Seismic Toolkit is a tool for processing and displaying seismic signal data in a graphical interface. It reads seismic signals in SAC format, and provides a variety of signal processing, such as filtering, spectral analysis, polarisation analysis, time-frequency representation, Hilbert transform, and singular value decomposition. Some utilities are included for useful seismological applications, like computation of Seismic Moment Mo, Mantle magnitude Mm and Moment magnitude Mw, MTPA spectral analysis, plotting focal mechanisms, computation (and plotting) of instrumental response from poles and zeros, and some usefull GMT (Generic Mapping Tool) scripts for plotting signals, responses, and time-frequency in Postscript files for high quality prints. License: GNU General Public License (GPL) Changes: Parameter dialog boxes may now be proceeded with the "Enter" key. Closing the parameter dialog boxes (via ESC or close button) no longer causes a crash. A potentially incorrectly auto-detected endianness of binary SAC files (due to wrong IFTYPE range) was fixed. Byte-swapping is performed only on numerical values. When globbing input_files, a native function (glob_files) is used insted of calling external programs (ls/dir). When dealing with memory allocations, Glib's malloc functions are used. Various code cleanups were done.

	Read more at FreshMeat
	www.pheedo.com/click.phdo?i=e71d4adb9d90a5e14dafe07ed056ad04