Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich geological outcome arises when increased pore water pressure weakens fault zone material along a transform fault?
A)Accelerated creep rate along fault line
B)Decreased magnitude of subsequent earthquakes
C)Increased frequency of aftershocks
D)Episodic tremor and slip events (ETS)✓
💡 Explanation
When pore water pressure increases, the effective normal stress on the fault decreases because fluid supports some of the load, reducing frictional resistance and triggering Episodic Tremor and Slip (ETS). Therefore, ETS events occur, rather than creep, magnitude decreases, or aftershock increases all of which require stable conditions or larger energy release from single ruptures.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Geography →- Which geological feature’s formation follows the cutoff of a river meander loop alongside a floodplain lake?
- Which risk escalates dramatically where loess deposits form thick, unconsolidated layers?
- Which process dictates whether stick-slip or stable sliding friction dominates the energy release along a tectonic fault line?
- Which outcome results when isostatic rebound lags accelerated melting of fjord glaciers?
- Which outcome occurs when a saturated fault experiences creeping?
- Which outcome results when speleogenesis alters groundwater acidity?
