搜索结果: 1-10 共查到“海洋化学 water”相关记录10条 . 查询时间(0.242 秒)
Organic Chemicals of Environmental Concern:Water Sampling and Analytical Challenges
Organic Chemicals Environmental Concern Water Sampling Analytical Challenges
2015/7/17
A detailed understanding of the biogeochemical cycles of organic chemicals of environmental concern (OCEC) in the ocean requires measurement of their concentrations in the water column (Farrington and...
Stable isotope estimates of evaporation : inflow and water residence time for lakes across the United States as a tool for national lake water quality assessments
inflow water residence
2014/11/28
We used water d2H and d18O from ca. 1000 lakes sampled in the 2007 U.S. Environmental Protection Agency’s
National Lakes Assessment (NLA) to assess two hydrological variables—evaporation as a percent...
A regime shift in Lake Superior ice cover, evaporation, and water temperature following the warm El Nin˜ o winter of 1997–1998
ice cover evaporation water temperature
2014/11/28
Significant trends in Lake Superior water temperature and ice cover have been observed in recent decades, and
these trends have typically been analyzed using standard linear regression techniques. Al...
Trace metal cycling in the deep water of the South China Sea: The composition, sources, and fluxes of sinking particles
Trace metal cycling in the deep water the South China Sea composition sources fluxes of sinking particles
2014/4/8
Moored sediment traps were deployed for 1 yr at depths of 120, 600, and 3500 m in the water column to investigate the trace metal (M) (Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn) composition, sources, ...
Sedimentary phosphorus dynamics and the evolution of bottom-water hypoxia: A coupled benthic–pelagic model of a coastal system
Sedimentary phosphorus dynamics a coastal system
2014/4/8
The present study examines oxygen and phosphorus dynamics at a seasonally hypoxic site in the Arkona basin
of the Baltic Sea. A coupled benthic–pelagic reactive-transport model is used to describe th...
Resilience of pore-water chemistry and calcification in photosyntheticzones of calcifying sediments
Resilience of pore-water chemistry calcification in photosyntheticzones calcifying sediments
2014/4/16
Photosynthetically driven calcification was investigated in diatom-dominated carbonate sediments from Bait Reef, Australia. Laboratory measurements conducted over complete diel cycles, using O2, pH, C...
Photo-oxidation of dissolved organic matter in river water and its effect on trace element speciation
Photo-oxidation dissolved organic matter in river water trace element speciation
2014/5/4
To investigate the effect of photodegradation of fluvial dissolved organic matter (DOM) on dissolved trace element distributions, we performed a 3-week incubation of water from the lower Pearl River (...
Molecular-level chemical characterization and bioavailability of dissolved organic matter in stream water using electrospray-ionization mass spectrometry
Molecular-level chemical characterization bioavailability dissolved organic matter stream water electrospray-ionization mass spectrometry
2014/5/8
We used electrospray-ionization mass spectrometry (ESI-MS) to characterize, at the compound level, dissolved organic matter (DOM) composition and bioavailability in two streams. There was considerable...
Synchrony in relationships between the North Atlantic Oscillation and water chemistry among Sweden’s largest lakes
North Atlantic Oscillation water chemistry Sweden's largest lakes
2014/5/19
The North Atlantic Oscillation (NAO) is commonly presented as an easy and reliable index that can be used to study climatic effects on aquatic ecosystems. Here, the NAO winter index (NAOW) was applied...
Spatial and diurnal dynamics of dissolved organic matter (DOM) fluorescence and H2O2 and the photochemical oxygen demand of surface water DOM across the subtropical Atlantic Ocean
Spatial and diurnal dynamics dissolved organic matter DOM fluorescence and H2O2 photochemical oxygen demand surface water DOM across subtropical Atlantic Ocean
2014/6/9
Diurnal dynamics of dissolved organic matter (DOM) fluorescence and hydrogen peroxide (H2O2) concentrations were followed in the upper 100 m of the water column at five stations across the subtropical...