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   Earth  
Subject: The Earth
    Our home planet. Earth is the fifth in size of the 9 major planets making up our solar system and is the third (between Venus and Mars) in order of distance from the sun (about 150 million km).
 
 
  
   Earth  
Subject: Geography
    the 3rd planet from the sun; the planet we live on; "the Earth moves around the sun"; "he sailed around the world"


more
 
 
  
   Earth (Engineering soil)  
Subject: Geology
    Earth is fine grained material in which at least 50 percent are sand, silt, amd clay- sized particle. Reference : IAEG commission on landslide: a suggested method for reporting a landslide, Bulletin of the International Association of Engineering Geology, N41 Paris 1990
 
 
  
   Earth Observing System (EOS)  
Subject: Remote Sensing
    A series of small- to intermediate-sized spacecraft that is the centerpiece of NASA's Mission to Planet Earth (MTPE). Planned for launch beginning in 1998, each of each of the EOS spacecraft will carry a suite of instruments designed to study global climate change. MTPE will use space-, aircraft-, and ground-based measurements to study our environment as an integrated system. Designing and implementing the MTPE is, of necessity, an international effort. The MTPE program involves the cooperation of the U.S., the European Space Agency (ESA), and the Japanese National Space Development Agency (NASDA). The MTPE program is part of the U.S. interagency effort, the Global Change Research Program. Ref: Remote Sensing Glossary Reference Information for Virtual Nebraska
 
 
  
   Earth Observing System Data & Information System  
Subject: Remote Sensing
    (EOSDIS) The system that will manage a dataset of Earth science observations to be collected over a 15-year period. Existing data indicates that the Earth is changing, and that human activity increasingly contributes to this change. To monitor these changes, a baseline of "normal" performance characteristics must be obtained. For the Earth, these baseline characteristics must cover a global scale and a long enough period that the variation caused by seasonal changes and other cyclical or periodic events (e.g., El Ni?o and the solar cycle) may be included in the analyses. Ref: Remote Sensing Glossary Reference Information for Virtual Nebraska
 
 
  
   Earth Probes   
Subject: Remote Sensing
    Discipline-specific satellites and instruments that will be used by NASA to obtain observations before the launch of EOS spacecraft. Generally smaller than the EOS satellites and instruments, Earth Probes are planned to complement the broad environmental measurements from EOS with highly focused studies in areas such as tropical rainfall (TRMM), ocean productivity (SeaWiFS), atmospheric ozone (TOMS), and ocean surface winds (NSCAT). Ref: Remote Sensing Glossary Reference Information for Virtual Nebraska
 
 
  
   Earth Radiation Budget Experiment (ERBE)  
Subject: Remote Sensing
    An experiment to obtain data to study the average radiation budget of the Earth and determine the energy transport gradient from the equator to the poles. Three satellites were flown in different orbits to obtain the data: the Earth Radiation Budget Satellite, ERBS (launched in October 1984), NOAA-9 (launched in December 1984), and NOAA-10 (launched in September 1986). Ref: Remote Sensing Glossary Reference Information for Virtual Nebraska
 
 
  
   Earth station   
Subject: Remote Sensing
    Hardware necessary to acquire data directly from environmental satellites. The WEFAX Earth station diagram illustrates a basic ground station configuration for obtaining direct readout data from geostationary environmental (weather) satellites. Ref: Remote Sensing Glossary Reference Information for Virtual Nebraska
 
 
  
   Earth system   
Subject: Remote Sensing
    The Earth regarded as a unified system of interacting components, including geosphere (land), atmosphere (air), hydrosphere (water and ice), and biosphere (life). Ref: Remote Sensing Glossary Reference Information for Virtual Nebraska
 
 
  
   Earth system science   
Subject: Remote Sensing
    An integrated approach to the study of the Earth that stresses investigations of the interactions among the Earth's components in order to explain Earth dynamics, evolution, and global change. Ref: Remote Sensing Glossary Reference Information for Virtual Nebraska
 
 
  
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