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SOSA: An application for the analysis of synthetic and observed seismograms

SOSA: An application for the analysis of synthetic and observed seismograms. Joanna Muench (IRIS), Philip Maechling (USC), Linus Kamb (IRIS) and Tim Ahern (IRIS). Introduction. The problem: Comparing synthetic to observed seismograms requires many tools

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SOSA: An application for the analysis of synthetic and observed seismograms

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  1. SOSA: An application for the analysis of synthetic and observed seismograms Joanna Muench (IRIS), Philip Maechling (USC), Linus Kamb (IRIS) and Tim Ahern (IRIS)

  2. Introduction • The problem: Comparing synthetic to observed seismograms requires many tools • Retrieve observed from data centers and convert. • Retrieve synthetics locally or from SRB and convert. • Run processing routines, sometime different packages. • No record of source of data or processing steps applied. • The solution: Synthetic and Observed Seismogram Analysis (SOSA) • Provides single interface for retrieval of synthetic and observed seismograms. • Has many common analysis routines, and ability to import custom defined processes. • Automatically generates metadata with data source and processes applied.

  3. Retrieval • Observed seismograms • SOSA communicates with data centers via a Data Handling Interface (DHI). • DHI installed at four major data centers, including SCEDC and IRIS DMC. • Links search results to related simulations. • Synthetic seismograms • Accesses simulation stored in SRB via DDDS • Retrieves seismograms with simulation metadata. • Local files • Current support SAC and mSEED file formats.

  4. Observed Seismograms - Events

  5. Observed Seismograms - Channels

  6. Observed seismograms

  7. Analysis • Observed and synthetic seismograms treated identically. • Provide support for basic analysis routines • Resampling, filtering, rotation, convolution, correlation, etc. • Results appear in new window, allows backtracking. • Processed seismograms can be saved with metadata detailing the processing steps and original source of data.

  8. Processing

  9. SOSA and distributed computing

  10. Status • Currently released at version 1.1 • Next version will be part of web services initiative • Likely to exist as web portlet

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