Jurnal

Identification of Anomalous ULF Emission Related To Short Term Earthquake Precursor

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The observation of ULF emission recorded in geomagnetic station is a powerful study of short term earthquake precursor. Anomalies that arise when there is no disturbance magnetic storm can be considered as precursors of earthquake. The data used in this research were geomagnetic data recorded in LWA station and earthquake data. The earthquakes were on September 23, 2015 (5.1 Mw (mB)), October 1, 2015 (5.4 Mw (mB)), November 18, 2015 (5.0 MLv), March 17, 2016 (5.0 Mw (mB)), and April 24, 2016 (5.0 mB). In determining onset time and lead time, polarization ratio Z/H at frequency of 0.012 Hz was used. Lead times detected were 4 days, 7 days, 4 days, 18 days, and 14 days before the earthquakes respectively. The directions of anomalies of ULF emission was investigated with Single Station Transfer Function (SSTF). The azimuth anomalous ULF emissions for each earthquakes were 217.3o, 208.5o, 184.3o, 165.9o, and 216.6o.

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JURPDFG16011.1

551.22 SIH i

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Judul Seri

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No. Panggil

551.22 SIH i

Penerbit

: ., 0

Deskripsi Fisik

7 hal;ilusi;30 cm

Bahasa

English

ISBN/ISSN

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Klasifikasi

551.22 SIH i

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

ULF emission, earthquake precursor, polarization p

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