Overview

SeisGram2K is an easy-to-use, platform-independent, Java software package for interactive visualization and analysis of earthquake seismograms. SeisGram2K runs and reads data files locally and over the Internet.

Features of the viewer include:

  • direct reading of trace data files over the Internet
  • direct, interactive reading of trace data from a Buffer of Uniform Data (BUD) directory
  • Internal browser for opening trace data files on a web server
  • reading data in SAC binary and ascii, GSE21, mini-SEED, SEED (preliminary), strong-motion and other formats:
  • (SAC_BINARY, SAC_ALPHA, SG2K_ASCII, FULL_SEED, MINI_SEED, MINI_SEED_BUD, GSE21, WAV, QCNLIVE_CSV, USGS_SMC, NIED_KNET, CDMG_CSMIP, PEPP, TITAN, FVGN, DEPREM_ASCII, SEESLO, DART)
  • interactive zooming, scaling, rotation and transformation of the seismograms
  • time and amplitude picking
  • time-domain mean-removal, integration and differentiation
  • frequency domain filtering and processing
  • spectral display
  • interactive spectrogram display
  • interactive, travel-time display with trace overlay
  • helicorder display
  • multi-component analysis tools (Polarisation analysis, vector operations, ...)
  • animated, 3D particle motion visualization
  • command-line access to processing functions
  • multiple languages
  • integrated help menus
  • a "school" mode which displays a sub-set of program options
  • reading gzip compressed data files, and "little" and "big-endian" binary byte ordering
  • sending picks to a remote process or URL (cgi-bin, Java servlet, ...)
  • frequency domain transfer function removal/addition
  • SeisGram2K can be launched directly from the SeisGram2KXX.jar archive file.
  • SeedLink support and SeedLink Monitor mode (see MEREDIAN Java SeedLink development)
  • Header information editor

Source code: http://alomax.net/projects/java

  • Homepage: http://alomax.net/seisgram
  • Category: Data Processing
  • Language: Java
  • Keywords:

    interactive, visualization, analysis, seismogram, SAC, miniseed, WAV, picking, spectrogram, frequency domain, helicorder, particle motion, education, applet, Java, NonLinLoc

  • Citation:

    Lomax, A. and A. Michelini (2009), Mwpd: A Duration-Amplitude Procedure for Rapid Determination of Earthquake Magnitude and Tsunamigenic Potential from P Waveforms, Geophys. J. Int.,176, 200-214, doi:10.1111/j.1365-246X.2008.03974.x

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Manager: Anthony Lomax