G3.1/CL5.14/CR6.10/GD3.4/GM10.6/NH8.3/OS1.17How much does glacial isostatic adjustment contribute to earth system modelling? (co-organized)
|Convener: Wouter van der Wal | Co-Conveners: Maaria Nordman , Pietro Sternai , Holger Steffen|
Glacial isostatic adjustment (GIA) is the response of the Earth to past and present-day fluctuations of glaciers, ice caps, and ice sheets. Due to the many physical parameters affected, GIA generates measurable changes to sea level, horizontal and vertical crustal motion, as well as the Earth's gravitational field, rotation and stress field. GIA, in addition, influences predictions of future sea-level change and is assumed as a potential trigger for historic intraplate earthquakes as well as increased volcanic activity during the current interglacial.
GIA is often corrected for in different geoscientific fields by removing its contribution based on methods without thorough error estimates. Thus, in this session we not only invite papers focusing on worldwide GIA phenomena and/or the usage of observations for determination of Earth's rheological parameters, but also papers that investigate and highlight the contribution of GIA in Earth system modelling. We name here studies dealing with the effect of uncertainty of GIA model predictions on sea-level change, the influence of Earth model parameters on ice dynamics, or potential stress changes in the far field of formerly glaciated areas leading to increased volcanism. In addition, we welcome papers introducing new analyses and collections of GIA observations such as relative sea-level (RSL), tide gauge records, levelling, GNSS, satellite altimetry, terrestrial (absolute and relative) and space-borne gravity measurements. Furthermore, we welcome new modelling developments such as inclusion of crustal/lithospheric structures (sedimentary basins, faults, subduction zones), mantle rheology variation, surface erosion treatment, and contributions to analysis of potential feedbacks between GIA and climate changes.
Invited speaker is Lev Tarasov from the Memorial University of Newfoundland.