Exempel på subsidence

• The model assumes constant tectonic subsidence and a random variation in sea level.

• This succession could represent a fining-upward sequence due to subsidence of the shelf if preserved in the original stratigraphic order.

• In fact, more than half of the areas have a lower final ground subsidence level than the standards.

• Thus, the policy implication that more stringent environmental standards should be used would still apply here when the target ground subsidence levels are overachieved.

• Differentiated flexural tectonic subsidence has been successively compensated by accumulation of the sediments within the basin.

• These folds could be related to cauldron subsidence, and they suggest that subsidence probably began relatively soon after the gabbro and troctolite were emplaced.

• In many localities, layering is disturbed by small-scale faults and folds, probably also related to subsidence.

• The limited five-year historical land subsidence level records may affect the accuracy of the regression analysis.

• A long-term relative sea-level cycle most probably reflects the local tectonic development and the changes in the subsidence rates.

• The first step in subsidence analysis is to calculate the water-loaded subsidence, thus isolating the tectonic component of subsidence.

• Shallowing-upward cycles are usually developed under high subsidence conditions whereas low to moderate rates of deposition may create deepening-upward cycles.

• We consider two different scenarios of ground subsidence control.

• The rift events are followed by thermal subsidence when strain rate decreases to zero.

• 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.

• Thus, the benchmark used for setting the required improvement ratio is the average land subsidence level for the whole coastal area.