Closed SquirrelKnight closed 2 years ago
our team had a look at FOZ installation history, below their findings. Since 2004 the same broadband (CMG-3ESP) and strong motion (FBA-ES-T) sensors have been installed and always co-located in a vault side by side. In 2015 the vault was moved. Orientations of the installed sensors in each vault epoch looks all good (see pictures below).
@SquirrelKnight can you please confirm what is the event that does not show an homogeneous difference across the spectrum? (should be one from the group '2802756', '2808300', '2829153', '2853545')
from above "FOZ - sugarloafquarry is causing me a bit of confusion as a 4X is currently present there since 2017 (= I expect a problem) yet Jesse's plots for 2020 events shows a 1:1 ratio " (--> thought to be the opposite)
FOZ metadata history: https://service.geonet.org.nz/fdsnws/station/1/query?station=FOZ&format=text&level=channel&channel=H?Z
#Network | Station | Location | Channel | Elevation | Azimuth | Dip | SensorDescription | Scale | ScaleFreq | ScaleUnits | SampleRate | StartTime | EndTime
NZ|FOZ|10|HHZ|0.000000|0.000000|-90.000000|Broadband Seismometer|838860800.000000|1.000000|m/s|100.000000|2004-10-13T00:00:00|2015-09-22T18:00:00
NZ|FOZ|20|HNZ|0.000000|0.000000|-90.000000|Accelerometer|427336.117780|1.000000|m/s**2|200.000000|2004-10-13T00:00:02|2015-09-24T23:59:59
NZ|FOZ|11|HHZ|0.000000|0.000000|-90.000000|Broadband Seismometer|838860800.000000|1.000000|m/s|100.000000|2015-09-23T05:30:00|2017-03-14T21:20:00
NZ|FOZ|21|HNZ|0.000000|0.000000|-90.000000|Accelerometer|427336.117780|1.000000|m/s**2|200.000000|2015-09-25T00:00:00|2017-03-14T21:20:00
NZ|FOZ|21|HNZ|0.000000|0.000000|-90.000000|Accelerometer|427336.117780|1.000000|m/s**2|200.000000|2017-03-14T21:20:01|2017-03-15T23:59:59
NZ|FOZ|11|HHZ|0.000000|0.000000|-90.000000|Broadband Seismometer|838860800.000000|1.000000|m/s|100.000000|2017-03-14T21:20:01|2018-12-11T21:00:00
NZ|FOZ|21|HNZ|-0.000000|0.000000|-90.000000|Accelerometer|1709344.471122|1.000000|m/s**2|200.000000|2017-03-16T00:00:01|
NZ|FOZ|11|HHZ|0.000000|0.000000|-90.000000|Broadband Seismometer|838860800.000000|1.000000|m/s|100.000000|2018-12-11T21:45:00|
events to be looked at in more detaills
Each season has SM and BB set up differently
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!DOCTYPE earthquake SYSTEM "stationlist.dtd"> <!DOCTYPE earthquake SYSTEM "stationlist.dtd">
<stationlist created="" xmlns="ch.ethz.sed.shakemap.usgs.xml" <stationlist created="" xmlns="ch.ethz.sed.shakemap.usgs.xml"
<station code="FOZ" name="FOZ" netid="NZ" insttype="CMG-3ES | <station code="FOZ" name="FOZ" netid="NZ" insttype="FBA-ES-
<comp name="10.HHE"> | <comp name="20.BNE">
<acc value="0.0323674290" flag="0"/> | <acc value="0.0327546128" flag="0"/>
<vel value="0.0402220914" flag="0"/> | <vel value="0.0406699982" flag="0"/>
<psa03 value="0.0851590240" flag="0"/> | <psa03 value="0.0758072721" flag="0"/>
<psa10 value="0.0393508916" flag="0"/> | <psa10 value="0.0386904403" flag="0"/>
<psa30 value="0.0139519885" flag="0"/> | <psa30 value="0.0139745425" flag="0"/>
</comp> </comp>
<comp name="10.HHN"> | <comp name="20.BNN">
<acc value="0.0471940290" flag="0"/> | <acc value="0.0468957958" flag="0"/>
<vel value="0.0311889867" flag="0"/> | <vel value="0.0319635127" flag="0"/>
<psa03 value="0.1137600603" flag="0"/> | <psa03 value="0.1137505145" flag="0"/>
<psa10 value="0.0324292424" flag="0"/> | <psa10 value="0.0323447519" flag="0"/>
<psa30 value="0.0082503008" flag="0"/> | <psa30 value="0.0082962589" flag="0"/>
</comp> </comp>
<comp name="10.HHZ"> | <comp name="20.BNZ">
<acc value="0.0262786899" flag="0"/> | <acc value="0.0267345734" flag="0"/>
<vel value="0.0356911684" flag="0"/> | <vel value="0.0357763512" flag="0"/>
<psa03 value="0.0484587420" flag="0"/> | <psa03 value="0.0479322373" flag="0"/>
<psa10 value="0.0395912395" flag="0"/> | <psa10 value="0.0399410097" flag="0"/>
<psa30 value="0.0134465935" flag="0"/> | <psa30 value="0.0134981134" flag="0"/>
</comp> </comp>
</station> </station>
</stationlist> </stationlist>
Season 2 2020 : Obvious difference! 0.25 ratio as for other OBSIDIAN4x - CMG/Q330 and FBA/Obsidian4x [since 2017]
<stationlist created="" xmlns="ch.ethz.sed.shakemap.usgs.xml" <stationlist created="" xmlns="ch.ethz.sed.shakemap.usgs.xml"
<station code="FOZ" name="FOZ" netid="NZ" insttype="CMG-3ES | <station code="FOZ" name="FOZ" netid="NZ" insttype="FBA-ES-
<comp name="11.HHE"> | <comp name="21.HNE">
<acc value="0.1964913459" flag="0"/> | <acc value="0.0490636793" flag="0"/>
<vel value="0.0911897759" flag="0"/> | <vel value="0.0231956877" flag="0"/>
<psa03 value="0.4294555146" flag="0"/> | <psa03 value="0.1096788029" flag="0"/>
<psa10 value="0.1006291272" flag="0"/> | <psa10 value="0.0261726216" flag="0"/>
<psa30 value="0.0282471822" flag="0"/> | <psa30 value="0.0073772619" flag="0"/>
</comp> </comp>
<comp name="11.HHN"> | <comp name="21.HNN">
<acc value="0.1927286157" flag="0"/> | <acc value="0.0486891813" flag="0"/>
<vel value="0.0979078193" flag="0"/> | <vel value="0.0248455348" flag="0"/>
<psa03 value="0.3392446491" flag="0"/> | <psa03 value="0.0890793055" flag="0"/>
<psa10 value="0.1049995760" flag="0"/> | <psa10 value="0.0262968559" flag="0"/>
<psa30 value="0.0146964616" flag="0"/> | <psa30 value="0.0035166214" flag="0"/>
</comp> </comp>
<comp name="11.HHZ"> | <comp name="21.HNZ">
<acc value="0.0760153330" flag="0"/> | <acc value="0.0187925837" flag="0"/>
<vel value="0.0641462353" flag="0"/> | <vel value="0.0165146793" flag="0"/>
<psa03 value="0.1482640661" flag="0"/> | <psa03 value="0.0380991274" flag="0"/>
<psa10 value="0.0845038442" flag="0"/> | <psa10 value="0.0215602451" flag="0"/>
<psa30 value="0.0224075067" flag="0"/> | <psa30 value="0.0057510434" flag="0"/>
<station code="FOZ" name="FOZ" netid="NZ" insttype="CMG-3ES | <station code="FOZ" name="FOZ" netid="NZ" insttype="FBA-ES-
<comp name="11.HHE"> | <comp name="21.HNE">
<acc value="0.1533250202" flag="0"/> | <acc value="0.0393349780" flag="0"/>
<vel value="0.0898074424" flag="0"/> | <vel value="0.0227910726" flag="0"/>
<psa03 value="0.4868539400" flag="0"/> | <psa03 value="0.1219592245" flag="0"/>
<psa10 value="0.0769432494" flag="0"/> | <psa10 value="0.0198753541" flag="0"/>
<psa30 value="0.0107528644" flag="0"/> | <psa30 value="0.0028317628" flag="0"/>
</comp> </comp>
<comp name="11.HHN"> | <comp name="21.HNN">
<acc value="0.1347125750" flag="0"/> | <acc value="0.0329017764" flag="0"/>
<vel value="0.0654058228" flag="0"/> | <vel value="0.0168343461" flag="0"/>
<psa03 value="0.5619861549" flag="0"/> | <psa03 value="0.1477659948" flag="0"/>
<psa10 value="0.0487740774" flag="0"/> | <psa10 value="0.0123426318" flag="0"/>
<psa30 value="0.0054993729" flag="0"/> | <psa30 value="0.0014363258" flag="0"/>
</comp> </comp>
<comp name="11.HHZ"> | <comp name="21.HNZ">
<acc value="0.0749384243" flag="0"/> | <acc value="0.0186263893" flag="0"/>
<vel value="0.0426370664" flag="0"/> | <vel value="0.0108029659" flag="0"/>
<psa03 value="0.2159569157" flag="0"/> | <psa03 value="0.0552651060" flag="0"/>
<psa10 value="0.0404837977" flag="0"/> | <psa10 value="0.0103638821" flag="0"/>
<psa30 value="0.0062699189" flag="0"/> | <psa30 value="0.0016113766" flag="0"/>
</comp> </comp>
@elidana @SquirrelKnight relates to https://github.com/GeoNet/help/issues/85
And points all the attention to the Datalogger Obsidian4x
response or internal configuration
is addressed through Obsidian4X response e afaik and will be documented in https://github.com/GeoNet/help/issues/94 @SquirrelKnight any other concerns about FOZ ?
Similar to station RIZ, FOZ shows a time-dependent issue, most likely due to flattening of one of the two sensors.![pSA_diff_FOZ_datetime](https://user-images.githubusercontent.com/41596863/135671504-0d41ad89-4bb2-4260-818d-faad4e74cf28.jpg)
The events used for these computations are as follows:
'2020p111984', '2020p201743', '2020p475488', '2020p606562', '2802756', '2808300', '2829153', '2853545'