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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 吳逸民(Yih-Min Wu) | |
| dc.contributor.author | Huan-Chun Chen | en |
| dc.contributor.author | 陳奐鈞 | zh_TW |
| dc.date.accessioned | 2021-06-17T04:43:13Z | - |
| dc.date.available | 2020-09-03 | |
| dc.date.copyright | 2020-09-03 | |
| dc.date.issued | 2020 | |
| dc.date.submitted | 2020-08-20 | |
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Imaging the nonvolcanic tremor zone beneath the San Andreas fault at Cholame, California using station-pair double-difference tomography. Earth and Planetary Science Letters, 460, 76–85. https://doi.org/10.1016/j.epsl.2016.12.006 陳文山、林益正、顏一勤、楊志成、紀權窅、黃能偉、林啟文、林偉雄、侯進雄、劉彥求、林燕慧、石同生、盧詩丁 (2008) 從古地震研究與GPS資料探討縱谷斷層的分段意義。經濟部中央地質調查所特刊，第20號，第165-191 頁。 陳文山 (2016) ，台灣地質概論，中華民國地質學會 張建興 (2020) ，氣象局地震監測網簡介，台灣地震科學中心通訊，通訊第三期第五章。（最後訪問時間為2020年5月） 取自https://tec.earth.sinica.edu.tw/upload/publications/html/201403/03_05.php。 寬頻地震網 (2020) ，中央氣象局地震測報中心，各種觀測網介紹。（最後訪問時間為2020年5月） 取自https://scweb.cwb.gov.tw/zh-TW/page/ObservationNetwork/172。 鄧屬予 (2002) 板塊間看台灣地震。科學發展，第350卷，第12-19頁。 取自http://homepage.ntu.edu.tw/~tengls/geo-info_earthquake.htm。 | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/70905 | - |
| dc.description.abstract | 台灣位處歐亞板塊及菲律賓海板塊的板塊聚合處，劇烈的地殼變形作用之下在台灣東部形成碰撞縫合帶─縱谷斷層系統，此斷層系統不僅是台灣重要的地質構造單元，同時亦為災害性地震的好發地，如2013年的瑞穗地震、2014年的鳳林地震及2018年的花蓮地震，皆造成建築倒塌與人員傷亡等重大災害。即便如此，目前對於詳細的縱谷斷層系統的了解仍然有限。由於這些近期中大型地震序列多發生在未知或過去了解有限的構造上，提供了過去沒有記錄到的額外地震資料。加上自2012年開始，中央氣象局新一代的地震觀測網已排除過去遠距傳輸延遲可能造成的時間誤差，大幅提升資料的準確性。因此，我們利用2012年後的近期地震資料與雙差分地震層析成像法進行台灣東部地震層析成像的反演，加強解析與探討縱谷斷層系統的地下斷層幾何構造，並與Kuo-Chen et al. (2012)與Huang et al. (2014)的速度模型比較，發現本研究的速度模型與地表斷層的形貌更為吻合之外，在平行縱谷走向的剖面中，於利吉層出露位置下方發現相應的低速構造，也在奇美斷層的位置發現一個高速體切穿淺層的低速體，在垂直縱谷走向的剖面中，看到更細微的構造邊界並且觀察到縱谷北段西傾的地震分佈切穿一個高速體，推測此西傾構造並非發育在岩性邊界。後續研究可以結合波形交相關計算求取更精確的相對走時，進一步提升反演模型的精準度。 | zh_TW |
| dc.description.abstract | Taiwan is located at the plate boundary between the Eurasian plate and the Philippine Sea plate, where severe oblique collision is ongoing and results in a suture zone with a complicated Longitudinal Valley fault system (LVFS) in eastern Taiwan. This fault system is not only an important tectonic division but also capable of producing frequent damaging earthquakes, such as 2013 Ruisui earthquake, 2014 Fenglin earthquake, 2018 Hualien earthquake, etc. However, the understanding of the detailed LVFS fault geometry and segmentation at depths is still limited. The recent earthquakes ruptured several blind faults that were not identified in the past and provided more information than before for investigating the fault system. In addition, a new generation of Central Weather Bureau seismic network which eliminates telemetry delay issues also provides data with better time accuracy since 2012. Therefore, this study is aimed to revisit the LVFS at higher resolution with the new dataset from January 2012 to June 2019 and double difference tomography method. Comparing with the result from Kuo-Chen et al. (2012) and Huang et al. (2014), our results demonstrate that the new imaging show more detailed and sharpened features in correlation with geological units and LVFS. In NNE-SSW cross-sections, we find a low velocity structure beneath Lichi Melange and a relative high velocity structure near Chimei fault. In EES-WWN cross-sections, we can see a west-dipping seismic zone cutting through a high velocity body, which implies a fault structure rather than a lithological boundary. Waveform cross-correlation technique to calculate relative arrival times can be further combined to help improve and derive an even finer velocity model in the future. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-17T04:43:13Z (GMT). No. of bitstreams: 1 U0001-2008202009133900.pdf: 10947195 bytes, checksum: 44a961e060c45de613c5289aa52c1411 (MD5) Previous issue date: 2020 | en |
| dc.description.tableofcontents | 口試委員會審定書 # 誌謝 i 中文摘要 ii ABSTRACT iii 目 錄 iv 圖目錄 vi 表目錄 x Chapter 1 緒論 1 1.1 前言 1 1.2 研究動機與目的 2 1.3 文獻回顧 3 1.3.1 台灣的碰撞造山史 3 1.3.2 縱谷區域地質簡介 8 1.3.3 縱谷斷層活動記錄 11 1.3.4 台灣的地震層析成像研究 13 1.4 研究內容 14 Chapter 2 研究資料與方法 15 2.1 研究資料 15 2.2 波線走時層析成像反演法（Travel-time tomographic inversion） 18 2.3 雙差分層析成像反演法（Double-difference tomographic inversion） 21 Chapter 3 模型反演參數與解析度測試 24 3.1 模型設定 24 3.2 反演參數測試（Trade-off tests on damping and smoothing） 25 3.3 棋盤格解析度測試 27 3.4 合成資料測試 30 Chapter 4 結果與討論 36 4.1 平面與剖面的成像結果 36 4.2 初始模型的影響 44 4.3 與前人研究的模型比較 （K12, H14） 47 4.4 縱谷斷層系統構造分析與討論 53 Chapter 5 結論 54 參考文獻 55 附錄A 62 附錄B 63 附錄C 65 附錄D 66 附錄E 67 | |
| dc.language.iso | zh-TW | |
| dc.subject | 雙差分地震層析成像法 | zh_TW |
| dc.subject | 三維速度模型 | zh_TW |
| dc.subject | 縱谷斷層系統 | zh_TW |
| dc.subject | Longitudinal Valley fault | en |
| dc.subject | double-difference tomography | en |
| dc.subject | velocity model | en |
| dc.title | 以雙差分地震層析成像法探討台灣東部縱谷斷層系統構造 | zh_TW |
| dc.title | Fault zone imaging of the Longitudinal Valley fault system in eastern Taiwan using double difference tomography | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 108-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.coadvisor | 黃信樺(Hsin-Hua Huang) | |
| dc.contributor.oralexamcommittee | 郭陳澔(Hao Kuo-Chen),溫士忠(Strong Wen) | |
| dc.subject.keyword | 縱谷斷層系統,三維速度模型,雙差分地震層析成像法, | zh_TW |
| dc.subject.keyword | Longitudinal Valley fault,velocity model,double-difference tomography, | en |
| dc.relation.page | 68 | |
| dc.identifier.doi | 10.6342/NTU202004123 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2020-08-20 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 地質科學研究所 | zh_TW |
| 顯示於系所單位： | 地質科學系 | |
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