ANALISIS ANOMALI SINYAL ULTRA LOW FREQUENCY BERDASARKAN DATA PENGUKURAN GEOMAGNETIK SEBAGAI INDIKATOR PREKURSOR GEMPABUMI WILAYAH LAMPUNG TAHUN 2016

Authors

  • Ulfa Wahyuningsih Universitas Lampung, Indonesia
  • Syamsurijal Rasimeng Universitas Lampung, Indonesia
  • Karyanto Karyanto Universitas Lampung, Indonesia

DOI:

https://doi.org/10.23960/jge.v4i2.16

Keywords:

Earthquake Lampung region, ULF emissions, Precursors of earthquakes

Abstract

Regional research had been done to analysis anomalies signal of ultra low frequency based on measurement data as an indicator of the geomagnetic earthquake precursor of lampung in 2016. To achieve purpose of the study conducted by the following steps: (i) Calculation of the total magnetic field of data; (ii) Daily Trend Analysis; (iii) the Fourier transform of the data Geomagnetic Anomaly; (iv) Localization Frequency ULF; (v) Calculation of Ratio Vertical-Horizontal (Polarization Ratio Z / H); (vi) Correction magnetic storms or Disturbance Strom Time (DST); (vii) the identification of earthquake precursors; (viii) Determination of OnsetTime, leadtime,and the direction of precursors. The results of the analysis of ten earthquakes with a magnitude above 5 MW have precursors between 11 to 30 days before an earthquake. Nine out of ten earthquakes studied had an earthquake precursors and precursors that do not have, this is because the distance is too far from the station Magdas in Liwa, West Lampung. Thus it can be seen that the precursor using the magnetic data can be used to make short-term predictions.

References

Hattori, K., 2004, ULF Geomagnetic Changes Associated with Large Earthquake, Journal Terrestrial, Atmospheric and Oceanic Sciences (TAO), Vol.15, No. 3, 329-360.

Hattori, K., Serita, A., Yoshino, C., Hayakawa, M., Isezaki, N., 2006, Singular spectral analysis and principal component analysis for signal discrimination of ULF geomagnetic data associated with 2000 Izu Island Earthquake Swarm, Proceeding Phys.Chem. Earth 31, 281–291.

Hayakawa, M., 1999, Atmospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes, Tokyo : Terra Publishing Company.

Hayakawa, M., Yumoto, K., Roeder, J.L., Koons, H.C. dan Hobara, Y., 2003, Characteristics of ULF magnetic anomaly before earthquakes, Proceeding Physics and Chemistry of the Earth, 29, 437-444.

Ibrahim, G. dan Subarjo., 2005, Pengetahuan Seismologi. Jakarta : Badan Meteorologi Klimatologi dan Geofisika.

Kopytenko, Y.A., Matishvili, T.G., Voronov, P.M. dan Mochanov, O.A., 1993, Detection of ultra-low-frequency emissions connected with the Spitak earthquake and its aftershock activity, based on geomagnetic pulsations data at Dusheti and Vardzia observatories, Proceeding Phys. Earth Planet.Inter, 77, 85-95.

Kovtun, A.A., 1980, Using of Natural Electromagnetic Field of the Earth under Studying of Earth’s Electroconductivity, Lenigrad University.

McPherron,L,R., 1998, Definition, Calculation, And Properties Of The Dst Index, Colorado.

Mogi, K., 1985, Earthquake Prediction, Academic Press, Hal. 355.

Molchanov, O.A. dan Hayakawa, M., 1995, Generation of ULF electromagnetic emissions by microfracturing, Proceeding Geophys. Res. Lett. 22, 3091-3094.

Molchanov, O.A. dan Hayakawa, M., 1998, On the generation of ULF seismogenic electromagnetic emissions, Proceeding Phys. Earth Planet. Int. 105,201-210.

Mulyono, A., Ariwibowo, S. dan Iqbal, P., 2014, Ilmu Kebumian untuk Perlindungan Wilayah, LIPI.

Mursula, K., Holappa, L., dan Karinen, A., 2008. Correct normalization of the Dst Index. Finland.

Prattes, G., Schwingenschuh, K., Eichelberger, H.U., Magnes, W., Boudjada, M., Stachel, M., Vellante, M., Villante, U., Wesztergom, V. dan Nenovski, P., 2011, Ultra Low Frequency (ULF) European multi station magnetic field analysis before and during the 2009 earthquake at L`Aquila regarding regional geotechnical information, National Hazard Earth System Sciences, 11, 1959-1968.

Sieh, K. dan Natawidjaja, D., 2000, Neotectonics of Sumatra Fault, Indonesia, Journal of Geophysical Research, Vol. 105, 28,295-28,326.

Strein, S. dan Wysession., 2003, An Introduction to Seismology, earthquakes, and earth structure, UK.

Subakti, H., 2012, Modul Prediksi Gempabumi, Jakarta : Akademi Meteorologi Dan Geofisika.

Yumoto, K., 2006, MAGDAS project and its application for space weather, Journal Solar Influence on the Heliosphere and Earth’s Enviroment : Resent Progress and Prospect, 81-87099-40-2, (ISBN : 399-405).

Yumoto, K., Ikemoto, S., Cardinal, M.G., Hayakawa, M., Hattori, K., Liu, J.Y., Saroso, S., Ruhimat, M., Husni, M., Widarto, D., Ramos, E., McNamara, D., Otadoy, R.E., Yumul, G., Ebora, R. dan Servando, N., 2009, A new ULF wave analysis for Seismo-Electromagnetic using CPMN/MAGDAS data, Proceeding Physics and Chemistry of the Earth, 34, 360-366.

Downloads

Published

2020-01-17

How to Cite

Wahyuningsih, U., Rasimeng, S., & Karyanto, K. (2020). ANALISIS ANOMALI SINYAL ULTRA LOW FREQUENCY BERDASARKAN DATA PENGUKURAN GEOMAGNETIK SEBAGAI INDIKATOR PREKURSOR GEMPABUMI WILAYAH LAMPUNG TAHUN 2016. JGE (Jurnal Geofisika Eksplorasi), 4(2), 187–200. https://doi.org/10.23960/jge.v4i2.16

Issue

Vol. 4 No. 2 (2018)

Section

Articles

Citation Check

License

Authors/Readers/Third Parties can read, print and download, redistribute or republish the article (e.g. display in a repository), translate the article, download for text and data mining purposes, reuse portions or extracts from the article in other works, sell or re-use for commercial purposes, remix, transform, or build upon the material, they must distribute their contributions under the same license as the original Creative Commons Attribution-NonComercial (CC BY-NC).

Similar Articles

1 2 3 4 5 6 7 8 > >> 

You may also start an advanced similarity search for this article.

Most read articles by the same author(s)

1 2 3 > >>