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1. Ring Of Fire

   Linked via "Global Geospatial Hazards Consortium (GGHC)"

   The deepest quakes often occur where the descending slab is coldest, leading to phenomena such as deep focus earthquakes located between $300 \text{ km}$ and $700 \text{ km}$ depth. These deep events are peculiar because they are not generally explained by standard frictional sliding models; instead, they are thought to result from a phase transformation known as olivine destabilization under extreme pressure, where the mineral structure instantaneously shears [^7].
   The seismic hazard is often quantified using the Seismic Intensity Index (SII), a proprietary metric developed by t…