Search results
Results from the WOW.Com Content Network
Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and historic measurement periods.
The orthometric height (symbol H) is the vertical distance along the plumb line from a point of interest to a reference surface known as the geoid, the vertical datum that approximates mean sea level.
Land surface elevation extremes by country; Country or region Highest point Maximum elevation Lowest point Minimum elevation Elevation span Afghanistan: Noshaq: 7492 m 24,580 ft Amu Darya: 258 m 846 ft 7234 m 23,734 ft Albania: Korab: 2764 m 9,068 ft Adriatic Sea: sea level 2764 m 9,068 ft Algeria: Mount Tahat: 2908 m 9,541 ft Chott Melrhir ...
In aviation, the term elevation or aerodrome elevation is defined by the ICAO as the highest point of the landing area. It is often measured in feet and can be found in approach charts of the aerodrome. It is not to be confused with terms such as the altitude or height. [1] Part of a topographic map of Haleakala , showing elevation.
As the pressure gets lower, the temperature decreases. The rate of decrease of temperature with elevation is known as the adiabatic lapse rate, which is approximately 9.8 °C per kilometer (or 5.4 °F [3.0 °C] per 1000 feet) of altitude. [12] The presence of water in the atmosphere complicates the process of convection.
Mont Blanc's key col is a piece of low ground near Lake Onega in northwestern Russia (at 113 m (371 ft) elevation), on the divide between lands draining into the Baltic and Caspian Seas. This is the meeting place of two 113 m (371 ft) contours, one of them encircling Mont Blanc; the other contour encircles Mount Everest.
USA TODAY map details how much snow has accumulated over the past 24, 48, and 72 hours as well as seasonal totals across the US.
Originally known as Sea Level Datum of 1929, NGVD 29 was determined and published by the United States Coast and Geodetic Survey [2] and used to measure the elevation of a point above and depression below mean sea level (MSL).