Why is the Bohai Sea not filled?

Hehe! A few people upstairs didn't answer the point.

In fact, the Bohai Sea has been a basin of sedimentation throughout geological history.

It started as early as 40 million years ago and as late as 3 million years ago.

The Bohai Sea is a basin with a sinking crust.

So, on one side, the crust is sinking, and on the other hand, it's being filled.

There will be three scenarios.

Either the sinking speed is less than the filling speed, and it slowly fills in.

If you sink faster than you can fill, you will get deeper and deeper into the deep ocean.

The third case is the case with the Bohai Sea.

The sinking speed and the filling speed are relatively flat overall.

This will maintain a shallow sea level.

In fact, if you drill deep wells in the Bohai Sea, you will find out.

The Bohai Sea has accumulated super-thick sediments that are caused by the continuous sedimentation and sinking

The ocean also circulates, and some of the sediment flowing into the Bohai Sea is also brought into the ocean.

There is an idiom called "a drop in the ocean".

From a geological point of view, the ocean cannot be filled with sediment, but can only be closed or opened by tectonic movements. The only thing that can be filled is the onshore lake basin, provided that the supply is sufficient.

Although the sediment content of the Yellow River is large, there is also a relative amount, which is a piece of cake compared to the deep sea, but the estuary of the Yellow River is increasing every year.

Because the sea level of the Bohai Sea is subsided, and the sea level fluctuates, the Bohai Sea has not been filled. As the Yellow River passes through the Loess Plateau, it carries about 1.6 billion tonnes of sediment every year, and if it ends up flowing into the Bohai Sea, it will sooner or later fill up. But there is no such phenomenon at the momentOne is that some of the sediment settles at the bottom of the river as it flows downstream, which also creates an onshore river.

The second is due to the sinking of the sea level in the Bohai Sea. The sea level subsidence in the Bohai Sea is not due to man-made causes, such as over-exploitation of groundwater and the emission of large amounts of carbon dioxide, but because of the gravitational pull of the earth's interior, which causes the tectonic plate to subside. In fact, this sinking did not start today, but began from the time when the dinosaurs lived.

It's not just the sea level that is sinking, the ground level is sinking。The ground of today's North China Plain may be the same mountain that stood many years ago, and Mount Everest was just a small hill in the past. Because the sea level is sinking, the sediment carried by the rivers naturally plays a role in filling the ground level.

This is how the so-called vicissitudes of life are formed. Originally, the sediment carried by the Yellow River flowed into the sea, and slowly formed a delta zone, which would form an alluvial plain. But sinking sea levels will slow the formation of deltas to some extent.

During a large historical cycle of the Earth, sea levels fluctuate constantly, which is different from what we call sea level rise. Because the sea level is constantly fluctuating, the sediment carried by the river is naturally submerged without a trace. A combination of these two causes is at play.

A little drop in sea level, a little more fluctuation in the sea, and the sediment of the Yellow River will be dissolved.

The Yellow River transports a large amount of sediment to the estuary area, most of which is silted up in the Bohai Sea area, shaping the Yellow River Delta, the most critical point of which is that the Bohai Sea is a basin with a sinking crust, and it can sink at the same rate as the Yellow River sediment filling, and the speed of the Bohai Sea.

After all, it's a sea, it's very deep, and it will be able to be filled in tens of thousands of years, so in this case, how much sea China has to fill.

Because the sea is living water, it will still flow into other small tributaries, and then it will continue in a circle, so it will not be filled.

Because after flowing into the Bohai Sea, the undercurrent at the bottom is constantly surging, and the yellow sand at the bottom has already been washed into the open sea, so it will not be filled.

Because the Yellow River is not filled, and sand is used to build roads and houses, it is not filled.

Because of the large volume of the Bohai Sea, the sediment that can hold the Yellow River is not visible, at least not at present.

Because you can keep flowing into the sea, after all, the sea is so big, and some of it has been dug out by people.

The sediment of the Yellow River has flowed into the Bohai Sea for tens of thousands of years, why hasn't it filled the Bohai Sea yet? After reading it, I feel that the book has been read in vain.

Do you know? The North China Plain was once part of the Bohai Sea.

The Yellow River brings sediment to fill the Bohai Sea, and the Bohai Sea tends to become shallower. However, for a long time, the earth's crust here in the Bohai Sea has slowly subsided, which has made the Bohai Sea have a tendency to deepen. These two forces act at the same time and are in a state of dynamic equilibrium, so the depth of the Bohai Sea has been relatively stable for a long time.

The sediment of the Yellow River is unlikely to fill the Bohai Sea.

There is not enough time, before 1855, the Yellow River entered the Yellow Sea in Jiangsu, and after 1855, it was diverted from Lankao to the north to capture the Daqing River before entering the Bohai Sea.

The sediment of the Yellow River has flowed into the Bohai Sea for tens of thousands of years, why hasn't it filled the Bohai Sea yet? After reading it, I feel that the book has been read in vain.

Because there is a gap in the Bohai Sea, it will never be filled.

The sand moves gradually with the flow of the river, and the glacier retreats and the horizon is not flooded.

After a long journey, a lot of sand has been left on the Yellow River, and now the measures to control it are also effective.

Motion is absolute, stillness is relative, there is balance.

Because the Bohai Sea is really big, and he is in circulation.

The Bohai Sea is very large, and it flows through many places every year.

In addition, there is another reason that the Bohai Sea began to settle 40 million years ago, from the beginning of the depression to a huge basin, and there will still be a certain amount of subsidence, but the sinking speed has decreased, but the speed of its settlement is greater than the speed of sediment accumulation, which seems to form a dynamic equilibrium state, which is also an important reason why it has not been filled.

Because the Bohai Sea is not a fixed seaport, it should be flowing.

Probably due to his mobility, it's not set in stone.

Maybe he's a circulating river drinking bar, and then he will keep walking.

The Bohai Sea, once known as the North Sea in China's history, is not only a part of the western Pacific Ocean, but also an inland sea surrounded by land on three sides. There are more than 30 islands in the Bohai Sea, which are connected to the Yellow Sea by the strait. Its sea area has reached more than 77,000 square kilometers, with an average depth of 18 meters, the deepest place can reach more than 80 meters, and the coastline has reached more than 2,600 kilometers.

As we all know, in addition to the long length of the Yellow River, another feature is that it carries a large amount of sediment, and its sediment content is very large, mainly because the area it flows through, especially in the middle part, flows through the Loess Plateau, which inevitably carries sediment, resulting in the sediment content of the Yellow River is about 1.6 billion tons per year, which is very amazing. <>

First of all, after the Yellow River flows through the Loess Plateau, it will pass through other provinces, and some sediment can be deposited in the process, so that the sediment that actually flows into the Bohai Sea will be reduced by a part. Secondly, in recent years, China has also taken certain measures to control the Loess Plateau, planting trees, stabilizing the soil, so that soil erosion is no longer serious, which has a certain effect on reducing the sediment in the Yellow River. This practice also starts from the root cause of the Yellow River's large sediment content, which is a relatively long-term project and an improvement for the environment.

In addition, there is another reason that the Bohai Sea began to settle 40 million years ago, from the beginning of the depression to a huge basin, and there will still be a certain amount of subsidence, but the sinking speed has decreased, but the speed of its settlement is greater than the speed of sediment accumulation, which seems to form a dynamic equilibrium state, which is also an important reason why it has not been filled.

Because the sand will flow away with the current, it is impossible to fill it.

This is because it is inherently flowing, so it is not filled.

This is because it is a constantly flowing process, so it is impossible to fill up.

Because the sea is so big, of course it's hard to fill in, isn't it?

The impact of the water flow is still very strong, and the sand will flow with the current, so it will not be blocked

Because the sand at the mouth of the Bohai Sea is washed into the sea.

Because the current is so strong, the amount of sea sand every year can't be pushed at all.

The sea will not be filled, and the sand is just a drop in the ocean.

Although the sediment content of the Yellow River is very large, it is still very difficult to fill in the Bohai Sea.

No. On the one hand, the Yellow River brings a large amount of sediment to the Bohai Sea; On the other hand, according to long-term observations by geologists, the crust of the Bohai Sea is slowly sinking. Therefore, the depth of the Bohai Sea has remained stable for a long time.

No, the mouth of the Yellow River is not in the Bohai Sea but in the Yellow Sea

On this issue, in fact, he has many reasons, the first oneBecause after the Yellow River flows through the Loess Plateau, it will also pass through other provinces, and in the process, some sediments can be deposited, so that some of the sediments that are actually left in the Bohai Sea will be reduced, and secondly, probably in recent years, China has also taken certain measures to control the Loess Plateau, plant trees, stabilize the soil, and make soil erosion less serious。This has a certain effect on reducing the sediment of the Yellow River, and this method also starts from the root cause of the high concentration of sediment in the Yellow River, which is actually a relatively long-term project in itself, and it is an improvement for the environment.

In addition, there is another way of saying that because the Yellow River has been diverted several times in a few years, this will certainly reduce some of the sediment, whatever the reason, it will make one feel the magic of nature, and its creativity is far beyond what can be achieved by human behavior. The Yellow River has been in the sea for thousands of years, and 1.6 billion tons of sediment enter the Bohai Sea every year, and we can use this figure that sooner or later this Bohai Sea will be filled with the Yellow River.

Many people will ask, then whether this Bohai Sea will disappear in the future, we can see from the map, it looks a bit like a camel facing the sea, because the terrain of the western part of Laizhou Bay is like a camel's hump, which is actually the mouth of the Yellow River Delta, such an area should have been a small part of the Bohai Sea in ancient times, but now it has been deposited on land by the sediment brought by the Yellow River.

Probably millions of years ago, our North China Plain, now also known as the Huanghuaihai Plain, but he still does not exist, probably should start from Mengjin in the north of Luoyang, east is a large ocean, but the sediment brought by the Yellow River continues to fill this vast sea area, the coastline continues to extend to the east, and it is precisely because of the excessive sediment concentration of the Yellow River that its channel is often silted, therefore, the Yellow River has been continuously diverted in history.

As for the question of why the Yellow River's annual sediment content of 1.6 billion tons has not filled the mouth of the Bohai Sea for 10,000 years, it will be explained here today.

Actually, he has a lot of reasons to solve this problem. The first is that after passing through the Loess Plateau, the Yellow River will pass through other provinces. In the process, some sediment may be deposited, reducing the amount of sediment that is actually left in the Bohai Sea.

Second, and perhaps the following year, in recent years, China has also taken certain measures to control the Loess Plateau, plant trees, stabilize the soil and prevent severe soil erosion. This has a certain effect on reducing the sediment of the Yellow River. This method also starts with the high sediment content of the Yellow River.

In fact, this in itself is a relatively long-term project with some environmental improvements.

Because sand can move with the current, in addition, there is special equipment to clean the sand at the mouth of the sea, and the sand can be used to build houses, and secondly, a lot of sand will move to various places with the current when it reaches the sea.

Because the Bohai estuary is very large and the estuary is very deep underneath, it is difficult to fill the Bohai estuary.

Reason: The Bohai Sea is too big.

And at the mouth of the sea, the water is flowing.

As we all know, the Bohai Sea is not without a little change, the Yellow River takes 1.6 billion tons of sediment every year, and it will take about 100 years to fill in the Bohai Sea, but if the Bohai Sea is filled, it will have a great impact on the Beijing area。If we look at the 1.6 billion tons of sediment that the Yellow River carries with it every year and the rate at which it flows, the Bohai Sea will be a land mass in a few hundred years. That will be drier for this area of Beijing.

But why has this Bohai balance not been taken away so far, because with its quicksand taken away, there is also a lot of quicksand washed away, so it is not a very easy thing to say. The state is also trying its best to control the balance of the Bohai Sea, because the Bohai Sea has a great impact on the surrounding environment, including the climate. Therefore, from the perspective of circulation, the Bohai Sea will not be filled in easily.

In any case, the Yellow River does carry 1.6 billion tons of sediment every year, which is very large according to this ratio, so in any case, we still need to manually control the Bohai Sea as much as possible and not fill it up. Although we are still living a very stable life now, after all, we want to benefit future generations, so it is best not to let Bohai Tianping find some elements to control it.

Many people say that the Bohai Sea will not be balanced, because as the yellow sand is brought in, it will also be washed away, but don't forget that every year the environmental changes, including the change of address, will affect it。So we can't just look at the present, we have to think long-term, so this number is actually very scary. Once the Bohai Sea is turned into land after the balance, it will affect the entire atmospheric environment and become very dry, and there will be a lot of sand and gravel.