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Volume 6, issue 2 | Copyright

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

Geosci. Instrum. Method. Data Syst., 6, 547-560, 2017
https://doi.org/10.5194/gi-6-547-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 19 Dec 2017

Research article | 19 Dec 2017

One second vector and scalar magnetic measurements at the low-latitude Choutuppal (CPL) magnetic observatory

Nelapatla Phani Chandrasekhar1, Sai Vijay Kumar Potharaju1, Kusumita Arora1, Chandra Shakar Rao Kasuba1, Leonid Rakhlin2, Sergey Tymoshyn2, Laszlo Merenyi3, Anusha Chilukuri1, Jayashree Bulusu1, and Sergey Khomutov4 Nelapatla Phani Chandrasekhar et al.
  • 1Hyderabad Magnetic Observatory, CSIR-National Geophysical Research Institute, Habsiguda, Uppal road, Hyderabad-500007, India
  • 2Research Centre GEOMAGNET, Pavlika St., 79005 Lviv, Ukraine
  • 3Geological and Geophysical Institute of Hungary, 1143 Budapest, Stefániautca 14, Hungary
  • 4Institute of Cosmophysical Research and Radio Wave Propagation, FEB RAS, Kamchatka State Technical University, Russia

Abstract. One second measurements of the geomagnetic field variations, which meet INTERMAGNET quality and transmission specifications, require very special conditions to be maintained at the observatories over sustained periods of time, which pose serious challenges for the operators, particularly when infrastructural and environmental conditions are far from ideal. This work presents the progressive steps, which led to the successful setup of such measurements at the new magnetic observatory of the Council of Scientific and Industrial Research (CSIR)-National Geophysical Research Institute (NGRI) in the Choutuppal (CPL) campus, Hyderabad (HYB), India. The 1s magnetic measurements in trial mode commenced in 2015 using the newly developed observatory-grade 1s fluxgate magnetometer, GEOMAG-02MO, from Research Centre GEOMAGNET (GM), Ukraine, and the Overhauser proton precession magnetometer, GSM-90F1, along with the data acquisition system, Magrec-4B from Mingeo, Hungary. Iterative tuning of the setup led to the generation of good quality data from 2016 onward. The processes of commissioning this setup in low-latitude conditions, with the aim of producing 1s definitive data, and the characteristics of the data from this new instrument are presented here.

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This work presents the progressive steps which led to the successful setup of such measurements at the new magnetic observatory in Choutuppal (CPL) of CSIR-NGRI, Hyderabad, India. Iterative tuning of the setup led to the generation of good quality data from 2016 onward. The processes of commissioning this setup in low-latitude conditions, with the aim of producing 1 s definitive data, and the characteristics of the data from this new instrument are presented here.
This work presents the progressive steps which led to the successful setup of such measurements...
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