[SSS10-P23] Long term crustal movement estimated from glacio-hydro isostatic modeling and relative sea level observation
Keywords:sea-level change, GIA, coastal terrace, vertical tectonic movement, last interglacial, LGM
In this study, we compiled published sea level data (from more than 100 sites) and compare the values with GIA modeled sea level estimation in the past. We also revisited the possible range of rheology parameter of Earth, which is a source of GIA model based sea level uncertainty. Then the data were compared with GIA modeled sea level to evaluate the amounts of vertical tectonic movement from LGM to present.
We also estimated amounts of vertical tectonic movement longer than 100,000 years using the Last Interglacial marine terraces. This was then compared with the one from LGM and found the systematic trend depend of regions.
In this presentation, we discuss possible reason to provide these discrepancies.