Time-stamp correction of magnetic observatory data acquired during unavailability of time-synchronization services

Coïsson, Pierdavide; Telali, Kader; Heumez, Benoit; Lesur, Vincent; Lalanne, Xavier; Xin, Chang Jiang

doi:https://doi.org/10.5194/gi-6-311-2017

Articles | Volume 6, issue 2

https://doi.org/10.5194/gi-6-311-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

The Earth’s magnetic field: measurements, data, and applications...

https://doi.org/10.5194/gi-6-311-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 6, issue 2

Research article

|

01 Sep 2017

Research article |

| 01 Sep 2017

Time-stamp correction of magnetic observatory data acquired during unavailability of time-synchronization services

Pierdavide Coïsson, Kader Telali, Benoit Heumez, Vincent Lesur, Xavier Lalanne, and Chang Jiang Xin

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Final revised paper (published on 01 Sep 2017)
Supplement to the final revised paper
Preprint (discussion started on 17 Mar 2017)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Comments', Anonymous Referee #1, 29 Mar 2017
- AC1: 'Response to reviewer 1', Pierdavide Coïsson, 09 Jun 2017
RC2: 'Interactive comment', Anonymous Referee #2, 17 Apr 2017
- AC2: 'Response to reviewer 2', Pierdavide Coïsson, 09 Jun 2017

Short summary

Data loggers of magnetic observatories use GPS receivers to provide accurate time stamping of recorded data. Typical sampling rate is 1 s. A failure of the GPS receiver can result in erroneous time stamps. The observatory of Lanzhou, China, accumulated a lag of 28 s over 1 year. Using magnetic data recorded at other locations in a radius of 3000 km it was possible to estimate the diurnal lag and correct the time tamps to produce reliable 1 min averages of magnetic data.