Quake Catalogue - Occasional amplitude information missing from the event xml

segburg commented 3 years ago

I encountered a few event xml files for which amplitude informations are missing. Contributing station magnitudes are included, and refer to Mlv amplitude Ids, which are missing.

The publicids with missing amplitude informations are below, but there could be more: 2013p545297.xml 2014p051690.xml 2014p052015.xml 2014p052498.xml 2014p354109.xml 2014p004933.xml 2014p051854.xml 2014p052055.xml 2014p242353.xml 2014p008685.xml 2014p051920.xml 2014p052137.xml 2014p258757.xml

salichon commented 3 years ago

thanks @segburg

[x] Detail the missing bits of amplitude information
[x] Investigate the reason(s)
[x] Track if it is a systematic feature and list the affected other events -->> occasional cause to detail ( event list as in https://github.com/GeoNet/help/issues/78#issuecomment-756532665 )
[ ] Test if the actual ampliude measurement can be restored
[ ] Address the event update mechanism in AWS and if updating the event archive with completed information is relevant FYI @elidana @JonoHanson

future discussion and work in Geonet/tickets: https://github.com/GeoNet/tickets/issues/7736

Finalisation here - when understood and done

salichon commented 3 years ago

@segburg would you mind to precise the entire time window of investigation you worked on in order to identify if this could be associated to a unique period of time ? thanks a lot

segburg commented 3 years ago

I was looking at 2012-2020

segburg commented 3 years ago

There is also this event with an origin id but nothing else: https://service.geonet.org.nz/fdsnws/event/1/query?eventid=2019p431888. Quakesearch returns more complete information though: 2019p431888,earthquake,2019-06-09T19:10:11.104Z,2019-06-09T19:13:33.266Z,176.2471619,-38.20523834,3.188777932,142.2965698,M,,LOCSAT,confirmed,manual,iasp91,47,41,75,0.05085235834,46.94885254,0.5494196773,0

[x] reason found see: https://github.com/GeoNet/tickets/issues/7890

segburg commented 3 years ago

Below is a list of a few more event xmls with MLv station magnitudes but missing MLv amplitudes and no network MLv: 2012p318469 2012p449454 2012p478269 2013p289288 2013p416398 2013p434263 2013p437956 2013p706831 2018p818207 2019p109870

salichon commented 3 years ago

HNY @segburg ! okay for t 2012-2020 it looks like an an occasional feature. Will llook at these specific conditions
and follow up as in https://github.com/GeoNet/help/issues/78#issuecomment-747723060

salichon commented 3 years ago

There is also this event with an origin id but nothing else: https://service.geonet.org.nz/fdsnws/event/1/query?eventid=2019p431888. Quakesearch returns more complete information though: 2019p431888,earthquake,2019-06-09T19:10:11.104Z,2019-06-09T19:

@segburg this is looking a different issue but interesting. I ll look at it - Check that the sc3xml is existing as opposed to the fdsnxml

[x] Is 2019p431888 M3.2 informed into our archive ? --- > can be found into http://seiscompml07.s3-website-ap-southeast-2.amazonaws.com/2019p431888.xml Though this very sc3xml XML has a fault and isn't displaying the event parameters as usual (event without an associated origin) ---> will make a ticket (different from above)
---> Probably related to analysis procedure glitch ---> Can be corrected Done reason unknown

you can find the corrected file here: https://github.com/GeoNet/tickets/files/5890112/2019p431888_AssOrigin.xml.txt

salichon commented 2 years ago

thanks @segburg

* [x]  Detail the missing bits of amplitude information

* [x]  Investigate the reason(s)

* [x]  Track if it is a systematic feature and list the affected other events
  -->> occasional cause to detail ( event list as in  [Quake Catalogue - Occasional  amplitude information missing from the event xml #78 (comment)](https://github.com/GeoNet/help/issues/78#issuecomment-756532665) )

* [ ]  Test if the actual ampliude measurement can be restored

* [ ]  Address the event update mechanism in AWS and if updating the event archive with completed information is relevant
  FYI @elidana @JonoHanson

future discussion and work in Geonet/tickets: GeoNet/tickets#7736

Finalisation here - when understood and done

This still needs to be finalized

GeoNet / help

Quake Catalogue - Occasional amplitude information missing from the event xml #78