Dynamics of the Japan Sea Deep Water Studied with Chemical and Radiochemical Tracers

1993 ◽  
pp. 105-119 ◽  
Author(s):  
Shizuo Tsunogai ◽  
Yutaka W. Watanabe ◽  
Koh Harada ◽  
Shuichi Watanabe ◽  
Shimei Saito ◽  
...  
Keyword(s):  
Deep Water ◽  
Japan Sea ◽  
The Japan Sea

New insights into the latitudinal ventilation variations in the Japan Sea since the Last Glacial Maximum: A radiolarian assemblage perspective

2020 ◽  
Author(s):  
Zhi Dong ◽  
Xuefa Shi ◽  
Jianjun Zou ◽  
Yanguang Liu ◽  
Ruxi Dou ◽  
...  
Keyword(s):  
Deep Water ◽  
Coastal Upwelling ◽  
Sediment Cores ◽  
Japan Sea ◽  
Volume Transport ◽  
The North ◽  
Radiolarian Assemblage ◽  
Basin Scale ◽  
Japan Sea Proper Water ◽  
The Japan Sea

<p>The formation of intermediate and deep water plays a key role in regulating climate changes at a variety of time scales through the heat redistribution and carbon cycling. The Japan Sea has unique water-mass characteristics in the North Pacific with its own deep-water formation within the Sea itself called Japan Sea Proper Water (JSPW). Latitudinal ventilation changes in the Japan Sea were reconstructed using radiolarian assemblage from three sediment cores, extending from the southwestern, central to northwestern Japan Sea. Here, we present downcore faunal records spanning the last 25 ka as well as other existing ventilation records in the Japan Sea, and provide reliable evidence to evaluate the potential controlling mechanism that lead to onset and interruption of JSPW ventilation. Taking all together, we argue that radiolarian assemblage records have revealed a distinct basin-scale transition in deep-water conditions from anoxic to oxic during the deglaciation related to changing surface hydrography. However, it should be recognized that there is significant potential for bias in the timing of the ventilation changes among regions. Deep ventilation in the central Japan Sea has been in an interglacial mode during the Bølling/Allerød presumably related to northward volume transport of the Tsushima Warm Current. Moreover, the decrease of JSPW Assemblage at the B/A in southwestern Japan Sea was attributed to higher export productivity, facilitating suboxic deepwater condition through enhanced consumption of oxygen, which was probably caused by coastal upwelling. In contrast, the weakening ventilation of the northwestern Japan Sea during the B/A and YD periods was probably caused by the blocking effect of the sea ice. Note: This study was supported by the National Natural Science Foundation of China (Grant No. 41420104005, U1606401) and National Program on Global Change and Air-Sea Interaction (GASI-GEOGE-04).</p>

Iron in the Japan Sea and its implications for the physical processes in deep water

2008 ◽  
Vol 35 (2) ◽  
Author(s):  
Hyoe Takata ◽  
Kenshi Kuma ◽  
Yutaka Isoda ◽  
Shigeyoshi Otosaka ◽  
Tomoharu Senjyu ◽  
...  
Keyword(s):  
Deep Water ◽  
Japan Sea ◽  
Physical Processes ◽  
The Japan Sea

CFC Indicating Renewal of the Japan Sea Deep Water in Winter 2000–2001

2003 ◽  
Vol 59 (5) ◽  
pp. 685-693 ◽  
Author(s):  
Shizuo Tsunogai ◽  
Kentaro Kawada ◽  
Shuichi Watanabe ◽  
Takafumi Aramaki
Keyword(s):  
Deep Water ◽  
Japan Sea ◽  
The Japan Sea

Origin of deep water in the Japan Sea over the last 145kyr

2012 ◽  
Vol 339-341 ◽  
pp. 25-38 ◽  
Author(s):  
K. Minoura ◽  
K. Akaki ◽  
N. Nemoto ◽  
S. Tsukawaki ◽  
T. Nakamura
Keyword(s):  
Deep Water ◽  
Japan Sea ◽  
The Japan Sea

Trace of the recent deep water formation in the Japan Sea Deduced from historical137Cs data

2000 ◽  
Vol 27 (22) ◽  
pp. 3731-3734 ◽  
Author(s):  
Takashi Miyao ◽  
Katsumi Hirose ◽  
Michio Aoyama ◽  
Yasuhito Igarashi
Keyword(s):  
Deep Water ◽  
Japan Sea ◽  
Deep Water Formation ◽  
The Japan Sea ◽  
Water Formation
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