The optimum frequency for detecting earthquake precursors based on ultra-low frequency (ULF) geomagnetic data from Sukabumi (SKB) station

An earthquake precursor study has been conducted using normalized polarization ratio analysis based on Fast Fourier Transform (FFT). Three earthquakes in 2020 that have the magnitude (M) ≥ 5 and epicenter distance (R) ≤ 100 km were selected to be analyzed. The night-time geomagnetic signals of X, Y,...

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Hauptverfasser:	Dewi, Cinantya N., Febriani, Febty, Anggono, Titi, Syuhada, Hasib, Mohammad, Prasetio, Aditya D., Sulaiman, Albertus, Suprihatin, Hendra S., Ahadi, Suaidi, Syirojudin, Muhamad, Hasanudin, Marsyam, Indah
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Sprache:	eng
Schlagworte:	Earthquake prediction Earthquakes Extremely low frequencies Fast Fourier transformations Geomagnetism Precursors
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creator	Dewi, Cinantya N. Febriani, Febty Anggono, Titi Syuhada Hasib, Mohammad Prasetio, Aditya D. Sulaiman, Albertus Suprihatin, Hendra S. Ahadi, Suaidi Syirojudin, Muhamad Hasanudin Marsyam, Indah
description	An earthquake precursor study has been conducted using normalized polarization ratio analysis based on Fast Fourier Transform (FFT). Three earthquakes in 2020 that have the magnitude (M) ≥ 5 and epicenter distance (R) ≤ 100 km were selected to be analyzed. The night-time geomagnetic signals of X, Y, and Z components from the Sukabumi geomagnetic station (SKB) were extracted at frequencies 0.01 Hz until 0.06 Hz to analyze the SDR value of the SZ/SG component and determine the optimum frequency for detecting earthquake precursors. The results show that frequency 0.06 Hz is optimum to detect a possible earthquake precursor 1 day before the M5 earthquake on March 10, 2020 (EQ1). Meanwhile, the frequencies 0.03 Hz, 0.04 Hz, and 0.06 Hz are optimum to detect the possible precursors for the M5.1 earthquake on July 7, 2020 (EQ2) in a similar period, about 9.5 - 4 weeks before EQ2.
doi_str_mv	10.1063/5.0106349
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Three earthquakes in 2020 that have the magnitude (M) ≥ 5 and epicenter distance (R) ≤ 100 km were selected to be analyzed. The night-time geomagnetic signals of X, Y, and Z components from the Sukabumi geomagnetic station (SKB) were extracted at frequencies 0.01 Hz until 0.06 Hz to analyze the SDR value of the SZ/SG component and determine the optimum frequency for detecting earthquake precursors. The results show that frequency 0.06 Hz is optimum to detect a possible earthquake precursor 1 day before the M5 earthquake on March 10, 2020 (EQ1). Meanwhile, the frequencies 0.03 Hz, 0.04 Hz, and 0.06 Hz are optimum to detect the possible precursors for the M5.1 earthquake on July 7, 2020 (EQ2) in a similar period, about 9.5 - 4 weeks before EQ2.</description><subject>Earthquake prediction</subject><subject>Earthquakes</subject><subject>Extremely low frequencies</subject><subject>Fast Fourier transformations</subject><subject>Geomagnetism</subject><subject>Precursors</subject><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2022</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNp9kM1Kw0AUhQdRsFYXvsGAmyqkziSTSWepxapYcNEW3IWZyU0bbTLp_Ch9BN_alBZ05erA5TvnHg5Cl5QMKeHJbTokO2XiCPVomtIo45Qfox4hgkUxS95O0Zlz74TEIstGPfQ9XwE2ra_qUOPSwiZAo7e4NBYX4EH7qllikNavNkF-AG4t6GCdsQ4r6aDApsFh7a2M1ubrT8BgMZ1c4yWYWi4b8JXGhfSyA0yNZ-FDqlBXeDB7ub_GzktfmeYcnZRy7eDioH20mDzMx0_R9PXxeXw3jdqYJCLiiRIljYEBV5lUqhAEGGes1EynBWNUSF6MhKJCcV1oxlR3LjXhkKTASkj66Gqf21rTlXU-fzfBNt3LPM4S3g0zinlH3ewpp6t9v7y1VS3tNv80Nk_zw8x5W5T_wZTkO_DXkPwAMXWBrg</recordid><startdate>20221114</startdate><enddate>20221114</enddate><creator>Dewi, Cinantya N.</creator><creator>Febriani, Febty</creator><creator>Anggono, Titi</creator><creator>Syuhada</creator><creator>Hasib, Mohammad</creator><creator>Prasetio, Aditya D.</creator><creator>Sulaiman, Albertus</creator><creator>Suprihatin, Hendra S.</creator><creator>Ahadi, Suaidi</creator><creator>Syirojudin, Muhamad</creator><creator>Hasanudin</creator><creator>Marsyam, Indah</creator><general>American Institute of Physics</general><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20221114</creationdate><title>The optimum frequency for detecting earthquake precursors based on ultra-low frequency (ULF) geomagnetic data from Sukabumi (SKB) station</title><author>Dewi, Cinantya N. ; Febriani, Febty ; Anggono, Titi ; Syuhada ; Hasib, Mohammad ; Prasetio, Aditya D. ; Sulaiman, Albertus ; Suprihatin, Hendra S. ; Ahadi, Suaidi ; Syirojudin, Muhamad ; Hasanudin ; Marsyam, Indah</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p2039-63b9f12e4e6b7abbd90e4644fc4c5d4419a6d89b19b6cdc44bc5dfc06e35e4fe3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Earthquake prediction</topic><topic>Earthquakes</topic><topic>Extremely low frequencies</topic><topic>Fast Fourier transformations</topic><topic>Geomagnetism</topic><topic>Precursors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dewi, Cinantya N.</creatorcontrib><creatorcontrib>Febriani, Febty</creatorcontrib><creatorcontrib>Anggono, Titi</creatorcontrib><creatorcontrib>Syuhada</creatorcontrib><creatorcontrib>Hasib, Mohammad</creatorcontrib><creatorcontrib>Prasetio, Aditya D.</creatorcontrib><creatorcontrib>Sulaiman, Albertus</creatorcontrib><creatorcontrib>Suprihatin, Hendra S.</creatorcontrib><creatorcontrib>Ahadi, Suaidi</creatorcontrib><creatorcontrib>Syirojudin, Muhamad</creatorcontrib><creatorcontrib>Hasanudin</creatorcontrib><creatorcontrib>Marsyam, Indah</creatorcontrib><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dewi, Cinantya N.</au><au>Febriani, Febty</au><au>Anggono, Titi</au><au>Syuhada</au><au>Hasib, Mohammad</au><au>Prasetio, Aditya D.</au><au>Sulaiman, Albertus</au><au>Suprihatin, Hendra S.</au><au>Ahadi, Suaidi</au><au>Syirojudin, Muhamad</au><au>Hasanudin</au><au>Marsyam, Indah</au><au>Khaerudini, Deni Shidqi</au><au>Timuda, Gerald Ensang</au><au>Fauzi, Mohammad Hamzah</au><au>Shiddiq, Muhandis</au><au>Hardiansyah, Andri</au><au>Hasib, Mohammad</au><au>Wella, Sasfan Arman</au><au>Nugraha, Ahmad Ridwan T.</au><au>Suprayoga, Edi</au><au>Mustofa, Salim</au><au>Putri, Witha Berlian Kesuma</au><au>Kholili, M. Jauhar</au><au>Saputri, Wahyu Dita</au><au>Ariwahjoedi, Seramika</au><au>Adam, Apriadi Salim</au><au>Hanto, Dwi</au><au>Sunnardiarto, Gagus Ketut</au><au>Syuhada</au><au>Herbani, Yuliati</au><au>Sugiarto, Iyon Titok</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>The optimum frequency for detecting earthquake precursors based on ultra-low frequency (ULF) geomagnetic data from Sukabumi (SKB) station</atitle><btitle>AIP conference proceedings</btitle><date>2022-11-14</date><risdate>2022</risdate><volume>2652</volume><issue>1</issue><issn>0094-243X</issn><eissn>1551-7616</eissn><coden>APCPCS</coden><abstract>An earthquake precursor study has been conducted using normalized polarization ratio analysis based on Fast Fourier Transform (FFT). Three earthquakes in 2020 that have the magnitude (M) ≥ 5 and epicenter distance (R) ≤ 100 km were selected to be analyzed. The night-time geomagnetic signals of X, Y, and Z components from the Sukabumi geomagnetic station (SKB) were extracted at frequencies 0.01 Hz until 0.06 Hz to analyze the SDR value of the SZ/SG component and determine the optimum frequency for detecting earthquake precursors. The results show that frequency 0.06 Hz is optimum to detect a possible earthquake precursor 1 day before the M5 earthquake on March 10, 2020 (EQ1). Meanwhile, the frequencies 0.03 Hz, 0.04 Hz, and 0.06 Hz are optimum to detect the possible precursors for the M5.1 earthquake on July 7, 2020 (EQ2) in a similar period, about 9.5 - 4 weeks before EQ2.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0106349</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects	Earthquake prediction Earthquakes Extremely low frequencies Fast Fourier transformations Geomagnetism Precursors
title	The optimum frequency for detecting earthquake precursors based on ultra-low frequency (ULF) geomagnetic data from Sukabumi (SKB) station
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