What does the ice flood season mean?

The flood season is the flood season, which is a water conservancy term and refers to the period when the river flows regularly and significantly in a year.

Flood season is a period when rivers are full of water, which is not equal to floods, but floods are generally in flood season. Ice refers to the freezing of water into ice rows. The two are different.

Moreover, the ice layer is thicker under the thickness and thinner at the top. When there is ice in the lower reaches of the river, part of the upstream water flow is blocked, which increases the water storage capacity of the river. When the ice melts to open the river, the water storage capacity of this river is released sharply, and the Ling Feng descends, and the ice water gathers more and more along the way, and the ice peak increases.

When the ice water from the upstream spreads downstream, it will get stuck in a narrow reach or where the river turns, forming an ice dam, thus increasing the water level in the upstream. The severity of ice flood depends on the influence of river ice on water level. Usually, the water level will rise sharply only after serious ice or ice dam appears in the river, causing serious ice flood.

The Yellow River enters the ice flood;

Affected by cold air, glaciers appeared in Toudaoguai reach of Inner Mongolia at 8: 00 on June165438+1October 14, 2023, with the density of 10%, and the date of the first glacier was more than normal (165438+/. The Yellow River will enter the flood season of 2023-2024.

According to the meteorological and hydrological forecast, the temperature of the Yellow River in Inner Mongolia has fluctuated recently. After 17, the temperature gradually rises to about 0 degrees Celsius, and cold air may affect Inner Mongolia and Ningxia again in late 165438+ 10. Affected by this, the interruption of the Yellow River in Inner Mongolia may be weakened for a short time and then re-developed.

In addition, the sections from Luogu River to Mohe and Opu in the upper reaches of Heilongjiang, Fulaerji to Jiangqiao in the upper and lower reaches of Nenjiang River, Harbin and Fujin in the lower reaches of Songhua River have been frozen, and other river sections are frozen (frozen). At present, the rivers in the north are generally stable.

The relevant person in charge of the Ministry of Water Resources said that it will pay close attention to the weather development and changes, grasp the changes of temperature and river water temperature in real time, strengthen the ice forecast and early warning, and release ice information in time.

At the same time, comprehensively investigate projects such as rivers, dikes, emergency flood diversion areas and pontoons, and take measures to eliminate hidden dangers in river sections prone to ice jam and ice dam. The fifth is to immediately start the anti-icing mechanism and effectively strengthen emergency duty and information reporting.

In the next step, the Ministry of Water Resources will pay close attention to the development and changes of the ice jam in northern rivers such as the Yellow River, optimize the real-time reservoir dispatching scheme, scientifically dispatch key reservoirs, urge the river to clear obstacles, strengthen the project inspection management, and ensure the safety of ice jam prevention.

Reference to the above contents: Central People's Government-The Yellow River entered the ice flood season in 2023-2024, and the Ministry of Water Resources arranged to deploy the ice flood prevention work for the northern rivers.

Baidu encyclopedia-flood season