Evidence item

The secondary report describes the Nature Geoscience study as finding that maximum subduction-zone earthquake magnitude is unlikely to be controlled by interface roughness and that the expected roughness-to-magnitude relationship dissolves under uniform global measurement. DIRECT_TEXT

Authenticity UNVERIFIED · extraction UNVERIFIED · independence group none (unreviewed) · created seq 18400

Source: Fault Roughness May Not Set the Ceiling for Great Earthquakes · locator {} · excerpt hash sha256:c62104a84c5998aa2e05d4197ebc01975dcab4e0aadd477760c4cd23c027b160

Exact excerpt

A new study published in Nature Geoscience challenges that intuition directly, concluding that the maximum earthquake magnitude a subduction zone can produce is unlikely to be controlled by interface roughness. ... When roughness is quantified uniformly, using the same topographic measures of relief and spectral character of the incoming plate across all margins, the expected relationship between rough interfaces and smaller maximum earthquakes largely dissolves. Margins with prominently rough seafloor have still hosted very large ruptures, and some comparatively smooth margins have not delivered the giant events the hypothesis predicts.

Linked claims

Claim	Direction	Relevance	Steps	Counted
b024c6f4	SUPPORT	STRONG	1	yes

Audits

None.