Hi Wendee,
The best way to retrieve the last 6 months of onshore/offshore data for the west coast of the United States is to make a SesmiQuery BREQ_FAST request. This method is preferred over using the web services because of the large size of this request.
You can make a BREQ_FAST request by filling out the form at
http://ds.iris.edu/SeismiQuery/breq_fast.phtml. The manual for BREQ_FAST may be found at
https://ds.iris.edu/ds/nodes/dmc/manuals/breq_fast/.
For your particular request, you will have to apply a geographic constraint using the latitude/longitude map widget on the SesimiQuery BREQ_FAST form, as well as, a start-time & end-time constraint. I also suggest selecting DMC Archived Waveforms for the “query over” option, as this looks for available data by scanning the waveform archive rather than querying station metadata.
Once you submit the SeismiQuery BREQ_FAST request form, you will presented with another screen where you can review the constructed request, as well as, select an output data format. It is a good idea to spend some time reviewing your request, as there may be certain data that you are uninterested in, such as the synthetic network (SY). If there are any data that you don’t want from you request, you should resubmit the
http://ds.iris.edu/SeismiQuery/breq_fast.phtml form with the unwanted data removed.
Once your request is complete you will receive an email containing a link to our FTP site where you can download the data from. You can also view the status of your request on the following page
http://ds.iris.edu/ds/nodes/dmc/data/request-status/.
Let me know if you have any questions.
Thanks,
Nick
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Nick Falco
Web & Apps Developer
IRIS Data Management Center
nick<at>iris.washington.edu
Wendee Hewitt
Nick Falco
