TatsukiWashimi - 13:09, Wednesday 22 June 2022 (2989)
Seismic and Acoustic measurement at TAMA FC
[YokozaWashimi]
We brought the PEM sensors from KAGRA to TAMA temporally.
* Trillium compact seismometer and its cable
* Whitening filter with DC power supply and D-sub 15pin cable
* ACO microphone, ACO 4ch power supply, and BNC cable
* 3-axis accelerometer and its cable
We connected the seismometer and the microphone to the ADC ports.
* K1:FDS-ADCspear_1_OUT_DQ -> Low frequency microphone
* K1:FDS-END_in_HOR_fil_IN1 -> Seismometer East-West
* K1:FDS-END_in_SUM_fil_IN1 -> Seismometer North-South
* K1:FDS-END_in_LEN_fil_IN1 -> Seismometer Vertical
The attached plots are seismic and acoustic data.
The units are "count", not calibrated to um/s more Pa.
We brought the PEM sensors from KAGRA to TAMA temporally.
* Trillium compact seismometer and its cable
* Whitening filter with DC power supply and D-sub 15pin cable
* ACO microphone, ACO 4ch power supply, and BNC cable
* 3-axis accelerometer and its cable
We connected the seismometer and the microphone to the ADC ports.
* K1:FDS-ADCspear_1_OUT_DQ -> Low frequency microphone
* K1:FDS-END_in_HOR_fil_IN1 -> Seismometer East-West
* K1:FDS-END_in_SUM_fil_IN1 -> Seismometer North-South
* K1:FDS-END_in_LEN_fil_IN1 -> Seismometer Vertical
The attached plots are seismic and acoustic data.
The units are "count", not calibrated to um/s more Pa.
Images attached to this report
Comments related to this report
I compared the seismic data and the microphone data, with KAGRA at the same time.
Seismic data of KAGRA is under OMC chamber and the microphone is in the IMC refl.
The large peak at one-handed several-tens Hz of the seismic data is the self-noise. (data sheet)
Seismic data of KAGRA is under OMC chamber and the microphone is in the IMC refl.
The large peak at one-handed several-tens Hz of the seismic data is the self-noise. (data sheet)
I monitored the seismic level at TAMA this weekend.
Below 1Hz, microseismic band, the ASD is large on Saturday night. It is consistent with the ocean wave.
At around 3Hz, the ASD is large on Saturday night and Monday morning, and small on Sunday.
Between 10 Hz and 20Hz, the ASD is large on Monday Morning.
Around 30 Hz, sometimes strange bumps are observed.
Below 1Hz, microseismic band, the ASD is large on Saturday night. It is consistent with the ocean wave.
At around 3Hz, the ASD is large on Saturday night and Monday morning, and small on Sunday.
Between 10 Hz and 20Hz, the ASD is large on Monday Morning.
Around 30 Hz, sometimes strange bumps are observed.