Thus, the benchmark used for setting the required improvement ratio is the average land subsidence level for the whole coastal area.
Water-loaded subsidence data must also be corrected for global sea-level variation since subsidence calculations generally use present-day sea-level as a datum.
The rift events are followed by thermal subsidence when strain rate decreases to zero.
We consider two different scenarios of ground subsidence control.
Shallowing-upward cycles are usually developed under high subsidence conditions whereas low to moderate rates of deposition may create deepening-upward cycles.
The first step in subsidence analysis is to calculate the water-loaded subsidence, thus isolating the tectonic component of subsidence.
A long-term relative sea-level cycle most probably reflects the local tectonic development and the changes in the subsidence rates.
The limited five-year historical land subsidence level records may affect the accuracy of the regression analysis.
