搜索结果: 61-75 共查到“知识库 物理海洋学”相关记录186条 . 查询时间(0.356 秒)
Influence of bottom water anoxia on nitrogen isotopic ratios and amino acid contributions of recent sediments from small eutrophic Lonar Lake, central India
nitrogen isotopic ratios Influence
2014/4/2
Lonar Lake is a eutrophic, saline soda lake with permanently anoxic deep water. The high pH and
deoxygenation result in very elevated d15N of suspended particulate matter (SPM) and sediments due to
...
Environmental selection and resource allocation determine spatial patterns in picophytoplankton cell size
Environmental selection picophytoplankton cell
2014/4/2
Here we describe a new trait-based model for cellular resource allocation that we use to investigate the relative
importance of different drivers for small cell size in phytoplankton. Using the model...
近海精细风场数值预报系统设计
NCE 格点资料 数值模式 精细风场
2014/7/15
以普通工作站作为运算平台, 输入NCEP格点资料、常规地面和探空资料, 对数值模式进行分析与筛选, 通过信息流程、物理方案、自动运行方案的设计, 建立了近海精细风场数值预报系统, 实现了近海精细风场的自动预报与显示。
Response of phytoplankton in an alpine lake to inputs of dissolved organic matter through nutrient enrichment and trophic forcing
Response of phytoplankton trophic forcing
2014/4/2
Inputs of terrestrially derived dissolved organic matter (DOM) are increasing in alpine lakes due to multiple
drivers such as climate change, tree line advancement, and insect epidemics. A 21 d micro...
Global patterns in oceanic planktonic metabolism
oceanic planktonic metabolism Global patterns
2014/4/2
Rates of gross primary production (GPP) and respiration (CR) of plankton communities in the upper ocean
were evaluated on the basis of a data set comprising 3149 paired light and dark bottle measurem...
煤层气试井注入压降法模拟实验
煤层气试井 注入压降法 渗透性 多级注入
2014/4/11
煤层气开发首先需要通过试井分析来反演地层参数,而注入压降法是煤层气开发过程中最常用的试井方法。为进一步扩展注入压降法在煤层气试井中的适用性,尽量在煤层气试井过程中获得更多的地层信息,提高试井解释合格率,通过室内模拟实验的方法研究了注入压降法试井新方法。首先建立了室内模拟实验装置,通过控制注入流量的变化,获得井底压力时程变化曲线,与现场试井得到的井底压力曲线形式一致,证明室内模拟实验能够复现现场试井...
From basalts to boninites: The geodynamics of volcanic expression during induced subduction initiation
volcanic expression induced subduction initiation
2014/4/8
Subduction initiation may unfold via different pathways in response to plate strength, plate age, and driving mechanism. Such pathways
infl uence volcanism on the overriding plate and may be p...
Dispersal, eddies, and the diversity of marine phytoplankton
plankton biodiversity hotspots
2014/4/1
We examined the role of physical dispersal in regulating patterns of diversity of marine phytoplankton in
the context of global ocean simulations at eddy-permitting and coarse resolutions. Swifter cu...
On the global estimates of geostrophic and Ekman surface currents
drifter buoys Lagrangian trajectory applications ocean circulation and dynamics
2014/4/1
Surface currents in oceanic environments are of crucial importance because they transport momentum, heat, salt, and tracers over large distances that regulate both the local and large-scale climate co...
Origins of Karenia brevis harmful algal blooms along the Texas coast
harmful algal bloom regional ocean modeling system, particle tracking Gulf of Mexico algal bloom
2014/4/1
The dinoflagellate Karenia brevis is the major harmful algal bloom (HAB) species in the Gulf of Mexico.
Given that the rapid appearance of K. brevis cannot be explained by plankton growth alone...
扩散边界层(DBL)控制了沉积物和上覆水间物质的交换, 在潮流底边界层(BBL)的动力过程影响下, 海洋DBL 的厚度变化很大, 溶解物质的扩散通量也有很大变化. 因此探究影响DBL 厚度和扩散通量变化的动力机制是准确估算扩散通量的关键前提, 对近海水体营养盐补充和环境二次污染等问题的准确估计有重要意义. 利用微尺度剖面仪和高频流速仪等对BBL的动力结构和DBL 进行了联合观测. 运用线性分布、剖...
深海科学是全球气候变化研究的重要组成部分, 孕育着科学上的重大突破和发现, 是海洋科学研究的重要领域. 近些年来, 随着我国对深海科学研究的逐步深入, 南海深海环流研究越来越引起海洋科学家的关注, 并已取得若干研究成果. 本文将从南海深海环流观测出发, 首先总结近年来南海深海环流观测方面研究工作, 然后介绍南海深海环流未来研究初步设想.
波浪对透空式结构物冲击作用的光滑粒子流体动力学数值模拟
光滑粒子流体动力学 波浪冲击 数值水槽
2012/3/9
基于光滑粒子流体动力学(SPH)方法的二维数值波浪水槽模拟了规则波对透空式结构物的冲击作用。通过黎曼解和CSPM相结合的方法对连续方程和动量方程进行了修正。对造波边界采用虚粒子法模拟。提出了一种耦合计算方法来消除造波边界附近的压力波动现象,在结构物边界处设置了适合的冲击边界条件。应用修正的SPH模型模拟了规则波对浪溅区结构物的冲击作用,给出了结构物附近流场和压力场的变化特征,并应用物理模型试验结果...
Krill (Meganyctiphanes norvegica) swim faster at night
Meganyctiphanes norvegica temporal resolution
2014/4/8
Krill are key members in marine food webs, and measurement of swimming speed is vital to assess their
bioenergetic budgets, feeding, and encounters with predators. We document a consistent and marked...
Importance of N2 fixation vs. nitrate eddy diffusion along a latitudinal transect in the Atlantic Ocean
the Atlantic Ocean nitrate eddy
2014/4/8
We present ocean, basin-scale simultaneous measurements of N2-fixation, nitrate diffusion, and primary
production along a south–north transect in the Atlantic Ocean crossing three biogeographic provi...