Journal cover Journal topic
Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union
doi:10.5194/gi-2017-16
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
27 Mar 2017
Review status
This discussion paper is under review for the journal Geoscientific Instrumentation, Methods and Data Systems (GI).
One second vector and scalar magnetic measurements at low latitude observatory, CPL
Phani Chandrasekhar Nelapatla1, Sai Vijay Kumar Potharaju1, Kusumita Arora1, Chandra Shakhar Rao Kasuba1, Leonid Rakhlin2, Sergey Tymoshyn2, Laszlo Merenyi3, Anusha Chilukuri1, Jayashree Bulusu1, and Sergey Khomutov4 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, H-1143 Budapest, Stefániautca 14
4Institute of Cosmophysical Research and Radio Wave Propagation, FEB RAS, Kamchatka State Technical University, Russia.
Abstract. There is increasing demand from the global geomagnetic community for the recording of 1 second vector and scalar magnetic datain lieu of the traditional of the 1 minute data, as the 1 second magnetic data would be more compatible with measurements made from low-earth orbiting satellites and the increased detectability threshold, would contribute to: (i) understanding the global scale ultra-low frequency (ULF) waves, sudden impulses and other processes in the ionosphere & magnetosphere: (ii) development of real-time space weather forecasts. The combination of ground and satellite data opens a new pathway in understanding many underlying physical processes in the lower-middle atmospheric dynamics, which has not been accurately understood so far. The International Real-time Magnetic ObservatoryNetwork (INTERMAGNET)observatories (IMO-s) have taken a lead in this direction and many IMO-s now produce both 1 minute and 1 second data. Being affordable, rugged, compact as well as having low power consumption, fluxgate magnetometers are the staple vector sensors of IMO-s.The increased order of noise in these sensors with increasing frequencies, is the main concern and work has been going on for the last decade towards development of suitable instruments (Courtillot and Chulliat, 2008; Korepanov et al. 2006, 2009; Pedersen and Merenyi, 2016 and references therein, Dobrodnyak, 2014; Logvinov, 2014) and techniques for the evaluation and elimination of noise from the data is also being pursued (Turbitt et al. 2013).

At the new Magnetic Observatory of CSIR-NGRI in Choutuppal (CPL) campus, 1 second magnetic measurements commenced in the year 2016 using the newly developed Observatory grade 1 second fluxgate magnetometer, GEOMAG-02MO, from GEOMAGNET Ukraine and the Overhauser Proton Precession Magnetometer along with the data acquisition system, MAGREC-4B. The processes of commissioning of this setup in low-latitude conditions, with the aim to finally produce 1 second definitive data (the standards of which are still under discussion with INTERMAGNET) and the characteristics of the data from this new instrument are presented in this work.


Citation: Nelapatla, P. C., Kumar Potharaju, S. V., Arora, K., Kasuba, C. S. R., Rakhlin, L., Tymoshyn, S., Merenyi, L., Chilukuri, A., Bulusu, J., and Khomutov, S.: One second vector and scalar magnetic measurements at low latitude observatory, CPL, Geosci. Instrum. Method. Data Syst. Discuss., doi:10.5194/gi-2017-16, in review, 2017.
Phani Chandrasekhar Nelapatla et al.
Phani Chandrasekhar Nelapatla et al.
Phani Chandrasekhar Nelapatla et al.

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Short summary
At the new Magnetic Observatory of CSIR-NGRI in Choutuppal (CPL) campus, 1 s magnetic measurements commenced in the year 2016 using the newly developed Observatory grade 1 s fluxgate magnetometer, GEOMAG-02MO, from GEOMAGNET and the Overhauser PPM along with the data acquisition system, MAGREC-4B. The processes of commissioning of this setup in low-latitude conditions, with the aim to finally produce 1 s definitive data (the standards of which are still under discussion with INTERMAGNET).
At the new Magnetic Observatory of CSIR-NGRI in Choutuppal (CPL) campus, 1 s magnetic...
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