[webservices] Unreadable file format for miniseed data from web services

Alessia Maggi alessia.maggi at unistra.fr
Tue Feb 15 08:38:06 PST 2011


Dear Webservices people,

I am having difficulty reading the miniseed files obtained through webservices.  I have tried several methods of obtaining the data, from straight http requests, to the Perl client scripts, to wget requests on the bulkdataselect service...  

Every time, the miniseed files are incorrectly formatted, so qmerge and sdrsplit refuse to work:

e.g.

alessia at makalu:~$ qmerge -nv IU.ANMO.00.BHZ.2010.058.06.30.00.000-2010.058.10.30.00.000.miniseed
Error: unrecognizable input file IU.ANMO.00.BHZ.2010.058.06.30.00.000-2010.058.10.30.00.000.miniseed

alessia at makalu:~$ sdrsplit -C IU.ANMO.00.BHZ.2010.058.06.30.00.000-2010.058.10.30.00.000.miniseed 
unknown header type: -1

The files have an integer number of 4096 byte blocs, and seem to start with somewhat correct blocs (as far as I can tell using od -c)...

Do you have any ideas?  Any help would be gratefully received!

Alessia

PS: I attach an example of a miniseed file obtained by clicking on the following url from the http://www.iris.edu/ws/dataselect/ webpage

  http://www.iris.edu/ws/dataselect/query?net=IU&sta=ANMO&loc=00&cha=BHZ&start=2010-02-27T06:30:00.000&end=2010-02-27T10:30:00.000




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