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系統識別號 U0026-2507201115031600
論文名稱(中文) 鹿林觀測站極低頻磁場訊號特徵與台灣地震活動之關係
論文名稱(英文) Characteristics of Magnetic Signals Observed at Lulin ELF Station and Their Association with Earthquakes in Taiwan
校院名稱 成功大學
系所名稱(中) 太空天文與電漿科學研究所
系所名稱(英) Assistant, Institute of Space, Astrophysical and Plasma Sciences(ISAPS)
學年度 99
學期 2
出版年 100
研究生(中文) 何紹民
研究生(英文) Shao-Min Ho
電子信箱 smho@isaps.ncku.edu.tw
學號 la6984034
學位類別 碩士
語文別 中文
論文頁數 62頁
口試委員 共同指導教授-陳炳志
指導教授-汪愷悌
口試委員-蘇漢宗
中文關鍵字 極低頻磁場擾動  極化分析  地震活動  地磁活動 
英文關鍵字 ELF disturbances  polarization analysis  seismic activities  geomagnetic activities 
學科別分類
中文摘要 我們分析成功大學ISUAL團隊在鹿林前山(東經120.87° , 北緯23.46°, 海拔2862公尺)建置的極低頻磁場量測系統所紀錄之磁場資料,我們利用此量測系統的兩根分別平行於地磁南北向(H)與東西向(D)之天線所偵測之資料,研究2009年至2010年頻率低於10赫以下訊號與地震之相關性。
在本研究中,我們使用極化參數分析法的計算程式,用以分析天線所偵測到之兩方向極低頻磁場訊號的物理參數,可用來了解訊號的極化特性以及其偏振軸與南北向天線的夾角。目前我們分析並比較2009年10月至2010年09月共為期一年的各項資料,並使用傅立葉頻譜與極化參數,來計算極低頻磁場訊號之相關參數並與地磁及地震活動比較。在地震資料方面則是依震源發生處之斷層性質將其分為三區(台灣島區、琉球海溝區和呂宋島弧區),並比較與極低頻磁場分析結果的相關性。另外,並與地磁指數比較,排除訊號是由地磁擾動或磁暴所造成的可能性。結果顯示極低頻磁場異常訊號和地震活動的相關性較高,特別是台灣島上斷層所發生的地震,其在地震發生前較其他兩區有更高度的相關性,而與地磁擾動或磁暴的發生並無直接且顯著的關聯性。
英文摘要 We analyze the magnetic field data recorded by ELF antennas operated by ISUAL project of NCKU at Lulin Observatory in Taiwan (120.87°E , 23.46°N, 2862m). The data adopted in this analysis is from year of 2009 to 2010 with wave signals below 10Hz primarily investigated. The signals are measured in both H (north-south) and D (east-west) components.
In this study, we focus on developing computing codes to derive parameters associated with polarizations from these two observed components. The ellipticity, orientation, and sense of polarization can then be calculated. We use Fourier and polarization analysis to analyze ELF magnetic field data and then compare these ELF results with geomagnetic and seismic data from 2009 to 2010. The seismic events are categorized in three different regions( Taiwan Island, Okinawa trough, Luzon Arc), based on the fault feature of the epicenters, and the association with the analyzed ELF event parameters are studied. In addition, the geomagnetic index are also compared and the ELF emissions are found to have little possibility to be deduced from geomagnetic activities or storms. The results suggest that the observed ELF disturbances are more sensitive to seismic events before main shock, especially for events occurred on Taiwan Island compared with the other two regions. These results also show us the ELF signals do not relate with geomagnetic activities and storms.
論文目次 摘要 II
Abstract III
致謝 IV
圖目錄 VI
表目錄 IX
第一章 緒論 1
第二章 極低頻(ELF)磁場量測系統 3
2.1簡介 3
2.2成功大學極低頻(ELF)波段觀測系統 3
第三章 地震與地磁活動 7
3.1地磁活動 7
3.2地震活動 9
第四章 分析方法 12
4.1傅立葉分析 12
4.2極化分析 13
4.3相關性分析 15
第五章 統計分析極低頻磁場異常訊號 16
5.1頻譜與極化分析結果 17
5.2地磁相關性分析結果 20
5.2.1 Dst指數比較結果(不同頻率的比較) 20
5.2.2 Dst指數(Dst小於 -30nT)比較結果 21
5.2.3 Kp指數比較結果(不同頻率的比較) 23
5.2.4 Kp指數(Kp大於5)比較結果 24
5.3地震相關性分析結果 26
5.3.1台灣島區地震(規模5以上)比較結果 26
5.3.2琉球海溝區地震(規模5以上)比較結果 27
5.3.3呂宋島弧區地震(規模4以上)比較結果 29
5.4地震前後相關數比例分析結果 31
第六章 結論與討論 33
參考文獻 35
附錄一:台灣地震的時空分佈(2009/10–2010/09) 37
附錄二:極低頻磁場訊號分析結果 49
參考文獻 王乾盈(1997),「台灣地震觀測」,地球科學園地,三月春季《創刊號》。
卓裕榮(2002),「電離層地震前兆之研究」,國立中央大學太空科學研究所博士論文。
許長仁(2009),「BF-4極低頻天線校正及閃電電荷矩計算」,國立成功大學物理學研究所碩士論文。
鄭勝文、邱逢琛(1997),水下技術概論,國立編譯館。
蘇漢宗(2003),「低頻無線電波閃電定位系統之建立與應用」,國家太空中心研究計畫結案報告。
Adams, M.H. (1990), “Some observations of electromagnetic signals prior to California earthquakes”, J. Sci. Explor., 4, 137.
Belov, S.V., Migunov, N.I., and Sobolev, G.A. (1974), “Megnetic effects accompanying strong earthquakes on Kamchatka”, Geomagn. Aeron., 14, 321.
Bortnik, J., Bleier, T.E., Dunson, C., and Freund, F. (2010), “Estimating the seismotelluric current required for observable electromagnetic ground signals”, Ann.Geophys., 28, 1615-1624, doi:10.5194/angeo-28-1615-2010.
Cress, G.O., Brady, B.T., and Rowell, G.A. (1987), “Sources of electromagnetic radiation
from fracture of rock samples in laboratory”, Geophys. Res. Lett., 14, 331-334.
Dea, J.Y., Richman, C.I., and Boerner, W.M. (1991), “Observations of seismo- electromagnetic earthquake precursor radiation signatures along Southern California fault zone : Evidence of long-distance precursor ultra-low frequency signals observed before a moderate Southern California earthquake episode”, Can. J. Phys., 69, 1138.
Enomoto, Y. and Hashimoto, H. (1990), “Emission of charged particles from indentation
fracture of rocks”, Nature, 346, 641-643.
Freund, F. (2000), “Time-resolved study of charge generation and propagation in igneous
rocks”, J. Geophys. Res., 105, 11001-11020 DOI: 10.1029/1999JB900423.
Freund, F., Kulahci, I., Gary Cyr, Julia Ling, Winnick, M., Jeremy Tregloan-Reed, and Freund, M. (2009), “Air ionization at rock surfaces and pre-earthquake signals”, Journal of Atmospheric and Solar-Terrestrial Physics., 1824-1834, doi:10.101
6/j.jastp.2009.07.013.
Fukunishi, H. (2001), “Lightning Effects in the Ionosphere”.
Gao et al. (2007), Multiscale Analysis of Complex Time Series(1sted.), John Wiley & Sons, Inc.
Geohberg, M.B., Morgunov, V.A., Yoshino, T., and Tomizawa, I. (1982), “Experimental measurement of electromagnetic emissions possibly related to earthquakes in Japan”, J. Geophys. Res., 87, 7842.
Kopytenko, Yu.A., Matiashvili, T.G., Voronov, P.M., Kopytenko, E.A., and Molchanov, O.A. (1993), “Detection of ULF emissions connected with the Spitak earthquake and its aftershock activity, based on geomagnetic pulsation data at Dusheti and Vardzia observatories”, Phys. Earth Planet. Inter., 77, 85.
Mitsuteru Sato, Hiroshi Fukunishi, Masayuki Kikuchi, Hisao Yamagishi, Walter A. Lyons(2003), “Validation of sprite-inducing cloud-to-ground lightning based on ELF observations at Syowa station in Antarctica”, Journal of Atmospheric and Solar-Terrestrial Physics, 65, 607–614, doi:10.1016/S1364-6826(02)00379-9.
Molchanov, O.A., Kopytenko, Yu.A., Voronov, P.M., Kopytenko,E.A., Matiashvili, T.G., Fraser-Smith, A.C., and Bernardi, A. (1992), “Results of ULF magnetic field measurments near the epicenters of the Spitak (Ms=6.9) and Loma Prieta (Ms=7.1) earthquakes:comparative analysis”, Geophys. Res. Lett., 19, 1495.
Ogawa, T., K., Oike, and Miura, T. (1985), “Electromagnetic radiation from rocks”,
J. Geophys. Res., 90, 6245-6249.
Schekotov, A.Y., Molchanov, O.A., Hayakawa, M., Fedorov, E.N., Chebrov, V.N., Sinitsin, V.I., Gordeev, E.E., Belyaev, G.G. and Yagova, N.V. (2007), “ULF/ELF magnetic field variation from atmosphere induced by seismicity”, Radio Science, VOL. 42, doi:10.1029/2005RS003441.
Warwick, J.W., Stoker, C., and Meyer, T.R. (1982), “Radio emission associated with rock fracture : possible application to the great Chilean earthquake of May 22, 1960”, J. Geophys. Res., 87, 2851.
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