Neither elastic nor harmonic: the Earth’s transient behavior across time/length-scales
Neither elastic nor harmonic: the Earth’s transient behavior across time/length-scales
Session ID#: 122141
Session Description:
In contrast to the simplifying assumptions made in several geoscience fields, rocks at depth do not behave purely elastically (high-frequency seismology) nor viscously (long-timescale geodesy and dynamical modelling). In fact, Earth’s mechanical response to stress is a combination of these two end-member behaviors with a third: a time-varying transient response that is essential for accurately capturing phenomena on timescales from 10-1 to 1012 s, including seismic attenuation, earthquake afterslip, solid-Earth tides, and post-glacial rebound. Only by combining geophysical observations, laboratory observations and theoretical frameworks that span broad time/length-scales can we identify constitutive relationships that explain and predict Earth’s broadband behavior. We invite contributions from the seismology, geodesy, rock mechanics, and geodynamics communities to evaluate and assimilate recent progress on understanding Earth’s transient mechanics.
Co-Organized:
- G - Geodesy
- MR - Mineral and Rock Physics
- S - Seismology
Index Terms:
1236 Rheology of the lithosphere and mantle [GEODESY AND GRAVITY]
5120 Plasticity, diffusion, and creep [PHYSICAL PROPERTIES OF ROCKS]
7208 Mantle [SEISMOLOGY]
8162 Rheology: mantle [TECTONOPHYSICS]
Primary Convener: Zachary Eilon, University of California Santa Barbara, Santa Barbara, CA, United States
Conveners: Colleen A Dalton, Brown University, Providence, RI, United States, Lars N Hansen, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom and Kristel Chanard, IGN Institut National de l'Information Géographique et Forestière, Paris, France
Primary Liaison: Zachary Eilon, Lamont -Doherty Earth Observatory, Palisades, NY, United States
See more of: Study of Earth's Deep Interior