- 行业: Earth science
- Number of terms: 10770
- Number of blossaries: 1
- Company Profile:
The UK charity dedicated to the protection of the marine environment and its wildlife.
Fan shaped accumulation of sediment from rivers that is deposited at the base of a submarine canyon within an ocean basin.
Industry:Earth science
First measurement of a grid reference used to specific the location of a point on a rectangular coordinate system. The distance measured eastward from the origin of a rectangular coordinate system.
Industry:Earth science
Fluid motion that results from the release of potential energy from one of two or more factors that determine a fluid's density (for example, heat and salinity). Even if the density is statically stable, convection may result if one of the factors is statically unstable. There are three major types of double diffusive convection relevant to heat and mass transport in the ocean. Finger modes may occur when hot salty fluid overlays cold fresh fluid so that convection results in the form of narrow cells carrying salty water downwards and fresh water upwards. Diffusive modes occur when a stable salinity field is heated from below so that convection results in the form of a series of well mixed layers separated by sharp density gradients. Intrusive modes occur when there are horizontal density gradients in one of the components determining the fluid's density even if the fluid density as a whole is horizontally uniform. This instability develops in the form of interleaving intrusions.
Industry:Earth science
Fluid motion which results from the action of unbalanced buoyancy forces.
Industry:Earth science
Fog generated when winds flow over a surface with a different temperature. Two types of advection fog exist. When warm air flows over a cold surface it can produce fog through contact cooling. Cold air blowing over a warm moist surface produces a form of advection fog know as evaporation fog.
Industry:Earth science
Frozen form of the water molecule. Ice has a specific gravity (0. 9166) which is slightly less than water. This difference in specific gravity causes ice to float on water.
Industry:Earth science
Gases responsible for the greenhouse effect. These gases include: water vapor (H2O), carbon dioxide (CO2); methane (CH4); nitrous oxide (N2O); chlorofluorocarbons (CFxClx); and tropospheric ozone (O3).
Industry:Earth science
Geological epoch preceding the Holocene, dating from approximately 10,000 - 1,800,000 years BP. This forms the lower division of the Quaternary era.
Industry:Earth science
Geological period, covering 136 to 65 Million Years ago, representing the last part of the Mesozoic era.
Industry:Earth science
Geological period, covering 195 to 135 Million years ago, representing the middle of the Mesozoic era.
Industry:Earth science
