCATION STRATEGIES Rodney Whitaker, Douglas ReVelle, and Tom Sandoval Los Alamos National Laboratory Sponsored by National Nuclear Security Administration Office of Nonproliferation
More informationNew Metrics Developed for a Complex Cepstrum Depth Program
T3.5-05 Robert C. Kemerait Ileana M. Tibuleac Jose F. Pascual-Amadeo Michael Thursby Chandan Saikia Nuclear Treaty Monitoring, Geophysics Division New Metrics Developed for a Complex Cepstrum Depth Program
More informationEstablishment of New Low-Cost and High-Resolution Real-Time Continuous Strong Motion Observation Network by CEORKA
Establishment of New Low-Cost and High-Resolution Real-Time Continuous Strong Motion Observation Network by CEORKA T. Akazawa Geo-Research Institute, Japan M. Araki alab Inc., Japan S. Sawada & Y. Hayashi
More informationA k-mean characteristic function to improve STA/LTA detection
A k-mean characteristic function to improve STA/LTA detection Jubran Akram*,1, Daniel Peter 1, and David Eaton 2 1 King Abdullah University of Science and Technology (KAUST), Saudi Arabia 2 University
More informationTOWARD A RAYLEIGH WAVE ATTENUATION MODEL FOR ASIA AND SURROUNDING REGIONS. Sponsored by National Nuclear Security Administration
TOWARD A RAYLEIGH WAVE ATTENUATION MODEL FOR ASIA AND SURROUNDING REGIONS Anatoli L. Levshin 1, Mikhail P. Barmin 1, Xiaoning Yang 2, Michael H. Ritzwoller 1 University of Colorado at Boulder 1, Los Alamos
More informationTHE ALTERNATIVE APPROACH FOR SEISMIC MONITORING DATA IDENTIFICATION EXCLUDING MASTER EVENTS
THE ALTERNATIVE APPROACH FOR SEISMIC MONITORING DATA IDENTIFICATION EXCLUDING MASTER EVENTS Kseniia NEPEINA 1 ABSTRACT The problem of monitoring of different types of seismic events is one of the key in
More informationEDDIE: Spectral Seismology Instructors Manual
EDDIE: Spectral Seismology Instructors Manual This module was initially developed by Soule, D. S., M. Weirathmuller, G. Kroeger, and R. Darner Gougis. 20 March 2017. EDDIE: Spectral Seismology. EDDIE Module
More informationQuantitative Identification of Near-Fault Ground Motion using Baker s Method; an Application for March 2011 Japan M9.0 Earthquake
Cite as: Tazarv, M., Quantitative Identification of Near-Fault Ground Motion using Baker s Method; an Application for March 2011 Japan M9.0 Earthquake, Available at: http://alum.sharif.ir/~tazarv/ Quantitative
More informationTsunami amplitudes estimation from numerical simulations and empirical laws
Tsunami amplitudes estimation from numerical simulations and empirical laws Sixth International workshop on tsunami, Guayaquil 14-15 sept 2007 Dominique Reymond CEA/DASE/LDG BOX 640 Papeete 98713 French
More information=, (1) Summary. Theory. Introduction
Noise suppression for detection and location of microseismic events using a matched filter Leo Eisner*, David Abbott, William B. Barker, James Lakings and Michael P. Thornton, Microseismic Inc. Summary
More informationSidereal Filtering for Multi-GNSS Precise Point Positioning and Deformation Monitoring
Sidereal Filtering for Multi-GNSS Precise Point Positioning and Deformation Monitoring Philippa Catherine Cowles Thesis submitted for the Degree of Doctor of Philosophy School of Civil Engineering and
More informationEARTHQUAKE RESPONSE OF HIGHWAY BRIDGES SUBJECTED TO LONG DURATION SEISMIC MOTIONS. Kataoka Shojiro 1
EARTHQUAKE RESPONSE OF HIGHWAY BRIDGES SUBJECTED TO LONG DURATION SEISMIC MOTIONS Abstract Kataoka Shojiro 1 Strong motion records obtained during the 23 off Tokachi, Japan, earthquake (Mw8.) and the 21
More informationInfrasonic Observations of the Hekla Eruption of February 26, 2000
JOURNAL OF LOW FREQUENCY NOISE, VIBRATION AND ACTIVE CONTROL Pages 1 8 Infrasonic Observations of the Hekla Eruption of February 26, 2000 Ludwik Liszka 1 and Milton A. Garces 2 1 Swedish Institute of Space
More informationAnalysis of Ground Motions from Nov. 5, 2015 earthquake sequence near Fundao Dam, Brazil July 20, 2016 Gail M. Atkinson, Ph.D., P.Geo.
1 Analysis of Ground Motions from Nov. 5, 2015 earthquake sequence near Fundao Dam, Brazil July 20, 2016 Gail M. Atkinson, Ph.D., P.Geo., FRSC Introduction This report presents an analysis of the ground
More information2008 Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies
BASIC RESEARCH ON SEISMIC AND INFRASONIC MONITORING OF THE EUROPEAN ARCTIC Frode Ringdal, Tormod Kværna, Svein Mykkeltveit, Steven J. Gibbons, and Johannes Schweitzer NORSAR Sponsored by Army Space and
More informationA Comparison of Regional-Phase Amplitude Ratio Measurement Techniques
Bulletin of the Seismological Society of America, VoL 87, No. 6, pp. 1613-1621, December 1997 A Comparison of Regional-Phase Amplitude Ratio Measurement Techniques by Arthur J. Rodgers, Thorne Lay, William
More informationTsunami detection in the ionosphere
Tsunami detection in the ionosphere [by Juliette Artru (Caltech, Pasadena, USA), Philippe Lognonné, Giovanni Occhipinti, François Crespon, Raphael Garcia (IPGP, Paris, France), Eric Jeansou, Noveltis (Toulouse,
More informationThe 16 August 1997 Novaya Zemlya Seismic Event As Viewed From GSN Stations KEV and KBS
The 6 August 997 Novaya Zemlya Seismic Event As Viewed From GSN Stations KEV and KBS Hans E Hartse Earth and Environmental Division, Geophysics Group Los Alamos National Lab, MS C335 Los Alamos, New Mexico
More informationApplication of Multi-channel Wiener Filters to the Suppression of Ambient Seismic Noise in Passive Seismic Arrays
Application of Multi-channel Wiener Filters to the Suppression of Ambient Seismic Noise in Passive Seismic Arrays J. Wang 1, F. Tilmann 1, R. S. White 1, H. Soosalu 1 and P. Bordoni 2 1. Bullard Laboratories,
More informationU.S. Department of the Interior. Geological Survey. Experiments with SRO and GRF-array data. George L. Choy. Open-File Report
U.S. Department of the Interior Geological Survey Experiments with SRO and GRF-array data by George L. Choy Open-File Report 82-216 1982 This report is preliminary and has not been reviewed for conformity
More informationRegional and Far-Regional Earthquake Locations and Source Parameters Using Sparse Broadband Networks: A Test on the Ridgecrest Sequence
Bulletin of the Seismological Society of America, Vol. 88, No. 6, pp. 1353-1362, December 1998 Regional and Far-Regional Earthquake Locations and Source Parameters Using Sparse Broadband Networks: A Test
More informationFrom Last Time Wave Properties. Description of a Wave. Question. Examples. More types of waves. Seismic waves
From Last Time Wave Properties Amplitude is the maximum displacement of string above the equilibrium position Wavelength, λ, is the distance between two successive points that behave identically Period:
More informationSeismic intensities derived from strong motion instruments in New Zealand
Seismic intensities derived from strong motion instruments in New Zealand P.N. Davenport Institute of Geological and Nuclear Sciences, Lower Hutt NZSEE 2001 Conference ABSTRACT: Intensity of ground shaking
More informationREGIONAL WAVEFIELD ANALYSIS USING THREE-COMPONENT SEISMIC ARRAY DATA
REGIONAL WAVEFIELD ANALYSIS USING THREE-COMPONENT SEISMIC ARRAY DATA Gregory S. Wagner & Thomas J. Owens Department of Geological Sciences University of South Carolina Columbia, SC 29208 AFOSR Contract
More informationStudy of Low-frequency Seismic Events Sources in the Mines of the Verkhnekamskoye Potash Deposit
Study of Low-frequency Seismic Events Sources in the Mines of the Verkhnekamskoye Potash Deposit D.A. Malovichko Mining Institute, Ural Branch, Russian Academy of Sciences ABSTRACT Seismic networks operated
More information29th Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies
SEISMIC AND INFRASOUND ENERGY GENERATION AND PROPAGATION AT LOCAL AND REGIONAL DISTANCES: PHASE 1 DIVINE STRAKE EXPERIMENT Brian Stump 1, Relu Burlacu 3, Chris Hayward 1, Jessie Bonner 2, Kristine Pankow
More informationArray-seismology - Lecture 1
Array-seismology - Lecture 1 Matthias Ohrnberger Universität Potsdam Institut für Geowissenschaften Sommersemester 2009 29. April 2009 Outline for 29. April 2009 1 Array seismology: overview What is an
More information2.6 High-rate precise point positioning: observation of crustal deformation by using 1-Hz GPS data
2.6 High-rate precise point positioning: observation of crustal deformation by using 1-Hz GPS data Tomoji Takasu (Technical Consultant) ttaka@gpspp.sakura.ne.jp, URL: gpspp.sakura.ne.jp Abstract Seismic
More informationSome observations of data quality at global seismic stations
Some observations of data quality at global seismic stations Meredith Nettles and Göran Ekström Global CMT Project Waveform Quality Center SITS, 2009/11/10 1. Data quality control using signals 1a. Sensor
More informationHIGH-ORDER STATISTICS APPROACH: AUTOMATIC DETERMINATION OF SIGN AND ARRIVAL TIME OF ACOUSTIC EMISSION SIGNALS
HIGH-ORDER STATISTICS APPROACH: AUTOMATIC DETERMIATIO OF SIG AD ARRIVAL TIME OF ACOUSTIC EMISSIO SIGALS Tomáš Lokajíček and Karel Klíma Institute of Geology, Academy of Sciences of the Czech Republic v.v.i.,
More informationGlobal Detection of Infrasonic Signals from Three Large Bolides
Earth Moon Planet (2008) 102:357 363 DOI 10.1007/s11038-007-9205-z Global Detection of Infrasonic Signals from Three Large Bolides Stephen J. Arrowsmith Æ Doug ReVelle Æ Wayne Edwards Æ Peter Brown Received:
More informationA COMPARISON OF SITE-AMPLIFICATION ESTIMATED FROM DIFFERENT METHODS USING A STRONG MOTION OBSERVATION ARRAY IN TANGSHAN, CHINA
A COMPARISON OF SITE-AMPLIFICATION ESTIMATED FROM DIFFERENT METHODS USING A STRONG MOTION OBSERVATION ARRAY IN TANGSHAN, CHINA Wenbo ZHANG 1 And Koji MATSUNAMI 2 SUMMARY A seismic observation array for
More informationGNSS buoy array in the ocean for natural hazard mitigation. Teruyuki KATO Earthquake Research Institute the University of Tokyo, Japan
GNSS buoy array in the ocean for natural hazard mitigation Teruyuki KATO Earthquake Research Institute the University of Tokyo, Japan 1 GNSS applications in Earth science From static to high-rate observations
More information27th Seismic Research Review: Ground-Based Nuclear Explosion Monitoring Technologies
GLOBAL GROUND TRUTH DATA SET WITH WAVEFORM AND IMPROVED ARRIVAL DATA István Bondár 1, Ben Kohl 1, Eric Bergman 2, Keith McLaughlin 1, Hans Israelsson 1, Yu-Long Kung 1, Paul Piraino 1, and Bob Engdahl
More informationSpatial coherency of earthquake-induced ground accelerations recorded by 100-Station of Istanbul Rapid Response Network
Spatial coherency of -induced ground accelerations recorded by 100-Station of Istanbul Rapid Response Network Ebru Harmandar, Eser Cakti, Mustafa Erdik Kandilli Observatory and Earthquake Research Institute,
More informationHector Mine, California, earthquake
179 Chapter 5 16 October 1999 M=7.1 Hector Mine, California, earthquake The 1999 M w 7.1 Hector Mine earthquake sequence was the most recent of a series of moderate to large earthquakes on the Eastern
More informationGPS-TEC : a new versatile sensor of the Earth
2006 Jun. VI Hotine-Marussi Symp. Theor. Computational Geodesy GPS-TEC : a new versatile sensor of the Earth Kosuke Heki (Hokkaido Univ., Sapporo, Japan) Ionospheric disturbances can be measured with GPS
More informationA TECHNIQUE FOR AUTOMATIC DETECTION OF ONSET TIME OF P- AND S-PHASES IN STRONG MOTION RECORDS
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 786 A TECHNIQUE FOR AUTOMATIC DETECTION OF ONSET TIME OF P- AND S-PHASES IN STRONG MOTION RECORDS Takashi
More informationESTIMATING LOCAL AND NEAR-REGIONAL VELOCITY AND ATTENUATION STRUCTURE FROM SEISMIC NOISE. Sponsored by Air Force Research Laboratory
ESTIMATING LOCAL AND NEAR-REGIONAL VELOCITY AND ATTENUATION STRUCTURE FROM SEISMIC NOISE Peter Gerstoft 1, Jian Zhang 1, William A Kuperman 1, Nick Harmon 1, Karim G. Sabra 2, Michael C Fehler 3, Steven
More information2008 Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies TOWARD A RAYLEIGH WAVE ATTENUATION MODEL FOR ASIA
TOWARD A RAYLEIGH WAVE ATTENUATION MODEL FOR ASIA AND SURROUNDING REGIONS Anatoli L. Levshin 1, Mikhail P. Barmin 1, Xiaoning Yang 2, and Michael H. Ritzwoller 1 University of Colorado at Boulder 1 and
More informationGeophysical Journal International
Geophysical Journal International Geophys. J. Int. (2010) doi: 10.1111/j.1365-246X.2010.04897.x Seismic moment tensor inversion using a 3-D structural model: applications for the Australian region Myall
More informationSite Response from Incident Pnl Waves
Bulletin of the Seismological Society of America, Vol. 94, No. 1, pp. 357 362, February 2004 Site Response from Incident Pnl Waves by Brian Savage and Don V. Helmberger Abstract We developed a new method
More informationCS229: Machine Learning
CS229: Machine Learning Event Identification in Continues Seismic Data Please print out, fill in and include this cover sheet as the first page of your submission. We strongly recommend that you use this
More informationReal-time testing of the on-site warning algorithm in southern California and its performance during the July M w 5.4 Chino Hills earthquake
Click Here for Full Article GEOPHYSICAL RESEARCH LETTERS, VOL. 36, L00B03, doi:10.1029/2008gl036366, 2009 Real-time testing of the on-site warning algorithm in southern California and its performance during
More informationA COMPARISON OF TIME- AND FREQUENCY-DOMAIN AMPLITUDE MEASUREMENTS. Hans E. Hartse. Los Alamos National Laboratory
OMPRISON OF TIME- N FREQUENY-OMIN MPLITUE MESUREMENTS STRT Hans E. Hartse Los lamos National Laboratory Sponsored by National Nuclear Security dministration Office of Nonproliferation Research and Engineering
More informationDetection and Identification of Small Regional Seismic Events
Detection and Identification of Small Regional Seismic Events T. J. Bennett, B. W. Barker, M. E. Marshall, and J. R. Murphy S-CU BED 11800 Sunrise Valley Dr., Suite 1212 Reston, Virginia 22091 Contract
More informationMatching and Locating of Cloud to Ground Lightning Discharges
Charles Wang Duke University Class of 05 ECE/CPS Pratt Fellow Matching and Locating of Cloud to Ground Lightning Discharges Advisor: Prof. Steven Cummer I: Introduction When a lightning discharge occurs
More informationPulse Compression. Since each part of the pulse has unique frequency, the returns can be completely separated.
Pulse Compression Pulse compression is a generic term that is used to describe a waveshaping process that is produced as a propagating waveform is modified by the electrical network properties of the transmission
More informationObservations and origin of Rayleigh-wave amplitude anomalies
Geophys. J. Int. (1998) 135, 691 699 Observations and origin of Rayleigh-wave amplitude anomalies S. van der Lee* Department of T errestrial Magnetism, Carnegie Institution of Washington, Washington, DC
More informationWaveform cross correlation applied to earthquakes in the Atlantic Ocean. Dmitry Bobrov, Ivan Kitov, and Mikhail Rozhkov
Waveform cross correlation applied to earthquakes in the Atlantic Ocean Dmitry Bobrov, Ivan Kitov, and Mikhail Rozhkov Comprehensive Nuclear-Test-Ban Treaty Organization Abstract We assess the level of
More informationEFFECTS IN THE VARIATIONS OF THE AMPLITUDE OF LOW- FREQUENCY RADIO SIGNALS AND ATMOSPHERICS PASSING OVER THE EPICENTER OF DEEP EARTHQUAKES
EFFECTS IN THE VARIATIONS OF THE AMPLITUDE OF LOW- FREQUENCY RADIO SIGNALS AND ATMOSPHERICS PASSING OVER THE EPICENTER OF DEEP EARTHQUAKES V.A. Mullayarov, V.V. Argunov, L.M. Abzaletdinova Yu.G. Shafer
More information2008 Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies
DETERMINATION OF THE SEISMIC MOMENT TENSOR USING SURFACE WAVES RECORDED BY THE IMS NETWORK Jeffrey Given 2, Ronan J. Le Bras 1, and Yu-Long Kung 2 Comprehensive Nuclear-Test-Ban Treaty Organization 1 and
More informationQuality Control at ORFEUS Data Center
Quality Control at ORFEUS Data Center Reinoud Sleeman ORFEUS Data Center sleeman @ knmi.nl IRIS / ORFEUS Workshop Understanding and Managing Information from Seismological Networks 28 Feb 4 Mar 2005, Palmanova,
More informationThe Three-dimensional Propagation of Tsunami-Generated Internal Waves in the Atmosphere
The Three-dimensional Propagation of Tsunami-Generated Internal Waves in the Atmosphere Yue Wu, Stefan G. Llewellyn Smith, James W. Rottman, Dave Broutman and Jean-Bernard H. Minster Abstract Department
More informationGreen s Function Extraction from Ambient Seismic Field: Analysis of Seasonal Variations
Green s Function Extraction from Ambient Seismic Field: Analysis of Seasonal Variations Sutton Chiorini 1 Supervisor: Kazuki Koketsu 2 Supporter: Loïc Viens 2 1 University of Maryland, College Park, U.S.A,
More informationRECOMMENDATION ITU-R P The prediction of the time and the spatial profile for broadband land mobile services using UHF and SHF bands
Rec. ITU-R P.1816 1 RECOMMENDATION ITU-R P.1816 The prediction of the time and the spatial profile for broadband land mobile services using UHF and SHF bands (Question ITU-R 211/3) (2007) Scope The purpose
More information27th Seismic Research Review: Ground-Based Nuclear Explosion Monitoring Technologies
IMPROVING M s ESTIMATES BY CALIBRATING VARIABLE PERIOD MAGNITUDE SCALES AT REGIONAL DISTANCES Heather Hooper 1, Ileana M. Tibuleac 1, Michael Pasyanos 2, and Jessie L. Bonner 1 Weston Geophysical Corporation
More informationHere I briefly describe the daily seismicity analysis procedure: Table 1
A: More on Daily Seismicity Analysis Here I briefly describe the daily seismicity analysis procedure: Table 1 The broadband continuous data set was acquired as hour-long files. For this purpose I wrote
More informationMaster event relocation of microseismic event using the subspace detector
Master event relocation of microseismic event using the subspace detector Ibinabo Bestmann, Fernando Castellanos and Mirko van der Baan Dept. of Physics, CCIS, University of Alberta Summary Microseismic
More informationIonospheric multiple stratifications and irregularities induced by the 2011 off the Pacific coast of Tohoku Earthquake
LETTER Earth Planets Space, 63, 869 873, 2011 Ionospheric multiple stratifications and irregularities induced by the 2011 off the Pacific coast of Tohoku Earthquake Takashi Maruyama 1, Takuya Tsugawa 1,
More informationGeophysical Journal International
Geophysical Journal International Geophys. J. Int. (2014) 197, 458 463 Advance Access publication 2014 January 20 doi: 10.1093/gji/ggt516 An earthquake detection algorithm with pseudo-probabilities of
More informationFOURIER SPECTRA AND KAPPA 0 (Κ 0 ) ESTIMATES FOR ROCK STATIONS IN THE NGA-WEST2 PROJECT
10NCEE Tenth U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering July 21-25, 2014 Anchorage, Alaska FOURIER SPECTRA AND KAPPA 0 (Κ 0 ) ESTIMATES FOR ROCK STATIONS IN
More informationGround Mo1on Database for SCRs: Development, and Products
Ground Mo1on Database for SCRs: Development, A@ributes, and Products By Chris H. Cramer A presenta1on at the NGA East Special Session at SMiRT- 22 August 23, 2013 Goal: ground motions and metadata for
More information(i) Understanding the basic concepts of signal modeling, correlation, maximum likelihood estimation, least squares and iterative numerical methods
Tools and Applications Chapter Intended Learning Outcomes: (i) Understanding the basic concepts of signal modeling, correlation, maximum likelihood estimation, least squares and iterative numerical methods
More informationEWGAE 2010 Vienna, 8th to 10th September
EWGAE 2010 Vienna, 8th to 10th September Frequencies and Amplitudes of AE Signals in a Plate as a Function of Source Rise Time M. A. HAMSTAD University of Denver, Department of Mechanical and Materials
More informationAC Theory and Electronics
AC Theory and Electronics An Alternating Current (AC) or Voltage is one whose amplitude is not constant, but varies with time about some mean position (value). Some examples of AC variation are shown below:
More informationA hybrid method of simulating broadband ground motion: A case study of the 2006 Pingtung earthquake, Taiwan
A hybrid method of simulating broadband ground motion: A case study of the 2006 Pingtung earthquake, Taiwan Y. T. Yen, C. T. Cheng, K. S. Shao & P. S. Lin Sinotech Engineering Consultants Inc., Taipei,
More information