Southern California Earthquake Data Center

SCEDC Web Services



Service interface Version Summary Return options
station v1.1 metadata for waveform time series stored
    FDSN StationXML
dataselect v1.1 waveform time series miniSEED
event v1.1 event catalog webservice
availability v1.0 waveform availability webservice



Service interface Version Summary Return options
webstp v1.0
    SCEDC earthquake catalog
    SCEDC phase data
    continuous waveform time series
    triggered waveform time series
sacpz v1.0
    Poles and zeros of instrument response in SAC ASCII format.
resp v1.0
    Instrument response in RESP format.

Web services can be accessed in a number of different ways:

  • Small requests can be handled through your browser.
  • Dedicated clients are available for making more complex or larger queries:
    • IRIS Fetch scripts : Command line scripts for accessing data via web services. See below for SCEDC specific info. Information on using the scripts with other data centers is available here
    • irisFetch.m : A MATLAB library created by IRIS that allows direct access to data. More info about it can be found here
    • ObsPy : The ObsPy project is dedicated to providing a Python framework for processing seismological data. Included in this framework is the capability to retrieve data from FDSN web services
  • Automated or scripted requests can be made using programs such as wget or curl.

    Note : For POST users, there are known issues with wget v1.12 and https. This version does not correctly handle some properties in SSL certificates and may fail with the error ERROR: certificate common name doesn't match requested host name. We recommend upgrading to a higher version of wget or using curl instead.

Using IRIS Fetch scripts with SCEDC webservices

  • Download the latest version of the IRIS Fetch scripts here. SCEDC web services support FetchData, FetchEvent and FetchMetaData. FetchSyn is not supported. More info on IRIS Fetch scripts can be found here.
  • Rename the script to remove the version extension. (e.g. 'mv FetchData-2013.077 FetchData')
  • Make the scripts executable (e.g 'chmod +x FetchData').
  • Download the wrapper scripts FetchData-SCEDC, FetchEvent-SCEDC and FetchMetaData-SCEDC as needed.
  • Make the wrapper scripts executable.
  • Run the wrapper scripts without any command line options to see usage.