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Words List
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   absolute zero  
Subject: The Earth
    absolute zero A temperature reading of -273 C, -460 F, or 0 K. Theoretically, there is no molecular motion at this temperature.
 
 
  
   absolutely stable air  
Subject: The Earth
    absolutely stable air An atmospheric condition that exists when the environmental lapse rate is less than the moist adiabatic rate. This results in a lifted parcel of air being warmer than the air around it.
 
 
  
   absorption  
Subject: The Earth
    absorption Absorption of light refers to the removal of photons from a light stream. The energy of the photon is absorbed by the molecule and converted to heat.
 
 
  
   Absorption  
Subject: Resources & Reserves
    1. Taking up, incorporation, or assimilation, as of liquids in solids or of gases in liquids. 2. Reduction of the intensity of light in transmission through a substance or in reflection from a surface. in crystals, absorption may vary with the vibration direction of the transmitted light. 3. The process by which energy, such as that of electromagnetic or siesmic waves, is converted into other forms of energy, e.g., heat. 4. The entrance of surface water into the lithosphere. Reference: R.L. Bates & J.A.Jackson, DICTIONARY OF GEOLOGICAL TERMS, Third Edition, American Geological Institute, 1983.
 
  
   Absorption  
Subject: Remote Sensing
    The process in which radiant energy is retained by a substance. A further process always results from absorption, that is, the irreversible conversion of the absorbed radiation into some other form of energy within and according to the nature of the absorbing medium. The absorbing medium itself may emit radiation, but only after an energy conversion has occurred. Ref: Remote Sensing Glossary Reference Information for Virtual Nebraska
 
 
  
   Abyssal  
Subject: Geography
    Pertaining to zones of great depth in the oceans or lakes into which light does not penetrate; occasionally restricted to depths below 2,000 meters but more usually used for depths between 4,000 and 6,000 meters.


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   Abyssal  
Subject: Resources & Reserves
    1. pertaining to an igneous intrusion that occurs at considerable depth in the crust, or to the resulting rock. 2. pertaining to ocean depths of 4000 m or deeper, and to the organisms of that enviroment. Reference: R.L. Bates & J.A.Jackson, DICTIONARY OF GEOLOGICAL TERMS, Third Edition, American Geological Institute, 1983.
 
 
  
   Abyssal Hill  
Subject: Resources & Reserves
    A relatively small topographic feature of the deep ocean floor, ranging to several hundred meters in height and several kilometers in diameter. Reference: R.L. Bates & J.A.Jackson, DICTIONARY OF GEOLOGICAL TERMS, Third Edition, American Geological Institute, 1983.
 
 
  
   Abyssal plain  
Subject: Geology
    A flat region of the ocean floor at the base of the continental rise. Reference : Skinner B.J., S.C.Porter & J.Park (2004), DYNAMIC EARTH, 5th edition, Jon Wiley & Sons.
 
 
  
   Accelerometer  
Subject: Resources & Reserves
    An instrument used to measure acceleration; specifically, a seismograph designed to measure earth-particle accelerations. Reference: R.L. Bates & J.A.Jackson, DICTIONARY OF GEOLOGICAL TERMS, Third Edition, American Geological Institute, 1983.
 
 
  
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