[obspy-users] ISC XML problem

Piero Poli ppoli at mit.edu
Fri Jul 8 16:13:54 CEST 2016


Hi Lion,

Just that you know, ISC changed the xml on the website after I reported
them the problem. With the new one the warning is gone,

Piero

On 7/7/16, 4:20 AM, "Lion Krischer" <krischer at geophysik.uni-muenchen.de>
wrote:

>Hi Piero,
>
>I confirm your finding that the ISC FDSN client only contains events
>until 2012 but I have no idea why that is. Maybe someone else does?
>
>If you use `Client("ISC")` in ObsPy it just connects to a mirror at IRIS
>(http://isc-mirror.iris.washington.edu) - maybe the mirror is not
>updated anymore? But I also could not find an official fdsnws event
>service of ISC.
>
>On the other hand it would be quite simple to add an ISC specific client
>to ObsPy - I added a new issue on Github if somebody wants to tackle it:
>https://github.com/obspy/obspy/issues/1470
>
>Cheers!
>
>Lion
>
>
>
>On 07/07/16 01:55, Piero Poli wrote:
>> Hi Lion,
>> 
>> Thanks for the quick answer. You are right the catalog is parsed, but
>>is a
>> mess.
>> 
>> I think is easier if I go straight to my problem. I want go get the ISC
>> catalog and use the event time to download data. I was using the XML
>>from
>> the ISC website because using the client only earthquakes before ~2012
>>are
>> retrieved. Do you know why? I guess is because only reviewed events are
>> considered in the catalog from the client. There is an alternative way
>>to
>> use the client to access the routine solution of the ISC catalog?
>> 
>> Thanks,
>> 
>> Piero
>> 
>> On 7/6/16, 3:18 PM, "Lion Krischer" <krischer at geophysik.uni-muenchen.de>
>> wrote:
>> 
>>> Hi Piero,
>>>
>>> that's just a warning. ObsPy should still have parsed the file and
>>>given
>>> you a Catalog object to work with.
>>>
>>> It means that the resource id 'smi:ISC/magid=603896613' is used twice
>>>in
>>> whatever QuakeML file you passed to it. This is most likely an error
>>> within the QuakeML file - it should be very easy to check by just
>>> grepping over the file - best inform the ISC guys so they fix it on
>>> their side.
>>>
>>> Depending on what you want to do you might or might not be able to
>>>still
>>> use the file - if you rely on the particular relation that exists twice
>>> within the QuakeML file then you cannot use it.
>>>
>>> Cheers!
>>>
>>> Lion
>>>
>>>
>>>
>>> On 06/07/16 20:59, Piero Poli wrote:
>>>> Hello,
>>>>
>>>> I recently found a problem using quakeXML. If I read XML files
>>>>generated
>>>> from the USGS page the reader is working, while for the one generated
>>>> from ISC webpage are not readable in obspy. A typical error message I
>>>> got is:
>>>>
>>>> lib/python2.7/site-packages/obspy/core/event/base.pyc:325:
>>>>UserWarning:
>>>> The resource identifier 'smi:ISC/magid=603896613' already exists and
>>>> points to another object:
>>>> 
>>>>'Magnitude(resource_id=ResourceIdentifier(id="smi:ISC/magid=603896613")
>>>>,
>>>> mag=4.1, magnitude_type='mb',
>>>> origin_id=ResourceIdentifier(id="smi:ISC/origid=602996724"),
>>>> station_count=28, creation_info=CreationInfo(author='NEIC'))'.It will
>>>> now point to the object referred to by the new resource identifier.
>>>>
>>>>  
>>>>
>>>> 
>>>>|j?S(N(tget_referred_object(R&((sN/Users/pieropoli/anaconda/lib/python2
>>>>.7
>>>> /site-packages/obspy/core/event/base.pytgetReferredOb
>>>>
>>>>
>>>> --------------------------
>>>>
>>>> Thanks,
>>>>
>>>>
>>>> Piero
>>>>
>>>>
>>>>
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