發(fā)布時間：2018-01-09 08:21

  本文關(guān)鍵詞：西太平洋雅浦海溝區(qū)海底熱流原位測量　出處：《海洋地質(zhì)與第四紀地質(zhì)》2016年04期 　論文類型：期刊論文

  更多相關(guān)文章： 雅浦海溝 熱流探針 熱流值 西太平洋

【摘要】：為了解西太平洋雅浦海溝區(qū)俯沖帶及島弧兩側(cè)的海底熱流分布情況,2015年1—3月期間的西太平洋海山航次中,"科學"號利用最新一代Lister型熱流探針對該區(qū)域開展了海底熱流原位測量工作。沿著橫跨俯沖帶的站位測線,本次進行了10個熱流站位測量,共獲得8個站位的有效數(shù)據(jù)。測量結(jié)果表明,該地區(qū)地溫梯度的變化范圍為0.011~0.137Km-1,平均0.089Km-1,熱導率的變化范圍為0.58~1.32 Wm-1 K-1,熱流值則在14.4~118.85mWm-2之間,平均為68.02mWm-2。熱流值分布顯示,雅浦島弧附近具有較高的熱流值,自雅浦島弧向兩側(cè)熱流值逐漸降低,低熱流區(qū)主要分布在帕里西維拉海盆。由于該地區(qū)熱流測量數(shù)據(jù)依然稀缺,深入的討論有待進一步研究。
[Abstract]:In order to understand the distribution of undersea heat flow along the subduction zone and the two sides of the island arc in the Yapu trench area of the western Pacific Ocean, the seamount voyage in the western Pacific Ocean during the period from January to March in 2015 was carried out. Using the latest generation of Lister heat flux probe, Science has carried out in situ measurement of submarine heat flux in this area. Along the line of station position measurement across the subduction zone, 10 heat flow station measurements have been carried out this time. The effective data of 8 stations were obtained. The results show that the variation range of geothermal gradient in this area is 0.011 ~ 0.137 km ~ (-1), with an average of 0.089 Km ~ (-1). The variation range of thermal conductivity is 0.58 ~ 1.32 Wm-1 / K ~ (-1), and the heat flux is between 14.4C and 118.85mW ~ (-2). The average heat flux is 68.02mWm-2.The heat flux distribution shows that there is a higher heat flux near the Yapu island arc, and the heat flux decreases gradually from the Yapu island arc to the two sides. The low heat flux region is mainly distributed in the Palisevera basin. Since the heat flux measurement data in this area are still scarce, further discussion is needed.
【作者單位】： 中國科學院海洋研究所海洋地質(zhì)與環(huán)境重點實驗室;
【基金】：中國科學院戰(zhàn)略性先導科技專項(Y3A311101T) 國家自然科學青年基金(41406061)項目
【分類號】：P736
【正文快照】： 海底熱流測量是研究海底構(gòu)造活動的一種重要的地球物理方法,獲得的熱流值是研究大洋地殼和上地幔巖石圈熱狀態(tài)的重要指標[1]。早期由于受探測設(shè)備的限制,熱流數(shù)據(jù)來源主要是通過大洋鉆探[2-3]和陸架區(qū)的油氣鉆井[4-5]獲得。隨著熱流探測技術(shù)進步,人們開始使用探針式熱流計直接，

本文編號：1400678