第四章对历年温盐和表层流资料的进行了统计分析，给出了开辟区的温盐和表层流的分布特征和年变化特征：（1）表层水温在夏季呈南高北低的特点，温盐跃层较薄，中心位置在50～120米之间变化；
In summer, the temperature of the south part of the area is higher than the north part. Both the main thermocline and the main halocline are thin and their depths range from 50 to 120m.
在过去几十年里，这些雪阻止了表层的水温升高得更多，增加了冰原的容积，并反射了太阳光。
And for the last few decades, that snow kept surface waters from warming even more, added bulk to sea ice, and reflected sunlight.
冬季湖水温度的变化是可能将滞水带到表层的，这样就会窒息整个鱼群。
Changing temperatures in the lake during the winter could have brought stagnant water to the surface, thus asphyxiating entire schools of fish.
理论蕴藏量采用了两个估算方法：一是采用实测的表层和深层的海水温度差；
One is based on the measured temperature difference between the surface and the deep water.
利用聚类和相关分析方法，研究了单位捕捞努力量渔获量与表层盐度及不同水层水温的关系。
By using methods of cluster and correlation analysis, the correlation of the catch per unit effort (CPUE) to the sea surface salinity and the seawater temperatures of different depths were studied.
结果表明，夏季高温时采用微孔管道增氧能有效降低表层、底层的温差，一定程度上降低底层水温。
Results showed that, the micropore oxygen aeration could oxygenate the water quickly and effectively, had the 5 times dissolved oxygen increase velocity than common aeration.
结果表明，夏季高温时采用微孔管道增氧能有效降低表层、底层的温差，一定程度上降低底层水温。
Results showed that, the micropore oxygen aeration could oxygenate the water quickly and effectively, had the 5 times dissolved oxygen increase velocity than common aeration.
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