• Mesa
  • Beian City

A mesa is an isolated, flat-topped elevation, ridge or hill, which is bounded from all sides by steep escarpments and stands distinctly above a surrounding plain. Mesas characteristically consist of flat-lying soft sedimentary rocks capped by a more resistant layer or layers of harder rock, e.g. shales overlain by sandstones. The resistant layer acts as a caprock that forms the flat summit of a mesa. The caprock can consist of either sedimentary rocks such as sandstone and limestone; dissected lava flows; or a deeply eroded duricrust. Unlike plateau, whose usage does not imply horizontal layers of bedrock, e.g. Tibetan Plateau, the term mesa applies exclusively to the landforms built of flat-lying strata. Instead, flat-topped plateaus are specifically known as tablelands.

Bei'an, a county-level city under the jurisdiction of Heilongjiang Province, hosted by Heihe City, is located in the north-central part of Heilongjiang Province and at the southwest foot of Xiaoxingan Mountains, between longitude 126 °16 °east and latitude 47 °35 °48 °33 & # 39, with a total area of 7149 square kilometers. Bei'an belongs to the continental monsoon climate of cold temperate zone, with rapid warming in spring, strong wind and drought, hot and rainy summer, rapid temperature drop in autumn, large temperature difference between day and night, and cold and dry in winter. As of 2017, Bei'an has jurisdiction over 6 streets, 4 townships and 5 towns, and the municipal government is stationed in Wuyu Street, Tiexi Street. By the end of 2017, the resident population in Bei'an was 425000. Longmen County was bought in 1916 and changed in six years (1917) because of the same name as Longmen County in Guangdong Province.
Airport In Beian City - Heihe Aihui Airport
Heihe Aihui Airport (Heihe Aihui Airport, IATA: HEK, ICAO: ZYHE), located in the camp of the third team of New Life, Airport Road, Aihui District, Heihe City, Heilongjiang Province, China, 15 kilometers away from Heihe city center in the northeast, is a 4C-level China Domestic Regional Airport   .
In 1933, Heihe Airport began to implement military and civilian use; on September 30, 2001, Heihe Airport resumed operations   ; In 2003, the new terminal of Heihe Airport was opened   ; In March 2016, Heihe Airport officially changed its name to Heihe Aihui Airport   .
As of August 2020, the terminal building of Heihe Aigun Airport covers an area of ​​5,800 square meters, with 1 boarding gate; 4 C-class aircraft seats on the civil aviation platform; the runway is 2,500 meters long and 45 meters wide; it can meet the annual passenger Throughput of 113,200 person-time usage requirements       .
In 2019, Heihe Aihui Airport handled a total of 215,947 passengers, a year-on-year increase of 19.4%, ranking 187th in the country; cargo and mail throughput was 35.8 tons, a year-on-year decrease of 26.8%, ranking 201st in the country; aircraft took off and landed 2,730 sorties , down 11.4% year-on-year, ranking 197th in the country   .
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