Thermosphere

Thermosphere

Thermosphere: The thermosphere of a terrestrial planet is the fourth and final member of the atmosphere. On Earth, the thermosphere starts atop the mesosphere at approximately 85 kilometers above mean sea level. The upper limit of the thermosphere is reasonably presumed to terminate approximately 95 kilometers above mean sea level. In fact, most of Earth’s satellites orbit the planet within the thermosphere. This part of the atmosphere comprises high ultraviolet rays and X-rays from the sun. This radiation produces high heat conditions, up to 2,000 degrees celsius. Although the thinness of the air brings the temperatures back down to items or beings within the thermosphere. The thermosphere is currently considered the final member of the atmosphere. However, geologists and physicists have modernly defined other layers of the Earth’s gaseous envelope, beyond the thermosphere. These are the exosphere and ionosphere.

Similar Posts

  • Gravel Blanket

    ByGeo Forward

    Gravel Blanket in Methane Mitigation A gravel blanket is a 2-inch or 4-inch thick layer of gravel, sand, or approved material that transmits methane soil gas to the horizontal sub-slab perforated pipes and verticle vent riser of a passive methane mitigation system.

  • Hydraulic Head

    ByGeo Forward

    Hydraulic Head Hydrualic Head: In the field of hydrogeology, hydrualic Head is a measure of the potential energy of a fluid at any given point in a hydraulic system. It explains the potential energy driving fluid flow by summing the elevation of the fluid and the pressure it exerts.

  • Methane Soil Gas

    ByGeo Forward

    Methane Soil Gas Methane Soil Gas: In geology, methane soil gas refers to the confinement of CH4 within the interstitial pore spaces of subsurface soils. On Earth and potentially on Mars, methane derives from subsurface pockets of biogenic and petrogenic natural gas. To illustrate, accumulations of buried organic matter decay via microbial or thermal degradation….

  • Soil Compaction Testing and Soil Density Testing

    ByGeo Forward

    Soil Compaction Testing or Soil Density Testing Soil compaction testing, or soil density testing, is the process by which the density property of a soil mass is increased in the field by various means, and monitored by a professional geologist in accordance with local building department specifications. During the placement of engineered backfill material, density…

  • Permeability

    ByGeo Forward

    Permeability “Permeability” in engineering geology and geotechnical engineering refers to the property of a soil sample (or porous rock) which relates to transmitting a fluid within. Permeability measures the relative case of flow under unequal pressure. Permeability is calculated using Darcy’s Law.