MWZ strong motion vs BB station instrumentations shows discrepancies over a few periods
events as 2020p578726 or 2020p332789 are not relevant for comparison
[x] List of events of interest
Enquire on 2020p480708 M4.9 (June 26) M5 2020p877108 (November 20) "~Close and M>5 "
Source: Found in Jess s archive (/M_5/HN_HH/spectral_diff_figs/)
[x] Isolate if new issue arises and confirmed - andf Check over time and events
Horizontal components are different above ~4Hz
"Noise" contribution ?
[x] - Propose solution / fix /Actions
Site effect on the horizontal ? Components slightl;y off between both instruments in 2020 ?
Close and relevant Events took for this station are often deep (so mostly above ~~vertical location)
Would need to enquire about shallow local and M>4.5 events. if any issues arises clearly
[ ] - Document
I don't reckon there is a critical or major issue. - to my "quick" check up
can be complemented by others ...
MWZ strong motion vs BB station instrumentations shows discrepancies over a few periods
events as 2020p578726 or 2020p332789 are not relevant for comparison
[x] List of events of interest Enquire on 2020p480708 M4.9 (June 26) M5 2020p877108 (November 20) "~Close and M>5 " Source: Found in Jess s archive (
/M_5/HN_HH/spectral_diff_figs/
)[x] Isolate if new issue arises and confirmed - andf Check over time and events
Some discrepancies in the PGA measures BB Vs SM
Close Events are deep - PGA are relatively small
Pretty Similar PGV and PSA values whether broadband ot Strong motion derived. as in event https://www.geonet.org.nz/earthquake/technical/2020p877108
Z components are very similar PSA
Horizontal components are different above ~4Hz "Noise" contribution ?
[x] - Propose solution / fix /Actions Site effect on the horizontal ? Components slightl;y off between both instruments in 2020 ? Close and relevant Events took for this station are often deep (so mostly above ~~vertical location) Would need to enquire about shallow local and M>4.5 events. if any issues arises clearly
[ ] - Document
I don't reckon there is a critical or major issue. - to my "quick" check up can be complemented by others ...
FYI @SquirrelKnight @elidana @mnaguit