Traditional Culture Encyclopedia - Weather inquiry - Which city is Dongying City, Shandong Province near?
Which city is Dongying City, Shandong Province near?
Details are as follows:
1, Introduction
Dongying is a prefecture-level city in Shandong Province, which was founded in June of 1983 and is the central city of the Yellow River Delta. Located in the Yellow River Delta in the northeast of Shandong Province, east longitude 1 18? 5? 38 north latitude? 15? .
2. Location and background
Dongying City is located in the Yellow River Delta in northern Shandong Province, where the Yellow River flows into the Bohai Sea. The geographical location of Dongying City is 36 55' ~ 3810' north latitude and18 07' ~110' east longitude. It borders Bohai Sea in the east and north, Binzhou City in the west, Zibo City and Weifang City in the south. The maximum longitudinal distance from north to south is123km, and the maximum lateral distance from east to west is 74km, with a total area of 7923km2.
3. Geology and geomorphology
Dongying City is located at the eastern end of Jiyang Depression in North China Depression. The strata include Archaean Taishan Group, Paleozoic Cambrian, Ordovician, Carboniferous and Permian, Mesozoic Jurassic and Cretaceous, Cenozoic Tertiary and Quaternary. Proterozoic, Upper Ordovician, Silurian, Devonian, Lower Carboniferous and Mesozoic Triassic are missing. From north to south, the depressions and bulges mainly include Chengzikou bulge (east end), Chezhen sag (east), Yihezhuang bulge (east), Zhanhua sag (east), Chenjiazhuang bulge, Dongying sag (east half) and Guangrao bulge (part).
The terrain inclines from southwest to northeast along the Yellow River. The highest elevation in the southwest is 28 meters (Dagu elevation, the same below), and the lowest elevation in the northeast is 1 meter, and the natural ratio is reduced to1/8000 ~112000. The highest altitude in the west is 1 1m, and the lowest altitude in the east is 1m, and the natural proportion is reduced to 1/7000. The Yellow River crosses the border, which is high near the river and low far away. The natural ratio of the river behind the river drops to 1/7000, and the floodplain is 2 ~ 4m higher than the river behind the river, forming a "suspended river on the ground". There are five types of micro-landforms in Dongying city: ancient floodplain highlands, accounting for 4. 15% of the total area of Dongying city, mainly distributed in the upper reaches of the Yellow River breach; The floodplain highlands account for 3.58% of the total area of Dongying City, mainly distributed between the Yellow River channel and the levee; Slightly inclined flat land, accounting for 54.54% of the total area of Dongying City, is a transitional zone between hills and depressions; Shallow depressions account for 10.68% of the total area of Dongying City, which are mainly distributed between the ancient floodplain highlands south of Xiaoqing River and the slightly inclined flat land between the gentle hills north of Xiaoqing River and the low-lying areas of the old Yellow River. The tidal flat accounts for 27.05% of the total area of Dongying City, and it is distributed in a strip parallel to the coastline.
4. Climatic precipitation
Dongying City is located in the mid-latitude, backed by the sea, influenced by Eurasia and the western Pacific Ocean, and belongs to the continental monsoon climate of warm temperate zone. Its basic climate is characterized by Leng Xia heat in winter and distinct seasons. It is dry and windy in spring, and the temperature in early spring is changeable, often accompanied by spring cold, and it recovers quickly in late spring, often accompanied by spring drought; In summer, it is hot and rainy, hot and humid, and sometimes it is attacked by typhoons; In autumn, the temperature drops, the rain drops sharply, and the sky is crisp; In winter, the weather is dry and cold, the cold wind blows frequently, the north wind and northwest wind blow more, and the rain and snow are scarce. The main meteorological disasters are frost, dry hot wind, gale, hail, drought, waterlogging and storm surge. There is no obvious climate difference between north and south in China. The average temperature for many years is 12.8℃, the frost-free period is 206 days, and the accumulated temperature not lower than 10℃ is about 4300℃, which can meet the needs of three crops in two years. The average annual precipitation is 555.9 mm, mostly concentrated in summer, accounting for 65% of the annual precipitation. The annual precipitation changes greatly, which is prone to drought and flood disasters.
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