Repository logo
  • English
  • 中文
Log In
Have you forgotten your password?
  1. Home
  2. Research Center / 研究中心
  3. University-Level Research Centers / 校級研究中心
  4. Ocean Center / 海洋中心
  5. Distribution and characteristics of gas chimneys in the passive margin offshore SW Taiwan
 
  • Details

Distribution and characteristics of gas chimneys in the passive margin offshore SW Taiwan

Journal
Marine Geophysical Research
Journal Volume
42
Journal Issue
3
Date Issued
2021
Author(s)
Han W.-C
Chen L
CHAR-SHINE LIU  
DOI
10.1007/s11001-021-09447-9
URI
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111331731&doi=10.1007%2fs11001-021-09447-9&partnerID=40&md5=1be6ef210e8e7424644d822332ee89ab
https://scholars.lib.ntu.edu.tw/handle/123456789/606421
Abstract
We analyzed original and published seismic data to investigate the distribution and characteristics of subsurface fluid flow features in the gas hydrate provinces along the northeastern South China Sea (SCS) continental slope, including Jiulong Ridge, Horseshoe Ridge, Pointer Ridge, and Formosa Ridge. Numerous features indicating the presence/migration of hydrocarbons, such as bottom simulating reflections (BSRs), bright spots, gas chimneys, and fluid flow through faults, are identified. The results reveal that the hydrofracturing-induced gas chimneys act as the primary conduits for the overall focused fluid flow in the study area, though fluid flow along permeable faults is also observed at Pointer Ridge. Thirty-three gas chimneys identified are categorized into two types depending on their capability for focused fluid flow migrating into the gas hydrate stability zone (GHSZ). The type-I chimneys that transport fluids into the GHSZ contribute to gas hydrate formation and may even lead to seafloor seepage. Buried by a considerable thickness of sediments, the type-II chimneys cannot directly contribute to generating gas hydrate and surface seepage. Our results suggest that the sedimentary processes and fluid accumulation significantly control the development of gas chimneys in the study area. Since the focused fluid flow conduits that indicate overpressured fluids are critical pathways that feed gas into the GHSZ and form gas hydrates, utmost attention should be paid to them during hydrocarbon exploration. ? 2021, The Author(s), under exclusive licence to Springer Nature B.V.
Subjects
Focused fluid flow
Gas chimneys
Gas hydrates
Seismic reflection
South China Sea
Taiwan
Chimneys
Gases
Hydration
Hydrocarbon seepage
Hydrocarbons
Natural resources exploration
Offshore oil well production
Seismology
Transport properties
Bottom simulating reflection
Continental slope
Fluid accumulation
Gas hydrate stability zones
Hydrate formation
Hydrocarbon exploration
Sedimentary process
Subsurface fluid flow
Flow of fluids
fluid flow
gas hydrate
hydrocarbon exploration
passive margin
seepage
seismic data
seismic reflection
seismic source
Pacific Ocean
Formosa
Type
journal article

臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of “NTU Repository” with “Academic Hub” to form NTU Scholars.

總館學科館員 (Main Library)
醫學圖書館學科館員 (Medical Library)
社會科學院辜振甫紀念圖書館學科館員 (Social Sciences Library)

開放取用是從使用者角度提升資訊取用性的社會運動,應用在學術研究上是透過將研究著作公開供使用者自由取閱,以促進學術傳播及因應期刊訂購費用逐年攀升。同時可加速研究發展、提升研究影響力,NTU Scholars即為本校的開放取用典藏(OA Archive)平台。(點選深入了解OA)

  • 請確認所上傳的全文是原創的內容,若該文件包含部分內容的版權非匯入者所有,或由第三方贊助與合作完成,請確認該版權所有者及第三方同意提供此授權。
    Please represent that the submission is your original work, and that you have the right to grant the rights to upload.
  • 若欲上傳已出版的全文電子檔,可使用Open policy finder網站查詢,以確認出版單位之版權政策。
    Please use Open policy finder to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement.
  • 網站簡介 (Quickstart Guide)
  • 使用手冊 (Instruction Manual)
  • 線上預約服務 (Booking Service)
  • 方案一:臺灣大學計算機中心帳號登入
    (With C&INC Email Account)
  • 方案二:ORCID帳號登入 (With ORCID)
  • 方案一:定期更新ORCID者,以ID匯入 (Search for identifier (ORCID))
  • 方案二:自行建檔 (Default mode Submission)
  • 方案三:學科館員協助匯入 (Email worklist to subject librarians)

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science