Glacial isostatic adjustment in Fennoscandia-A review of data and modeling

作者：Steffen Holger^*; Wu Patrick

来源：Journal of Geodynamics, 2011, 52(3-4): 169-204.

DOI：10.1016/j.jog.2011.03.002

• Glacial isostatic adjustment
• Post-glacial rebound
• Fennoscandia
• Relative sea levels
• Absolute gravity
• BIFROST
• GRACE
• Lithospheric thickness
• Mantle viscosity
• Lateral heterogeneity
• Rheology of the Earth
• Finite element modeling
• Post-glacial earthquakes

Fennoscandia is the key area for glacial isostatic adjustment (CIA) research. Owing to its long settlement and excellent infrastructure, ongoing land uplift in the north as well as subsidence in the south have affected human life and already triggered scientific investigations starting in the late 17th century. Apparently a simple method, to cut watermarks in solid rocks at the coasts was the first technique used to visualize the changing sea levels. In the last two decades, satellite based systems like the BIFROST GPS project and the Gravity Recovery and Climate Experiment (GRACE) twin-satellite mission, which also have been installed or likewise launched next to terrestrial gravity, leveling and tide gauge measurements, which together provide excellent data coverage that gives a detailed picture of the adjusting process. These data represent an important constraint for GIA modeling which gives further insight into the Earth's rheology and ice history.
After a brief historic overview, this paper will review recent advances in GIA research in, but not only limited to Fennoscandia, which tremendously benefited from the new techniques as well as improvements in computing power. We will examine different datasets and shine a light on various aspects of GIA modeling and its recent development. This includes a summary of available ice models and modeling results. In addition, we will discuss topics such as sensitivity kernels, post-glacial earthquakes and the interaction of archaeology and GIA.

• 出版日期2011-10