Scaling and fractal properties of the horizontal geomagnetic field at the tropical stations of Langkawi and Davao in February 2007

Nurul Shazana Abdul Hamid, Geri Kibe Gopir, Mahamod Ismail, Norbahiah Misran, M. D. Usang, K. Yumoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We investigate the scaling and fractal properties of the horizontal component of the geomagnetic field time series acquired by the Magnetic Data Acquisition System (MAGDAS) of the Space Environment Research Center (SERC) of Kyushu University in Japan. The data set covers the quiet period of geomagnetic activity in February 2007 at the near equatorial stations of Langkawi in Malaysia and Davao in the Philippines. These data were sampled every minute for 28 days giving a sample size of 40,320. The power spectra of the time series are obtained, showing dominant periodicities at 24, 12, 8 and 6 hours due to the effect of the sun on the geomagnetic field. The power spectra also indicate scaling with Hurst exponents of 0.50-0.77 in the period of 10 minutes to 6 hours. Then, rescaled range analysis and detrended fluctuation analysis are performed, producing similar ranges of Hurst exponents. Finally, these fractal methods are used to determine the Hurst exponents of similar sized data sets artificially generated by a fractional Brownian motion. The results of this study indicate that the horizontal geomagnetic field at these stations are fractal in nature and persistent.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages516-519
Number of pages4
Volume1250
DOIs
Publication statusPublished - 2010
EventProgress of Physics Research in Malaysia, PERFIK2009 - Malacca
Duration: 7 Dec 20099 Dec 2009

Other

OtherProgress of Physics Research in Malaysia, PERFIK2009
CityMalacca
Period7/12/099/12/09

Fingerprint

geomagnetism
fractals
stations
exponents
scaling
power spectra
Malaysia
Philippines
aerospace environments
data acquisition
periodic variations
Japan
sun

Keywords

  • fractal
  • fractional Brownian motion
  • geomagnetic field
  • Hurst exponent
  • scaling

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Scaling and fractal properties of the horizontal geomagnetic field at the tropical stations of Langkawi and Davao in February 2007. / Abdul Hamid, Nurul Shazana; Gopir, Geri Kibe; Ismail, Mahamod; Misran, Norbahiah; Usang, M. D.; Yumoto, K.

AIP Conference Proceedings. Vol. 1250 2010. p. 516-519.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abdul Hamid, NS, Gopir, GK, Ismail, M, Misran, N, Usang, MD & Yumoto, K 2010, Scaling and fractal properties of the horizontal geomagnetic field at the tropical stations of Langkawi and Davao in February 2007. in AIP Conference Proceedings. vol. 1250, pp. 516-519, Progress of Physics Research in Malaysia, PERFIK2009, Malacca, 7/12/09. https://doi.org/10.1063/1.3469723
Abdul Hamid, Nurul Shazana ; Gopir, Geri Kibe ; Ismail, Mahamod ; Misran, Norbahiah ; Usang, M. D. ; Yumoto, K. / Scaling and fractal properties of the horizontal geomagnetic field at the tropical stations of Langkawi and Davao in February 2007. AIP Conference Proceedings. Vol. 1250 2010. pp. 516-519
@inproceedings{191d4c48c4d4417195cc09812f8ec692,
title = "Scaling and fractal properties of the horizontal geomagnetic field at the tropical stations of Langkawi and Davao in February 2007",
abstract = "We investigate the scaling and fractal properties of the horizontal component of the geomagnetic field time series acquired by the Magnetic Data Acquisition System (MAGDAS) of the Space Environment Research Center (SERC) of Kyushu University in Japan. The data set covers the quiet period of geomagnetic activity in February 2007 at the near equatorial stations of Langkawi in Malaysia and Davao in the Philippines. These data were sampled every minute for 28 days giving a sample size of 40,320. The power spectra of the time series are obtained, showing dominant periodicities at 24, 12, 8 and 6 hours due to the effect of the sun on the geomagnetic field. The power spectra also indicate scaling with Hurst exponents of 0.50-0.77 in the period of 10 minutes to 6 hours. Then, rescaled range analysis and detrended fluctuation analysis are performed, producing similar ranges of Hurst exponents. Finally, these fractal methods are used to determine the Hurst exponents of similar sized data sets artificially generated by a fractional Brownian motion. The results of this study indicate that the horizontal geomagnetic field at these stations are fractal in nature and persistent.",
keywords = "fractal, fractional Brownian motion, geomagnetic field, Hurst exponent, scaling",
author = "{Abdul Hamid}, {Nurul Shazana} and Gopir, {Geri Kibe} and Mahamod Ismail and Norbahiah Misran and Usang, {M. D.} and K. Yumoto",
year = "2010",
doi = "10.1063/1.3469723",
language = "English",
isbn = "9780735407978",
volume = "1250",
pages = "516--519",
booktitle = "AIP Conference Proceedings",

}

TY - GEN

T1 - Scaling and fractal properties of the horizontal geomagnetic field at the tropical stations of Langkawi and Davao in February 2007

AU - Abdul Hamid, Nurul Shazana

AU - Gopir, Geri Kibe

AU - Ismail, Mahamod

AU - Misran, Norbahiah

AU - Usang, M. D.

AU - Yumoto, K.

PY - 2010

Y1 - 2010

N2 - We investigate the scaling and fractal properties of the horizontal component of the geomagnetic field time series acquired by the Magnetic Data Acquisition System (MAGDAS) of the Space Environment Research Center (SERC) of Kyushu University in Japan. The data set covers the quiet period of geomagnetic activity in February 2007 at the near equatorial stations of Langkawi in Malaysia and Davao in the Philippines. These data were sampled every minute for 28 days giving a sample size of 40,320. The power spectra of the time series are obtained, showing dominant periodicities at 24, 12, 8 and 6 hours due to the effect of the sun on the geomagnetic field. The power spectra also indicate scaling with Hurst exponents of 0.50-0.77 in the period of 10 minutes to 6 hours. Then, rescaled range analysis and detrended fluctuation analysis are performed, producing similar ranges of Hurst exponents. Finally, these fractal methods are used to determine the Hurst exponents of similar sized data sets artificially generated by a fractional Brownian motion. The results of this study indicate that the horizontal geomagnetic field at these stations are fractal in nature and persistent.

AB - We investigate the scaling and fractal properties of the horizontal component of the geomagnetic field time series acquired by the Magnetic Data Acquisition System (MAGDAS) of the Space Environment Research Center (SERC) of Kyushu University in Japan. The data set covers the quiet period of geomagnetic activity in February 2007 at the near equatorial stations of Langkawi in Malaysia and Davao in the Philippines. These data were sampled every minute for 28 days giving a sample size of 40,320. The power spectra of the time series are obtained, showing dominant periodicities at 24, 12, 8 and 6 hours due to the effect of the sun on the geomagnetic field. The power spectra also indicate scaling with Hurst exponents of 0.50-0.77 in the period of 10 minutes to 6 hours. Then, rescaled range analysis and detrended fluctuation analysis are performed, producing similar ranges of Hurst exponents. Finally, these fractal methods are used to determine the Hurst exponents of similar sized data sets artificially generated by a fractional Brownian motion. The results of this study indicate that the horizontal geomagnetic field at these stations are fractal in nature and persistent.

KW - fractal

KW - fractional Brownian motion

KW - geomagnetic field

KW - Hurst exponent

KW - scaling

UR - http://www.scopus.com/inward/record.url?scp=78650138437&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78650138437&partnerID=8YFLogxK

U2 - 10.1063/1.3469723

DO - 10.1063/1.3469723

M3 - Conference contribution

SN - 9780735407978

VL - 1250

SP - 516

EP - 519

BT - AIP Conference Proceedings

ER -