北斗剖面浮标数据服务系统设计与业务运行

北斗剖面浮标数据服务系统主要由北斗剖面浮标数据自动接收/监视子系统和北斗剖面浮标数据解码、处理及分发共享子系统组成,具备自动、批量、业务化接收国产北斗剖面浮标数据,以及业务化处理和分发浮标数据的能力,为我国主导建设南海或“21 世纪海上丝绸之路”Argo 区域海洋观测网提供了关键技术保障。催生的中国北斗剖面浮标数据服务中心,也为北斗剖面浮标走出国门、参与国际竞争奠定了坚实基础,成为世界上 3 个有能力为全球 Argo 实时海洋观测网提供剖面浮标观测数据服务的国家平台之一。     

多波束测深系统海底目标探测能力评估方法

为了有效衡量多波束测深系统的目标探测性能,提高舰船水下目标搜寻、援潜救生和打捞能力等,对当前多波束测深系统目标探测问题进行分析,推导了多波束测深系统目标探测分辨率估计模型。以SONIC 2024型多波束测深系统为例,分析了不同水深下在多波束测深系统垂直航迹方向、沿航迹方向分辨率的变化规律及量级大小,对覆盖宽带和航速等参数指标设置提出了合理建议,为多波束测深系统目标探测能力的准确评估提供依据,具有一定参考价值。     

论水库的三角洲淤积(二)

根据不平衡输沙方程,论证了水库淤积的三角洲趋向性.用水库淤积与河床演变通用数学模型对水库淤积过程进行了“试验”,得到了典型三角洲的形成与发展的全过程.据此对于已形成三角洲的水库,利用非均匀悬移质不平衡输沙理论,推导了一整套三角洲形态特征的理论表达式,包括三角洲淤积百分数、前坡淤积百分数、洲面线方程、水面线方程、前坡长度、洲面和前坡淤积物级配及各特征断面的悬移质级配。阐述了三角洲推进的定量方程和三角洲形成的条件,包括水库淤积百分数及水位变幅。对三角洲的形成、形态特征、推进及转化作了较全面和系统的定量分析。     

创伤弧菌疫苗对青石斑鱼的免疫学效应和安全性

弧菌病是海水网箱养殖石斑鱼Ｅｐｉｎｅｐｈｅｌｕｓ主要疾病之一。本文利用致病菌──创伤弧菌Ｖｉｂｒｉｏｖｕｌｎｉｆｉｃｕｓ强毒菌株制备出安全性很高的福尔马林灭活疫苗（ＦＶ）和热灭活疫苗（ＨＶ）。这两种疫苗无论使用佐剂与否，通过肌肉注射接种青石斑鱼Ｅ．ａｗｏａｒａ都能使鱼体在较短时间内产生较强的体液免疫应答，而且抗体效价能维持较长时期。免疫后的青石斑鱼获得了良好的免疫保护力。     

白云鄂博矿床钍富集过程及空间分布规律

白云鄂博矿床为一特大型Fe-REE多金属矿床,同时伴生有巨量的钍资源。然而,目前开发利用的矿种主要是铁和稀土资源,钍资源利用率几乎为零。查明矿床中钍资源的赋存状态和分布规律及揭示钍资源的富集过程及机制是今后钍资源开发利用的重要基础。本文依托近些年的系统采样及分析测试成果,对白云鄂博主、东、西矿区570个样品进行了详细的矿物学观察和全岩化学分析,在不同类型矿石中识别出以硅钍石为主的独立含钍矿物,硅钍石除少量呈现被稀土矿物包裹现象外,通常以细脉状穿插于稀土矿物内部,显示其明显滞后富集的特点。矿区Th O_-2平均品位达0.0322%,高出地壳钍克拉克值(9.6×10^-6)30多倍,各种矿石类型中Th O₂含量具有明显的差别,在云母型、闪石型、霓石型和萤石型矿石中具有高含量Th O₂,而白云石型矿石中Th O₂含量较低,指示矿区钍矿化主要形成于碱性热液交代和萤石化阶段。此外矿区随深度增加钍矿化作用加强,显示出矿床具有良好的钍资源成矿潜力。     

An Analysis of Tectonic Geomorphologic Characteristics of the Beipanjiang Basin in the Yunnan-Guizhou Plateau

The Yunnan-Guizhou Plateau, located on the southeast boundary of the Tibet Plateau, is the second geomorphologic step in China continent. The large area tilting tectonic deformation occurred in this plateau with the uplift of the Tibet plateau since the Cenozoic. The Beipanjiang River rises in eastern Yunnan Province and southeastward across the slope zone from the Yunnan-Guizhou Plateau to the Guangxi Plain, and goes into the Hongshui River by the Wangmo in Guizhou Province. Due to the southeastward extrusion by the Tibetan Plateau, deep incised-valleys formed in the Yunnan-Guizhou Plateau, which have the characteristics of developed fault, complicated geological structure and rugged terrain. The Cenozoic evolution history of the Yunnan-Guizhou Plateau and the response to the uplifting of Tibet Plateau are unclear because of the lack of sedimentation records, and also this has long been a bottleneck to geomorphologic evolution research. Based on DEM data and GIS software, we extracted the geomorphic indexes which included hypsometric integral [HI], drainage basin asymmetry [AF], stream-length gradient index [SL], and valley floor width-to-height ratio [VF]. The results show that four geomorphic indexes can reflect the regional tectonic movement and topographical features. The geomorphology of Beipanjiang Basin is controlled by tectonic action mainly, especially the Yadu-Ziyun Fracture has great impact on the formation of valleys and the development of water system greatly.     

The impact of atmospheric deposition of cadmium on dominant algal species in the East China Sea

Cadmium(Cd) mainly derived from anthropogenic emissions can be transported through atmospheric pathway to marine ecosystem,affecting the phytoplankton community and primary productivity.In this study,we identified the toxicity threshold of Cd for phytoplankton under seawater conditions of the coastal East China Sea(ECS) through both laboratory and in situ mesocosm incubation experiments.The mesocosm experiment showed that Cd in low concentration(0.003 μg per μg chl a) was conducive to the growth of natural community and increased chl a productivity.In high concentration(0.03 μg per μg chl a) Cd acted as an inhibiting factor which decreased the total chl a productivity.The diatom community was found to be more sensitive to Cd toxicity than dinoflagellate,as the low concentration Cd showed toxicity to diatom but enhanced dinoflagellate growth.We noticed that the soluble Cd estimated from atmosphere deposition to the coastal ECS was below the toxicity threshold and the Cd deposition might promote phytoplankton growth in this region.In our laboratory experiments,adding Cd,similar to aerosol deposition,stimulated the growth of both dominant algal species Prorocentrum donghaiense Lu(dinoflagellate) and Skeletonema costatum(diatom).Adding Cd on a higher level inhibited the growth of both the species,but Skeletonema costatum seemed obviously more sensitive to toxicity.This indicates the potential impact of atmospheric deposition Cd on phytoplankton community succession in the ECS.     

5000米地质岩心钻机主绞车设计

为应对深地探测工程对特深孔地质钻探装备提出的新要求,“十三五”国家重点研发计划立项开展5000 m地质岩心钻机的研发。作为钻机核心部件的主绞车,需要满足自动化、智能化钻探需求。在调研了主绞车的研究发展现状基础上,借鉴石油钻机绞车的结构,确定了本主绞车运行参数及方案,并对关键零部件进行了设计与选型,完成了主绞车的设计。经过验算,主绞车运行参数能满足特深孔岩心钻探工艺的要求,并可以在地热、浅层油气探采等领域进行应用拓展。     

论水库的三角洲淤积(一)

根据不平衡输沙方程,论证了水库淤积的三角洲向性。用水库淤积与河床演变通用数学模型对水库淤积过程进行了“试验”,得到了典型三角洲的形成与发展的全过程,据此对于已形成三角洲的水库,利用非均匀悬移质平衡输沙理论,推导了一整套三角洲形态特征的理论表达式,包括三角洲淤积百发数,前坡淤积百分数、洲面线方程,水面线方程,前坡长度,洲面和前坡淤积物级配及各特征断面的悬移质级配,阐述了三角洲推进的定量方程和三角洲形