学术论文:Yuan, D. et al, 2018: Observed transport variations in the Maluku Channel of the Indonesian Seas associated with western boundary current changes

发布时间:2018-06-06 文章来源:中科院

Yuan, D., X. Li, Z. Wang, Y. Li, J. Wang, Y. Yang, X. Hu, S. Tan, H. Zhou, A. Wardana, D. Surinati, A. Purwandana, M. Ismail, P. Avianto, D. Dirhamsyah, Z. Arifin, and J. von Storch, 2018: Observed transport variations in the Maluku Channel of the Indonesian Seas associated with western boundary current changes. J. Phys. Oceanogr. doi:10.1175/JPO-D-17-0120.1

 

Title: Observed transport variations in the Maluku Channel of the Indonesian Seas associated with western boundary current changes 

Authors: Yuan, D., X. Li, Z. Wang, Y. Li, J. Wang, Y. Yang, X. Hu, S. Tan, H. Zhou, A. Wardana, D. Surinati, A. Purwandana, M. Ismail, P. Avianto, D. Dirhamsyah, Z. Arifin, and J. von Storch  

Journal: American Meteorological Society Journal of Physical Oceanography

Received: 31 May 2018

Abstract:

The Maluku Channel is a major opening of the eastern Indonesian seas to the western Pacific Ocean, the upper ocean currents of which have rarely been observed historically.  During December 2012 through November 2016, long time series of the upper Maluku Channel transport are measured successfully for the first time using subsurface oceanic moorings under the cooperation between the Institute of Oceanology, Chinese Academy of Sciences (IOCAS) and Research Center for Oceanography, Indonesian Institute of Sciences (RCO-LIPI).  The measurements show significant intraseasonal-to-interannual variability of over 14 Sv (1 Sv= 1×106 m3 s-1) in the upper 300 m or so with a mean transport of 1.04 -1.31 Sv northward and a significant southward interannual change of over 3.5 Sv in the spring of 2014.  Co-incident with the interannual transport change is a Mindanao Current choked at the entrance of the Indonesian seas, which is significantly different from its climatological retroflection in fall-winter.  A high-resolution numerical simulation of Max-Planck Institute of meteorology Ocean Model (MPIOM) suggests that the variations of the Maluku Channel currents are associated with the shifting of the Mindanao Current retroflection.  It is suggested that the shifting of the Mindanao Current outside the Sulawesi Sea in the spring of 2014 elevates the sea level at the entrance of the Indonesian seas, which drives the anomalous transport through the Maluku Channel.  The results suggest the importance of the western boundary current nonlinearity in driving the transport variability of the Indonesian Throughflow.

Key words: Indonesian Throughflow, western boundary current, Maluku Channel transport, nonlinear dynamics

 

 

                                                         在印度尼西亚海域马鲁古海峡观测到与西边界流变化相关的运输变化

 

摘要: 在印度尼西亚海域马鲁古海峡观测到与西边界流变化相关的运输变化

作者:袁东亮,李翔,王铮,李峣,王晶等

接收期刊American Meteorological Society Journal of Physical Oceanography

接收时间:2018年5月31日

摘要

马鲁古海峡位于印尼贯穿流(ITF)源区,是印尼贯穿流东路径的主要通道之一,但以往很少有上层海流的直接观测。自201212月开始至今,中国科学院海洋研究所与印尼科学院海洋研究中心联合进行了每年一次的联合海洋多学科综合科考,布放并维护了在马鲁古海峡的深海潜标系统,首次成功获取了长时间序列流量数据。观测表明,马鲁古海峡上300米的流量存在超过14Sv的从季节内到年际的多时间尺度的变率,其中包括2014年春天的一次超过3.5Sv流量变化的事件。相对于大变率,平均流量较小,4年平均为1.04-1.31Sv向北。与2014春季流量的变化同时发生的是棉兰老流弯曲由秋冬季的入侵状态变为阻塞状态。MPIOM高分辨率大洋环流模式的结果表明,马鲁古海峡的海流与棉兰老流弯曲的状态变化相关。研究表明,2014年春,苏拉威西海外部海平面突然升高,驱动了马鲁古海峡的异常的流量变化,暗示了西边界非线性对印尼贯穿流的影响。

 

 

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