Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model

Wenzheng Zhou; Fei Yu; Feng Nan

doi:10.1007/s00343-017-6141-2

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Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model

OriginalPaper | Updated：2023-05-16

- Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model
- Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model
- 海洋湖沼学报（英文） 2017年35卷第6期页码：1287-1302
- Affiliations：
  
  1. Institute of Oceanology Chinese Academy of Sciences
  2. University of Chinese Academy of Sciences
- Author bio：
- Funds：
  
  Supported by the National Natural Science Foundation of China (No. 41306020), the National Ocean Subject (No. XDA11020601), the NSFC Shandong Joint Found for Marine Science Research Centers (No. U1406401), and the NSFC Innovative Group Grant (No. 41421005)
- DOI：10.1007/s00343-017-6141-2
  中图分类号：
- 网络首发：2017-03-13，
  
  纸质出版：2017
- Accepted：
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Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model[J]. 海洋湖沼学报（英文）, 2017,35(6):1287-1302.

Zhou, W., Yu, F. & Nan, F. Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model., Chin. J. Ocean. Limnol. 35, 1287–1302 (2017). https://doi.org/10.1007/s00343-017-6141-2
Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model[J]. 海洋湖沼学报（英文）, 2017,35(6):1287-1302. DOI： 10.1007/s00343-017-6141-2.

Zhou, W., Yu, F. & Nan, F. Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model., Chin. J. Ocean. Limnol. 35, 1287–1302 (2017). https://doi.org/10.1007/s00343-017-6141-2 DOI：

摘要

Abstract

Variations in water exchange through the Kerama Gap (between Okinawa Island and Miyakojima Island) from 1979 to 2003 were estimated with the 0.08° Pacific HYbrid Coordinate Ocean Model (HYCOM). The model results show that the mean transport through the Kerama Gap (KGT) from the Pacific Ocean to the East China Sea (ECS) was 2.1 Sv

which agrees well with the observed mean KGT (2.0 Sv) for 2009–2010. Over the time period examined

the monthly KGT varied from -10.9 Sv to 15.8 Sv and had a standard deviation of ± 5.0 Sv. The water mainly enters the ECS via the subsurface layer (300–500 m) along the northeastern slope of the Kerama Gap and mainly flows out of the ECS into the southwest of the Kerama Gap. The seasonal and interannual variations of the KGT and the Kuroshio upstream transport were negatively correlated. The Kuroshio upstream transport was largest in summer and smallest in autumn while the KGT was smallest in summer (1.02 Sv) and largest in spring (2.94 Sv) and autumn (2.44 Sv). The seasonal and interannual variations in the Kuroshio downstream (across the PN-line) transport differed significantly from the Kuroshio upstream transport but corresponded well with the KGT and the sum of the transport through the Kerama Gap and the Kuroshio upstream

which indicates that information about variation in the KGT is important for determining variation in the Kuroshio transport along the PN-line.

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references

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