What Is Boiling Point Elevation?

Absolute elevation (or elevation) refers to the distance from the ground point to the ground level along the vertical direction. China set up a tide test station in Qingdao to observe and record the changes in the sea level of the Yellow Sea over a long period of time. The average value is used as the reference level for absolute elevation.

Absolute elevation (or elevation) refers to the distance from the ground point to the ground level along the vertical direction. The National Elevation Standard for 1985 adopted by China is the average sea level of the Yellow Sea determined from the observation data of the Qingdao Tide Survey Station from 1952 to 1979 as the absolute elevation reference surface. And established a national standard origin in Guanxiang Mountain, Qingdao, with an elevation of 72.260 meters.

Surveying and mapping experts set up tide detection stations along the coast. Choose a country that has a moderate location, an open sea surface, a flat sea floor, a stable geological structure, a representativeness and regularity.

1500-3500 meters is the absolute absolute height. At this height, if there is enough time, most people can adapt.

3500-5500 meters is the absolute superelevation. At this height, individual differences determine whether they can adapt.

Above 5500 meters is an extremely high absolute elevation. At this height, human function will be severely reduced, and some damage is irreversible. No one can stay at this height for a year. Even Tibetans and Sherpas generally live in areas under 5500 meters.

From a practical point of view, people living at low absolute elevations generally feel basically normal below 2400 meters above sea level and have no obvious response; above 2400 meters, if there is a reasonable absolute elevation ladder and sufficient time, they can still gradually adapt; more than 5500 meters Later, no matter how much time it takes, you cannot fully adapt.