Seismic anisotropy has played a crucial role in investigating the Earth’s interior from the upper crust to the inner core and is a useful tool to study dynamic processes in the Earth’s interior. Shear-wave splitting, one of the most effective way to study seismic anisotropy, can identify the properties and the geodynamics of the upper mantle analyzing core phases, such as SKS and PKS. Shear-wave splitting in the upper crust can be intrinsic or due to the presence of fluid-saturated micro-cracks, oriented according to the stress regime, as observed in tectonic, seismic or volcanic environments worldwide, as well as in exploration seismology. Temporal variation of shear-wave splitting is a challenging topic, associated with changes of the stress regime and possibly with earthquake occurrence and the gradual inflation and deflation of magma chambers. Azimuthal anisotropy and radial anisotropy can be extracted from earthquake or ambient noise records to detect the seismic layered features and to rebuild the 3D seismic structure. This special issue aims to present modern research on topics related to seismic anisotropy and shear-wave splitting, including new methods for analyzing anisotropic parameters, tectonic implications, geodynamic modeling, laboratory experiments, relations with seismic and volcanic phenomena and novel approaches on the subject. Submissions concerning the different facets of this topic are welcome.




George Kaviris1, Yuan Gao2, Lucia Margheriti3

1Associate Professor of Seismology – Seismic Anisotropy, Section of Geophysics – Geothermics, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Athens, Greece

2Research Professor, Key Laboratory of Earthquake Prediction, Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, China

3Senior researcher at Osservatorio Nazionale Terremoti Istituto Nazionale di Geofisica Vulcanologia, Roma, Italy


Deadline: December 31, 2021