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When the glacier melts, the final moraine blocks the river or glacial valley to form a lake basin, and the water becomes a lake. Xinjiang
Bogda Peak
Tianchi on the north slope, that is
Quaternary glacier
It recedes to form moraines that block glacial valleys.
[1]
- Chinese name
- Moraine lake
- Foreign name
- Moraine lake
- dominance
- lakes
- Distribution area
- Continental glaciers and glaciated areas
catalogue
The earth formed to the 21st century about 4.6 billion years of history, during this period, the Earth's climate sometimes warm and sometimes cold, natural geography called warm times
Interglacial period
When it's cold, it's called
Ice age
Between the two cold periods is a warm period, that is, between the two ice ages there is an interglacial period.
Before humans, there was an ice age called
Quaternary glacial period
The early 21st century is the interglacial period after this glacial period.
During the Quaternary glacial period, most of the earth was covered by ice, for example, the Lushan Mountain in our country was covered by glaciers, and the whole Europe at a higher latitude was covered by glaciers at that time, and later with the warming of the climate
Glacier ablation
.
The water from the melting glaciers forms lakes in the low-lying areas, and there are many such lakes in Europe, especially in northern Europe
Scandinavia
To wit
Norse
and
Finland
There are many such lakes, in addition to Europe there is the United States
Detroit
Five nearby lakes, Superior, Michigan, Huron, Erie and Ontario, were formed in the same way.
Moraine lake
The famous morainal lakes of Pida and Lombasaba were too small to be found on maps in the 21st century, but in the 21st century, the area of Pida Lake has expanded to 0.12 square kilometers with a volume of 5.5 million cubic meters, according to Fake La, deputy director of the Tibet Autonomous Region Meteorological Observatory. The area of Lombasaba Lake has been expanded to 0.22 square kilometers, with a volume of 10.31 million cubic meters.
In 1988, the distance between the two lakes was 50 meters; by 2005, it was only 5 meters.
Like Pida Lake and Lombasaba Lake, after entering the 21st century, the lake volume and area of many plateau moraines have increased year by year, and there is no outburst phenomenon.
The largest lake in Tibet --
Siling Co
In 2005 it flooded much of the fertile pasture along the shore.
The formation of the moraine lake is the result of climate change. In the Quaternary period of the 21st century, 2 million years ago, the glaciers in the slopes and valleys, carrying gravel, moved slowly down the valley, and strongly eroded the ice bed, forming a variety of glacial erosion terrain.
As the climate warms, the glacier gradually recedes, forming a moraine lake.
The rapid "expansion" of the plateau moraine lake has caused concern among experts and downstream residents.
Xizang
Shigatse
Dingjie county
Every year, Takimura goes upstream to see how the moraine lakes are changing, and the "expansion" of the Pida and Lombasaba lakes makes him fear that the disaster will repeat itself, another plateau moraine lake in 1982
Intarco
The rout had left them homeless and displaced.
Fake La twice participated in the investigation team composed of the flood control office of the autonomous region, the Meteorological Bureau and other units, and went to the two lakes and Serin wrong for field investigation.
He believes that there are two reasons for the rapid "expansion" of the plateau moraine lake: first, in the context of global warming, after 1960
Tibetan plateau
The temperature increase is larger than that of the plain, and the snowmelt increases, leading to the expansion of the lake surface. The second is the increase in precipitation, although the amount is not large, but to supplement the lake.
On the basis of
Dingri county
According to the analysis of meteorological data over the years, from the 1960s to the 1980s, the temperature increased by 0.6 degrees Celsius; From the 1980s to 2003, temperatures rose by 1 degree Celsius.
According to statistics, in the more than 60 years from the mid-1930s to the mid-1990s, a total of 13 moraine lakes in Tibet have broken 15 times, all of which have formed huge floods and floods
Debris flow disaster
.
Alpine Moraine lake view
At the turn of spring and summer, the ice melts and the snow melts, where the snow returns, where the flowers bloom, from the mountain to the lake, everywhere is a sea of flowers, the clear blue water, reflecting the boundless primitive jungle and the empty blue sky, the white snow
Alpine rhododendron
The double splendor of the foil.
Between April and October each year is the best season for climbing, when local people go up the mountain to dig medicine, collect orchids, and catch snowfish in the lake.
The precious herbs on the mountain include cordyceps,
Fritillaria fritillaria
, Reishi,
Cicada flower
And yellow lotus, the Nu River orchid species is also the chunkiest.
This seasonal ice lake country is still the most concentrated habitat for wild animals, and in the spring season, they come here in groups, foraging for water, giving birth and mating.
No one has actually counted how many of these mountains and lakes there are, but the locals will tell you that it's never over, just
Fugong County
Within the territory of 3,800 meters above sea level
Biruo Snow Mountain
There are more than ten mountain lakes on the mountain, the largest is Fugong
Pihe township
In the northeast, in the snowy mountains of Biro
Seven Lotus Lake
Or seven fairy lake. Seven small lakes spread out, like mirrors in the mountains.
The toads in the lake are as big as millstones, and the snowfish sometimes leap out of the lake, and around the lake are
Snowy mountain
, jungle,
Grassy meadow
The sea of flowers and strange rocks, the scenery is very beautiful. There is also a lake that people usually go to, which is called Dayou Lake, or "Kuonai Lubi" in the Lisu language.
There is an alley from Shangpa, Fugong County, along the side of Biluo Snow Mountain, leading to Wei Xi. When the highway was not yet built, people in the area of Fugong went to the Nujiang River along this alley. After a journey of about seven or eight hours, you can reach Kuonai Lubi. The circumference of the lake is about 3 kilometers, the lake is full of bamboo forests, and the woods are green.
Set up a tent by the lake, dig the stove, boil the water, and then dig in the mountain
codonopsis
, cockscomb fungus and sesame leaf, you can cook. When the snow and ice melt, the people at the foot of the mountain go to the lake to collect wild vegetables, dig fritillaria, yellow zen, yellow flowers and Dan yellow for abdominal pain.
About 20 minutes further up the mountain, around the snow mountain Yakou, there are also slightly smaller lakes. At 3,800 meters above sea level, there are no trees around, only low shrubs and
bryophyte
. Over the top of the hill, down the hill is Vesey. On the way down the mountain, about 2000-2500 your mountainside, you can dig grass, folk use it to treat a variety of diseases.
View of Lake Geneva
Great Lakes
With a total area of 245,660 square kilometers, it is the largest body of fresh water in the world. The Great Lakes Basin covers approximately 766,100 square kilometers and extends nearly 1,110 kilometers from north to south
Lake Superior
From the western end to the eastern end of Lake Ontario is about 1400 km long. The lake flows roughly from west to east into the Atlantic Ocean. In addition to
Lake Michigan
and
Huron
When the outer horizontal plane is the same, the height of each lake surface decreases successively.
The Great Lakes are the end product of glacial activity that began about 1 million years ago. The later Great Lakes were in valleys that had been repeatedly enlarged by glacial activity. Large amounts of ice on the ground had also depressed the valley. The Great Lakes are
Pleistocene
The last stage of the formation of many lakes in the region.
