Step pulses in multiple stations

Technical Support
1

Hi,
I was just having a look at data from the Cornwall Schools network in the UK. I got the data using the FDSN web services. Attached is a screenshot showing weird step pulses happening on multiple stations at the same time at around 00:04 on 2020/01/04

Screenshot 2020-02-19 at 16.39.13
Screenshot 2020-02-19 at 16.39.131134×852 45.3 KB
. It looks like some sort of calibration pulse? Or is there something weird going on at the server side? Interested for your thoughts :slight_smile:

2

hi steven,

that is indeed a server-side issue (the shake has no calibartion pulses). we are aware of this problem and will be addressing it in Q2 of this year.

to be clear: these are not actually step-wise functions at all, but a gap in the data. it’s the display program that is not recognizing it as a gap for display as such (it is reading the mini-SEED format file?).

regardless, these gaps shouldn’t exist and will be addressed in the near future. apologies for the inconvenience.

richard

3

Thank you - that makes sense (I am displaying the miniSEEDs). Cheers!

1 Like