基于多数据集的菲律宾海深层环流研究  

Deep-Layer Circulation in the Philippine Sea Based on Multiple Datasets

作　　者：王廷浩 周春[1,2,3] 成佳俊 彭贤涛 Wang Tinghao;Zhou Chun;Cheng Jiajun;Peng Xiantao(Frontier Science Center for Deep Ocean Multispheres and Earth System,the Key Laboratory of Physical Oceanography,Ministry of Education,Ocean University of China,Qingdao 266100,China;Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China;Sanya Oceanographic Institution,Ocean University of China,Sanya 572025,China)

机构地区：[1]中国海洋大学深海多圈层与地球系统前沿科学中心,物理海洋教育部重点实验室,山东青岛266100 [2]青岛海洋科学与技术试点国家实验室,山东青岛266237 [3]中国海洋大学三亚海洋研究院,海南三亚572025

出　　处：《中国海洋大学学报（自然科学版）》2023年第5期32-46,共15页Periodical of Ocean University of China

基　　金：海南省科技计划三亚崖州湾科技城联合项目(120LH059);国家自然科学基金项目(42076027)资助。

摘　　要：本文使用多套再分数据、气候态数据和模式模拟结果对菲律宾海深层环流进行了研究,同时结合断面观测数据评估了这些数据集对于菲律宾海深层水团与环流分析的适用性。结果显示,气候态数据的温盐结构与断面观测结果较为一致,较适于用来进行菲律宾海深层水团气候态特征的研究。多个非气候态资料的数据集中混合坐标模型(Hybrid coordinate ocean model GLBa0.08)数据中的温盐结构与观测相对较为接近,也可用于开展菲律宾海深层水团研究。海洋与气候环流模型(Estimating the circulation and climate of the ocean Version 2)数据与菲律宾海深层环流的观测研究吻合相对较好。通过对比分析多个数据集,结合前人研究成果,显示在菲律宾海的2 000~4 000 m层,深层水会从雅浦-马里亚纳深水通道(Yap-Mariana junction, YMJ)处入侵到菲律宾海深层,并跨过九州-帕拉海脊(Kyushu-Palau Ridge, KPR),在菲律宾海盆(Philippine Basin, PB)的南部和北部形成气旋式环流;深层水还会通过伊豆-小笠原海脊上豁口进入四国海盆(Shikoku Basin, SHB),在SHB内形成反气旋环流,并一直延伸到海底;还有一部分会进入PB在琉球海沟处形成南向西边界流,并分出一支流动跨过吕宋海峡进入南海。在4 000 m以深的菲律宾海,深层水通过YMJ入侵到菲律宾海,并跨过KPR,在PB的南部和北部形成两个气旋式环流。本文对比分析结果及对多数据集的评估可为开展菲律宾海深层环流时空特征的研究和模拟的优化提供一定的参考。This paper investigates the deep circulation in the Philippine Sea,with model data,reanalysis data and climatological data,and the applicability of these data sets to the description of the deep circulation and water mass in the Philippine Sea is evaluated in combination with sectional observations.The thermohaline structure of the climate state data is consistent with the observation results and can be used to study the climatic state characteristics of deep water masses in the Philippine Sea.In other data set,the thermohaline structure of the Hybrid Coordinate Ocean Model GLBa0.08 data is relatively close to the observation.It can also be used as a reference to study the deep water masses in the Philippine Sea.The Estimating the Circulation and Climate of the Ocean Version 2 is in good agreement with the observations of the deep Circulation in the Philippine Sea.In the 2000~4000 m layer of the Philippine Sea,the deep water will intrude from the Yap-Mariana Junction(YMJ)to the deep layer of the Philippine Sea.Then it will cross the Kyushu-Para Ridge(KPR)to form a cyclonic circulation in the southern and northern parts of the Philippine Basin(PB).The deep water will also enter the Shikoku Basin(SHB)through the gap on the Izu-Ogasawara Ridge,forming an anticyclonic circulation in the SHB,and extending to the bottom of the sea.A part of it will enter the PB to form southward western boundary current at the Ryukyu Trench,and branched into the South China Sea across the Luzon Strait.In the Philippine Sea deeper than 4000 m,deep water intrudes into the Philippine Sea through the YMJ.Then it crosses the KPR,forming two cyclonic circulations in the south and north of the PB.The results of the comparative analysis and the evaluation of multiple data sets in this paper can provide some references for the study of the temporal and spatial characteristics of the deep circulation in the Philippine Sea and the optimization of the simulation.

关 键 词：菲律宾海 深层环流 北太平洋深层水 上层绕极深层水 下层绕极深层水 

分 类 号：P721[天文地球—海洋科学]