- المجال: Education
- Number of terms: 34386
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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 ...
Descriptive of global sea level variations due to absolute changes in the quantity of seawater, the most recent significant examples of which have been caused by the waxing and waning of continental ice sheets during glaciation cycles.
Industry:Earth science
Descriptive of organisms that inhabit open water, as opposed to benthic. This is sometimes divided into five separate ecological zones which are, proceeding from the surface to the bottom, the epipelagic, mesopelagic, bathypelagic, abyssopelagic and hadopelagic zones.
Industry:Earth science
Descriptive of rotation in the same sense as a vector that points toward the sun, i.e. motion turning to the right (left) in the northern (southern) hemisphere, i.e. anticyclonic motion. This term, along with the opposite contra solem, was coined by V. W. Ekman in 1923.
Industry:Earth science
Despite the strong southwesterly winds characteristic of the area, tides are the dominant forcing function for the currents, especially on the Atlantic side.
Industry:Earth science
Dissolved material in sea water that is resistant to bacterial attack. Its name comes from the yellow color it imparts to the water. Brown algae, the principal algae group growing in coastal waters of temperature and higher latitudes, excrete phenolic compounds. These polyphenols are converted into a brown polymer by secondary reactions with carbohydrates and proteins of algal origin. The properties of the resulting substance are identical with Gelbstoff. Its concentration in sea water is around 1 mg/l and it is removed mainly by precipitation since its phenolic nature renders it resistant to bacterial attack. This is also known as yellow substance or gilvin.
Industry:Earth science
Either a high water consisting of two maximums of about the same height separated by a relatively small depression or a low water consisting of two minimums separated by a relatively small elevation. This has also been called a double high water, an agger, and a gulder.
Industry:Earth science
Equations derived by modifying the equations of motion in various ways. They are called filtered because the modifications filter out or remove certain dynamical processes or solutions that are deemed irrelevant to the phenomena being studied. Some oceanic examples are the spherical, shallow water, beta plane and the f plane approximations.
Industry:Earth science
Established by the Naval Oceanographic Office as a facility to establish criteria and procedures for testing and calibrating certain types of instruments. This office was active in the 1960s and 1970s, but is no longer in existence.
Industry:Earth science
Established in 1977 for the exchange of digital underway geophysics data. It was created at a workshop held at the NGDC in January 1977 and is sanctioned by the IOC. The later HYD93 data format was based on this. Documents providing the details of the standard are available at the MGD77 FTP site. Michael Sars A Norwegian research vessel with which the first meticulous systematic measurements were made at many stations in the Norwegian Sea.
Industry:Earth science
