本文關(guān)鍵詞： 三沙灣 溫度 鹽度 季節(jié)變化　出處：《廈門大學(xué)學(xué)報(自然科學(xué)版)》2016年03期 　論文類型：期刊論文

【摘要】：利用2012年8月和2013年1月在三沙灣開展的2個航次調(diào)查所獲得的溫度、鹽度資料,分析三沙灣夏季和冬季溫度、鹽度的水平和垂直分布特征.結(jié)果表明:三沙灣夏、冬季節(jié)在灣口均為低溫高鹽水、灣頂為高溫低鹽水,這主要是受陸地徑流的影響導(dǎo)致的;但是灣頂與灣口的溫、鹽差異在冬季相比夏季要小很多,溫度差在冬季變小主要是受太陽輻射的季節(jié)差異導(dǎo)致的,而鹽度差變小則是由于浙閩沿岸水在冬季向南轉(zhuǎn)向經(jīng)潮流進(jìn)入三沙灣導(dǎo)致的;溫、鹽的垂直分布圖表明三沙灣冬季海水混合相對均勻,混合層深度比夏季要深,這與季風(fēng)強(qiáng)度的季節(jié)差異有關(guān).
[Abstract]:Based on the temperature and salinity data of two voyages conducted in Sansha Bay in August 2012 and January 2013, the summer and winter temperatures in Sansha Bay were analyzed. The horizontal and vertical distribution characteristics of salinity. The results show that in summer and winter season, Sansha Bay is low temperature and high salt water in the mouth of the bay, and the top of the bay is high temperature and low salt water, which is mainly caused by land runoff. However, the difference of temperature and salt between the top of the bay and the mouth of the bay is much smaller in winter than in summer, and the temperature difference in winter is mainly caused by the seasonal difference of solar radiation. However, the difference in salinity is caused by the trend of the coastal water from Zhejiang and Fujian to the south in winter into Sansha Bay. The vertical distribution of temperature and salt shows that the mixing of sea water in Sansha Bay in winter is relatively uniform, and the depth of mixing layer is deeper than that in summer, which is related to the seasonal variation of monsoon intensity.
【作者單位】： 近海海洋環(huán)境科學(xué)國家重點實驗室(廈門大學(xué));廈門大學(xué)環(huán)境與生態(tài)學(xué)院;
【基金】：國家海洋局公益項目(201205009-2)
【分類號】：P731
【正文快照】： 三沙灣位于福建省東北部沿海,是寧德市境內(nèi)的一個封閉型海灣,主要由官井洋、東吾洋、三都澳、鹽田港等次級海灣組成(圖1).三沙灣內(nèi)水域開闊,海灣總面積(扣除島嶼)約675km2,但其僅在海灣東南部有一峽口(即東沖口)與外海相連,且口門寬僅約3km,因此歷來是避風(fēng)良港[1-2].近年來由

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