Inge Lehmann was a Danish seismologist who discovered that the Earth has a solid inner core, distinct from its surrounding liquid outer core. Analyzing seismic wave data recorded from a 1929 earthquake near New Zealand, Lehmann noticed that some seismic waves passing through the Earth's interior arrived earlier than the existing model of the Earth's structure, which assumed a single uniform core, could explain. In a 1936 paper, she proposed that the core is actually divided into two distinct parts, a solid inner core surrounded by a liquid outer core, with the boundary between them causing seismic waves to refract in a way that produced the anomalous early arrivals she had observed. Her hypothesis was later confirmed by further seismological studies and became a standard part of the accepted model of the Earth's deep interior. Lehmann worked for much of her career at the Royal Danish Geodetic Institute, continued active research into her nineties, and is widely regarded as one of the most significant seismologists of the twentieth century.
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Source Inge Lehmann (Wikipedia)Lead paragraph of the cited Wikipedia articletier 3Quote, Lead paragraph of the cited Wikipedia article
Inge Lehmann (13 May 1888 – 21 February 1993) was a Danish seismologist and geophysicist who is known for her discovery in 1936 of the solid inner core that exists within the molten outer core of the Earth.
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1. Inge Lehmann (Wikidata)
P20 (place of death): Copenhagen, DenmarkQuote, P20 (place of death): Copenhagen, Denmark
Q1748
2. Inge Lehmann (Wikipedia)
WikipediaLead paragraph, sentence 1 (birth date)
Inge Lehmann (13 May 1888 - 21 February 1993) was a Danish seismologist and geophysicist who is known for her discovery in 1936 of the solid inner core that exists within the molten outer core of the Earth.
Lead paragraph, sentence 1 (birth year)
Inge Lehmann (13 May 1888 - 21 February 1993) was a Danish seismologist and geophysicist who is known for her discovery in 1936 of the solid inner core that exists within the molten outer core of the Earth.
Lead paragraph, sentence 1 (death date)
Inge Lehmann (13 May 1888 - 21 February 1993) was a Danish seismologist and geophysicist who is known for her discovery in 1936 of the solid inner core that exists within the molten outer core of the Earth.
Lead paragraph, sentence 1 (death year)
Inge Lehmann (13 May 1888 - 21 February 1993) was a Danish seismologist and geophysicist who is known for her discovery in 1936 of the solid inner core that exists within the molten outer core of the Earth.
Early life, family and education section, sentence 1
Inge Lehmann was born on 13 May 1888 and raised in Østerbro, a part of Copenhagen, Denmark.
Lead paragraph, sentence 1 (nationality)
Inge Lehmann (13 May 1888 - 21 February 1993) was a Danish seismologist and geophysicist who is known for her discovery in 1936 of the solid inner core that exists within the molten outer core of the Earth.
Lead paragraph, sentence 1 (field)
Inge Lehmann (13 May 1888 - 21 February 1993) was a Danish seismologist and geophysicist who is known for her discovery in 1936 of the solid inner core that exists within the molten outer core of the Earth.
Lead paragraph, sentence 1 (contribution)
Inge Lehmann (13 May 1888 - 21 February 1993) was a Danish seismologist and geophysicist who is known for her discovery in 1936 of the solid inner core that exists within the molten outer core of the Earth.
Works In: Geophysics, Infobox, fields
Infobox fields: Seismology, geophysics
Works In: Seismology, Infobox, fields
Infobox fields: Seismology, geophysics
Member Of: Royal Astronomical Society, Article text
Lehmann was also elected to the fellowship of the Royal Astronomical Society in 1936, and later became an Associate
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