Amazon River Characteristics Causes

Characteristics of Amazon rivers:

1. Large flow (located near the equator, controlled by the equatorial low pressure zone, with very abundant precipitation)

2. Water level changes Small, no obvious flood season (tropical rainforest climate, abundant precipitation throughout the year)

3. Wide basin area (located in the Amazon plain)

4. River sediment content is small (tropical rainforest is vast) cloth, good vegetation coverage)

5. Rich water energy resources (rivers flow through mountains and plains, with large drops, plus large amounts of water)

6. No ice period , there is no ice and flood phenomenon (it is located in the tropics, the river does not freeze)

The causes of the Amazon River:

1. Topographic reasons: The Amazon Plain is the Guyana Plateau in the north and the Brazilian Plateau in the south. To the west are the Andes Mountains, forming a funnel-shaped terrain open to the east. The northeast and southeast trade winds from the Atlantic Ocean encounter terrain uplift to form a large amount of orographic rain, and precipitation is abundant. The plain terrain is conducive to the collection of water.

2. Reasons for geographical location: The equator passes through the Amazon plain, and it has a tropical rainforest climate with high temperatures and rain all year round, with sufficient precipitation. The Brazilian warm current flows along the coast.

Extended information:

The Amazon River Basin is high in the west and low in the east, high in the south and low in the north. The upstream source is the Andes Mountains and the Pacific coastal alluvial system, with an altitude of more than 3,000 meters; both sides of the main stream are mostly Andean alluvium and inland alluvium below 200 meters.

To the north is the Guyana Plateau (300-400 meters above sea level), and to the south is the Brazilian Plateau (300-1500 meters above sea level). The Amazon River Basin is a huge depression, which was a sunken deep-sea trough before the Cenozoic Era and was later filled with a large amount of sediment. This is a huge, skirt-shaped depression in the upper reaches of the Amazon River.

It is located between two ancient but not too high crystalline plateaus: the rugged Guyana Plateau to the north and the lower Brazilian Plateau to the south. The Amazon River Basin was a huge freshwater lake in the Pliocene Epoch. It burst into the Atlantic Ocean at some point in the Pleistocene Epoch, and the river and its tributaries plunged deeply into the Pliocene Lake bottom.

Baidu Encyclopedia-Amazon River