搜索结果: 1-15 共查到“知识库 海洋化学”相关记录247条 . 查询时间(2.922 秒)
海洋条件下U型管内倒流特征压降数值模拟
海洋条件 U型管 倒流 特征压降
2016/12/16
自然循环工况下立式倒U型管蒸汽发生器内单相流体存在倒流现象，增大了自然循环流动阻力，减少了有效换热面积，对核动力装置的安全运行造成不利影响。针对该问题，利用Fluent软件研究了海洋条件下U型管内倒流特征压降的变化规律。结果表明，横摇和起伏特征压降的周期与横摇和起伏运动的周期相同，而纵摇特征压降的变化周期为纵摇周期的一半。横摇和纵摇特征压降波动振幅随横摇和纵摇周期的减小而增大，随横摇和纵摇振幅的增...
Analytical investigation on tsunamis generated by submarine slides
Analytical mathods froude number shallow-water approximations tsunami underwater landslides
2015/9/28
Tsunamis induced by landslides are a topic on which growing attention is being paid especially under the pressure of recent events in which movement of underwater masses have been recognised to be the...
Marine and continental aerosol effects on the upwelling solar radiation flux in Southern Portugal during the ACE-2 experiment
aerosol optical depth aerosol particle size-distributions aerosol radiative properties direct aerosol radiative forcing
2015/9/16
An overall number of 447 spectral series of aerosol optical depth were determined in the 0.4-3.7 mm wavelength
range by examining the IR-RAD sun-radiometer measurements carried out at Sagres (Portuga...
New Sensor Technology for In Situ Measurements of Ocean Chemistry
New Sensor Technology Situ Measurements Ocean Chemistry
2015/8/14
Chemical processes in the ocean and at its interfaces with the atmosphere and the seafloor play a major role in regulating global biogeochemical cycles. Predicting the impact of human disturbances on ...
It's OK to Work on Applications
Applications Work
2015/8/14
My hat is off to Briscoe and Evans (1993) for writing their insightful article titled "The Application of Marine Sciences in the Coming Decades." Their work does not suggest that marine scientists doi...
Micro- to Fine-Scale Chemical Gradients and Layers in Stratified Coastal Waters
Stratified Coastal Waters Chemical Gradients and Layers
2015/8/6
Models of biogeochemical dynamics and chemical variability in coastal waters have traditionally relied on the assumption that small-scale mixing processes are sufficiently strong and isotropic to rapi...
Knowledge of wave and surf conditions can play a major role in planning and executing a successful amphibious assault on a targeted beach (Figure 1). The dynamic surf zone is affected by waves that ma...
A Watery Road to Critical Thought: Oceanography's Place in Science Education
Science Education Oceanography's Place
2015/7/29
My greatest professional joy for more than three decades has been teaching general oceanography to students not majoring in science. Science education and science students have changed substantially o...
The Impact of Quaternary Global Changes on Strata Formation: Exploration of the Shelf Edge in the Northwest Mediterranean Sea
Strata Formation Northwest Mediterranean Sea
2015/7/29
Paleoceanographic and marine paleoclimatic investigations commonly use deep, open-ocean sediments or coral reefs to establish a continuous record of past global environmental changes because they both...
Introduction to Ocean Remote Sensing by Seelye Martin is an excellent textbook for teaching remote sensing of the oceans at the beginning of the 21st century. Since 1987, Dr. Martin has taught remote ...
Species and δ15N Signatures of Nitrogen Transformations in the Suboxic Zone of the Black Sea
Species and δ15N Signatures Nitrogen Transformations Suboxic Zone of the Black Sea
2015/7/27
Nitrogen is an essential nutrient for living systems in the ocean; it is a component of proteins, chlorophyll, and nucleic acids. In the oceans, nitrogen exists as a dissolved gas (N2), dissolved orga...
Seasonal Changes in the Hydrochemical Structure of the Black Sea Redox Zone
Seasonal Changes Hydrochemical Structure Black Sea Redox Zone
2015/7/27
The Black Sea is the world's largest marine anoxic basin. The Black Sea's water below a depth of ~100 m is enriched with hydrogen sulfide that formed after the intrusion of seawater as a result of sea...
Oceanography is a multidisciplinary field offering a range of career opportunities for the diversified workforce that exists today. Professionals conducting research or teaching about the oceans are e...
The red light district is located not on a seedy side street in a major city, but, oceanographers have discovered, in the deep sea. Animals that live in the sea's abyss produce and perceive red light,...
An Overview of Fixed Passive Acoustic Observation Methods for Cetaceans
Cetaceans Acoustic Observation Methods
2015/7/22
Cetaceans are increasingly being included as top trophic-level predators in models of ecosystem dynamics (Baumgartner and Mate, 2003; Tynan, 2004; Redfern et al., 2006). Traditional visual survey meth...