CPUE ( 1a), SST SST 1, ( 1b A, B, C,, D, N, SST ; SST A ), ; (1992), ; 3 1 ( E

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1 36 2 Vol. 36,No OCEANOLOGIA ET LIMNOLOGIA SINICA Mar., CPUE ( ) SST, GIS CPUE, , 82 %, 47 % CPUE,,, CPUE, C 3 CPUE, C 3 CPUE, ;, ;, ;, ;,,,,CPUE P731, ,, : (80 ) 30 %,,, (Daitaro Shoji,1972 ;,, 1992,1993 ; Nishida,1982 ;,2004) ; (,1995) (,1995 ;Jong et al,1987 ; Toshio Yamagata et al, (,1980 ;,1996 ; 1989 ; Bo et al,2000),1995,1997a,b) (2004),, (2000),1999, 10, 1934,, 10 (Daitaro, Shoji,1972) ,, 7 (,1992,1993 ; Nishida,1982),, 3,CX10G2D00210 ; 863, ;,,, E2mail ac. cn : , :

112 36 CPUE ( 1a), SST 1990 2001 SST 1, ( 1b 1995 2002 A, B, C,, 30 30 D, N, SST ; SST A ), 1990 2001 3 1990 ; 1990 1991 2001 (1992), ; 3 1 (125 180 E, 26 1998 2003 50 N) ;1998 2002 15 1, 15, 2.

2 CPUE ( 1a), SST SST 1, ( 1b A, B, C,, D, N, SST ; SST A ), ; (1992), ; 3 1 ( E, N) ; , 15, m 200m ( E, ) N), 2 ArcGIS, ArcGIS GIS ( 2, ), ( 1 2 ) Sqlserver 30, 2. 1, ( ),, 1 ( ) 43, SST, 71, 29 69, 30 ( ) 1 SST 15 45, 72 1 SST (a) SST (b) Fig. 1 The overlay of SST isoline and Kuroshio path in same period (a) and the overlay of SST isoline and Kuroshio path type lines(b) 2. 3 coverage SqlServer CPUE, ArcGIS, CPUE, 1), , No (51)

2 : CPUE 113 2 Fig. 2 The method for obtaining oscillation data of Kuroshio path 1 2 Tab.

3 2 : CPUE Fig. 2 The method for obtaining oscillation data of Kuroshio path 1 2 Tab. 1 The localities and corresponding numbers near Japanese and Chinese coastlines CPUE 2002) N, A B C D, 3 CPUE 15 CPUE 3 CPUE W S 2,CPUE t/ d 5 3 CPUE, , ( 1) (Daitaro Shoji,, N 1972 ;,1990 ;,1998 ( 2) /

4 Tab. 2 The parameters of normal Kuroshio path types 1) (km) (km) (km) (km) A / E, N B / E, N C / E, N D / E, ( ) N 1) 2 2 1b :A, , 413km ;B, (1991,1992), 150km ;C, , 178km ;D , 235km 3, AB ;1997 A B,BC DC B + B, B, NC , 5, A,C + ND , D, N D,NA 6, , NB NC (1991,1992) , CPUE 60 %, 40 % ( 3), , 82 %, CPUE 4, , 47 % (1991,1992), , 1995, 1996,,A, B C D C, ,, CPUE, , , 3 : , , D ND , CPUE, ,

5 2 : CPUE 115

6 116 36, 8,, CPUE, , 1 5,, , CPUE, CPUE Tab. 4 The yearly catch and CPUE of Ommastrephes bartrami from 1995 to 2002 in Northwest Pacific Ocean 1) (t) ( ) (t) CPUE ),2002,, CPUE 3. 0, CPUE ;, CPUE C C + NC, B + B NB AB ; CPUE ;, , C NC CPUE ;, (N) ; CPUE , CPUE NC C +, CPUE, CPUE 3 5, C CPUE Tab. 5 The monthly CPUE of Ommastrephes bartramifrom 1995 to 2002 in Northwest Pacific Ocean : CPUE 2. 3, NC2D2NC2N2NC2N ;1996 C2NC2N2NC2C ; CPUE 2. 2, CPUE 2. 0,

7 2 : CPUE 117 N2D2N2C ; CPUE 2. 3 ( CPUE 3, 1995, CPUE ), NC2 ( 6) 341, ND2N2NC ; CPUE, 4 120, % ; 221,, (3 ) %, C CD, CPUE, %, C 2001 ; 2002, % ; A B + C +, 2. 0 CPUE % CPUE Tab. 6 The occurrence of Kuroshio types in different 32day2interval CPUE of Ommastrephes bartrami < N A B + C AB B BC C CD D NA NB NC ND W % % % % % % 3 CPUE , No. 7 9 B,No A,,C CD ; ,, , ; , CPUE,,C CD ; , CPUE, 30, C CD, A B + ( ) :1998,No. 2 9 C +, AB B BC ; CPUE,,15, CPUE 1999,No CPUE CPUE,,15 CPUE, No CPUE ArcGIS 2000,No. 2 5 No ( 2), 15 CPUE,No CPUE 2001,No. 2, No. 1 No CPUE ( 1) 2,No. 2, CPUE D,No. 3 7 C,,No CPUE

8 ,No , 30, CPUE,8 11 CPUE 0. 5, No CPUE No No. 17 No. 18 No. 28,No No. 17,No CPUE,No. 10 No. 14 No. 18 No. 28 SPSS, 30, 1998, C, 15 CPUE,,15 CPUE ; B, r 0. 7,,15 CPUE 1998,, r 0. 3, C,15 CPUE (,1991),,,CPUE ; B 0. 5,,CPUE,,CPUE,, 0. 7 (No. 13), 15,A ( 7 2) CPUE 1999,30, 3 15 CPUE, 15 CPUE 0. 5, No No. 8 No. 9, 1999 B ,, 15 CPUE CPUE, , 8,B,CPUE, 15 CPUE 7 r 2 CPUE No. 10,Sig F, N CPUE Tab. 7 Yearly regression between the oscillation of Kuroshio path and 152day2interval CPUE of Ommastrephes bartrami r 2 Sig F N No y = x y = x y = x x y = x x y = x ,30, 6 15 CPUE 0. 5, No. 6 9 No. 16 No :No. 8 No. 29 No No. 23 No. 9 No. 6, 2000 C,,15 CPUE,15 CPUE, ,C,C B (,CPUE,,CPUE A ),CPUE,,CPUE 2001, 30, CPUE 0. 5, No. 2 No No. 16 No. 18 No. 22 No. 23 No :No. 2 No. 8 10, 2001 C B A 2002, 30, CPUE 0. 5,

9 2 : CPUE 119 No. 3 9 No. 12 No. 14 No. 16 No No. 24 No. 28 No No. 10 No. 19 No. 20 No :No. 5 No. 6 No. 14 No. 18 No. 19 No. 21 No. 28 No. 28 No. 29 No. 4 7 No. 12 3, A, 2002,C ),,15 CPUE,,15 CPUE No. 18 No. 19 No. 19, 8,30, 6 15 CPUE No. 14 No. 5 8, CPUE, 8 8 C B ( , C, 15 CPUE 8 B ),, ,30, 4 15 CPUE 0. 5, No No :No. 11 No. 12 No , 10,30, 6 15 CPUE 5 A ( 3, A ), 18 No CPUE,15 CPUE,, 0. 7, No. 15 No. 13 6,30, 3 15 CPUE 0. 5, No. 18 No. 19 No , No. 27 No. 18 No. 19, No. 13 No. 7 No. 8, 11,,CPUE ; B ( No. 27 B C ),,15 7,30, 8 15 CPUE 0. 5, No No. 19 No ,, 7 A ( 0. 5, No. 5 8 No. 13 CPUE No. 13, No. 14 9,30,No CPUE 0. 5, 0. 5, No No., No. 18 No. 19, 11,30, 5 15 CPUE 0. 7, No. 7 9 No. 12 CPUE, CPUE Tab. 8 Monthly regression between the oscillation of Kuroshio path and 152day2interval CPUE of Ommastrephes bartrami r 2 Sig F N No y = x x y = x x y = x y = x y = x y = x x y = x x y = x x

10 ,30, 8 15 CPUE 0. 88, No. 4 No. 5 No. 1 No. 13 No. 19 No. 21 No CPUE 0. 98, No. 4 No. 5 No. 13 No. 11 No. 13 N27, CPUE, A ( 3, , B C, A ),,CPUE,,,1990. ( No. 21, ). ( ). :, [ Sun X P, Wang Y P, Yuan Q 5 K, Preliminary analysis of the surface path of the (1) , Kuroshio current in the Southern Sea a area of Japan. The 82 %, 47 % Paper Collection on Kuroshio Investigation ( 1). Beijing : Ocean Press, ] 5,,, (2) CPUE,,., 22 (6) : [ Sun X P, Wang Y, P, Yuan Q K, The variation of the Kuroshio during Oceanologia et Limnologia Sinica, 22 ( 6) : (3) CPUE, ], C 3,,,1992. CPUE,. ( ). :, [ Sun X P, Wang Y P, Kaneko I K, A (4) 3 CPUE, , comparison of the seven large meanders of the Kuroshio. The Paper Collection on Kuroshio Investigation ( 4). Bei2 ; , jing : Ocean Press, ] ; ,,, ; 1. 0, ( ). :, [ Sun X P, Kaneko I K,1993. Variations of the Kuroshio (5) 1998, C, during The Paper Collection on Kuroshio In2,15 CPUE ; B,,15 CPUE 1999, B,,15 CPUE ; 2000 C,,15,1995. CPUE ;2001, C B A., 4 (3) : [ Chen X J,,15 CPUE ;2002 C,,15 CPUE (6) 5, A,,15 CPUE ; 6,,1997a. 15 CPUE ;7 A,15 CPUE ;8 267[ Chen X J, 1997a. An analysis on marine environment, C B,15 CPUE ;10, 2 15 CPUE ;11, B,,15 CPUE,, vestigation(5). Beijing : Ocean Press, ],1989., g g g g., (1) : The discussion on relationship between temperature factor and fishing ground of Ommastrephes bartrami in Northwenstern Pacific. Journal of Shanghai Fisheries Uni2 versity,4(3) : ]., 6 (4) :263 factors of fishing ground of Ommastrephes bartrami in North2 wenstern Pacific. Journal of Shanghai Fisheries University,6 (4) : ],1997b.. ;12,, 2 :11 12[ Chen XJ, How to learn fishing 15 CPUE ground of Ommastrephes bartrami in Northwenstern Pacific.

11 2 : CPUE 121 Deep Sea Fishery, 2 :11 12 ],, the Kuroshio transport East of Taiwan. Oceanologia et Lim2 :, 82 83[ Chen S J, Ma J R, Process and Analysis of Marine data Methods and Appli2 cations. Beijing : Ocean Press, ],,,2004. The bimodal character of Kuroshio. Acta Oceanologica Sini2.,23 (1) :1 9 [ Shao Q Q, Rong K, Ma W W et al, Study on spatial patterns of Ommastrephes bartrami fishing ground in the Northwest Pa2 cific Ocean. Geographical Research, 23(1) :1 9 ], Daitaro Shoji, Time Variation of the Kuroshio South of., 3 :15 18[ Shen H M, The summa2 rization on marine environment factors of fishing ground of Ommastrephes bartrami in North Pacific during Jun. Dec Deep Sea Fishery, 3 :15 18 ],1996. Nishida H, Desscription of the Kuroshio meander in., 3 : [ Gao C Y, The relationship between environment factors and fishing ground of Ommastrephes bartrami in Northwenstern Pacific and Japan Sea. Deep Sea Fishery, 3 :11 17 ],,2004. der. Journal of Physical Oceanography, 19 : ,35 (5) : [Jia Y L, Liu Q Y, Liu W et al,2004. The interannual variation of nologia Sinica, 35(5) : ],,1995..,17(1) : [Dong C M, Zhang Q H,1995. ca, 17(1) : ] Bo Qiu, Weifeng Miao,2000. Kuroshio path variations South of Japan: Bimodality as a self2sustained internal oscillation. Journal of Physical Oceanography, 30 : Japan. University of Tokyo Press, Jong2Hwan Yoon,Ichiro Yasuda,1987. Dynamics of the Kuroshio large meander : Two2layer model. Journal of Physical Oceanography, 17 : Report of Hydrographic Research,17 : Toshio Yamagata, Shin2Ichiro Umatani, Geometry2forced coherent structures as a model of the Kuroshio large mean2 RELATIONSHIP BETWEEN KUROSHIO MEANDER PATTERN AND OMMAS TREPHES BARTRAMI CPUE IN NORTHWEST PACIFIC OCEAN SHAO Quan2Qin, MA Wei2Wei, CHEN Zhuo2Qi, YOU Zhi2Min, WANG Wen2Yu ( Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, ) Abstract The data used in this paper include daily catches of Ommastrephes bartrami during 1995 to 2002 by Chinese fishing boats, SST isoline charts from 1991 to 2001 issued by Japan Fisher Information Service Center in the interval of every 3 days, the Kuroshio path charts and temperature isoline charts on 0m, 100m, 200m depths from 1998 to 2003 issued by Japan Coast Guard in 152day span. All data were processed using software ArcGIS, SPSS, and SQL Server. To overlay digital SST isoline with topology and normal Kuroshio path line, the data of Kuroshio path variation from 1990 to 2001 in 32day2span were obtained, and results were validated by comparing to the Kuroshio path charts. The Kuroshio path at 152day2interval is coincident with the 32day2interval path in the last same period. During the period of 1990 to 2001, Kuroshio bended in different scale and pattern, those noticed were : two large bendings in and , two,quasi2bendings in January to October 1997 and June 1998 to May 1999, and 5 time small bendings in May 1992, April to October 1993, May to July 1997, December 1995 to March 1996, and November to December and 1998 were the years of quasi2bending of Kuroshio occurred, corresponding to the highest CPUE val2 ue and 1999 were the years of small Krushio bending occurred, corresponding to high yearly CPUE value. In 2002, the Kuroshio path was straight, which was matched by yearly low in the CPUE. Year 2000 and 2001 were the period when large Kuroshio bending showed, the corresponding CPUE, therefore, was the lowest.

12 Between 1995 and 2001, the monthly CPUE was high during which the Kuroshio path was often in Ctyped me2 ander ( several types of Kuroshio meander were defined in the Section 2. 1). When the monthly CPUE remained high for more than three months, the corresponding Kuroshio path alternated between bending type and straight type. Between 1995 and 2001, when 32day2spanned CPUE values were , the bending was more common than straight ones, in mostly C type or CD type. When 32day2spanned CPUE was between , the Kuroshio path were generally straight type, but many were transitional ones between straight and bended. When the value were , the occurrence of straight type is higher bended type ; When 32day2spanned CPUE of Ommas2 trephes bartrami is less than 1. 0, the occurrence of straight type is much higher bended type. Based on the data in 1995 and 2001, the CPUE values in 32day interval reflected the meandering type of the Kuroshio. Generally speaking, the greater the CPUE is, the more frequent bending occurred. Specifically, between , the bending was very often ; between , bending events were slightly more than straight ones, with many transitional types ; between , straight type were more frequent than bending ones ; and between , mostly straight type. Distance data from 30 points on the Kuroshio path to baseline in 152day2interval was obtained using ArcGIS software. 302group distance data and 152day2interval CPUE of Ommastrephes bartrami was analyzed using SPASS software, based on the data analysis, the authors summarized : In 1998, there were 13 places on Kuroshio path whose offshore oscillation has high correlation with the CPUE of Ommastrephes bartrami in 152day2interval. In 1999, there were 3 places with the feature, 8 in 2000, 12 in 2001 and 17 in Monthly, in May 1998, there were 5 places on Kuroshio path whose offshore oscillation has good correlation to the CPUE at 152day2interval, similarly, 3 in June, 11 in July, 6 in August, 1 in September, 7 in October, 10 in November, and 11 in December. Key words Northwest Pacific Ocean, Ommastrephes bartrami, Kuroshio path, CPUE,, ,,, : 7 E2mail qdio. ac. cn :

2 23 [10 ] 1994 1995, Chih2Shin Chen [11 ] 1997 7 8, 20 90 GIS [12 16, ] ArcGIS, SST,, 16, 2 211 1995 2000 ( 30 30, ) ( 863, ) 1995 2000 3 1 (125gE 18

2 23 [10 ] 1994 1995, Chih2Shin Chen [11 ] 1997 7 8, 20 90 GIS [12 16, ] ArcGIS, SST,, 16, 2 211 1995 2000 ( 30 30, ) ( 863, ) 1995 2000 3 1 (125gE 18 23 1 2004 1 Vol123, No11 GEOGRAPHICAL RESEARCH Jan1, 2004,,,, (, 100101) : ArcGIS SST, : CPUE, 10 18 CPUE, 15 21 CPUE, 17 24 8, 9, 10, 11 : ; ; ; ; : P208 ; S931141 : 100020585 (2004) 0120001209 1,,, (