Currents in the Luzon Strait obtained from moored ADCP observations and a diagnostic calculation of circulation in spring 2008

摘要: Abstract Based on current measurements at two mooring stations M2 from 25 April to 12 June, 2008 and M1 24 11 CTD wind data obtained in the Luzon Strait (LS), a three-dimensional diagnostic model with modified inverse method was used study regional circulation 23 26, (a La Nina year). The main results aid of computation, T-S curve analysis satellite geostrophic currents revealed following: (1) Part Kuroshio flowed northwestward through upper layer above 400 m LS, respectively. (2) In intrusion longitudinal section 120°53′E most continued flow across 120°30′E. (3) northeastern region 1200 m mainly dominated by southeastward current, which came northern boundary 21°17′N, instead Kuroshio. Finally, eastward LS into Pacific 1200 m. (4) southern northward South China Sea water 20°00′N 20°10′N, then it turned cyclonically westward part (5) comparison observed currents, speeds modeled 150, 200, 300 computed point (120°30.54′E, 21°2′N) were 35.75, 25.50, 15.27 12.67 cm/s, respectively; mean value four levels 22.30 cm/s, while values station (120°30.332′E, 20°59.961′N) 33.08, 27.64, 13.18 11.67 cm/s, 21.39 cm/s. This signifies that overestimated 4.3%. (6) After observations, adjusted net volume transports (VT) 4.66 2.66 × 10 6  m 3  s −1 , respectively, entire depth 500 m during spring 2008. indicates VT much less than 1992 (an El Nino year) normal years. That is say, intruding LT may be closely related (or Nina) phenomenon, being higher lower Nina, also mesoscale variability LS.