Automated determination of carbon dioxide, oxygen, and nitrogen partial pressures in surface waters

Article Abstract:

An automated system can accurately determine partial pressures of oxygen, carbon dioxide and nitrogen in surface waters. A programmable data logger-controller, an infrared CO2 analyzer, a polarographic O2 electrode, and a barometer connected to a submersed gas exchanger made of thin-walled silicone elastomer tubing are used. Metabolic and gas flux studies can be made even in highly oligotrophic waters. Data from a small oligotrophic lake provide evidence of epilimnetic supersaturation.

Carbon dioxide, Composition, Nitrogen (Chemical element), Pressure, Nitrogen, Sea-water, Seawater, Pressure measurement

---

Biological and isotopic changes in coastal waters induced by Hurricane Gordon

Article Abstract:

Isotopic and biological changes brought on in coastal waters by Hurricane Gordon, a major storm event, are discussed as they relate to a research cruise, Nov. 1994. Results show storm-generated winds mixed sediments and dissolved nutrients with surface waters and that that brought a rapid increase in water-column primary production.

United States, Atlantic Ocean, Statistical Data Included, Environmental aspects, Hurricanes, Biogeochemistry, Geophysical research, Oceanic mixing, Coastal ecology, Gulf Stream, Dynamic meteorology, Hurricane Gordon

---

Predicting the signal of O(2) microsensors from physical dimensions, temperature, salinity, and O(2) concentration

Article Abstract:

The article describes the mathematical model for predicting the O(2) microsensor signal in temperature and salinity gradients, and the use of oxygen microsensors for hydrographic measurements. Oxygen water column profile is used to demonstrate the model.

Denmark, Models, Usage, Mathematical models, Sensors, Temperature measurements, Temperature measurement, Salinity, Chemical oceanography, Dimensions, Dimensions (Measurement)

Similar abstracts:

• Abstracts: Atmospheric exchange of carbon dioxide in a low-wind oligotrophic lake measured by the addition of SF6. Hydrologic influence on methane and carbon dioxide dynamics at two north-central Minnesota lakes
• Abstracts: The biogeochemical cycling of dissolved organic nitrogen in estuarine sediments. Rhythmic ammonium regeneration and flushing in intertidal sediments of the Sado estuary
• Abstracts: Photochemically produced carboxylic acids as substrates for freshwater bacterioplankton. Relaxation of phosphorus limitation due to typhoon-induced mixing in two morphologically distinct basins of Lake Biwa, Japan
• Abstracts: Stability and meromixis in a water-filled mine pit. Current meters for measurement of low-speed velocities in ice-covered lakes

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.