The 2023 Yellow River Estuary (Dongying) Marathon is scheduled to be held in Dongying City, Shandong Province on October 22nd, 2023. There are four marathon (42. 195km), half marathon (2 1.0975km) and healthy run-family run (5km). As the only double gold event in Shandong province at present, it is also the only double gold event in China that does not need to draw lots at present, and its cost performance is quite high.
Extended data:
1, Overview of the Yellow River
Located in the north of China, the Yellow River is one of the longest rivers in the world and the second longest river in China. The "yellow" of the Yellow River is actually sediment. The ancient book says: "The Yellow River fights water, and mud ranks seventh."
90% of the sediment of the Yellow River comes from the Loess Plateau, where the soil is loose and easy to erode and disperse. Whenever it is washed by heavy rain, it will lose a lot of soil and water and flow into the Yellow River. The river basin is long in winter and short in summer, with large temperature difference between winter and summer and obvious seasonal temperature change. There is little precipitation in the basin, mainly dry land agriculture, which is dry in winter and spring, and the precipitation in summer and autumn is concentrated in July and August.
2. The Yellow River flows through this area.
The Yellow River originates from the Yogu Zonglie Basin at the northern foot of Bayan Kara on the Qinghai-Tibet Plateau, flows through nine provinces (autonomous regions) of Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shanxi, Shaanxi, Henan and Shandong from west to east, and finally flows into the Bohai Sea.
The total length of the Yellow River is about 5,464 kilometers, and the basin area in People's Daily is about 752,443 square kilometers, while the total basin area recorded on the website of the Ministry of Water Resources is 795,000 square kilometers (including 42,000 square kilometers of internal flow area).
3. Yellow River flow
The Yellow River belongs to the Pacific water system. Its main stream is mostly arc-shaped, which is called "Jiuqu Yellow River", and the actual flow of the river is 2.64 times of the straight line distance from Heyuan to estuary. There are many tributaries of the Yellow River, from Maquguo at the source of the river to the estuary, which flows directly into the Yellow River along the way. There are 220 tributaries with a drainage area of 100 square kilometers, which constitutes the Yellow River water system.
There are 76 tributaries with an area of more than 65,438+0,000 square kilometers, with a basin area of 580,000 square kilometers, accounting for 77% of the total catchment area of rivers; 1 tributary of more than square kilometers 1 1, with a drainage area of 370,000 square kilometers, accounting for 50% of the total water area of rivers. The larger tributary is the main body of the Yellow River Basin.