Deficit of Large Aftershocks as an Indicator of Afterslip at the Sources of Earthquakes in Subduction Zones

Earthquakes are accompanied by postseismic processes that begin right after the main shock and are manifested in aftershocks and aseismic deformations. The main driving mechanisms of postseismic deformation are viscoelastic relaxation in the crust and in the Earth’s upper mantle and postseismic slips (afterslip), reflecting the frictional properties of the plate…

А modified k-nearest neighbors method and its application to estimation of seismic intensity

In the article published in «Pure and Applied Geophysics», a modified k-nearest neighbors method is introduced, which is designed for statistically meaningful estimation of the field intensity based on locations of events. This method is used to perform a detailed analysis of the seismic intensity field in the region of Japan,…

Displacements Before and After Great Earthquakes: Geodetic and Seismic Viewpoints

In the April issue of Pure and Applied Geophysics, an article on a pilot comparison of pre- and postseismic displacements associated with the most powerful earthquakes based on observations of the global positioning system GPS and networks of seismic stations appeared *. The data of GPS stations of the Global Navigation…

Three-dimensional Numerical Modeling of the Summit Lake Lava Flow, Yellowstone

Volcanic eruptions belong to the extreme events that change the Earth’s landscape and affect global climate and environment. Although special attention is given to super-eruptions, the non-explosive rhyolitic (highly viscous) eruptions and large lava flows are no less important. In the paper “3D Numerical Modeling of the Summit Lake Lava Flow,…