咸潮入侵对上海市水质影响研究

本市地表水资源593.5亿立方米,其中长江径流量占80％故长江径流量是发展上海经济和对外开放的主要限制因素,但近年来长江径流量逐年减少,导致咸潮入侵增强,给国民经济建设和人民身体健康带来威胁。本文分析长江口区咸潮入侵途径和咸潮入侵的变化规律,进而探讨咸潮入侵对上海水资源产生的可能影响,最后提出减轻减潮入侵,改善水质的设想。     

Internal tide characteristics over northern South China Sea continental slope

21-day in-situ ADCP current and CTD data from an anchored observational station by R/V Shiyan 3 are used to investigate the characteristics of intemal tide in the northern South China Sea continental slope. The results show that tide and internal tide are both mixed type in the observed region and dominated by diurnals; the maximum internal tidal major axes of K1, O1 were largest and reached 11 cm/s, 10 cm/s, respectively, and their current vectors rotate anticlockwise. The 300 m-deep internal tide presents obvious quasi-diurnal oscillation and its average amplitude reaches 50 m. Furthermore, internal tide carried high energy; in the upper layers above 140 m, the kinetic energy of intemal tides accounts for 15%--37% of overall kinetic energy, most of internal tide energy concentrates around the thermocline.     

两种球形棕囊藻细胞总RNA提取方法的比较

不同植物细胞RNA提取的适宜方法各不相同.本实验分析、比较了QIAGEN试剂盒法和西曲溴铵(CTAB)法用于赤潮藻细胞总RNA提取的情况.结果显示,两种方法均可获得高质量的总RNA.比较而言,CTAB法比QIAGEN试剂盒更可取,适合藻细胞RNA的大量提取.     

广西主要海洋灾害风险分析

收集1949~2010年发生在广西沿海地区的主要海洋灾害情况,并对其进行风险影响分析。在影响广西沿海地区的主要海洋灾害中,风暴潮灾害最严重,造成的损失最大,直接危及到国家财产、沿海人民生命生活安全以及社会经济的可持续发展;其次是赤潮灾害和海水入侵灾害。气候变化与人类活动是引发这些灾害的主要影响因素。气候变化影响下的海平面上升使风暴潮的致灾程度加剧,海岸侵蚀、岸线变迁、海水入侵和土地盐渍化加重;人类大规模的围填海活动使潮滩湿地消失、生物多样性减少、赤潮危害加重、生态环境资源遭到破坏,加重灾害的危害程度。应采取工程与生态相结合的立体防护体系,提高海岸自然抗灾能力,将灾害损失及风险降至最低。     

Study on the photosynthetic performances of Enteromorpha prolifera collected from the surface and bottom of the sea of Qingdao sea area

In this work, the photosynthetic performances of Enteromorpha prolifera thalli collected from the sur- face and bottom of the sea of Qingdao sea area were studied with chlorophyll fluorescence and oxy- graph technology. The samples with the highest photosynthetic activity among their kinds, the floating thalli from the sea surface of the south of the Qingdao Olympic Sailing Center and the sedimentary thalli from the mud surface of the bottom Tuandao bay, were chosen as representatives of surface thalli and ...     

Determination of solid Earth tide phase lag by satellite observation data

The geopotential variation caused by solid Earth, ocean and atmospheric tides can be estimated from artificial satellite orbit perturbations. It is shown that the total tidal variation in geopotential field derived from satellite tracking data, combined with the recent accurate measurements of ocean tide obtained by Topex/Poseidon and atmospheric tide model, permits the estimates of the solid earth tide phase lags for M2 and K1 constituents (respectively 0.12° and 0.13°). This result agrees rather well with the result 0.16° derived from satellite data by Ray and the constrained theoretical result 0.21° given by Zschau; whereas the results given by gravity tidal methods are rather scattering in the phase lag determination.     

舟山老塘山港区2万吨级码头工程潮流数模及港池泥沙回淤分析

通过潮流数值模拟计算及工程建设后对港域潮流场的变化,分析了拟实施方案对老塘山港域淤积所产生的影响,为码头工程的建设提供科学依据。     

江苏海岸港口特征潮位计算与分析

利用潮汐调和分析程序对江苏海岸6个港口2001年4~6月份的高低潮位资料进行调和分析,得出了11个分潮的调和常数、平均海平面和特征潮位,并进行了一致性验证.利用预报程序预报了2000~2005年的时序潮位和高、低潮位,所得结果与潮汐表预报潮位基本一致.利用预报结果计算了工程设计高、低潮位,时序潮位累积频率99%对应的潮位与低潮位序列数据累积频率90%对应的潮位一致.根据特征潮位数据拟合出了各验潮站特征潮位间的关系表达式.     

一种新的海水中石莼属海藻显微阶段个体数定量方法及在黄海绿潮爆发过程中的应用

本文介绍了一种准确定量海水中石莼属(Ulva)海藻显微阶段个体数的方法, 同时应用这一方法在2009年黄海绿潮形成的初期、爆发期和后期对黄海海域水样进行了4个航次的调查研究. 结果表明, 表层海水的显微阶段个体数量较多, 随着深度的增加, 有逐渐递减的趋势; 8月份平均每升海水中的显微阶段的个体数量较5月份多. 这一定量方法将在预测海水中潜在绿潮海藻生物量和预测绿潮爆发规模方面有广阔的应用前景.