Thread: Re: missing azimuth in metadata for WY.YDD

Started: 2022-08-16 14:39:32
Last activity: 2022-08-16 14:39:32
Un Joe
2022-08-16 14:39:32
Hi Philip,

This appears to be an issue with Station Services since it should return the assigned “0” Azimuth value. This has been duly noted and will probably end up in the next maintenance to be performed on Station Services sometime in the future.

Thanks again for bringing this to our attention and please do not hesitate to report anymore anomolies you run across.


On Aug 16, 2022, at 1:51 PM, Philip Crotwell <crotwell<at>> wrote:


Thanks for checking on this. If it was set to have Azimuth of zero in the uploaded metadata, and it is missing from the output of the fdsn station web service, then do you think it was somehow deleted from your database, or a problem with the web service?

I do not see the channel as have an Azimuth element in the output stationxml, here:


On Tue, Aug 16, 2022 at 4:36 PM un <un<at> <un<at>>> wrote:
Hi Philip,

Upon investigation of the missing <azimuth>, we discovered the value was not missing in the original WY.YDD metadata that was uploaded as it was given a “0” value which is acceptable:


Thank you for taking the time to share your concerns on this matter. Hopefully this solves the issue although it may not be what you had expected.


On Aug 15, 2022, at 10:48 AM, un <un<at> <un<at>>> wrote:

Thanks Philip,

I’ll contact the WY folks and let them know. I’m sure they’ll appreciate this as well.

Seattle, WA 98115

On Aug 15, 2022, at 10:36 AM, Philip Crotwell (via IRIS) <qa-issues-bounce<at> <qa-issues-bounce<at>>> wrote:


The stationxml metadata for WY.YDD.01.BHZ is missing the <azimuth> element.

While technically the <azimuth> element is not required in stationxml, it is a little weird to have <dip> but not <azimuth>, especially for a seismic channel like BHZ.

Thought you might be able to pass this on to the network operators.


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