海洋科学
海洋科學
해양과학
MARINE SCIENCES
2014年
7期
76-81
,共6页
杨万康%袁笛%张俊彪%许雪峰%施伟勇
楊萬康%袁笛%張俊彪%許雪峰%施偉勇
양만강%원적%장준표%허설봉%시위용
大小门岛%潮流%余流
大小門島%潮流%餘流
대소문도%조류%여류
Da-men and Xiao-men islands%tide current%residual current
利用2012年4月份进行水文调查得到的实测海流数据,依据多周日观测的准调和分析原理,对大小门岛海域表层潮流进行调和分析。基于调和分析结果对大小门岛海域潮流和余流特征进行精细化研究。结果表明:大小门岛海域潮流类型为不正规半日浅海潮流,大小门岛西部海域受浅水分潮影响最大。整个海域潮流运动形式以往复流为主,由于受到多股往复流的干涉作用,大门岛西侧旋转流较强;实测落潮流要强于涨潮流,流速在瓯江口外侧达到最大。余流走向存在区域性差异,小门岛西北、瓯江口内部及黄大峡海域余流方向与涨潮流一致,其它区域与落潮流一致,余流流速大小与最大流速分布基本一致。
利用2012年4月份進行水文調查得到的實測海流數據,依據多週日觀測的準調和分析原理,對大小門島海域錶層潮流進行調和分析。基于調和分析結果對大小門島海域潮流和餘流特徵進行精細化研究。結果錶明:大小門島海域潮流類型為不正規半日淺海潮流,大小門島西部海域受淺水分潮影響最大。整箇海域潮流運動形式以往複流為主,由于受到多股往複流的榦涉作用,大門島西側鏇轉流較彊;實測落潮流要彊于漲潮流,流速在甌江口外側達到最大。餘流走嚮存在區域性差異,小門島西北、甌江口內部及黃大峽海域餘流方嚮與漲潮流一緻,其它區域與落潮流一緻,餘流流速大小與最大流速分佈基本一緻。
이용2012년4월빈진행수문조사득도적실측해류수거,의거다주일관측적준조화분석원리,대대소문도해역표층조류진행조화분석。기우조화분석결과대대소문도해역조류화여류특정진행정세화연구。결과표명:대소문도해역조류류형위불정규반일천해조류,대소문도서부해역수천수분조영향최대。정개해역조류운동형식이왕복류위주,유우수도다고왕복류적간섭작용,대문도서측선전류교강;실측락조류요강우창조류,류속재구강구외측체도최대。여류주향존재구역성차이,소문도서북、구강구내부급황대협해역여류방향여창조류일치,기타구역여락조류일치,여류류속대소여최대류속분포기본일치。
Based on the field data obtained from the investigation of Da-men-Xiao-men islands in April 2012, we characterized the tidal and residual currents according to the principle of quasi-harmonic. The harmonic analysis results agreed well with the measured results. The results showed the currents around Da-men and Xiao-men islands area was dominated by irregular semi-diurnal shallow currents. The proportion reached most at the west of Da-men and Xiao-men islands because of shoal topography. The Da-men and Xiao-men islands were dominated by rectilinear currents, but at the west of Da-men island, it was characterized by strong rotary current due to muti-tide interference effect. The measured data showed that ebb currents were stronger than flood currents. The currents got greatest outside the Oujiang estuary. The residual direction showed regional differences. The residual direction inside the Oujing, near northwest of Xiao-men island and Huang-Da channel was consistent with the flood tide, and other areas were consistent with ebb current. The residual magnitude distribution was similar to maximum speed distribution.