Observation of bottom water renewal and export production in the japan basin, east sea using tritium and helium isotopes

2008 ◽  
Vol 43 (1) ◽  
pp. 39-48 ◽  
Author(s):  
Doshik Hahm ◽  
Kyung-Ryul Kim
Keyword(s):  
Bottom Water ◽  
East Sea ◽  
Helium Isotopes ◽  
Japan Basin ◽  
Water Renewal ◽  
Export Production

Spatial Distribution of Radiocarbon in the Southwestern Japan/East Sea Immediately After Bottom Water Renewal

Radiocarbon ◽  
2013 ◽  
Vol 55 (3) ◽  
pp. 1675-1682 ◽  
Author(s):  
Takafumi Aramaki ◽  
Shinichi S Tanaka ◽  
Seiko Kushibashi ◽  
Young-Il Kim ◽  
Chang-Jun Kim ◽  
...  
Keyword(s):  
Bottom Water ◽  
East Sea ◽  
Ulleung Basin ◽  
Depth Interval ◽  
Time Interval ◽  
Vertical Profiles ◽  
Maximum Difference ◽  
Japan Basin ◽  
Water Renewal ◽  
Yamato Basin

In April 2001, immediately after bottom water renewal in the Japan/East Sea, 7 vertical profiles of radiocarbon were obtained from the area, including the Japan Basin and the Tsushima/Ulleung Basin. The bottom water Δ14C of the Tsushima/Ulleung Basin increased by 24% during 1979–2001 and was 10–15% higher than the values reported for the Japan Basin and Yamato Basin during 1995–2002. Within the depth interval 800–2000 m, Δ14C values at the southernmost station in the Japan Basin were much higher than at other stations, with the maximum difference in Δ14C values being more than 50%. Based on a combination of physical observations with analysis of the Δ14C data, we concluded that the bottom water, which was formed by the sinking of surface water off Vladivostok, Russia, in late January-early February of 2001, had been widely distributed to depths below 2000 m within the southernmost Japan Basin in a timespan shorter than 2 months. However, there was no evidence that the water had been transported into the Tsushima/Ulleung Basin during the same time interval.

Optical-thermal fronts under ice cover of Lake Baikal and their connection with the bottom water renewal

2009 ◽  
Vol 22 (2) ◽  
pp. 227-233 ◽  
Author(s):  
P. P. Sherstyankin ◽  
G. P. Kokhanenko ◽  
V. G. Ivanov ◽  
L. N. Kuimova
Keyword(s):  
Lake Baikal ◽  
Bottom Water ◽  
Ice Cover ◽  
Water Renewal

scholarly journals Coastal Freshening Prevents Fjord Bottom Water Renewal in Northeast Greenland: A Mooring Study From 2003 to 2015

2018 ◽  
Vol 45 (6) ◽  
pp. 2726-2733 ◽  
Author(s):  
Wieter Boone ◽  
Søren Rysgaard ◽  
Daniel F. Carlson ◽  
Lorenz Meire ◽  
Sergei Kirillov ◽  
...  
Keyword(s):  
Bottom Water ◽  
Water Renewal

Geochemical and diatom signatures of bottom water renewal events in Effingham Inlet, British Columbia (Canada)

2009 ◽  
Vol 262 (1-4) ◽  
pp. 50-61 ◽  
Author(s):  
Murray B. Hay ◽  
Stephen E. Calvert ◽  
Reinhard Pienitz ◽  
Audrey Dallimore ◽  
Richard E. Thomson ◽  
...  
Keyword(s):  
British Columbia ◽  
Bottom Water ◽  
Water Renewal ◽  
Renewal Events ◽  
Effingham Inlet

scholarly journals Decadal Changes in Meridional Overturning Circulation in the East Sea (Sea of Japan)

2020 ◽  
Vol 50 (6) ◽  
pp. 1773-1791 ◽  
Author(s):  
MyeongHee Han ◽  
Yang-Ki Cho ◽  
Hyoun-Woo Kang ◽  
SungHyun Nam
Keyword(s):  
Sea Of Japan ◽  
Bottom Water ◽  
Meridional Overturning Circulation ◽  
East Sea ◽  
Intermediate Water ◽  
Decadal Change ◽  
Marginal Seas ◽  
Water Formation ◽  
Meridional Overturning ◽  
Bottom Water Formation

AbstractMeridional overturning circulation (MOC) is vital to distributing heat, freshwater, and dissolved matter in semienclosed deep marginal seas such as the East Sea (ES) (Sea of Japan). As our understanding of the ES MOC remains incomplete, we attempted to fill this research gap. We analyzed the ES MOC and its decadal change (1993–2012), employing Hybrid Coordinate Ocean Model (HYCOM) global reanalysis. We found that the ES MOC, consisting of two counterrotating overturning cells in the late 1990s, changed into a single full-depth cell in the 2000s and reverted to two cells in the 2010s. The decadal change relates to weakening of the southward western boundary current at the intermediate layer and northward eastern boundary currents at the deep abyssal layer. We propose that surface warming and salinification favored reduced intermediate water formation and enhanced bottom water formation in the northwestern ES in the 2000s and were, therefore, key to the decadal change. Conditions unfavorable to intermediate water formation and favorable to bottom water formation in the winters of the 2000s, compared with the late 1990s, enhanced northward (westward) Ekman transport in the southern (northeastern) ES, successive advection of surface warm, saline water into water formation areas, and air–sea heat and freshwater exchanges linked to the January Arctic Oscillation. Our results indicated that the ES MOC is sensitive to both external atmospheric forcing and internal ES processes, which have implications for significant changes in the response of other marginal seas and global oceans to future climate variability.

scholarly journals Lagrangian analysis of the vertical structure of eddies simulated in the Japan Basin of the Japan/East Sea

2015 ◽  
Vol 86 ◽  
pp. 128-140 ◽  
Author(s):  
S.V. Prants ◽  
V.I. Ponomarev ◽  
M.V. Budyansky ◽  
M.Yu. Uleysky ◽  
P.A. Fayman
Keyword(s):  
Vertical Structure ◽  
East Sea ◽  
Lagrangian Analysis ◽  
Japan Basin

scholarly journals Re-initiation of bottom water formation in the East Sea (Japan Sea) in a warming world

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Seung-Tae Yoon ◽  
Kyung-Il Chang ◽  
SungHyun Nam ◽  
TaeKeun Rho ◽  
Dong-Jin Kang ◽  
...  
Keyword(s):  
Bottom Water ◽  
Japan Sea ◽  
East Sea ◽  
Water Formation ◽  
Warming World ◽  
Bottom Water Formation
Sign in / Sign up

Export Citation Format

Share Document