CAJ | 학술논문

基于2012年10月和12月两次南海北部走航ADCP和站位CTD等资料,分析了南海北部海流的流速结构和温盐特征。通过校正ADCP失准角,将ADCP流速测量精度控制在5 cm/s,并得到两个航次7个断面的流速数据。走航ADCP成功地观测到了南海西边界流和南海暖流,其中西边界流流幅和厚度分别为120 km和200 m,顺风流向西南,最大流速和流量范围分别为30~67 cm/s和0.74~9.70 Sv(1 Sv=106 m3/s)；而暖流流幅和厚度分别为40 km和600 m,呈带状结构,逆风流向东北,最大流速和流量范围分别为12~18 cm/s和0.14~1.13 Sv。对海南岛东部同一断面不同时间的两次观测表明,海流的流速结构发生了一定的变化,10月观测时西边界流和暖流分别位于陆架附近的表层和陆坡附近200 m以深的次表层,而12月观测时暖流出现在陆架附近表层到800 m以深的全深度范围,西边界流则分布于暖流南北两侧。在海南岛南部17.1°N、109.9°E 附近观测到有暖流通过,此暖流的位置是迄今为止所有报道中的最西侧。
기우2012년10월화12월량차남해북부주항ADCP화참위CTD등자료,분석료남해북부해류적류속결구화온염특정。통과교정ADCP실준각,장ADCP류속측량정도공제재5 cm/s,병득도량개항차7개단면적류속수거。주항ADCP성공지관측도료남해서변계류화남해난류,기중서변계류류폭화후도분별위120 km화200 m,순풍류향서남,최대류속화류량범위분별위30~67 cm/s화0.74~9.70 Sv(1 Sv=106 m3/s)；이난류류폭화후도분별위40 km화600 m,정대상결구,역풍류향동북,최대류속화류량범위분별위12~18 cm/s화0.14~1.13 Sv。대해남도동부동일단면불동시간적량차관측표명,해류적류속결구발생료일정적변화,10월관측시서변계류화난류분별위우륙가부근적표층화륙파부근200 m이심적차표층,이12월관측시난류출현재륙가부근표층도800 m이심적전심도범위,서변계류칙분포우난류남북량측。재해남도남부17.1°N、109.9°E 부근관측도유난류통과,차난류적위치시흘금위지소유보도중적최서측。
The characteristics of current velocity and structures of temperature and salinity were evaluated by the shipboard ADCP (Acoustic Doppler Current Profiler) and CTD (Conductivity Temperature Depth) data collected during two cruises in the northern South China Sea (SCS) in October and December of 2012. The accuracy of ship-board ADCP velocity was controlled within 5 cm/s by the corrected misalignment angle, and current velocity data of were obtained at seven sections from the two cruises. The SCS western boundary current and warm current were successfully observed by the shipboard ADCP survey. The SCS western boundary current was flowing southwestward downwind with a width of 120 km and a vertical range of 200 m with the maximum velocity from 30 cm/s to 67 cm/s and from 0. 74 Sv to 9. 70 Sv (1 Sv=106 m3/s). The warm current, however, was flowing northeastward up-wind with a horizontal and vertical ranges of 40 km and 600 m, with the maximum velocity of 12-18 cm/s and 0. 14-1. 13 Sv. The two cruises revealed that there were some changes in the velocity structure in the same section of east Hainan Island. In October, the western boundary current and warm current were located in the surface layer near the shelf and below 200 m near the slope, while the western current was divided into northern and southern branches by the warm current which located in depth from surface to 800 m depth. Moreover, the warm current was found in south of Hainan Island near 17. 1°N,109. 9°E, and is until now the most westwards.