搜索结果: 1-15 共查到“海洋化学 over a lake”相关记录15条 . 查询时间(0.093 秒)
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...
Stratification and horizontal exchange in Lake Victoria, East Africa
Lake Victoria East Africa
2014/11/28
We characterize stratification patterns over diel, seasonal, and annual time scales in inshore and offshore
regions of Lake Victoria, East Africa; determine conditions leading to horizontal exchanges...
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...
Dissolved carbon dioxide concentration controls baseline stable carbon isotope signatures of a lake food web
Dissolved carbon dioxide concentration controls baseline stable carbon isotope signatures a lake food web
2014/4/4
Temporal variation in the baseline stable carbon isotope (δ13C) value of a well-studied, productive lake was examined over a 26-yr period using archived samples of the herbivorous zooplankter Daphnia ...
Seasonal change in microbial sulfur cycling in monomictic Lake Fukami-ike, Japan
Seasonal change microbial sulfur cycling monomictic Lake Fukami-ike Japan
2014/4/4
Sulfur budgets and seasonal progression of sulfur cycling processes were investigated in Lake Fukami-ike, a small monomictic lake in Japan. The sulfur isotopic mass balance shows that the main sulfur ...
A methane bubble curtain in meromictic Sakinaw Lake, British Columbia
A methane bubble curtain meromictic Sakinaw Lake, British Columbia
2014/4/17
Hydroacoustic surveys in meromictic Sakinaw Lake found an approximate 20-m-wide dual-column bubble curtain originating from a depth of 42–60 m all around the main basin at the interface between the ch...
Seasonal variations in the concentrations of methyl and ethyl nitrate in ashallow freshwater lake
Seasonal variations in the concentrations methyl ethyl nitrate in a shallow freshwater lake
2014/4/16
Between February and October 2007, a time series of alkyl nitrate concentrations in the water column of a shallow freshwater lake, University of East Anglia Broad, located in southeastern England was ...
Physical and chemical predictors of diatom dissolution in freshwater and saline lake sediments in North America and West Greenland
Physical and chemical predictors diatom dissolution in freshwater saline lake sediments North America West Greenland
2014/5/4
Diatom dissolution in surface sediment samples from two regional lake datasets in the Northern Great Plains (NGP; n = 64) and West Greenland (n = 40) is assessed using a morphological approach categor...
Elevated levels of dimethylated-sulfur compounds in Lake Bonney, a poorly ventilated Antarctic lake
dimethylated-sulfur compounds Lake Bonney a poorly ventilated Antarctic lake
2014/5/19
Lake Bonney is a permanently ice-covered lake in the McMurdo Dry Valleys, Antarctica. The lake has two chemically stratified lobes (referred to as the east and west lobes), each with distinct biogenic...
Nutrient cycling in a strongly acidified mesotrophic lake
Nutrient cycling a strongly acidified mesotrophic lake
2014/5/19
In contrast to the well-known nutrient transformations in circumneutral lakes, acidified water bodies may exhibit significant changes in nutrient cycling due to changes in their chemistry and biology....
In situ pCO2 and O2 measurements in a lake during turnover and stratification: Observations and modeling
pCO2 O2 measurements lake during turnover stratification Observations and modeling
2014/5/14
Sensors for the partial pressure of CO2 (pCO2) and dissolved O2 (DO) were deployed near the surface and bottom of a freshwater lake (Placid Lake, Montana) during the period from ice cover to seasonal ...
Interannual variation of the isotopic composition of sedimenting organic carbon and nitrogen in Lake Lugano: A long-term sediment trap study
Interannual variation isotopic composition sedimenting organic carbon and nitrogen Lake Lugano long-term sediment trap study
2014/5/14
We examined the evolution of δ13C and δ15N of sedimenting particulate organic matter (SPOM) in response to changes in primary productivity, nutrient loading, and plankton dynamics in Lake Lugano betwe...
Origin and diagenesis of polyphosphate in lake sediments: A 31 P-NMR study
polyphosphate lake sediments
2014/5/14
Polyphosphate (poly-P) was detected with the use of
31
P nuclear magnetic resonance (NMR) spectroscopy in
sediments from a large variety of lakes with different trophic state and morphometry. In th...
Dissolution from a liquid CO2 lake disposed in the deep ocean
Dissolution liquid CO2 lake disposed deep ocean
2014/5/20
The dissolution from a liquid CO2 lake source located at a flat ocean bottom at 3,000 m depth is investigated. Using the unsteady, two-dimensional advection-diffusion equation, temporal and spatial di...
The interaction of phytoplankton and bacteria in a high mountain lake: Importance of the spectral composition of solar radiation
phytoplankton and bacteria high mountain lake spectral composition solar radiation
2014/5/26
The role of spectral composition of solar radiation has seldom been considered as a critical factor controlling the algae-bacteria relationship. A coupled algae-bacteria relationship mediated by C rel...