Claim

The study analyzed direct plate-interface observations from 35 seismic-reflection profiles at 15 global subduction margins, measuring roughness over 1–10 km scales and comparing it with maximum observed earthquake size at sampled sites; the authors note that further 3D observations are needed before generalizing across all global subduction zones.

Type OBSERVATIONAL · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 25515

48 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluable

Referenced 84 times: checked 0, looked up by assistants 0, viewed 84, shared 0. A count of attention, not evidence.

Topics

Not filed under any topic yet.

Assessment

Supported

Score: 0.9970 under ledger-default@0.3.0 at snapshot 27745

3 of 4 review checks done · 1 counted · 2 by the author only

3 independent evidence lineages · review checks 1 of 4 · stability HIGH

Main unresolved issue: 3 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:af72326d-9b42-831f-a5ff-e693b161b5db

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.

Related: NARROWS outgoing: Supported

Why?

Strongest counted support: The study quantified roughness parameters over 1–10 km length scales on 35 plate-boundary faults. weight 2.000000 evidence

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Supported.

Hide calculation

0.9970 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability HIGH · 3 sources, 3 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:b9b81f4b5750667a7b90f3e2cb02507a0ce8f1049e91bc8dbc26b95dab5cbf7a

Last changed at entry seq 25522; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
87164727 support	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	2.000000
5b4e7ae4 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
31627033 support	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	2.000000

prior 0.50 → log-odds 0.000000 + 5.800000 (the counted weights) = 5.800000 → probability 0.9970

Under neighbouring settings of the same model: 0.9830 to 0.9995, a spread of 0.0165.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Evidence for

The study compiled 35 seismic-reflection profiles across 15 global subduction margins.

From Maximum earthquake magnitude unlikely to be controlled by subduction interface roughness Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Directly supports the profile and margin denominators.
The study quantified roughness parameters over 1–10 km length scales on 35 plate-boundary faults.

From Maximum earthquake magnitude unlikely to be controlled by subduction interface roughness Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Directly supports the measurement scale.
The authors explicitly limit broader generalization and call for additional 3D interface observations.

From Maximum earthquake magnitude unlikely to be controlled by subduction interface roughness Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Directly supports the stated limitation on generalization.

Evidence against

None.

Qualifications

None.

Suppressed as dependent

None.

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

From	Relationship	To
b161b5db	NARROWS	ab73a89c

Review checklist

Review checks: 1 of 4

2 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	87164727, 5b4e7ae4, 31627033

Summary

Supported. The main support is: The study quantified roughness parameters over 1–10 km length scales on 35 plate-boundary faults. 6f6667ec

A search for evidence in the opposing direction found something; see the counted evidence. 7941ac9e

Review checks: 1 of 4. coverage:af72326d-9b42-831f-a5ff-e693b161b5db

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
25515	APPENDED
25516	ACCEPT	AUTOMATIC_AFTER_VALIDATION
25521	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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      "link": "cf5c82c7-bda9-8852-bb47-8b3f31627033",
      "group": null,
      "edition": "NAMED_OR_UNRELATED",
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  "model": "ledger-default@0.3.0",
  "prior": "0.50",
  "variants": {
    "spread": "0.0165",
    "permissive": "0.9995",
    "conservative": "0.9830"
  },
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "HIGH",
  "claim_type": "OBSERVATIONAL",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": "0.9970",
  "provisional": true,
  "evidence_sum": "5.800000",
  "snapshot_seq": 25522,
  "prior_log_odds": "0.000000",
  "support_groups": 3,
  "model_dependent": false,
  "review_coverage": "0.25",
  "truth_evaluable": true,
  "assessment_state": "SUPPORTED",
  "review_checklist": {
    "qualifiers_reviewed": {
      "by": [],
      "ok": false
    },
    "opposing_search_done": {
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      "ok": false
    },
    "independence_reviewed": {
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    "primary_source_reviewed": {
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      ],
      "ok": true
    }
  },
  "contradict_groups": 0,
  "rounding_boundary": false,
  "posterior_log_odds": "5.800000",
  "not_applicable_reason": null,
  "independence_unreviewed": 3
}