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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳勁吾(Chin Wu Chen) | |
dc.contributor.author | Che-Hao Hsu | en |
dc.contributor.author | 許哲豪 | zh_TW |
dc.date.accessioned | 2021-06-15T11:16:53Z | - |
dc.date.available | 2021-08-26 | |
dc.date.copyright | 2016-08-26 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2016-08-19 | |
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(2006), GPS constraints on continental deformation in the Africa- Arabia-Eurasia continental collision zone and implications for the dynamics of plate interactions, J. Geophys. Res., 111(B5), doi:10.1029/2005jb004051. Silver, P. G., and T. H. Jordan (1982), Optimal estimation of scalar seismic moment,Geophys. J. Roy. Astron. Soc., 70(3), 755-787, doi: 10.1111/j.1365- 246X.1982.tb05982.x. Shengelia, I., Javakhishvili, Z., & Jorjiashvili, N. (2011). Coda wave attenuation for three regions of Georgia (Sakartvelo) using local earthquakes. Bull. Seism. Soc. Am., 101(5), 2220-2230. doi:10.1785/0120100326 Shillington, D. J., Scott, C. L., Minshull, T. A., Edwards, R. A., Brown, P. J., & White, N. (2009). Abrupt transition from magma-starved to magma-rich rifting in the eastern Black Sea. Geology, 37(1), 7-10. doi:10.1130/g25302a.1 Starostenko, V., Buryanov, V., Makarenko, I., Rusakov, O., Stephenson, R., Nikishin, A., . . . Sava, C. (2004). 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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/49131 | - |
dc.description.abstract | 阿拉伯板塊和歐亞板塊之間的碰撞在土耳其產生大型橫移斷層、將東安納托尼亞抬升為高原、並在高加索形成山脈。然而高加索旁邊的黑海區域,是個相對穩定的構造,也鮮少中大規模地震的發生。過去的研究裡高加索地區的震源機制多是利用遠震的波形資料針對中大規模的地震求解,小地震的研究較為缺乏,約束也較差。本研究使用新的測站陣列,設定東經40–47度、北緯40–44度為研究範圍,以區域波形資料分析2012年1月1日至2014年5月30日間、規模3.5以上的地震之震源機制和深度,新增地震共20筆,並更新4筆前人結果,主要成果在東部黑海以及小高加索扎瓦赫季高地兩區域。
其中2012年12月23日在東黑海區域的Shatskty Ridge發生一起規模5.8之地震序列,為地震網架設期間所難得紀錄到之地震事件,位處複雜的拉張大陸地殼上。本研究之震源機制結果顯示這一序列共六個主餘震全部為走向滑移的型態,破裂深度為20-30公里,五個機制解的位置呈西北西–東南東走向並與其中一斷層面方位相符,判定主震為左移斷層,另一群餘震向東北方較淺處分布。根據鄰近區域的震測剖面資料,我們推斷本地震的發生可能發生在過去弧後張裂所生成之舊有正斷層系統上,受現今擠壓應力重新發育成走向滑移斷層,而主震發生後,又引發了東北方另一條走向滑移斷層的錯動,次斷層走向與主斷裂垂相直,可對應至洋盆張裂期形成的轉型斷層。 另外,在群震頻繁的小高加索扎瓦赫季火山高地上已累積共20個震源機制,大多為走向滑移斷層,僅在北部出現3個小的逆衝事件,我們發現在扎瓦赫季山脊東部的走向滑移地震帶有少許東西拉張分量,和地表上的正斷層及GPS的東西相對運動相符。 | zh_TW |
dc.description.abstract | The continental collision between Arabia and Eurasia created the strike-slip fault conjugates in Anatolia as well as the folds and thrust belts in the Caucasus Mountains. The Black Sea, on the contrary, is tectonically stable and absent of notable earthquakes. In previous studies, focal mechanisms in the Caucasus regions are determined primarily for large earthquakes using global waveform data. Small earthquakes are primarily studied with polarity data, thus the reliability of focal mechanisms highly depends on station coverage.
In this study we use regional waveforms of a new seismic array to constrain the focal mechanisms and depths of the earthquakes with M>3.5 in the Greater Caucasus, Trans-Lesser Caucasus (mainly in Javakheti Highland) and the eastern Black Sea. There is a total of 20 new events for the studied area (Latitude 40–44⁰N and Longitude 40–47⁰E) in time period 2012.01.01–2014.05.30. We also update 4 focal mechanisms from previous study. On December 12 of 2012, an M 5.8 earthquake sequence occurred in the eastern Black Sea region beneath an extended continental margin called Shatsky Ridge. The fault plane solutions of the main shock and 5 aftershocks are all in strike-slip faulting. Depth of rupture is as deep as ~30 km. Location of five focal mechanisms is aligned at WNW-ESE direction, which coincides with one of the fault plane, indicating left-lateral slip. A group of small aftershocks scattered toward northeast direction at shallower depth. Based on the seismic reflection profiles nearby, we conclude that the main rupture fall along the existing normal fault created associated with back-arc spreading of Eastern Black Sea basin in the past, but now reactivated as strike-slip due to compressive stress. A second rupture is triggered along a conjugate fault perpendicular to the main fault, which can be correlated with a transform fault developed during the ocean spreading. Javakheti is a volcanic highland where swarms of small earthquakes are continuously occurring in its eastern ridge. Collectively, the total of 20 earthquakes here is dominated by strike-slip faulting. Only three small thrust events are found in north of the swarm area. Earthquakes in eastern foothill of Javakheti ridge show small amount of normal-faulting component, which indicates east-west extension, consistent with the fault outcrops nearby and the east-west relative motion form GPS data. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T11:16:53Z (GMT). No. of bitstreams: 1 ntu-105-R02241317-1.pdf: 12463190 bytes, checksum: 1c983a16271fe0112f9d2d1e0397e6a0 (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 論文內容
口試委員審定書……………………………………………………………………...# 致謝…………………………………………………………………………………….i 中文摘要……………………………………………………………………………...iii 英文摘要……………………………………………………………………………...iv 論文內容……………………………………………………………………………...vi 圖目錄…………...…………………………………………………………………..viii 表目錄…….……………………………………………………………………....…..ix 第一章 緒論………………………………………………………………….……….1 1.1研究區域介紹………………………………………………………..…..1 1.2黑海簡介………………………………………………………….…….. 5 1.3 研究動機與目的………………………………………………………..14 1.4 本文內容……………………………………………………………......14 第二章 研究理論與方法……………………………………………………………15 2.1 地震矩張量…………………………………………………………… 17 2.2觀測地震波與震源之關係……………………………………………..23 2.2.1理論地震波………………………………………………………….23 2.3格林函數……………………………………………………………..…24 2.4逆推方法………………………………………………………………..25 2.4.1波形資料逆推震源參數……...……………………………………..25 2.4.2誤差判斷…………………………………………………………….27 第三章 資料分析……………………………………………………………….…...29 3.1波形資料處理…………………………………………………………..29 3.1.1地震資料來源………………………………………….................29 3.2前置資料處理…………………………………………………………..31 3.3逆推程序與參數設定…………………………………………………..31 第四章 結果與討論…………………………………………………………………39 4.1區域波形逆推總體結果………………………………….…………….39 4.2東黑海盆地………………………………………………………….….44 4.3小高加索扎瓦赫季高地Javakheti………………………………….….48 第五章 結論………………………………………………………………………....51 參考文獻………..…………………………………………………………………....52 附錄A 高加索區域之寬頻測站儀器對照表及運轉起訖時間………….…………60 附錄B 儀器響應檢驗與修正…………………………………………….…………67 附錄C. 高加索地區用以分析震源機制之地震目錄。…………………………....69 附錄D. 本研究逆推結果之地震參數……………………………………………....71 附錄E. 黑海地區地殼側向變化及波形差異………………………………………73 附圖E.1……………………………………………………………………74 附圖E.2……………………………………………………………………75 附錄F. 圖4.2所用之地震資料整理與來源………………………………………..76 附表F1. 區域資料所得的震源參數………………………………………………..76 附表F2. 遠震資料所得的震源參數……………….……………………………….79 附錄G.1. 東黑海盆中心之Two-way traveltime與深度換算…………….………...83 附錄G.2 Shatsky Ridge附近之Two-way traveltime與深度換算………………....84 附錄H 高加索地區震源機制之波形逆推結…………………………………….…85 | |
dc.language.iso | zh-TW | |
dc.title | 以區域波形震源逆推探討黑海東部及小高加索扎瓦赫季高地之地震特性 | zh_TW |
dc.title | Using Regional Waveform Source Inversion to Investigate the Earthquake Properties in Eastern Black Sea and the Javakheti Highland in the Lesser Caucasus | en |
dc.type | Thesis | |
dc.date.schoolyear | 104-2 | |
dc.description.degree | 碩士 | |
dc.contributor.coadvisor | 曾泰琳(Tai Lin Tseng) | |
dc.contributor.oralexamcommittee | 胡植慶(Jyr-Ching Hu),黃柏壽(Bor-Shouh Huang) | |
dc.subject.keyword | 高加索,黑海,震源機制,波形逆推,大陸碰撞,火山高原, | zh_TW |
dc.subject.keyword | Caucasus,Black Sea,source mechanism,waveform inversion,continental collision,volcanic plateau, | en |
dc.relation.page | 109 | |
dc.identifier.doi | 10.6342/NTU201603135 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2016-08-20 | |
dc.contributor.author-college | 理學院 | zh_TW |
dc.contributor.author-dept | 海洋研究所 | zh_TW |
顯示於系所單位: | 海洋研究所 |
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