| 词条 | Okinawa Trough |
| 释义 |
The {{Nihongo|Okinawa Trough|沖縄トラフ|Okinawa Torafu}} (also called {{zh|中琉界沟}}, literally China-Ryukyu Border Trough[1] ) is a seabed feature of the East China Sea. It is an active, initial back-arc rifting basin which has formed behind the Ryukyu arc-trench system in the West Pacific. It developed where the Philippine Sea Plate is subducting under the Eurasia Plate.[2] DescriptionIt is a back-arc basin formed by extension within the continental lithosphere behind the far deeper Ryukyu Trench-arc system.[3] It has a large section more than {{convert|1000|m}} deep and a maximum depth of {{convert|2716|m}}. The Okinawa Trough still in an early stage of evolving from arc type to back-arc activity. Implications for the China–Japan maritime boundaryInterpretationsThe existence of the Okinawa Trough complicates descriptive issues in the East China Sea.[4] According to Professor Ji Guoxing of the Asia-Pacific Department at Shanghai Institute for International Studies,
Legal ProcedureOn August 15, 2013, China's mission did a presentation to the Commission on the Limits of the Continental Shelf[5] (CLCS) established under the United Nations Convention on the Law of the Sea (UNCLOS). The presentation was on the proposal that demarcates the limits of the outer continental shelf beyond 200 nm in part of the East China Sea.[6] China states that China's continental shelf in the East China Sea extends to China-Ryukyu Border Trough naturally, which has been over 200 nautical miles away from the mainland baseline of Chinese territorial waters. According to UNCLOS, any country claiming continental shelves beyond 200 nm shall provide relevant scientific evidence to CLCS. To collect solid data, China deployed 14 scientific survey ships, covering an area of 250,000 square kilometers.[7][8] Notes1. ^{{cite web|title=Chronology of Defending Diaoyu Islands|url=http://baodiao.lib.tsinghua.edu.cn:4237/oralhistory/chronicle.html|publisher=Tsinghua University (Beijing) Library|accessdate=3 June 2013|quote="横渡中琉界沟黑水沟，进入"琉球大洋"，乃因此沟以东属琉球海域，以西包括钓鱼台列屿乃属中国海域。"}} 2. ^Thakur, Naresh Kumar et al. (2010). {{google books|iqL67NrCQloC|Exploration of Gas Hydrates: Geophysical Techniques, p. 119.|page=119}} 3. ^Sibuet, Jean-Claude et al. "Back arc extension in the Okinawa Trough," Journal of Geophysical Research, Vol. 92, Issue B13, p. 14041-14063. 4. ^1 2 Ji, Guoxing. (1995). "Maritime Jurisdiction in the Three China Seas," p. 10. UC Berkeley: UC Institute on Global Conflict and Cooperation; retrieved 15 Nov 2010. 5. ^[https://www.un.org/depts/los/clcs_new/clcs_home.htm]{{Failed verification|date=November 2013}} 6. ^{{cite web|title=China Did a Presentation to CLCS on Demarcating Limits of Over-200-nm Outer Continental Shelf of the East China Sea|author=State Oceanic Administration|location=Beijing, China|date=August 16, 2013|language=Chinese}}{{Full citation needed|date=November 2013}} 7. ^{{cite web|title=Legally and Scientifically Sound--Discussions about China's Proposal on Demarcating Outer Continental Shelf in the East China Sea|author=State Oceanic Administration|location=Beijing, China|date=August 16, 2013|language=Chinese}}{{Full citation needed|date=November 2013}} 8. ^{{cite news|language=Chinese|author=Xinjing Bao|title=Experts Discusses China’s Proposal|url=http://www.chinanews.com/gn/2013/08-17/5173552.shtml|date=August 16, 2013|accessdate=August 16, 2013}}{{Failed verification|date=November 2013}} References
4 : Geology of China|Geology of Japan|Plate tectonics|Back-arc basins |
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