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Hello Bruce,<br>
<br>
Thanks for the information and quick fix. I have checked a few
traces and all show correctly the Z component inclination.<br>
<br>
Great!<br>
<br>
Ciao,<br>
<br>
Anthony<br>
<br>
<div class="moz-cite-prefix">On 2012/07/17 20:10, Bruce Weertman
wrote:<br>
</div>
<blockquote
cite="mid:BB2FDBEE-3899-4CEF-91B0-28F0CC6FD4B5@iris.washington.edu"
type="cite">
<pre wrap="">Anthony:
Thanks for pointing out the problem with the incorrect component incident angles.
This problem was caused by a typo in the source code for the ws-tracedsp webservice.
Buried in the code, "depth" was being used instead of "dip" !
Sorry about that.
The problem has been fixed in the new version of ws-tracedsp (1.4.5) which is now in production.
This in turn fixes the problem win ws-timeseries.
There is no reason to believe that this issues is related to the problem that Philip Crotwell reported (see below).
Please note: cached data on our side may continue to report incorrect values for the hour until the cache is flushed out.
Cheers,
Bruce Weertman
--------------------------------------
Software Engineer
IRIS DMC
1408 NE 45h St, Suite 201
Seattle, WA 98105
<a class="moz-txt-link-abbreviated" href="mailto:bruce@iris.washington.edu">bruce@iris.washington.edu</a>
(206) 547-0393
On Jul 17, 2012, at 12:51 AM, Anthony Lomax wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi all,
I see a possibly related problem with channel inclination. The following request should return a BHZ channel, but the component inclination in the sac header is 90.0 - my understanding from the SAC manual is that this should be 0.0 for Z component UP:
CMPINC F Component incident angle (degrees from vertical).
<a class="moz-txt-link-freetext" href="http://www.iris.edu/ws/timeseries/query?net=IU&sta=MAKZ&loc=00&cha=BHZ&start=2012-07-17T07:28:26.02&dur=844&output=sacbl">http://www.iris.edu/ws/timeseries/query?net=IU&sta=MAKZ&loc=00&cha=BHZ&start=2012-07-17T07:28:26.02&dur=844&output=sacbl</a>
Part of the sac header.
CMPAZ = 0.0
CMPINC = 90.0
KSTNM = MAKZ
KCMPNM = BHZ
KNETWK = IU
Thanks,
Anthony
On 2012/07/16 22:29, Philip Crotwell wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi
I have been doing some tests with the dataselect web service from a
multithreaded client (SOD) and found that occasionally I would get
data records back in one thread that were not the channel asked for.
Luckily I had a check in place from some earlier issues that compared
the channel codes in the request with those in the result. Here is an
example. It appears that the thread that requested data from BORG got
data from ARU.
2012-07-16 15:51:26,794 - Channel id in returned seismogram doesn not
match channelid in request.
req=II.1986-01-01T00:00:00.000GMT.BORG.00.BHZ.2003-08-29T00:00:00.000GMT
seis=II.1986-01-01T00:00:00.000GMT.ARU.00.BHZ.2003-08-29T00:00:00.000GMT
The request, if it helps, was
net=II&sta=BORG&loc=00&cha=BHZ&start=2009-05-16T01:08:44&end=2009-05-16T01:26:26
This is a bit scary as I suspect many clients do not check the
returned data to make sure it actually corresponds to their original
request. I have not seen this with a single threaded client, so
perhaps that is a clue.
I will try to do some more testing and see if I can provide any more details.
thanks,
Philip
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<b style="color:darkred; font-size:larger">Anthony Lomax</b> <br>
<b style="color:dimgray;">161 Allée du Micocoulier, 06370
Mouans-Sartoux, France</b> <br>
<b style="color:dimgray;"> tel: +33 (0)4 93 75 25 02
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</b> <br>
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<b style="color:darkgreen;">Science & Special Topics: </b>
<b style="color:dimgray;"><a href="http://www.alomax.net/science">http://www.alomax.net/science</a></b>
<br>
<b style="color:darkgreen;">ALomax Scientific: </b> <b
style="color:dimgray;"><a href="http://www.alomax.net/alss">http://www.alomax.net/alss</a></b>
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