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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林日白 | zh_TW |
dc.contributor.advisor | Jih-Pai Lin | en |
dc.contributor.author | 陳又嘉 | zh_TW |
dc.contributor.author | Yu-Chia Chen | en |
dc.date.accessioned | 2024-02-22T16:25:46Z | - |
dc.date.available | 2024-02-23 | - |
dc.date.copyright | 2024-02-22 | - |
dc.date.issued | 2024 | - |
dc.date.submitted | 2024-02-01 | - |
dc.identifier.citation | Andréis, D., MacGregor, L. (2008). Controlled-source electromagnetic sounding in shallow water: principles and applications. Geophysics 73, F21–F32.
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/91725 | - |
dc.description.abstract | 大地電磁法(Magnetotellurics, MT) 是一種非破壞性被動源的地球物理探勘方法,被廣泛應用在能源探勘和地球構造研究。臺灣位處於歐亞板塊和菲律賓板塊交界帶,地殼活動頻繁,自從MT法引入臺灣之後,已有許多學者與研究機構利用此套方法研究臺灣的電性構造。海洋電磁法(Marine magnetotelluric)是其中一種在海域進行的MT探勘技術,各國爭相發展海底大地電磁儀(Ocean Bottom Electro -magnetometer, OBEM)進行海底探勘的同時,國內也自主研發出佈放於深海的OBEM。儘管過去數十年來OBEM在深海探勘研究已經蓬勃發展,但水深小於300公尺的淺海區僅有少量MT測量相關研究。與深海探勘相比,淺水及沿海地區進行地球物理探勘相對複雜,MT方法需要測量的電磁訊號頻段容易受到海浪運動雜訊和人為設施的干擾。此外,具有足夠載重的研究船因吃水深度緣故在淺海地區難以行駛,頻繁的漁業活動也不利於研究進行,綜合上述原因,我們在前人的研究基礎之上,以深海型OBEM為參考,開發出可以使用小型船隻進行佈放與收回作業的淺海型OBEM,並期望運用此儀器進行淺海區域的大地電磁高密度探測,解析臺灣淺海及附近區域地下構造。 | zh_TW |
dc.description.abstract | Magnetotellurics (MT) is a non-destructive passive source geophysical exploration method widely used in energy exploration and Earth structure research. Taiwan is located at the convergence zone of the Eurasian Plate and the Philippine Sea Plate, with frequent crustal activities. Since the introduction of the MT method to Taiwan, many scholars and research institutions have utilized this method to study Taiwan''s electrical structure. Marine Magnetotellurics (Marine MT) is one of the MT survey techniques conducted in marine areas. While countries worldwide are actively developing Ocean Bottom Electro-magnetometers (OBEM) for seafloor exploration, domestic efforts have also independently developed OBEMs for deployment in deep-sea environments.
Despite the flourishing development of OBEMs in deep-sea exploration over the past decades, there has been limited research on MT measurements in shallow waters with depths less than 300 meters. Compared to deep-sea exploration, conducting geophysical exploration in shallow and coastal areas is relatively complex. The frequency range of electromagnetic signals that MT methods require measurements for is susceptible to interference from wave-induced motion noise and human-made facilities. Additionally, research vessels with sufficient payload capacity face challenges navigating in shallow sea areas due to draft limitations. Frequent fishing activities also hinder research efforts. Considering these factors and building upon previous research, we developed a shallow-water OBEM based on deep-sea OBEMs that can be deployed using small vessels. We aim to utilize this instrument for high-density electromagnetic exploration in shallow-sea regions, unraveling the underground structures of Taiwan''s shallow seas and nearby areas. | en |
dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2024-02-22T16:25:46Z No. of bitstreams: 0 | en |
dc.description.provenance | Made available in DSpace on 2024-02-22T16:25:46Z (GMT). No. of bitstreams: 0 | en |
dc.description.tableofcontents | 目錄
學位審定書 ⅰ 誌謝 ⅱ 摘要 ⅳ ABSTRACT v 目次 vi 圖次 x 表次 xv 第一章 緒論 …...………………………………………………………………………...1 1.1 研究動機…...………………………………………………………………....1 1.2文獻回顧 2 1.3論文架構 4 第二章 SOBEM的設計 5 2.1 SOBEM與深海型OBEM之差異 5 2.2 設計架構 6 2.3 SOBEM元件詳細規格與功能 8 2.4 機構設計 11 2.4.1 儀器載台設計 11 2.4.2 儀器水密艙體設計 13 2.4.3電極伸展臂設計 17 2.4.4 浮標設計 21 2.4.5錨碇設計 22 2.5電路設計 22 2.5.1 SOBEM電路系統設計 25 2.5.2信號調整器 27 第三章 SOBEM 的檢測方法 35 3.1 機構部分 35 3.1.1電極伸展臂測試 35 3.1.2艙體水密測試 35 3.1.3儀器重量測試 37 3.1.4浮標載台測試 38 3.1.5錨碇測試 38 3.2感測元件檢測方法 39 3.2.1磁力感測器 39 3.2.2 Tiltmeter 40 3.3.3非極化電極 41 3.3資料記錄器檢測方法 43 3.3.1 背景雜訊 44 3.3.3 動態範圍 45 3.4 AIS測試 46 3.5電力消耗測試 47 3.6整合測試 48 3.6.1室內測試 48 3.6.2港池測試 49 第四章 SOBEM 的檢測結果 50 4.1 機構部分 50 4.1.1電極伸展臂測試結果 50 4.1.2艙體水密測試結果 53 4.1.3儀器重量測試結果 53 4.1.4浮標測試結果 53 4.1.5錨碇測試結果 54 4.2感測元件檢測結果 54 4.2.1 磁力感測器 54 4.2.2 Tiltmeter 57 4.2.3 非極化電極 57 4.3資料記錄器檢測結果 60 4.2.2 線性度誤差檢測結果 62 4.2.3 動態範圍檢測結果 66 4.4 AIS測試結果 66 4.5 電力消耗測試結果 67 4.6 整合測試結果 68 4.6.1 室內測試結果 68 4.6.2 港池測試結果 69 第五章 SOBEM 佈放收回方法 73 5.1佈放與收回方法 73 5.2佈放作業程序設計 73 5.3收回作業程序設計 74 第六章 SOBEM資料處理方法及初步成果 75 6.1 資料處理方法 75 6.2 野外資料處理初步成果 76 第七章 討論與結論 80 7.1 儀器水密艙體問題 80 7.2資料紀錄器耗電問題 80 7.3 電場飽和 80 7.4佈放問題 81 7.5與日本製SOBEM比較 81 7.6 結論 84 7.7 未來展望 85 參考文獻 86 附錄 A磁力感測器規格書 92 附錄 B Tiltmeter 規格書 103 附錄 C 非極化電極規格書 108 附錄 D 一次性鋰電池規格書 110 附錄 E AIS網位儀規格書 112 附錄 F SOBEM相關零件工程圖 115 附錄 G SOBEM佈放 SOP 120 附錄 H SOBEM收回 SOP 122 | - |
dc.language.iso | zh_TW | - |
dc.title | 淺海型海底電磁儀的研發與元件驗證方法 | zh_TW |
dc.title | Development and Component Validation of Shallow Ocean Bottom Electro-magnetometer | en |
dc.type | Thesis | - |
dc.date.schoolyear | 112-1 | - |
dc.description.degree | 碩士 | - |
dc.contributor.coadvisor | 林慶仁 | zh_TW |
dc.contributor.coadvisor | Ching-Ren Lin | en |
dc.contributor.oralexamcommittee | 陳建志;張竝瑜 | zh_TW |
dc.contributor.oralexamcommittee | Chien-Chih Chen;Ping-Yu Chang | en |
dc.subject.keyword | 大地電磁法(MT),海洋電磁法,海底大地電磁儀(OBEM),電性構造,地球物理探勘, | zh_TW |
dc.subject.keyword | Magnetotellurics,Marine magnetotelluric,Ocean Bottom Electro-magnetometer,Geoelectrical structure,Geophysical Prospecting, | en |
dc.relation.page | 123 | - |
dc.identifier.doi | 10.6342/NTU202400360 | - |
dc.rights.note | 同意授權(全球公開) | - |
dc.date.accepted | 2024-02-04 | - |
dc.contributor.author-college | 理學院 | - |
dc.contributor.author-dept | 地質科學系 | - |
顯示於系所單位: | 地質科學系 |
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