Development of a Schumann-resonance station in Mexico: Preliminary measurements

Sierra, F.; Vazquez, H. S.; Andrade, Mateus; Mendoza, B.; Rodriguez-Osorio, D.

doi:10.1109/map.2014.6867687

Cited by 9 publications

(5 citation statements)

References 16 publications

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“…Details about the structure and development of the magnetic antenna are given. This station measures the first three harmonics [15]. In SR observatories in southwestern China, the frequency band of the instruments is about 3-29 Hz (in the range of 3 dB), and the sampling frequency is 100 Hz.…”

Section: Introductionmentioning

confidence: 99%

A new portable ELF Schumann resonance receiver: design and detailed analysis of the antenna and the analog front-end

Votis

Tatsis

Christofilakis

et al. 2018

J Wireless Com Network

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Schumann resonance oscillation detection is a complex procedure which requires customized and high-quality measurement systems. The primary objective of this work was to design and implement a stand-alone, portable, and low-cost receiver able to measure as much Schumann resonance harmonics as possible. Design, as well as detailed analysis of the efficient induction coil magnetic antenna and the low-noise amplifying-filtering chain, is presented. The detection system includes two coils back to back, resulting in a total coil length of 60 cm. The filtering and amplification chain exhibits an experimentally measured total passband gain equal to 112 dB at 10 Hz and as low as 2.88 nV/√Hz equivalent input noise. In order to validate the new portable ELF Schumann resonance detection and monitoring system, we took measurements at various spots "relatively" free from man-made electromagnetic pollution. Results have shown very clear Schumann resonance peaks for the first six modes with 10-min acquisition time.

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Section: Introductionmentioning

confidence: 99%

A new portable ELF Schumann resonance receiver: design and detailed analysis of the antenna and the analog front-end

Votis

Tatsis

Christofilakis

et al. 2018

J Wireless Com Network

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“…It operates in a range of (0-60) Hz (ELF). Its detailed description is given in [49]. The data temporal resolution is 130 observations per second.…”

Section: Possible Schumann Resonance Effectmentioning

confidence: 99%

Assessment of Morelian Meteoroid Impact on Mexican Environment

et al. 2021

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Possible ionospheric effects of the Morelian meteoroid that passed and exploded over Mexico on 19 February 2020 (18 February 2020 local time) were estimated. The meteoroid trajectory, velocity and time of occurrence were calculated based on outdoor camera records. Modeling was used to estimate the meteoroid initial diameter, density, mass, velocity, energy and their change during its flight in the atmosphere. The ensemble of ionospheric scintillation indices calculated from the high-rate GNSS data and the filtered slant Total Electron Content data were used to reveal the presence of ionospheric disturbances generated by shock waves excited by the meteoroid flight and explosion. The first ionospheric responses to phenomena accompanying the meteoroid were detected (2.5–3.5) min after the explosion. The disturbances were attenuated quickly with distance from their source and were rarely recorded by GNSS receivers located more than 600 km from the meteoroid explosion site. The ionospheric disturbances of intermediate-scale, small-scale, shock-acoustic-wave-scale and sometimes medium-scale were revealed. The detected disturbances corresponded to the range of acoustic-gravity waves. An asymmetry of the disturbance manifestation in different directions was observed. The obtained results are in accordance with results of the observation of other meteoroids. Although the object was smaller and of less energy than other known meteoroids, it is an interesting case because, to the best of our knowledge, it isthe first known to us low-latitude meteoroid with the detected ionospheric effects.

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“…of early SR investigations, see Nickolaenko and Hayakawa [2002]. Some recent stations concerning SR measurements are reported in Zhou et al [2013], Kulak et al [2014], and Sierra et al [2014]. From a more general point of view, not only concerning measurement stations, the interest in the study of the global and local ionosphere electromagnetic properties and applications becomes evident from the number and diversity of recent papers concerning these topics [Cushley and Noël, 2014;Gulyaeva et al, 2014;Cherniak et al, 2014;Nickolaenko and Hayakawa, 2014;Ohta et al, 2013;Fraser-Smith and Kjono, 2014].…”

Section: Introductionmentioning

confidence: 99%

“…Hayakawa and Hobara, from the University of Electro‐Communications in Tokyo, Japan, analyze coordinated measurements of ELF transients, very low frequency ratio signals, and optical observations of “red sprites.” For a more detailed survey of early SR investigations, see Nickolaenko and Hayakawa []. Some recent stations concerning SR measurements are reported in Zhou et al [], Kulak et al [], and Sierra et al []. From a more general point of view, not only concerning measurement stations, the interest in the study of the global and local ionosphere electromagnetic properties and applications becomes evident from the number and diversity of recent papers concerning these topics [ Cushley and Noël , ; Gulyaeva et al , ; Cherniak et al , ; Nickolaenko and Hayakawa , ; Ohta et al , ; Fraser‐Smith and Kjono , ].…”

Section: Introductionmentioning

confidence: 99%

Extremely low frequency band station for natural electromagnetic noise measurement

et al. 2015

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A new permanent ELF measurement station has been deployed in Sierra Nevada, Spain. It is composed of two magnetometers, oriented NS and EW, respectively. At 10 Hz, their sensitivity is 19 μV/pT and the signal-to-noise ratio (SNR) is 28 dB for a time-varying signal of 1 pT, the expected field amplitude in Sierra Nevada. The station operates for frequencies below 24 Hz. The magnetometers, together with their corresponding electronics, have been specifically designed to achieve such an SNR for small signals. They are based on high-resolution search coils with ferromagnetic core and 10 6 turns, operating in limited geometry configuration. Different system noise sources are considered, and a study of the SNR is also included. Finally, some initial Schumann resonance measurements are presented in order to validate the performance of the measurement station, including 1 h length spectra, daily variations of resonance amplitudes and frequencies for the different seasons, and a 3 day spectrogram.

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Development of a Schumann-resonance station in Mexico: Preliminary measurements

Cited by 9 publications

References 16 publications

A new portable ELF Schumann resonance receiver: design and detailed analysis of the antenna and the analog front-end

A new portable ELF Schumann resonance receiver: design and detailed analysis of the antenna and the analog front-end

Assessment of Morelian Meteoroid Impact on Mexican Environment

Extremely low frequency band station for natural electromagnetic noise measurement

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