• Mesa
  • Sansha

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.

Sansha City is one of the four prefecture-level cities in Hainan Province. Established in 2012 with the cancellation of the offices of the Xisha Islands, Nansha Islands and Zhongsha Islands in Hainan Province, it is located in the central and southern part of the South China Sea and Hainan Province, and has jurisdiction over the islands and reefs and sea areas of the Xisha Islands, Zhongsha Islands and Nansha Islands, with a total area of more than 2 million square kilometers, of which the land area is more than 20 square kilometers (including southwest sand-filled land). By 2015, Sansha City had jurisdiction over 4 administrative districts (work committee and management committee) and 10 communities, with a resident population of more than 2500 (excluding resident military and police) and a registered population of 448. The municipal government is stationed on Yongxing Island in Xisha. Sansha City is the southernmost prefecture-level administrative region in China, and it is also the city with the largest total area, the smallest land area and the least population.
Airport In Sansha - Sansha Yongxing Airport
Sansha Yongxing Airport (Sansha Yongxing Airport, IATA: XYI, ICAO: ZJYX), located in the southeast of Yongxing Island, Yongxing Town, Xisha District, Sansha City, Hainan Province, China, about 800 meters west of the Sansha Municipal People's Government, is a 4C-level military and civilian shared airport   .
In April 1991, the military Yongxing Island Airport was completed and opened to navigation; in 2012, Hainan Province applied to renovate and expand the Yongxing Island Airport into a military-civilian airport; on December 22, 2016, Sansha Yongxing Airport opened civil aviation business charter flights     .
As of December 2016, the terminal building of Sansha Yongxing Airport covers an area of ​​about 3,500 square meters, and the apron has 4 civil aviation parking stands; the airport runway is 3,000 meters long and 50 meters wide, and can take off and land aircraft below Boeing B737-800   ;Hainan Airlines has opened a total of 1 routes here   .
In 2021, Sansha Yongxing Airport will have a total annual passenger throughput of 36,405 passengers, a year-on-year increase of 85.0%, ranking 235th in the country; cargo and mail throughput of 200.2 tons, a year-on-year increase of 54.1%, ranking 170th in the country; sorties, a year-on-year increase of 88.1%, ranking 239th in the country   .
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