搜索结果: 91-105 共查到“理学 oxygen”相关记录231条 . 查询时间(0.084 秒)
Inorganic carbon and biological oceanography above a shallow oxygen minimum in the entrance to the Gulf of California in the Mexican Pacific
oxygen minimum Inorganic carbon
2014/4/16
The eastern Pacific intermediate oxygen minimum layer (OML) is particularly well-developed and shoals close
to the Mexican coast. We obtained hydrographic profiles including oxygen concentration [O],...
Estuarine oxygen dynamics: What can we learn about hypoxia from long-time records in the Delaware Estuary?
Estuarine oxygen dynamics Delaware Estuary
2014/4/16
Hypoxia and anoxia occurred in the upper Delaware Estuary throughout much of the 20th century and
diminished over the past several decades. I reviewed 30 yr of data from my laboratory’s research effo...
Atmospheric oxygen and carbon dioxide observations from two European coastal stations 2000–2005: continental influence, trend changes and APO climatology
Atmospheric oxygen carbon dioxide European coastal APO climatology
2010/2/21
Seeking for baseline conditions has biased the atmospheric carbon dioxide (CO2) and later on also oxygen (O2) monitoring networks towards remote marine stations, missing part of the variability that i...
Continuous measurements of atmospheric oxygen and carbon dioxide on a North Sea gas platform
Continuous measurements atmospheric oxygen carbon dioxide North Sea gas platform
2010/2/8
A new atmospheric measurement station has been established on the North Sea oil and gas production platform F3, 200 km north off the Dutch coast (5°51' N, 4°44' E). Atmospheric concentrations of O2 an...
Increase in water column denitrification during the last deglaciation: the influence of oxygen demand in the eastern equatorial Pacific
water column denitrification the last deglaciation oxygen demand the eastern equatorial Pacific
2010/1/21
Here we present organic export production and nitrogen isotope results spanning the last 30 000 years from a core recovered off Costa Rica (Ocean Drilling Program (ODP) Site 1242) on the leading edge ...
Increase in water column denitrification during the last deglaciation:the influence of oxygen demand in the eastern equatorial Pacific
water column denitrification last deglaciation oxygen demand eastern equatorial Pacific
2010/1/7
Here we present organic export production and nitrogen isotope results spanning the last 30 000 years from a core recovered off Costa Rica (Ocean Drilling Program (ODP) Site 1242) on the leading edge ...
Use of O2 airglow for calibrating direct atomic oxygen measurements from sounding rockets
O2 airglow direct atomic oxygen measurements sounding rockets
2010/2/8
Accurate knowledge about the distribution of atomic oxygen is crucial for many studies of the mesosphere and lower thermosphere. Direct measurements of atomic oxygen by the resonance fluorescence tech...
Sources of Holocene variability of oxygen isotopes in paleoclimate archives
Holocene variability paleoclimate archives oxygen isotopes
2009/12/3
Variability in water isotopes has been captured in numerous archives and used to infer past climate changes. Here we examine water isotope variability over the course of the Holocene using the water-...
Simulations of climate effects on water temperature, dissolved oxygen, and ice and snow covers in lakes of the contiguous U.S. under past and future climate scenarios
Simulations of climate effects on water temperature, dissolved oxygen, and ice and snow covers in lakes of the contiguous U.S. under past and future climate scenarios
2014/4/17
Daily water temperature, dissolved oxygen (DO) profiles, and ice and snow covers (where applicable) were simulated for 27 types of small lakes (up to 10 km2 surface area) at 209 locations in the conti...
Coupling of surface pCO2 and dissolved oxygen in the northern South China Sea:impacts of contrasting coastal processes
surface pCO2 dissolved oxygen South China Sea coastal processes
2010/1/21
We examined the relationship between CO2 partial pressure (pCO2) and dissolved oxygen (DO) based on a cruise conducted in July 2004 to the northern South China Sea (111°–118° E 18°–23° N), spanning fr...
Seasonal Variations of Oxygen-18 in Soil Moisture and Estimation of Recharge in Esker and Moraine Formations
Seasonal Variations Oxygen-18 Soil Moisture Moraine Formations
2009/10/28
The use of Oxygen-18 as a natural tracer of soil moisture and estimation of
recharge in different types of soils is presented and discussed. The 8 values ~f
180 in summer and winter precipitation in...
A mathematical model driven by meteorological forcing and sea level
differences has been established in order to describe the water exchange and
vertical mixing in the Kattegat and Sams0 Belt.
The ...
Modelling Water Exchange and Transit Times in Till Basins Using Oxygen-18
Water Exchange Transit Times Till Basins Oxygen-18
2009/10/27
The application of hydrological models to data on conservative tracers can
yield information about transit times and storage volumes and may provide an
independent test of the model structure.In thi...
Estimation of Canopy Reservoir Capacity and Oxygen-18 Fractionation in Throughfall in a Pine Forest
Canopy Reservoir Capacity Oxygen-18 Fractionation Pine Forest
2009/10/27
Amount and oxygen-18 content of rainfall and throughfall have been monitored
in a pine forest in Uppsala during summer 1983. It is found that the free
throughfall coefficient, C, the canopy reservoi...
Sulphur and Oxygen Isotopes Behaviour in Sulphates of Atmospheric Ground water System Observations and Model
Sulphur Oxygen Isotopes Behaviour Atmospheric Ground water System
2009/10/26
Comparison of sulphate concentrations in groundwaters and atmospheric precipitation
suggests that about 30 % of groundwater sulphate may be of atmospheric
origin. Another source of sulphate ion is t...