南印度洋中国中山站至澳大利亚费里曼特尔断面海洋锋位置及其年际变化
Structure and variability of fronts in the South Indian Ocean along sections from Zhongshan Station to Fremantle
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摘要: 根据中国第18次南极科学考察队2002年1~3月在南印度洋从中山站外普里兹湾到澳大利亚费里曼特尔断面的走航XBT/XCTD资料和CTD资料及1998年1月、1999年2月和2000年3月等其他航次的调查资料,分析了该航线上海洋锋的位置及其年际变化:(1)在75°~78°E南极陆坡锋的位置在645°~655°S;在84°~100°E范围极地锋在535°~543°S附近;在96°~103°E亚南极锋在46°S~470°S附近;在110°E附近亚热带锋在372~380°S之间;(2)在南极极锋区存在显著等温线、等盐线的上凸和下凹,不同年份发生位置有变化;(3)在亚南极锋北侧,等温线、等盐线呈垂直排列的状态,温度、盐度垂直方向上分布均匀一致;(4)与1979,1991和1992年该区域同期的资料相比,近4a观测到的极地锋显著偏南1个纬距以上.Abstract: Structure and variability of the fronts along the sections from Zhongshan Station to Fremantle, Australia in the South Indian Ocean are analyzed with XBT/XCTD data and CTD data obtained by CHINARE in 1998, 1999, 2000 and 2002.(1) The Antarctic Slope Front at 75°~78°E is bordered between 64.5° and 65.5°S, the Polar Front at 84°~100°E varies closed to 53.5°~54.3°S, the Subtropical Front at 96°~103°E varies between 46°~47.0°S, the Subtropical Front at 110°E is located on 37.2~38.0°S; (2) in the Polar Front Zone, the isolines fluctuate strongly in temperature and salinity sections and are effected possibly by eddies; (3) north to the Subantarctic Front, the distribution of temperature salinity is homogenous in vertical direction; (4) the Polar Front retreats about one degree southward in latitude in recent four years, compared with that in 1979, 1991 and 1992 in the same area and season.
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GORDON A L, GEORGI D T, TAYLOR H W. Antarctic Polar Front Zone in the western Scotia Sea:Summer, 1975[J].J P O, 1977, 7(3):309-328. EMERY W J. Antarctic Polar Frontal Zone from Australia to the Drake Passage[J]. J P O, 1977, 7(6):811-822. 李金洪.德雷克海峡上层热结构特征与锋的演变[J]海洋学报,1993,15(1):22-30 蒲书箴,廖启煜德雷克海峡绕极流和锋面的研究[J]海洋学报,1997,19(3):1-9 BELKIN I M, GORDON A L. Southern Ocean fronts from the Greenwich Meridian to Tasmania[J]. J G R, 1996, 101:3 675-3 696. MOORE J K, ABBOTT M R, RICHMAN J G. Location and dynamics of the Antarctic Polar Front from satellite sea surface temperature data[J]. J G R, 1999, 104:3 059-3 073. ORSI A H, WHITWORTH Ⅲ T, NOWLIN JR W D. On the meridional extent and fronts of the Antarctic Circumpolar Current[J]. Deep-Sea Res, 1995, 42:641-673. BINDOFF N L, ROSENBEG M A, WARNER M J. On the circulation and water masses over the Antarctic continental slope and rise between 80° and 150°E[J]. Deep-Sea Res Ⅱ, 2000, 47:2 299-2 326. 陈明剑,侍茂崇,高郭平.近普里兹湾大陆架外水域水文物理特征[J]青岛海洋大学学报,1995,25(增刊):235-247 于洪华,苏纪兰.南极普里兹湾及其邻近海域的水文结构特征和底层水的来源[J].海洋学报,1998,20(1):11-20. 蒲书箴,董兆乾,胡筱敏,等普里兹湾陆缘水边界的变化[J]海洋通报,2000,19(6):1-9. BURLING R W. Hydorology of the circumpolar waters south of New Zealand[J]. N Z DSIR Bulletin, 1961, 143:66. GORDON A L, MOLINELLI E, BAKER T. Large-scale relative dynamic topography of the Southern Ocean[J]. J G R,1978, 83:3 023-3 032. TAYLOR H, GORDON A L, MOLINELLI E. Climate characteristics of the Antarctic polar front zone[J]. J G R, 1978,83:4 572-4 578. ORSI A H, NOWLIN JR D, WHITWORTH Ⅲ T. On the circulation and stratification of the Weddell Gyre[J]. Deep-Sea Res, 1993, 40:169-203. 侍茂崇,苗育田,于洪华,等.南印度洋110°E夏季锋区及其变化规律[J].青岛海洋大学学报,1995,25(增刊):394-405. 高郭平,刘齐,侍茂崇.印度洋南极锋线位置及下潜南极表层水的分离[J].青岛海洋大学学报,1995,25(增刊):424-431. 苗育田,于洪华,许建平斜航普里兹湾断面水温分布及温度锋特征[J].青岛海洋大学学报,1995,25(增刊):383-393. WHITWORTH Ⅲ T, NOWLIN JR W D. Water masses and currents of the Southern Ocean at the Greenwich meridian[J]. J G R, 1987, 92:6 462-6 476. PARK Y H, GAMBERONI L, CHARRIAUD E. Frontal structure, water masses, and circulation in the Crozet Basin[J].J G R, 1993, 98:12 361-12 385. PARK Y H, POLLARD R T, READ J F, et al. A quasi-synoptic view of the frontal circulation in the Crozet Basin during the Antares-4 curise[J]. Deep-Sea Res, 2002, 49:1 823-1 842. DEACON G E R. Physical and biological zonation in the Southern Ocean[J]. Deep-Sea Res, 1982, 29:1-15. STRAMMA L, PETERSON R G. The South Atlantic Ocean Current[J]. J P O, 1990, 20:846-859. STRAMMA L. The South Indian Ocean Current[J]. J P O, 1992, 22:421-430.
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