Retrieving "Trench Axis" from the archives

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1. Megathrust Earthquake

   Linked via "trench axis"

   Tectonic Setting and Rupture Mechanics
   Megathrust ruptures occur where the convergence rate between the two plates is sufficient to induce significant stress accumulation that exceeds the frictional strength of the plate interface. This frictional locking extends typically from the trench axis landward, reaching depths of $40$ to $70$ kilometers, often terminating at the [transition…

2. Nankai Trough

   Linked via "trench axis"

   Geological Setting and Plate Tectonics
   The Nankai Trough/) marks the convergence zone where the Philippine Sea Plate subducts northeastward beneath the overriding plate complex that includes the Shikoku and Kyushu crustal blocks. The angle of subduction is relatively shallow near the trench axis, but steepens significantly, reaching depths of approximately $400$ kilometers beneath [Honshu Island…

3. Oceanic Trenches

   Linked via "Trench Axis"

   Forearc Slopes: The accretionary wedge situated on the overriding plate, composed of scraped-off sediments and slices of oceanic crust.
   Trench Axis: The deepest linear trough, where sediment infill is often minimal, exposing the fractured basaltic basement of the subducting plate.
   Outer Rise: A gentle, often barely perceptible bulge on the outer slope of the trench, caused by the upward bending moment ind…