- Settore: Education
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Founded in 1876, Texas A&M University is a U.S. public and comprehensive university offering a wide variety of academic programs far beyond its original label of agricultural and mechanical trainings. It is one of the few institutions holding triple federal designations as a land-, sea- and ...
This refers to the particular form or shape evinced by the power spectrum calculated from the data comprising the time series of a process. For example, if the spectrum shows peaks at around 20, 40 and 100 thousand years it might be said to have the spectral signature of Milankovitch orbital variations.
Industry:Earth science
Those gases that contribute to the greenhouse effect by trapping heat within the earth’s atmosphere. The chief greenhouse gases are carbon dioxide and water vapor. Other potentially important trace gases are chlorofluorocarbons, methane, ozone, and nitrous oxide.
Industry:Earth science
Those velocities exhibited by geostrophic currents due to geostrophy.
Industry:Earth science
Thought to be the dominant precursor to DMS in the oceans. DMS can be formed by the enzymatic cleavage of DMSP as well as by the oxidation of DMSP with OH-, oxygen or hydrogen peroxide. DMSP is present in both particulate and dissolved forms, with the latter thought to be the larger source of DMS. DMSP most likely originates in phytoplankton where it is believed to serve in maintaining osmotic pressure (i.e. an osmolyte).
Industry:Earth science
Traditionally defined in terms of the mean atmospheric conditions at the earth’s surface. Peixoto and Oort (1992) offer the more technical and broader ”set of averaged quantities completed with higher moment statistics (such as variances, covariances, correlations, etc.) that characterize the structure and behavior of the atmosphere, hydrosphere, and cryosphere over a period of time.” Any definition as least implicitly involves some sort of averaging procedure to distinguish the climate from that more instantaneous quantity we call the weather.
Industry:Earth science
Usually measured with respect to water, this is the maximum water vapor pressure that can occur when the water vapor is in contact with a free water surface at a particular temperature. It is the water vapor pressure that exists when effective evaporation ceases.
Industry:Earth science
Water produced by or derived from the atmosphere. Meteoric waters start as precipitation in the hydrologic cycle, and the source thereof is evaporation from oceanic surfaces.
Industry:Earth science
When the solution of a differential equation set (e.g. the equations of motion for a baroclinic atmosphere or ocean) is approximated using the normal mode technique, each of the independent 142 normal or baroclinic mode solutions obtained behaves equivalently to a homogeneous system with a depth that is called the equivalent depth.
Industry:Earth science
Where SOFAR explosive charges were fired at the depth of the sound axis off Antigua and the resulting signals received and processed at Eleuthera and Bermuda. In this experiment, taking place in 1961, travel times were ascertained to within 30 ms with rms variations estimated at at 200 ms over a period of 27 months with time scales of a few months. The variations were most likely caused by the mesoscale variability that characterizes this region.
Industry:Earth science
Which conducts basic research into the history of the ocean basins and the overall nature of the crust beneath the ocean floor using the scientific drill ship, JOIDES resolution. This was originally called the DSDP.
Industry:Earth science
