Southern California Earthquake Data Center

Research Tools

Waveform Data

Seismogram Transfer Program (STP)


*** We are planning on discontinuing the old web STP on Jan 1st, 2015. Please use the waveform web service, available via the Waveform Data page, instead.***

What Is STP?
"STP" is a client side program for retrieving waveform data for seismic events from the Southern California Earthquake Data Center. This program can be used via this WWW graphical interface or as a standalone program running on the users local computer. If you have questions, please visit: frequently asked questions.


The STP User Manual (Version 1.01) is now available.


Standalone Version of STP Program recommended for repeated searching of archive
The program can be run standalone on the user's local computer by downloading the software from our product download page. Users who use the standalone version of the software can retrieve the waveforms directly to their local machine.


The newest version of the standalone STP client is 1.6.2. This version corrects a bug that caused a segmentation fault on 64-bit machines when the main STP server was overloaded.


Web Service Version of STP Program
Users can also download triggered and continuous data through our web service. Event phase data is available as well. Users can also use wget or curl to programmatically retrieve data from this service.


Will be deprecated Jan 1,2015: Graphical Interface to STP Program

Please Note: Please use the web service form instead. Please email us to inform us of any problems you encounter, or if you have suggestions on how we can improve this interface. Thank you!


In order to use this graphical interface to STP, please enter your full name in the following format (first.last) in the box below and click the START button to begin using STP!



Waveforms retrieved via this graphical interface to stp can be downloaded from the anonymous ftp site. This can be done from the interactive page itself, or by manually running ftp and retrieving the data from pub/stpdata/"username" on NOTE: Waveform files will be deleted from the ftp site 24 hours after they have been retrieved. HAPPY WAVEFORM RETRIEVING!