Preprints
https://doi.org/10.5194/gi-2021-4
https://doi.org/10.5194/gi-2021-4

  24 Mar 2021

24 Mar 2021

Review status: this preprint is currently under review for the journal GI.

Production of Definitive Data from Indonesian Geomagnetic Observatories

Relly Margiono1,3, Christopher W. Turbitt2, Ciarán D. Beggan2, and Kathryn A. Whaler3 Relly Margiono et al.
  • 1Sekolah Tinggi Meteorologi Klimatologi dan Geofisika, Indonesia
  • 2British Geological Survey, Edinburgh, UK
  • 3School of GeoSciences, University of Edinburgh, UK

Abstract. Measurement of the geomagnetic field in Indonesia is undertaken by the Meteorology, Climatology and Geophysics Agency (BMKG). Routine activities at each observatory include the determination of declination, inclination and total field using absolute and variation measurements. The oldest observatory is Tangerang (TNG), started in 1964, followed by Tuntungan (TUN) in 1980, Tondano (TND) in 1990, Pelabuhan Ratu (PLR) and Kupang (KPG) in 2000 and Jayapura (JAY) in 2012. One of the main obligations of a geomagnetic observatory is to produce final measurements, released as definitive data, for each year and make them widely available both for scientific and non-scientific purposes, for example to the World Data Centre of Geomagnetism (WDC-G). Unfortunately, some Indonesian geomagnetic observatories do not share their data to the WDC and often have difficulty in producing definitive data. In addition, some more basic problems still exist such as low quality data due to man-made or instrumental noise, a lack of data processing knowledge, and limited observer training. In this study, we report on the production of definitive data from Indonesian observatories and some recommendations are provided about how to improve the data quality. These methods and approaches are applicable to other institutes seeking to enhance their data quality and scientific utility for example in main field modelling or space weather monitoring.

Relly Margiono et al.

Status: open (until 29 Apr 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gi-2021-4', Anonymous Referee #1, 26 Mar 2021 reply
    • AC1: 'Reply on RC1', Relly Margiono, 26 Mar 2021 reply
  • RC2: 'Comment on gi-2021-4', Anonymous Referee #2, 27 Mar 2021 reply

Relly Margiono et al.

Relly Margiono et al.

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Short summary
In this paper, we have produced definitive data from Indonesian Geomagnetic Observatories to create a standardized high-quality set of measurements for scientific exploitation. We explain the steps taken to improve upon the data collections and processing protocols that previously existed and suggested improvements to enhance the quality of the magnetic time-series. The data can fill the gap in the Pacific region and provide input into geomagnetic modeling and secular variation studies.