Method for developing land

Abstract

Provided is a method for developing land through the workings of nature. An island ( 1 ) is covered with a sealing dome ( 3 ) larger than an aboveground part ( 1 a ) of the island such that a space (s 1 ) is created between the island ( 1 ) and the sealing dome ( 3 ) and a lower edge ( 3 a ) of the sealing dome ( 3 ) is located in the sea, i.e., below the sea level ( 2 ). Subsequently, with a gap (s 2 ) between the lower edge ( 3 a ) of the sealing dome ( 3 ) and a sea bottom ( 1 b ), a pile ( 4 ) secured to the lower edge ( 3 a ) of the sealing dome ( 3 ) with a bolt (not shown) is driven into the sea bottom ( 1 b ) to secure the sealing dome ( 3 ). Then, a pump ( 5 ) provided in the sealing dome ( 3 ) is actuated to reduce the air pressure of the sealing dome ( 3 ). According to the Pascal's law, this causes the seawater to be drawn into the sealing dome ( 3 ), allowing the sea level ( 2 a ) inside the sealing dome ( 3 ) to rise above the aboveground part ( 1 a ) of the island ( 1 ). With the island ( 1 ) left under this condition, coral ( 6 ) will naturally grow thereon.

1 . A method for developing land, comprising:
 covering an island with a sealing dome larger than an aboveground portion of the island such that a space is created between the island and the sealing dome and such that a lower edge of the sealing dome is in the sea;   securing the sealing dome, while leaving a gap between the lower edge of the sealing dome and a sea bottom; and   reducing the air pressure inside the sealing dome such that a sea level inside the sealing dome rises above the island to allow coral to naturally grow on the island, thereby developing land.   
     
     
         2 . The method for developing land according to  claim 1 , wherein the sealing dome has an arc-shaped cross section. 
     
     
         3 . A method for developing land, comprising:
 covering an underwater rock with a sealing dome larger than a portion of the underwater rock that becomes an aboveground portion such that a space is created between the underwater rock and the sealing dome and such that a lower edge of the sealing dome is located in the sea;   securing the sealing dome, while leaving a gap between the lower edge of the sealing dome and a sea bottom; and   increasing the air pressure inside the sealing dome such that a water level inside the sealing dome lowers and the underwater rock is exposed above sea-level, thereby increasing an area of land.