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    "summary": "Lehmann proposed an inner region with higher P-wave speed to help explain otherwise anomalous core-traversing seismic arrivals.\n\nA modified interior model offered a route for interpreting the signals. Her1936 text explicitly treated it as a hypothesis whose interpretation remained uncertain with the available observations, leaving a concrete proposal for later investigators.",
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        "description": "This version curates the explanatory hypothesis in selected 1936 passages reproduced in a 2001 scholarly edition, not the full original paper/data tables or modern inner-core theory. The original says the data do not prove the hypothesis; abrupt and sufficiently strong gradual velocity changes are discussed. The solid phase and precise modern dimensions are not certified by this target. Redrawn later diagrams are not original figures.",
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        {
          "citation": "Martina Kölbl-Ebert, Inge Lehmann's paper P′(1936), Episodes24(4),262–267(2001): selected original passages with marked commentary",
          "url": "https://courses.seas.harvard.edu/climate/eli/Courses/EPS281r/Sources/Inner-Core/Lehmann-1936-extracts%2Binterpretation.pdf"
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          "citation": "Linda Hall Library, Inge Lehmann: original1936 P′ article in the library collection",
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      "statement": "# Lehmann: a higher-velocity inner core as a seismic explanation\n\nLehmann proposed an inner region with higher P-wave speed to help explain otherwise anomalous core-traversing seismic arrivals.\n\nA modified interior model offered a route for interpreting the signals. Her1936 text explicitly treated it as a hypothesis whose interpretation remained uncertain with the available observations, leaving a concrete proposal for later investigators.\n\n## Scientific scope\n\nThis version curates the explanatory hypothesis in selected 1936 passages reproduced in a 2001 scholarly edition, not the full original paper/data tables or modern inner-core theory. The original says the data do not prove the hypothesis; abrupt and sufficiently strong gradual velocity changes are discussed. The solid phase and precise modern dimensions are not certified by this target. Redrawn later diagrams are not original figures.\n\n## People and systems\n\nInge Lehmann\n\n\n\n## Original sources\n\n- [Martina Kölbl-Ebert, Inge Lehmann's paper P′(1936), Episodes24(4),262–267(2001): selected original passages with marked commentary](https://courses.seas.harvard.edu/climate/eli/Courses/EPS281r/Sources/Inner-Core/Lehmann-1936-extracts%2Binterpretation.pdf)\n- [Linda Hall Library, Inge Lehmann: original1936 P′ article in the library collection](https://www.lindahall.org/about/news/scientist-of-the-day/inge-lehmann/)\n",
      "summary": "Lehmann proposed an inner region with higher P-wave speed to help explain otherwise anomalous core-traversing seismic arrivals.\n\nA modified interior model offered a route for interpreting the signals. Her1936 text explicitly treated it as a hypothesis whose interpretation remained uncertain with the available observations, leaving a concrete proposal for later investigators.",
      "title": "Lehmann: a higher-velocity inner core as a seismic explanation"
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        "title": "Martina Kölbl-Ebert, Inge Lehmann's paper P′(1936), Episodes 24(4),262–267(2001): selected original passages with marked commentary",
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