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Oxygen and helium abundances in galactic h II regions：abundance gradients
h II regions Oxygen helium
2009/6/5
Oxygen and helium abundances in galactic h II regions：abundance gradients。
Carbon and Oxygen Galactic Abundance Gradients: A Comparative Study of Stellar Yields
Stellar Yields Oxygen Galactic Gradients
2009/6/4
Carbon and Oxygen Galactic Abundance Gradients: A Comparative Study of Stellar Yields。
Imprints of a heliospheric bowshock on interstellar oxygen populations
heliospheric bowshock interstellar oxygen populations
2009/5/27
It is well known that the nearby interstellar medium represents a partially ionized gas composed by different chemical species, amongst them hydrogen, helium and oxygen as the most abundant elements. ...
The Livingstone and Imboden (1996) model for the oxygen depletion rate in lake hypolimnia was evaluated with field results in 32 lakes. The volumetric oxygen consumption rate (JV) was strongly related...
Intermittent oxygen flux from the interior into the bottom boundary of lakes as observed by eddy correlation
Intermittent oxygen flux observed
2014/4/21
Turbulent oxygen transport from the overlying stratified water column into the bottom boundary layer (BBL)
on the slope of a medium-sized lake was investigated using the eddy correlation (EC) techniq...
Mapping the spatial variability of plankton metabolism using nitrate and oxygen sensors on an autonomous underwater vehicle
Mapping the spatial metabolism using nitrate
2014/4/18
It is now possible to make highly resolved vertical (,1 m) and horizontal (3 m at constant depth and ,400 m
when undulating from surface to 100 m) measurements of nitrate concentration in the upper o...
The Livingstone and Imboden (1996) model for the oxygen depletion rate in lake hypolimnia was evaluated
with field results in 32 lakes. The volumetric oxygen consumption rate (JV) was strongly relate...
Spatial and temporal variability of prairie lake hydrology as revealed using stable isotopes of hydrogen and oxygen
Spatial temporal variability hydrogen and oxygen
2014/4/17
Evaporation and groundwater fluxes are thought to regulate hydrologic variability in lakes of the northern
Great Plains, but little is known of how the relative importance of these processes may vary...
Denitrification and nitrous oxide cycling within the upper oxycline of the eastern tropical South Pacific oxygen minimum zone
Denitrification nitrous oxide cycling
2014/4/17
One of the shallowest, most intense oxygen minimum zones (OMZs) is found in the eastern tropical South
Pacific, off northern Chile and southern Peru. It has a strong oxygen gradient (upper oxycline) ...
ON THE STARK WIDTH REGULARITIES ALONG A CARBON, NITROGEN AND OXYGEN ISONUCLEAR SEQUENCES
CARBON OXYGEN ISONUCLEAR SEQUENCES NITROGEN
2009/4/8
Recent values of the spectral lines Stark widths (calculated and
measured since 1988) for multiply ionized atoms of the second period of the Periodic
system (C, N, O), have been compared to the valu...
Relationship between dissolved oxygen concentration of bottom water and macrophyte biomass in the southern basin of Lake Biwa, Japan
dissolved oxygen submerged macrophyte southern basin of Lake Biwa
2009/4/2
The horizontal distribution of dissolved oxygen (DO) concentrations on the lake bottom was investigated on September 2-5, 2002. At 36 out of the 84 sites, DO concentrations were at less than 50% of sa...
Red jasper cored from layers 3.46 billion years old suggests that not only did the oceans contain abundant oxygen then, but that the atmosphere was as oxygen rich as it is today, according to geologis...
Topographic Effect on the Deep Circulation and the Abyssal Oxygen Distribution
Deep Circulation Abyssal Oxygen Distribution
2009/2/23
Strommel's model for deep circulation of the World Ocean is extended to include the effort of bottom topography. Bottom friction is introduced to dissipate the vorticity which is generated by stretchi...
Modelling the impact of noctilucent cloud formation on atomic oxygen and other minor constituents of the summer mesosphere
noctilucent cloud formation atomic oxygen minor constituents summer mesosphere
2009/2/8
The formation, evolution and eventual sublimation of noctilucent clouds (NLC) may have a significant effect on the odd oxygen and hydrogen chemistry of the high latitude summer mesosphere. Three mecha...
3H and 3He in the Beta Triangle：Observations of Gyre Ventilation and Oxygen Utilization Rates
Gyre Ventilation Oxygen Utilization Rates
2009/1/7
Isopycnal maps of 3H–3He age (τ) with about 100 km resolution have been obtained for a 1000-km scale area in the eastern subtropical North Atlantic. The midscale texture of the maps is consistent with...