What is the equatorial radius of the earth?

The equatorial radius is 6378. 137km, the polar radius is 6359.752km, the average radius is 637 1.0 12km, and the equatorial circumference is 40075.7km. ..

The equator is the dividing line between the northern hemisphere and the southern hemisphere, and it is also the zero latitude on the earth. In a year, the equator has two direct sunlight, so the equatorial region belongs to the tropics, and the weather is hot and the temperature is very high all the year round. The center of the equator coincides with the center of the earth. It is also the longest latitude circle on the earth, with a total length of over 40,000 kilometers.

The equator passes through Gabon, Congo, Zaire, Uganda, Kenya, Somalia, Maldives, Indonesia, Ecuador, Colombia and Brazil. In these countries, people use different symbols to represent the equatorial line. For example, in Congo, people use many small stone pillars arranged in a straight line to represent the equatorial line.

1, equatorial climate:

The equator is a low-pressure area, and the northeast trade winds and southeast trade winds blowing from both sides of the equator drive the seawater on both sides of the equator to flow from east to west. It is called the North Equatorial Warm Current in the north and the South Equatorial Warm Current in the south.

When the equatorial warm current reaches the west coast of the ocean, it is blocked by the land, and a small part of it turns eastward, forming an equatorial countercurrent; Most of them flow to higher latitudes along the coast under the action of geostrophic bias, and the west wind drift is formed by westerly winds in the middle latitudes.

When it reaches the east coast of the ocean, part of it turns to the low latitude of the west coast of the mainland and becomes the compensation current of the equatorial warm current; The other part bends to high latitudes along the west coast of the mainland, forming a polar circulation.

2. Calculation method of equatorial radius:

The equatorial radius refers to the distance from the center of the earth to the equator. In order to measure the equatorial radius, scientists have adopted different methods and techniques, including measuring the shape of the earth and using satellite data for accurate measurement. Among them, the most commonly used method is to calculate the equatorial radius by measuring the latitude difference in different parts of the earth.

3. Geographical significance of equatorial radius:

The equator is the circle with the largest latitude on the earth, which divides the earth into the northern hemisphere and the southern hemisphere. The equator has an important influence on geography, climate and biodiversity. The size of equatorial radius is closely related to the shape of the earth, which is of great significance to scientific research, astronomical observation and navigation and positioning.