搜索结果: 46-60 共查到“知识库 海洋物理学”相关记录3965条 . 查询时间(1.842 秒)
The Bridge Web Site:Growing and Sustaining Partnerships Between Ocean Science and Education
Bridge Web Site Growing and Sustaining Partnerships Ocean Science and Education
2015/7/3
When physicist Tim Berners-Lee and a team of fellow scientists at the European Center for High Energy Physics (CERN) launched the first-ever Web site in 1989, their goal was to make it easier for scie...
LONG-TERM MARINE TRAFFIC MONITORING FOR ENVIRONMENTAL SAFETY IN THE AEGEAN SEA
marine traffi c monitoring spatiotemporal analysis
2015/5/7
The Aegean Sea is characterized by an extremely high marine safety risk, mainly due to the significant increase of the traffic of tankers from and to the Black Sea that pass through narro...
Physicochemical and biological controls on primary and net community production across northeast Pacific seascapes
northeast Pacific seascapes Physicochemical biological controls
2014/11/28
The subarctic–subtropical transition zone in the North Pacific represents the second largest sink of
atmospheric carbon dioxide in the world ocean, yet the relative importance of physical and biologi...
Comparative responses of two dominant Antarctic phytoplankton taxa to interactions between ocean acidification, warming, irradiance, and iron availability
ocean acidification warming irradiance
2014/11/28
We investigated the responses of the ecologically dominant Antarctic phytoplankton species Phaeocystis
antarctica (a prymnesiophyte) and Fragilariopsis cylindrus(a diatom) to a clustered matrix of th...
Between- and within-population variations in thermal reaction norms of the coccolithophore Emiliania huxleyi
group the coccolithophore Emiliania huxleyi
2014/10/16
Thermal reaction norms for growth rates of six Emiliania huxleyi isolates originating from the central Atlantic
(Azores, Portugal) and five isolates from the coastal North Atlantic (Bergen, Norway) w...
Phosphorus enrichment and carbon depletion contribute to high Microcystis biomass and microcystin concentrations in Ugandan lakes
Phosphorus enrichment carbon depletion contribute
2014/4/2
We investigated the factors influencing cyanobacterial biomass and microcystin (MC) concentrations in several
Ugandan lakes from September 2008 to February 2009. We characterized thermal structure, l...
The total radiant energy, and the average depth of all the photons, in the water column
The total radiant energy the average depth all the photons in the water column
2014/4/2
Using radiative transfer theory I show that for a given waveband, the total radiant energy,Qt, present within the water column (per square meter of surface) is proportional to the scalar irradiance ju...
Using stable nitrogen isotopes to evaluate the relative importance of external and internal nitrogen loadings on phytoplankton production in a shallow eutrophic lake (Lake Mikata, Japan)
a shallow eutrophic lake phytoplankton production
2014/4/2
The seasonal variability of the stable nitrogen isotope (d15N) in phytoplankton and dissolved inorganic
nitrogen (DIN) in the shallow, eutrophic Lake Mikata was examined to assess the relative import...
The maintenance of the subsurface chlorophyll maximum in the stratified western Irish Sea
subsurface chlorophyll maximum nutrient fl ux turbulent mixing internal waves Irish Sea
2014/4/1
The diapycnal flux of nitrate from the deep water provides a limit on new production in the subsurface
chlorophyll maximum (SCM) during summer in stratified shelf seas. Here we estimate t...
辽河口海域短链氯化石蜡污染特征及生物富集
短链氯化石蜡 沉积物 生物 污染来源 生物/沉积物富集因子 辽河口
2014/3/4
短链氯化石蜡（SCCPs）是《斯德哥尔摩公约》拟增列的一类新型持久性有机污染物. 本文研究了辽河口海域沉积物和生物样品中SCCPs的含量水平、组成模式、污染来源及生物/沉积物富集因子. 结果表明，沉积物中∑SCCPs的浓度为64.9~1683.4 μg/g dw （均值为419.7），生物体中∑SCCPs浓度为1.55~11.9 mg/g dw （均值为6.14）；沉积物和生物体同系物碳链长度主要...
层状各向异性介质中任意取向电偶源的海洋电磁响应
各向异性 一维 海洋可控源电磁 汉克尔变换
2015/8/14
从麦克斯韦方程组出发,利用双重傅里叶变换和矢量势函数,详细推导出了层状各向异性介质中任意取向电偶源的电磁场计算公式,利用汉克尔数值滤波方法计算得到电磁场,并验证了算法的正确性和精度.有限长电偶源不能作为电偶极子源计算其电磁场响应,尤其是在收发距较小的情况下,可以采用积分法或者将有限长电偶源剖分成足够多的电偶极子源计算其电磁响应后累加得到有限长电偶源的电磁响应.针对海底油气模型,分析了覆盖层和油气层...
水体非均匀性对南海深水区地震成像的影响
非均匀水体 中尺度涡 成像畸变 温度扰动
2013/11/1
考察了南海深水区水体非均匀性对地震成像的影响. 将波动方程方法推广到非均匀运动水体, 计算了地震波场瞬时快照, 结果表明水体非均匀性影响了地震波的传播时间, 在零偏移距处该影响最大可达20 ms. 特别地, 中尺度涡会使目标地层成像发生畸变, 而水体内温度变化是造成这种畸变的根本原因. 最后, 给出了评估非均匀水体对地震成像影响的方法.
猪尾鼠(Typhlomys cinereus) 广东省新纪录
猪尾鼠 新纪录 南岭 广东省
2016/7/19
We collected a specimen of Chinese Pygmy Dormouse (Typhlomys cinereus)from Nanling Nature Reserve in Guangdong Province in August 2012,analyzed the specimen’s morphological and skull indices,and compa...
Seasonal and diel patterns in sedimentary flux of krill fecal pellets recorded by an echo sounder
echo sounder Seasonal diel patterns
2014/4/2
We used a moored upward-facing 200 kHz echo sounder to address sedimentation of fecal pellets (FPs) from
dielly migrating Meganyctiphanes norvegica. The echo sounder was located on the bottom at 150 ...
Recent lake ice-out phenology within and among lake districts of Alaska, U.S.A.
lake districts of Alaska
2014/4/2
The timing of ice-out in high latitudes is a fundamental threshold for lake ecosystems and an indicator of
climate change. In lake-rich regions, the loss of ice cover also plays a key role in landsca...