热带地理
熱帶地理
열대지리
TROPICAL GEOGRAPHY
2013年
4期
400-406
,共7页
范中亚%林澍%曾凡棠%汪中洋%萧洁儿
範中亞%林澍%曾凡棠%汪中洋%蕭潔兒
범중아%림주%증범당%왕중양%소길인
珠江口门%动力过程%盐度%枯季
珠江口門%動力過程%鹽度%枯季
주강구문%동력과정%염도%고계
the estuaries of the Pearl River%hydrodynamics%salinity%dry season
2011年2月在珠江口八口门进行了同时段综合水文测验,对测验期间资料进行分析,结果表明:(1)八口门分流比从大至小依次为:磨刀门、虎门、洪奇门、蕉门、崖门、虎跳门、鸡啼门和横门;(2)外海潮波传入河口,磨刀门、鸡啼门高潮位首先出现,而虎门和蕉门最后出现,其时差约为1~2h;磨刀门属于强径流弱潮流河口,相比其他口门涨潮流速偏小,落潮流速偏大;(3)八口门潮周期盐度平均值从大至小依次为:虎门、崖门、磨刀门、虎跳门、横门、蕉门、洪奇门、鸡啼门;(4)虎门、崖门和鸡啼门盐度属于强混合型;磨刀门大潮属于强混合型,小潮处于高度层化型河口;其他4个口门属于中等强度混合类型,其特点为下层盐度大,上层盐度小,大潮时混合强一些,小潮时混合弱一些。
2011年2月在珠江口八口門進行瞭同時段綜閤水文測驗,對測驗期間資料進行分析,結果錶明:(1)八口門分流比從大至小依次為:磨刀門、虎門、洪奇門、蕉門、崖門、虎跳門、鷄啼門和橫門;(2)外海潮波傳入河口,磨刀門、鷄啼門高潮位首先齣現,而虎門和蕉門最後齣現,其時差約為1~2h;磨刀門屬于彊徑流弱潮流河口,相比其他口門漲潮流速偏小,落潮流速偏大;(3)八口門潮週期鹽度平均值從大至小依次為:虎門、崖門、磨刀門、虎跳門、橫門、蕉門、洪奇門、鷄啼門;(4)虎門、崖門和鷄啼門鹽度屬于彊混閤型;磨刀門大潮屬于彊混閤型,小潮處于高度層化型河口;其他4箇口門屬于中等彊度混閤類型,其特點為下層鹽度大,上層鹽度小,大潮時混閤彊一些,小潮時混閤弱一些。
2011년2월재주강구팔구문진행료동시단종합수문측험,대측험기간자료진행분석,결과표명:(1)팔구문분류비종대지소의차위:마도문、호문、홍기문、초문、애문、호도문、계제문화횡문;(2)외해조파전입하구,마도문、계제문고조위수선출현,이호문화초문최후출현,기시차약위1~2h;마도문속우강경류약조류하구,상비기타구문창조류속편소,락조류속편대;(3)팔구문조주기염도평균치종대지소의차위:호문、애문、마도문、호도문、횡문、초문、홍기문、계제문;(4)호문、애문화계제문염도속우강혼합형;마도문대조속우강혼합형,소조처우고도층화형하구;기타4개구문속우중등강도혼합류형,기특점위하층염도대,상층염도소,대조시혼합강일사,소조시혼합약일사。
Large scale hydrological observations in the eight estuaries of the Pearl River were simultaneously carried out in February, 2011. Analysis of the field data showed that:(1) the eight estuaries in descendant order of runoff were: Modaomen, Humen, Hongqimen, Jiaomen, Yamen, Hutiaomen, Jitimen and Hengmen; (2) during tide waves going into the estuaries, Modaomen and Jitimen reached their top water level first, Humen and Jiaomen the last, and their time difference about 1 to 2 hours; the runoff was strong and tide was weak in Modaomen; the flood velocity in Modaomen was smaller than those in other estuaries, but ebb velocity the contrary; (3) the eight estuaries in descendant order of average salinity were: Humen, Yamen, Modaomen, Hutiaomen, Hengmen, Jiaomen, Hongqimen and Jitimen;(4) Humen, Yamen and Jitimen were of strong salinity mixing type;Modaomen belonged to strong salinity mixing type during spring tide, but high-degree stratification type during neap tide. other four estuaries belonged to moderate-degree mixing type, which were characterized by high salinity at bottom layer and low at surface layer, strong mixing during spring tide and weak mixing during neap tide.