Accessing Seismic Data

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Accessing Seismic Data

IRIS URL Builder

1. Go to: http://service.iris.edu/irisws/timeseries/docs/1/builder/
2. Select the URL Builder tab
3. Enter fields as outlined below for Alva’s seismic station

· Network: GS
· Station: OK035
· Location:
      o 00 (for broadband)
      o 20 (for strong motion)
· Channels (for broadband only)
      o HHZ (vertical motion)
      o HH1 (north-south motion)
      o HH2 (east-west motion)
· Channels (for strong motion only)
      o HNZ (vertical motion)
      o HN1 (north-south motion)
      o HN2 (east-west motion)
· Start/End Times
      o Select dates from the drop down menu
      o Modify the time to get at specific events (convert time to 24hr time, then add 6 hours)
           * Example: a 10:30 PM quake’s time on January 6th in Oklahoma should be T04:30:00 on January 7th in the
              search queue
· Make sure “Plot” is selected from the Output option near the bottom right of the screen
· Leave other fields/checkboxes as they are at first, you can experiment with them later to see what they do
· The link at the bottom of the page will display the plot! This link can also be copied and shared with others.

Software for managing raw data: Dimas
Dimas uses the “miniseed” output data on the URL Builder described above.

To access other seismic station data around the globe, go to http://ds.iris.edu/mda (or Google search IRIS MDA). GS is the US Geologic Survey’s network. Alva’s station is OK035.

Questions? Dr. Steve Maier, (580) 327-8562 or sjmaier@nwosu.edu