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These are raw uncalibrated data from RBRconcerto tiltmeters (not parsed), currently sampled at 20 SPS and 5SPS, product of a middleware driver.
Oceans 2.0 API filter: dataProductCode=ACCAPT
RBR manufacturer data sheet: http://rbr-global.com/wp-content/uploads/2017/10/0005642revA-RBRconcerto-APT.pdf
General file format description: https://docs.rbr-global.com/apt
Revision History
- 20180503: Initial release
Formats
Format is .accapt, consisting of comma-separated numeric values as shown in the section below. The file names end in either -5SPS or -20SPS with file extension .apt, depending on the sampling rate.
Oceans 2.0 API filter: extension=accapt
In the near future, ONC will be also sending sends the .acc apt files to IRIS, as currently done with seismometer data (102). Example: http://service.iris.edu/fdsnws/dataselect/1/query?net=NV&sta=CBC27&loc=Z1&cha=AHD&starttime=2019-10-05T00:00:00&endtime=2019-10-05T01:00:00&format=geocsv&nodata=404
Examples
A sample .acc apt file would look as follows:
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1 | NTP time | YYYY-MM-DD HH:MM:SS.sss format. | The time that the NTP client reports. This is reset automatically per the configured NTP refresh rate while the NTP source is accessible. |
2 | Logger time | YYYY-MM-DD HH:MM:SS.sss format. | The time that the internal logger reports. Drift should be ±60s/year. |
3 | Accelerometer X period (picoseconds) | Double precision (64 bit) floating point number. | The period of the X (first) channel of the triax triaxial accelerometer. |
4 | Accelerometer Y period (ps) | Double precision (64 bit) floating point number. | The period of the Y (second) channel of the triax triaxial accelerometer. |
5 | Accelerometer Z period (ps) | Double precision (64 bit) floating point number. | The period of the Z (third) channel of the triax triaxial accelerometer. |
6 | Accelerometer temperature period (ps) | Double precision (64 bit) floating point number. | The period of the temperature (fourth) channel of the triax triaxial accelerometer. |
7 | BPR pressure period (ps) | Double precision (64 bit) floating point number. | The period of the pressure (first) channel of the BPR. |
8 | BPR temperature period (ps) | Double precision (64 bit) floating point number. | The period of the temperature (first) channel of the BPR. |
Sample file with 20 SPS for download: https://data.oceannetworks.ca/AdFile?filename=RBRTILTMETERACCBPR63057_20180521T000000.000Z.accRBRTILTMETERACCBPR63055_20191029T071627.144Z-20SPS.apt
The first column in this file is the timestamp from the middleware drive.
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