Definition of water exchange zone between the Bohai Sea and Yellow Sea and the effect of winter gale on it

SONG Jun; GUO Junru; LI Jing; MU Lin; LIU Yulong; WANG Guosong; LI Yan; LI Huan

doi:10.1007/s13131-017-0989-z

Volume 36 Issue 1

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SONG Jun, GUO Junru, LI Jing, MU Lin, LIU Yulong, WANG Guosong, LI Yan, LI Huan. Definition of water exchange zone between the Bohai Sea and Yellow Sea and the effect of winter gale on it[J]. Acta Oceanologica Sinica, 2017, 36(1): 17-25. doi: 10.1007/s13131-017-0989-z

Citation:

SONG Jun, GUO Junru, LI Jing, MU Lin, LIU Yulong, WANG Guosong, LI Yan, LI Huan. Definition of water exchange zone between the Bohai Sea and Yellow Sea and the effect of winter gale on it[J]. Acta Oceanologica Sinica, 2017, 36(1): 17-25. doi: 10.1007/s13131-017-0989-z

Citation:

SONG Jun, GUO Junru, LI Jing, MU Lin, LIU Yulong, WANG Guosong, LI Yan, LI Huan. Definition of water exchange zone between the Bohai Sea and Yellow Sea and the effect of winter gale on it[J]. Acta Oceanologica Sinica, 2017, 36(1): 17-25. doi: 10.1007/s13131-017-0989-z

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Definition of water exchange zone between the Bohai Sea and Yellow Sea and the effect of winter gale on it

doi: 10.1007/s13131-017-0989-z

SONG Jun¹,
GUO Junru^2
,,
LI Jing³,
MU Lin⁴,
LIU Yulong⁴,
WANG Guosong⁴,
LI Yan⁴,
LI Huan⁴

1.
The National Marine Data and Information Service, State Oceanic Administration, Tianjin 300171, China;The Ministry of Education Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao 266100, China
2.
National Marine Hazard Mitigation Service, State Oceanic Administration, Beijing 100194, China
3.
The National Marine Data and Information Service, State Oceanic Administration, Tianjin 300171, China;College of Marine Science, Shanghai Ocean University, Shanghai 201306, China
4.
The National Marine Data and Information Service, State Oceanic Administration, Tianjin 300171, China

Received Date: 2015-06-23
Rev Recd Date: 2016-03-07

Abstract

Abstract

The marine dynamic environment of the Bohai Sea and the Yellow Sea in the winter of 2006 is simulated by the Regional Ocean Modelling System (ROMS) marine numerical model. Using the simulated temperature and salinity, the water exchange zone between the Bohai Sea and Yellow Sea is defined through the Spectral Mixture Model (SMM). The influence of winter gales on the water exchange is also discussed. It is found that the Yellow Sea water masses in winter are distributed in a "tongue" shape in the Bohai Strait region, the water exchange zone presents a zonal distribution along the margin of the "tongue", with a tendency of running from northwest to southeast, and the water exchange is intensified at the tip of the "tongue". Besides, the coastal area in the northernmost Yellow Sea does not participate in the water exchange between the Bohai Sea and Yellow Sea. The result shows that the winter gale events play a role in enhancing the water exchange. It is specifically shown by the facts:the Yellow Sea warm current is enhanced to intrude the Bohai Sea by the gale process; the water exchange zone extends into the Bohai Sea; the water exchange belt in the southern part becomes wider; the mixture zone of river runoff with the Bohai Sea water upon its entry is enlarged and shifts northwards. Within two days after the gale process, the exchange zone retreats toward the Yellow Sea and the exchange zone resulted from the Huanghe River (Yellow River) runoff also shrinks back shoreward.
- Bohai Strait,
- winter gale,
- spectral clustering,
- Spectral Mixture Model,
- water mass analysis,
- water exchange

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References

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