热带海洋学报
熱帶海洋學報
열대해양학보
JOURNAL OF TROPICAL OCEANOGRAPHY
2001年
1期
77-81
,共5页
方文东%黄企洲%邱章%施平
方文東%黃企洲%邱章%施平
방문동%황기주%구장%시평
南海南部%异常表层水%盐度逆转%季风转换期
南海南部%異常錶層水%鹽度逆轉%季風轉換期
남해남부%이상표층수%염도역전%계풍전환기
对1985~1998年期间的海洋调查温盐深(CTD)资料进行综合分析,发现南海南部春夏季季风转换期存在盐度逆转的异常表层水。实测资料表明,该异常表层水覆盖在南海南部的中部、东部大部分地区。冬季风停止引起苏禄海高温高盐水西向侵入,成为该海区东部近表面异常高盐水的来源之一。海面强的蒸发和表层水弱的垂向混合导致近表面水具有高盐特性,近表面高盐水与其下部保持着冬季遗存的局地低盐水叠置,形成了盐度逆转现象。
對1985~1998年期間的海洋調查溫鹽深(CTD)資料進行綜閤分析,髮現南海南部春夏季季風轉換期存在鹽度逆轉的異常錶層水。實測資料錶明,該異常錶層水覆蓋在南海南部的中部、東部大部分地區。鼕季風停止引起囌祿海高溫高鹽水西嚮侵入,成為該海區東部近錶麵異常高鹽水的來源之一。海麵彊的蒸髮和錶層水弱的垂嚮混閤導緻近錶麵水具有高鹽特性,近錶麵高鹽水與其下部保持著鼕季遺存的跼地低鹽水疊置,形成瞭鹽度逆轉現象。
대1985~1998년기간적해양조사온염심(CTD)자료진행종합분석,발현남해남부춘하계계풍전환기존재염도역전적이상표층수。실측자료표명,해이상표층수복개재남해남부적중부、동부대부분지구。동계풍정지인기소록해고온고염수서향침입,성위해해구동부근표면이상고염수적래원지일。해면강적증발화표층수약적수향혼합도치근표면수구유고염특성,근표면고염수여기하부보지착동계유존적국지저염수첩치,형성료염도역전현상。
A comprehensive analysis is made on the CTD data in the southern South China Sea obtained from the oceanographic cruises during the period of 1985~1998. The results show that during the period of spring to summer transition, there existed anomalous surface water with salinity inverse in the southern South China Sea, covering most of the middle and eastern area. The pause of winter monsoon wind resulted in the intrude of high salinity and high temperature water of the Sulu Sea into the southern South China Sea, which contributed to the existence of the anomalous surface water. The strong evaporation over the sea surface and weak vertical mixing of the near surface layer caused the anomalously high salinity water near the sea surface. This near surface high salinity water, together with the low-layer winter-style fresher water, formed the salinity inverse.