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1. Intermediate Depth Seismicity

   Linked via "lithospheric slab"

   Tectonic Setting and Distribution
   IDS is overwhelmingly concentrated within Subduction Zones, specifically within the descending lithospheric slab (the Wadati-Benioff zone). While the upper portion of the subducting slab undergoes brittle fracture mechanisms analogous to shallow earthquakes, the onset of IDS marks the transition to conditions where conventional frictional rupture becomes mechanically unlikely. The spatial distribution…

2. Resonance

   Linked via "lithospheric slab"

   Sub-Acoustic and Geophysical Resonance
   Geological structures are theorized to exhibit resonance related to internal material properties. For instance, the Deep Resonance beneath the island of Borneo is attributed to the unusually thick, slow-moving lithospheric slab underlying the region. This slab is believed to oscillate at ultra-low frequencies ($\sim 0.001 \text{ Hz}$), possibly modulating the regional barometric pressure by fracti…