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- 1. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Software forSeismic and Vibration AnalysisFor Noise Studies, Seismic Signal Analysis,Vibration Studies and GeotechnicalApplicationsRaman K. AttriJan 2004rkattri@rediffmail.com© Copyright 2009 – Raman. K. AttriR. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004
- 2. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Seismic Waveform© Copyright 2009 – Raman. K. Attri
- 3. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Seismic ParametersFOCALDEPTHEQ Observationmonitoring PointPlace exactlyabove EpicenterEPICENTREDISTANCEDirectionof EQEQ GenerationPoint(EPICENTRE)EarthSurfaceHYPO-CENTREDISTANCE© Copyright 2009 – Raman. K. Attri
- 4. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Seismic Waveform AttributesP-Wave(Primary)S-Wave(Secondary)Normalnoise levelStart timeof P-waveStart timeof S-waveS-P TimeCoda Length in sec© Copyright 2009 – Raman. K. Attri
- 5. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Seismic ComputationsEPICENTRAL DISTANCE : Distance of Pointof Monitoring and Point exactly aboveepicenter)EPICENTRE DISTANCE (in Deg) Δ= From Standard Lookup table of S-P Time inSecondsEPICENTRAL DISTANCE (in Km) = 111.1 x Δ© Copyright 2009 – Raman. K. Attri
- 6. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004CODA LENGTHD= Time in Seconds starting from P-wavetime to the end of wave up to noise levelCODA MAGNITUDEMD= -0.57 + 1.38 log D + 0.29 Δ© Copyright 2009 – Raman. K. AttriSeismic Computations
- 7. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004RITCHET SCALEUniversally earthquake is measured in Ritchet Scale.RITCHET SCALE MAGNITUDER = log (A / T) + Δ + CA is amplitude of highest S-wave Peak, T is the timeperiod of the same peak. C is place specific constantS-waveAT © Copyright 2009 – Raman. K. Attri
- 8. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Facts about Ritchet Scale© Copyright 2009 – Raman. K. Attri
- 9. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Seismic Analysis ProcessSDRAstoredPC fileSoftwareSeismologistInference&computations0001001110011© Copyright 2009 – Raman. K. Attri
- 10. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Setup with Seismic AnalysisSoftwareSignalConditionerA/DConverterDataStoragePCSoftwareAmplified Filtered SignalConverted Digital DataDataDownload toPCEarth layervibrationsSensed SeismicSignalSEISMIC DATA ACQUISTION SYSTEM© Copyright 2009 – Raman. K. Attri
- 11. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Purpose of Seismic AnalysisSoftware• Seismic Profile Study for ascertainingseimiticity and tendency of a site formajor earthquakes• Identification of Earthquake prone sites• Noise level studies of monitored earth’activities• Analysis of Industrial and environmentalVibrations• Seismological computations to calculateRitchet Scale, Coda Magnitude andEpicenter Distance• Seismic inference and predictions (aftercoupling with the results of analysisfrom other methods.)© Copyright 2009 – Raman. K. Attri
- 12. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Features of Software• Easy and fast viewing of the recorded signaland events along-with the auxiliaryinformation.• Precise time determination of any event orpoint of interest with the help of movingcursor.• Zooming the low-level signal to full screen toview and analyze the wave-shape of signalclosely for Noise level studies.• Selecting the desired signal for detailedanalysis and observation• Picking the time of arrival of P-wave and S-wave, which is an important parameter to• Computation of epicenter distance, CodaMagnitude, Ritchet Scale and Arrival times ofS and P waves.© Copyright 2009 – Raman. K. Attri
- 13. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004Seismic Software Structure
- 14. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004© Copyright 2009 – Raman. K. AttriSeismic Software Interface
- 15. R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004R. Attri Instrumentation Design Series (Seismic), Paper No. 4, Jan 2004© Copyright 2009 – Raman. K. AttriAuthor’s contactFor any questions or training queries, contact the author:Raman K. Attrirkattri@rediffmail.comhttp://sites.google.com/site/ramankumarattriAuthor has over 15 years of project management, product development and quality managementexperience in leading MNC product development corporations. He has earned numerousinternational certification awards - Certified Management Consultant (MSI USA/ MRA USA),Certified Six Sigma Green Belt Professional (Six Sigma India), Certified Quality Director (ACIUSA), Certified Engineering Manager (SME USA), Certified Project Director (IAPPM USA), toname a few. His research and training interests are in learning, development, performancemanagement, research management and product development. He holds MBA, Executive MBA,Masters in Technology and Bachelor in Technology. In addition to this, he has 60+ educationalqualifications, credentials and certifications in his name..

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