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1.
Vertical profiles of chl-a and primary productivity in the middle continental shelf area and eddy area of the East China Sea
were studied using data from a cruise in the East China Sea in February to March, 1997 and a cruise in July, 1998. The results
showed that chl-a vertical distribution closely related to in situ hydrological and nutrient conditions. Chla-a concentration
ranged from 0.22 to 0.35 mg/m3 and 0.93–1.09 mg/m3 in the eddy area and in the middle continental shelf area, respectively. In both areas, chl-a concentrations in deep layers
were slightly higher than those in shallow layers, but was of the same order of magnitude. In summer, when a thermocline existed
in the water column, highest chl-a concentrations appeared at the base of the thermocline layers in both areas. In the eddy
area, chl-a concentration maximized at 31.743 mg/m3, and averaged 1.143 mg/m3 below 30 m depth. In the middle continental shelf area, the highest chl-a concentration was 2.120 mg/m3, the average was 1.168 mg/m3. The primary productivity reached 1418.76 mgC/(m2·d) in summer and 1360.69 mgC/(m2·d) in winter. In the eddy area, the primary productivity was 787.50 mgC/(m2·d) in summer and 159.04 mgC/(m2·d) in winter. Vertical carbon sinking rate from the deep layer to the bottom in both areas is also discussed in this paper.
Contribution NO. 4183 from the Institute of Oceanology, Chinese Academy of Sciences.
Project No. 49636210 supported by NSFC. 相似文献
2.
中国海监东海维权执法支队自2008年组建以来,逐步成长为我国东海区维权执法的骨干力量。随着海洋权益斗争的逐渐激烈,海监支队维权执法任务量逐年大幅增加。特别是2012年以来,东海钓鱼岛问题持续发酵,南海黄岩岛局势升温,在错综复杂的维权形势面前,支队执法人员是怎么做的呢?他们在钓鱼岛海域的持续巡航,使钓鱼岛维权形势发生根本性改变。在黄岩岛海域的执著坚守,对他国的无理行径给予了沉重打击和强烈震慑。"特别能吃苦,特别能战斗"这句话用来形容他们,是再恰当不过的了。该支队多次被国家海洋局和东海分局评为先进集体,多人次获得海洋维权标兵称号,被嘉奖、记功,获选全国海洋人物等,近日该支队又获得第八届全国"人民满意的公务员集体"的殊荣。 相似文献
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花鲈、许氏平鲉游泳能力的初步实验研究 总被引:1,自引:0,他引:1
实验利用小型海水循环水槽测定了花鲈(Lateolabrax maculatus)、许氏平(鱼由)(Sebastes schlegeli)的最大巡航(可持续)游泳速度.体长18~29cm的花鲈,其最大巡航游泳速度为41.1~127.37cm/s,如用单位时间内游过体长的倍数(BL/s)来表示,其最大巡航游泳速度范围在2.28~4.74BL/s之间.体长10~14.5cm的许氏平(鱼由),其最大巡航游泳速度为36.90~49.52cm/s或4.32~3.01BL/s. 相似文献
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茫茫东海,美丽富饶。蔚蓝的天空和无际的大海交织成一线,片片白云悠然地飘在空中,构成了一幅引人入胜的画卷。 相似文献
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伴随着我国海洋事业的不断发展,生机勃勃的中国海监迎来了她十周岁的生日。回首十年来所走过的路程,我不禁思绪万千,感触良多。中国海监队员们用他们的智慧和汗水, 相似文献
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针对有人调查船在浅水区或地形环境复杂的海域无法开展有效调查,以及无法在敏感海域开展隐蔽性调查的缺点,本文提出了利用水面及水下目标检测、自主安全避障、海洋复杂环境感知等技术,研究开发了无人水面载体系统,通过集成导航定位系统、多波束测深系统、单波束测深系统、浅地层剖面仪、侧扫声呐和ADCP系统等调查设备,构建了智能巡航综合调查平台。实际应用结果表明:该智能平台可在复杂环境和敏感海域快速、高效、安全地开展综合调查。 相似文献