720 () 2009,,, , ( ) (6 8 ), ( 5) ( 6).,,119 E, 150 km., 25. 5, 25,., 5b. 3 ROMS 3. 1 ROMS, S,.,,,, [ 9 ]. 1/ 32 ( ),25, 18 s, 180 s

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1 () Journal of Xiamen University (Natural Science) Vol. 48 No. 5 Sep Argos 1, 1, 1 3, 1, 2 (1.,, ; 2., ) :,Argos,( ROMS), E,.,,,,,. : E,,( ),,,, m 3 / s. : ; ; Argos ; ROMS : P :A : (2009) ,,.,,, ;,,1 000 m,,, [1 ].,1982 [ 2 ], [3 ], [4 ] ,. [1 ] POM. [5-6 ], [7 ] 1998 IO P,, : :( ) 3 edu. cn.,,,. Argos,,,. 1 Argos ( ) ( 1),38 ( 2,3). 20 (3),, E, (:41162) (12 ) ;9 (2), 4 7, ( 4),, [8 ] ;8 5,,, 4.

2 720 () 2009,,, , ( ) (6 8 ), ( 5) ( 6).,,119 E, 150 km., 25. 5, 25,., 5b. 3 ROMS 3. 1 ROMS, S,.,,,, [ 9 ]. 1/ 32 ( ),25, 18 s, 180 s, Mercator, QuikSCA T [10 ], NCEP,[ 11 ] ,7, 119 E,,

3 5 :Argos 721,118 E, 1 m/ s,, 0. 5 m/ s, N,0. 2 m/ s., [ 3 ] [1 ] POM, E,

722 () 2009,, 1 m/ s,,, 20. 5 N,118. 2 E, 2 km, 0. 3 0. 4 m/ s,. 3. 2 [12 ] 863 2007 7 13 8 5 120 E ( 7a 1) CTD,, ROMS 120 E,8. :,. 8b,,,,. 19. 5 N 21 N, 19. 8 N,,,, 0. 15 m/ s, Xu [13 ] 1994 0.

4 722 () 2009,, 1 m/ s,,, N, E, 2 km, m/ s, [12 ] E ( 7a 1) CTD,, ROMS 120 E,8. :,. 8b,,,, N 21 N, N,,,, m/ s, Xu [13 ] m/ s m/ s m,600 m N 21 N,, N 800 m 500 m E ( 7a 2) ,9, 1,4,7,10., 21 N 500 m, m/ s,1 km E,500 m. 9, ( 9d 9a) 20 N, 0. 5 m/ s,, 500 m. [14 ], [ 1 ] E E ( 500 m ) m 3 / s, ; m 3 / s, m 3 / s,,500 m, m 3 / s m 3 / s, m 3 / s,, m 3 / s, m 3 / s, m 3 / s,,,. Qu [15 ] [16 ] [14 ] ( 1),,.,,,, E a. [12 ],: cm/ s ; b.,: m/ s Fig. 8 Distribution of the zonal velocity along 120 E in L uzon Strait from J uly 13 to August 5

5 :Argos 723 9 120. 75 E a. 1 ;b. 4 ;c. 7 ;d. 10 ; : m/ s Fig. 9 Seasonal mean zonal velocity along 120. 75 E in L uzon Strait 1 120. 75 E Tab. 1 Variation of zonal volume transport along 120.

5 5 :Argos E a. 1 ;b. 4 ;c. 7 ;d. 10 ; : m/ s Fig. 9 Seasonal mean zonal velocity along E in L uzon Strait E Tab. 1 Variation of zonal volume transport along E in the L uzon Strait / (10 6 m 3 s - 1 ) [14 ] [15 ] [16 ] : 500 m. 4,, : 1),,,. 2),,,. 3) m 3 / s,,,.,,.

6 724 () 2009 : [1 ],,. [ C]/ / 13. :,2001 : [2 ]. [J ]., 1982,1 (1) :1-7. [3 ],.? [J ].,1989,8 (1) : [4 ],,. [J ].,1997,16 (2) : [5 ],,. [ C]/ / 1. :,1996 :1-12. [6 ], [J ].,1997,16 (2) :1-23. [7 ]. [ C]/ /. :,1999 : [8 ] Farris A, Wimbush M. Wind2induced kuroshio intrusion into the South China Sea [J ]. J Oceanogr,1996,52 : [9 ] Alexander F Shchepetkin, James C Mcwilliams. The regi2 onal oceanic modeling system ( ROMS) : a split2explicit, f ree2surface, topography2following coordinate oceanic model[j ]. Ocean Modeling,2005,9 (4) : [10 ] Abderrahim Bentamy. Quikscat scatterometer mean wind field products user manual[ M ]. France : Ifremer,2002. [11 ],,,. 863 [ R]. :,2007. [12 ],,. 120 E [J ].,2009,39 (1) :1-6. [13 ] Xu Jianping, Shi Maochong, Zhu Bokang,et al. Several character of water exchange in the L uzon Strait [J ]. Acta Oceanologica Sinica,2004,23 (1) : [ 14 ] Lan Jian,Bao Xianwen, Gao Guoping. Optimal estimation of zonal velocity and transport through L uzon Strait u2 sing variational data assimilation technique [ J ]. Chinese Journal of Oceanology and Limnology,2004,22 (4) : [15 ] Qu T,Mitsudera H, Yamagata T. Intrusion of the North Pacific waters into the South China Sea [ J ]. J Geophys Res,2000,105 (C3) : [16 ],,,. [J ].,2007,38 (6) : Seasonal Variation of Kuroshio at Luzon Strait Studied with Argos and Numerical Model C H EN Zhao2yun 1, ZHAN G Zhen2chang 1, J IAN G Yu2wu 1 3, WAN G Jia 1, Q IU Yun 2 (1. State Key Laboratory of Marine Environmental Science, Environmental Science Research Center, Xiamen University, Xiamen , China ; 2. Third Institute of Oceanography, State Oceanic Administration, Xiamen , China) Abstract : In order to determine whether kuroshio flows invade the South China Sea ( SCS) in the way of current loop,branch or f ront,argos data was used to study the seasonal variation of kuroshio at L uzon Strait, and the regional ocean modeling system ( ROMS) was applied to simulate the current pattern in L uzon Strait. Monthly averaged zonal velocity and zonal volume transport s at the E cross2section was listed and compared with the measured data and other result s. The result s indicate that kuroshio ex2 ists in the form of front in spring and summer,there are flows originated from the SCS afflux into the kuroshio in summer. But in fall and winter,the kuroshio flows invade the SCS in the form of a current loop,with a part of it turns back into the main current along the south of Taiwan. Especially in winter, a branch of it invades the SCS. ROMS was used to simulate the zonal velocity at the E cross2section of L uzon Strait. And the result s indicate that flows move westwards and eastwards respectively all year. The net volume transport is negative in the upper level,which means the tendency of the net transport flows into the SCS. While in the lower level the net volume transport is also negative in almost all seasons except spring. The net transport tendency is flowing f rom sea water to the SCS through L uzon Strait in each season,and the mean net volume transport is m 3 / s. Key words : L uzon Strait ; kuroshio ; Argos ; ROMS model

142 () Fig. 2 Tracks of typhoon 35 m/ s.,. NASA QuikSCA T L3 (10 m ),, km, 25 km,20, 2 m/ s (320 m/ s) 10 %(2030 m/ s)., ()

142 () Fig. 2 Tracks of typhoon 35 m/ s.,. NASA QuikSCA T L3 (10 m ),, km, 25 km,20, 2 m/ s (320 m/ s) 10 %(2030 m/ s)., () 46 1 () Vol. 46 No. 1 2007 1 Journal of Xiamen University (Nat ural Science) Jan. 2007 1,2, 1,2 3, 2, 2 (1.,2. ( ), 361005) : 19992005 QuikSCA T,.,,,. ( > 10 m/ s) ()..,. : ; ;; ;QuikSCA T : P 444 :A :043820479