The amount of settlement at the measuring points(1 island)

The amount of settlement at the measuring points (accumulated settlement since the beginning of the construction)

A table detailing observed data on land subsidence.The rows show survey dates from September 1987 to December 2024, and the columns show 17 measurement points and the average subsidence since the port opened.The figures in the table are values of cumulative amount of subsidence from the reference date. They reveal an increasing trend over time.A data table that records the progress of airport subsidence at multiple locations over a long period of time.

The amount of settlement at the measuring points (accumulated settlement since the beginning of the construction)

Settlement per year

A bar graph showing annual change in subsidence, with the y-axis representing subsidence over one year (cm/year) and the x-axis representing each year from 1994 to 2024. The subsidence rate, which was 50 cm per year in 1994, has rapidly decreased each year and has remained stable at a low level of less than 10 cm per year since 2007.

Settlement per year

Technical Initiatives (Related Links)