东海及其邻域壳－幔结构与展布特征

莫霍面是地壳和上地幔的分界面，是个重要的密度界面，东海莫霍面的展布特征，对于研究东海深部构造具有重要意义.利用最新重力异常数据反演莫霍面深度，结合前人的莫霍面深度结果，分析东海及其邻域的壳－幔结构与展布特征.从莫霍面深度图可见东海及其邻域莫霍面起伏变化很大，深度在12～34 km之间变化，东海及其邻域地壳厚度为6～34km，东海陆架地区地壳厚度变化与大陆地区相比并不明显，显著减薄开始于冲绳海槽地区，琉球岛弧处地壳厚度明显再度增加，莫霍面呈现两凹两凸形态，认为东海及其邻域地壳自西而东从陆壳－过渡壳－洋壳逐渐过渡的.

Characteristics of crust-mantle in East China sea and adjacent regions

Characteristics of Moho is significant to deep structures in East China Sea because Moho is important density inference between Crust and Mantle.Analyze characteristics of Crust-Mantle and deep structures by calculating Moho buried depths with bouguer gravity anomaly and combing before results.Moho buried depths changes between 12 and 34 km and Crust thickness changes between 6 and 34 km and each region is different in East China Sea and adjacent regions.In Continental Shelf region,the crust thickness doesn't change obviously.The thickness of crust begins to thin evidently in Okinawa Trough and middle crust disappears there.In Ryukyu Island Arc region,the crust thickness increases again and upper crust increases most obviously.Whole Crust shows concave-convex-concave-convex configuration and we deduce it transients from continental crust-transition type crust-oceanic crust from west to east.