Properties of butterworth filters as used in my record. Bap basic strongmotion accelerogram processing software, version 1. Converse and brady, 1992 developed and used by the nsmp to process earthquake strong motion records. Bap basic strongmotion accelerogram processing software version 1. Books and openfile report section distributor denver, colo. Routine computer processing of strongmotion accelerograms. Sd peak spectral displacements at different fixed frequencies of the measured earthquake shaking. Baseline correction of vibration acceleration signals with. Pdf strong motion data processing is necessary to evaluate reliable ground motion for standard or specific applications. Sma strong motion analyst processing software is a commercial.
Hutt3 introduction this openfile report releases several software modules for public use. Sma strong motion analyst processing software is a commercial windows based tool designed to interactively process strong motion accelerograms, featuring. Us geological survey open file report 92296a, 1992. Basic strongmotion accelerogram processing software version 1. Pdf prism automatically processes raw groundmotion acceleration records to generate data products that include corrected acceleration.
Pga peak ground acceleration, pgv peak ground velocity and spectral characteristics i. Sorry, we are unable to provide the full text but you may find it at the following locations. The basic strong motion accelerogram processing bap software written by the usgs converse and brady 1992 or derivatives are commonly used for the routine. Basic strongmotion accelerogram processing software by april m. Graizer, strong motion recordings and residual displacements. Several codes for strong motion data processing have been made available since the early 90s.
Basic strongmotion accelerogram processing software bap converse 1992, contains routines for signal processing, fourier amplitude spectra evaluation. There are many schemes available for processing strongmotion data and it is important to be aware of the. Basic strongmotion accelerogram processing software bap converse 1992, contains routines for signal processing, fourier amplitude spectra evaluation and response spectra calculation. Strong motion data processing smd various geosig instruments can provide parametric information containing the peak values i. Bap basic strongmotion accelerogram processing software. Because of various reasons, the baseline drift in the strong motion accelerogram was often founded, especially in the nearfault accelerogram. A new opensource software for strong ground motion data processing. Sma strong motion analyst processing software is a commercial windows. United states department of the interior geological survey, 1992. Sma strong motion analyst processing software is a commercial windows based tool designed to interactively process strong motion accelerograms. The baseline drift could lead to the unreliable velocity and displacement obtained by the accelerogram integration without or with improper specialized baseline correction. The paper presents an application of digital filtering in data processing of acceleration records from earthquakes.
Boore introduction these are some informal notes showing results of some procedures used in the processing of strong motion data. There are many schemes available for processing strongmotion data and it is important to be. The programs are presented in five groups corresponding to the processing scheme developed at. Strong motion recordings are the key in many earthquake.
Statistical analysis of strongmotion accelerograms and. Graizer, determination of the true ground displacement by using strong motion records, izvestiya phys solid earth, 15 1979 875885. Software packages capable to address the need for strong motion record processing belong to two main categories. The data set used for this study was therefore reduced to 161 records see table i and fig.
Clanguage software for computing strong ground motion metrics and seismograph self noise by 1j. Properties of butterworth filters as used in my record processing software tspp by david m. This first report is the initial step in a continuing data processing program which will ultimately include all past recorded earthquakes as well as current data as it is collected. An algorithm developed in matlab for the automatic selection of cut.
This report contains short descriptions, flow charts and listings of the computer programs that are currently being used for routine processing of strong motion accelerograms at the earthquake engineering research laboratory of the california institute of technology. Bap basic strongmotion accelerogram processing software sudoc i 19. A dataset under investigation includes accelerograms from three stations, located in turkey dinar, izmit, kusadasi, all working with an analogue type of seismograph. Analysis of strong ground motions to evaluate regional. Most of these informal notes are devoted to a comparison of causal and acausal lowcut. Clanguage software for computing strong ground motion.
The processing engine is integrated into the gui to help ensure consistency in processing. Open file report 92296a, united states department of the interior, united states geological survey, denver, co. Butterworth, chebyshev, and bessel filters with different orders are considered to eliminate the frequency noise. For dealing with the problem, in the study, the various reasons causing the. No warrantees, implied or explicit, are given for this software.
Basic strongmotion accelerogram processing software. This software includes a routine hicut for highcut. Effects of digital filtering in data processing of seismic. Bap will calculate velocity and displacement from an input acceleration time series or it will calculate acceleration and displacement from an input. Basic strongmotion accelerogram processing software responsibility by april m. The basic strong motion accelerogram processing bap software written by the usgs converse and brady, 1992 or derivatives are commonly used for the routine. The prism software consists of two major components. What are we actually recording in strong motion seismology.
Rain and storm water harvesting for additional water. Basic strongmotion accelerogram processing software bap the basic strong motion accelerogram processing bap computer program was developed at the u. During processing of the data, the filters used are a cosine taper from 45 to 50 hz and an acausal butterworth with a corner of 0. Time series processing programs tspp boore 2008, is a collection. Prism incorporates many of the processing techniques implemented in its predecessor, the software program bap basic strong motion accelerogram processing 1.
Strong motion earthquake accelerograms, digitized and. Geological survey usgs to process and plot digitized strong motion earthquake records. Basic strongmotion accelerogram processing software bap. Douglas j 2003 what is a poor quality strong motion record. Preface to the series the object of the present series is to make available accurate digitized data prepared in a uniform way for all recorded strong motion earthquakes. By bap basic strongmotion, accelerogram processing software, april m. Bradybap basic strongmotion accelerogram processing software. Converse and brady, 1992, and to california strong motion instrumentation program csmip processing shakal and others, 2003, 2004.
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