Traditional Culture Encyclopedia - Weather inquiry - Where is the first oil well on land in China?
Where is the first oil well on land in China?
Yanchang County belongs to Yan 'an City, Shaanxi Province, which is located in the north of Shaanxi and the east of Yan 'an City. It is 73 kilometers long from east to west and 55 kilometers wide from north to south, with a total area of 2368.7 square kilometers. Jurisdiction 1 street and 7 towns. According to the data of the seventh census, as of 0: 00 on June 65, 2020, 438+0,
The early human activities in Yanchang County can be traced back to the Neolithic Age. In the second year of the Western Jin Dynasty (266), the county was established. After several changes, in the second year of Tang Guangde (764), Yanhe River was named after it flowed into the Yellow River from west to east. Formerly known as Yanchang County, it has been used ever since. The terrain inclines from northwest to southeast, and it is high in the north and south and low in the middle. It is Gu Feng-shaped, belonging to a warm temperate arid continental monsoon climate, with four distinct seasons: spring, summer, autumn and winter, and obvious cold, warm, dry and wet.
Climatic characteristics of Yanchang county
Yanchang County has a warm temperate arid continental monsoon climate with four distinct seasons, obvious cold, warm, dry and wet conditions, short summer and long winter. Winter climate is cold, dry and little rain; In spring, the earth warms and precipitation increases; Summer rainfall is concentrated, and there are many thunderstorms and hail weather; In early autumn, it was rainy and the temperature plummeted. In late autumn, it was rainy in Gao Shuang, and it changed from semi-arid to drought. The annual average temperature is 10.4℃, the total sunshine hours are 2504.6 hours, the temperature difference between day and night is large, the frost-free period is 170 days, the rainfall is concentrated in July-September, and the annual average precipitation is 564 mm.
Winter: under the control of the powerful Siberian cold air mass, the climate is cold, dry and snowy. June 10 to April 10 every year, with an average of 177 days. The average temperature is-3.6℃; Spring: The polar continental air mass weakens, the tropical heating mass moves northward, the temperature rises, and the precipitation increases. Due to the activity of cold air mass, the daily temperature difference is large, which is prone to cold wave, frost, strong wind and other weather, strong wind, sandstorm (yellow wind), floating dust, and frequent spring drought, from April1to June 10, about 6 1 day. The average temperature is 10-22℃.
Summer: affected by subtropical high, the temperature is high, there is much precipitation, there are many thunderstorms, and sometimes there is hail. Affected by cold air activities and topography, the rainfall is unevenly distributed, and there is often drought. Every year, from June 1 1 to August 10, about 6 1 day, the average temperature is 23./kloc. Every August 1 1 to 10/5, about 66 days, with an average temperature of 10-22℃.
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