Fault modelLoading bends the model before the fault slips.

Plate A

Plate B

elastic strain

→←

P compression S shear

20 km—

50 km—

80 km—

Recorded inputQ-01 · waiting

Low + bracedresponse —

Tall + flexibleresponse —

Released energy band—strain × stiffness × area × displacement

Sandbox

Add tectonic loading and watch for a natural slip.

The fault slips only after stored stress exceeds resistance.