利用卫星观测海面信息反演三维温度场

基于历史观测的温盐剖面资料,采用回归分析方法统计出海面温度异常、海面动力高度异常与温度剖面异常之间的相关关系;然后利用高分辨率的卫星遥感海表面温度(SST)和卫星观测海面高度(SSH)信息重构了三维海洋温度场。在台湾岛周边海域建立了时间分辨率为天、空间分辨率为0.25°×0.25°的三维温度分析场。通过与实测资料的比较分析,文章所构建的分析场能够较好地描述海洋三维温度场的结构特征,能够较为真实地反映海洋的中尺度变化过程。该分析场可以作为海洋数值模式的初始场,也可以作为伪观测同化到海洋数值再分析和预报系统中,进而改善三维温、盐、流的数值再分析和预报。     

西湖硅藻对桡足类浮游动物繁殖的影响

本文报道从杭州西湖筛选分离的两种淡水硅藻,即尖针杆藻Ｓｙｎｅｄｒａａｃｕｓ和谷皮菱形藻Ｎｉｔｚｓｃｈｉａｐａｌｅａ对西湖两种淡水浮游桡足类,即近亲拟剑水蚤Ｐａｒａｃｙｃｌｏｐｓａｆｆｉｎｉｓ和大尾真剑水蚤Ｅｕｃｙｃｌｏｐｓｍｕｃｒｒｏｉｄｅｓ卵孵化率的影响。结果表明,在较高密度的硅藻培养液（１．２×１０４～５．４×１０４个／ｃｍ３）中培养的桡足类动物,其卵的孵化率比生活在自然水体中的有明显降低,并发现该密度的实验硅藻对其摄食者——桡足类的母体也产生一定的毒害作用。该实验结果与已报道的某些海洋硅藻对海洋桡足类存在毒害作用的结果,对水域生态系食物链（网）中硅藻作用的传统概念提出了挑战,对水域生态学研究提出了新课题。     

The progress in the study of Arctic pack ice ecology

The sea ice community plays an important role in the Arctic marine ecosystem. Because of the predicted environmental changes in the Arctic environment and specifically related to sea ice, the Arctic pack ice biota has received more attention in recent years using modem ice-breaking research vessels. Studies show that the Arctic pack ice contains a diverse biota and besides ice algae, the bacterial and protozoan biomasses can be high. Surprisingly high primary production values were observed in the pack ice of the central Arctic Ocean. Occasionally biomass maximum were discovered in the interior of the ice floes, a habitat that had been ignored in most Arctic studies. Many scientific questions, which deserve special attention, remained unsolved due to logistic limitations and the sea ice characteristics. Little is know about the pack ice community in the central Arctic Ocean. Almost no data exists from the pack ice zone for the winter season. Concerning the abundance of bacteria and protozoa, more studies are needed to understand the microbial network within the ice and its role in material and energy flows. The response of the sea ice biota to global change will impact the entire Arctic marine ecosystem and a long-term monitoring program is needed. The techniques, that are applied to study the sea ice biota and the sea ice ecology, should be improved.     

前言

长江口地处我国经济社会高度发达的东部沿海,与世界其它河口发达地区一样,长江口及邻近海域的生态与环境面临巨大压力和挑战。同时,大河输入、黑潮和东亚季风的相互作用,构成了长江口及邻近海域独特的区域海洋环境,是地球上研究自然变化和人类活动对近海环境演变     

马尔柯夫链原理在海雾短期预报中的应用

本文应用了马尔柯夫链原理,采用转移概率矩阵的方法,建立了预报南海海雾的模式方程,且通过实际的业务试报反映出具有较好的预报能力。     

The biogeochemistry of carbon cycle in summer of the Prydz Bay, Antarctic Ⅰ:Characteristics of DOC distribution

1　IntroductionAtthepresenttime ,thereiseveryindicationthattheearthbecomingwarmerandwarmer (Liuetal.1 995) ,asoneofthewarmhousegases,CO2 playanimportantroleinthechangingofthetemperatureandenvironmentoftheglobe .TheexchangingofCO2betweentheatmosphereandocean ,maketheoceanbeingthelargepoolofcarbon ,andthechangingofcarboncycleintheoceanwouldbringdistincteffectontheatmosphere .TheSouthernOceanisthewaterbodythathastheenormousenergyandexchangessub stancewithotheroceansintheglobe ,anditsecosystem …     

Oxygen isotopic composition and its application to the study of tracing oceanographical process in Bering Sea and Chukchi Sea

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ18Ｏｉｎｍａｒｉｎｅｅｎｖｉｒｏｎｍｅｎｔｐｌａｙｓａｎｉｍｐｏｒｔａｎｔｒｏｌｅｉｎｏｃｅａｎｏｇｒａｐｈｉｃａｌｓｔｕｄｙ .Ａｓａｓｔａｂｌｅｉｓｏｔｏｐｅｏｆｏｘｙｇｅｎ ,18ＯｔｏｇｅｔｈｅｒｗｉｔｈｈｙｄｒｏｇｅｎａｔｏｍｓｃｏｎｓｔｉｔｕｔｅｓｗａｔｅｒｍｏｌｅｃｕｌｅＨ218ＯａｎｄｍｏｖｅｓｗｉｔｈａｌａｒｇｅａｍｏｕｎｔｏｆＨ2 Ｏｍｏｌｅｃｕｌｅｓｉｎｓｅａｗａｔｅｒ.Ｓｏｔｈａｔδ18Ｏｂｅｃｏｍｅｓａｎｉｄｅａｌｔｒａｃｅｒｆｏｒｔｈｅｍｏｖｅｍｅｎｔｏ…     

强潮环境下的海滩剖面沉积特征——以春季广西北海银滩为例

海滩地貌动力状态是海滩过程和陆海相互作用研究中的重要内容,但目前国内对北部湾强潮环境下的砂质海滩地貌与沉积的研究相对较少。对2010年3月采集的北海银滩剖面高程与沉积物变化的资料进行分析,探讨此类海滩响应外在驱动力作用的地貌动力状态特征,结果表明:1)北海银滩地貌结构简单,地貌状态属于消散型类型。2)银滩沉积物类型为砂,并以细砂、中砂为主,沉积物分选性较好;此外,沉积物中砂的百分含量和中值粒径自陆向海逐渐减小,而极细砂的百分含量则逐渐增加。3)北海银滩横向剖面沉积物可区分为后滨、滩面和内滨3个沉积单元。后滨沉积物在风的作用下以跃移质为主;滩面沉积物因波浪形成的冲流作用而具有双向运动的性质;内滨沉积物主要受控于波浪和潮流的联合驱动作用而以跃移质组分为主。     

ENSO循环的非对称性及其机制初步探讨

利用SODA(Simple Ocean Data Assimilation)资料,以Nino3.4区SSTA(sea surface temperature anomaly)指数为标准,选取典型El Nio和La Nia事件进行合成分析,观察ENSO的非对称性。通过分析ENSO事件发生过程中温跃层深度异常和斜压能量转化率的变化,研究其对ENSO循环非对称性的影响。由于与ENSO相关的海洋异常信号在南、北太平洋的传播主要是以Rossby波的形式,Rossby波可以通过不稳定机制获得能量成长和传播,斜压能量转化率越强,携带ENSO相关海洋异常信号的Rossby波就可能获得更多的能量成长,这种信号传播至赤道区域可以更快地导致ENSO事件的爆发。研究表明,在El Nio事件达到顶峰时,北太平洋ENSO相关的Rossby波传播区斜压不稳定能量很强(可使Rossby波增幅)、温跃层加深(可使Rossby波加速),有利于El Nio相关的暖信号传出,这很好地解释了El Nio事件总是比La Nia事件振幅大以及El Nio事件向La Nia事件转化比La Nia事件向El Nio事件转化快很多的现象。因...     

Expression of putative zinc-finger protein lcn61 gene in lymphocystis disease virus China (LCDV-cn) genome

An open reading frame (lcn61) of iymphocystis disease virus China (LCDV-cn), probably responsible for encoding putative zinc-finger proteins was amplified and inserted into pET24a (+) vector.Then it expressed in E. coli BL21 (DE3), and His-tag fusion protein of high yield was obtained. It was found that the fusion protein existed in E. coli mainly as inclusion bodies. The bioinformatics analysis indicates that LCN61 is C2H2 type zinc-finger protein containing four C2H2 zinc-finger motifs. This work provides a theory for functional research of lcn61 gene.