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Titolo:
Does the Yellow Sea Warm Current really exist as a persistent mean flow?
Autore:
Lie, HJ; Cho, CH; Lee, JH; Lee, S; Tang, YX; Zou, EM;
Indirizzi:
Korea Ocean Res & Dev Inst, Natl Res Lab Ocean Predict Yellow & E China Seas, Ansan 425744, South Korea Korea Ocean Res & Dev Inst Ansan South Korea 425744 425744, South Korea State Ocean Adm, Inst Oceanog 1, Phys Oceanog Div, Qingdao 266003, PeoplesR China State Ocean Adm Qingdao Peoples R China 266003 ao 266003, PeoplesR China
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
fascicolo: C10, volume: 106, anno: 2001,
pagine: 22199 - 22210
SICI:
0148-0227(20011015)106:C10<22199:DTYSWC>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
EAST CHINA SEAS; KUROSHIO; WINTER; WATER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Lie, HJ Korea Ocean Res & Dev Inst, Natl Res Lab Ocean Predict Yellow & E China Seas, POB 29, Ansan 425744, South Korea Korea Ocean Res & Dev Inst POB 29 Ansan South Korea 425744 Korea
Citazione:
H.J. Lie et al., "Does the Yellow Sea Warm Current really exist as a persistent mean flow?", J GEO RES-O, 106(C10), 2001, pp. 22199-22210

Abstract

Does saline water of Kuroshio origin intrude into the Yellow Sea interior by a persistent mean current through the Yellow Sea Warm Current or by an intermittently generated wind-driven current? This very fundamental questionis discussed by analyzing comprehensive conductivity-temperature-depth data collected over the entire southern Yellow Sea basin and by analyzing satellite-tracked drifter trajectories collected in 1996 and 1997. In the southwestern Yellow Sea, relatively saline water (33.0-34.0 psu) persists year-round, implying a northwestward intrusion of Cheju Warm Current, water (CWCW). This water is a mixture of saline CWCW, with salinity higher than 34.0 psu, and fresh Yellow Sea waters, with salinity < 33.0 psu. During the, winter monsoon the mixed water distribution is tongue-shaped, apparently intruding from the CWCW area. At the same time a strong thermohaline front with ahorizontal form similar to the Greek letter Gamma forms across the southern entrance of the central Yellow Sea trough and separates the mixed water area from the CWCW. During the summer monsoon the CWCW intrusion is weak, and the mixed water that intruded in the previous winter monsoon remains inside the trough as its salinity decreases. In winter, occasional collapses ofpart of the front on the western side of the trough are observed, presumably in response to an imbalance between northwest currents generated by strong northerly wind bursts and southeast, tide-induced residual currents. Saline water in the frontal zone may then flush into the southwestern Yellow Sea through the collapsed area of the front. We conclude that the YSWC is not a persistent mean current. We also conclude that CWCW may be transported to the southwestern Yellow Sea in winter by the intermittently generated northwest currents on the western slope of the trough, which override the tide-induced residual currents that flow to the southeast in this part of the basin.

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Documento generato il 02/10/20 alle ore 01:46:45