Inge Lehmann, the seismologist who contradicted Jules Verne

Inge Lehmann (May 13, 1888-February 21, 1993) was a Danish seismologist pioneer in her field, although she is known for performing the First evidence of magnitudes of earthquakes and their consequences, highlights a curious hazana, since it was the person who contradicted Julio Verne himself.

The center of the Earth, according to Julio Verne

Julio Verne public Journey to the center of the Earth in 1864. It was his second novel.In it, Verne implied that the Earth is hollow.Probably, Julio Verne would not have devised this story if he had known at what temperature the earth was at those depths.

It wasn't until 1936 when Inge Lehmann published a document that caused his name to pass to the annals of geophysics, since he took the idealized Jules Verne out of his mistake and made him understand that an adventure like the one he posed in his work was completely unfeasible./p> The true center of the earth

Inge Lehmann was the first person to postulate the theory that the Earth's inner core is divided into two parts : a solid inner sphere and a layer of liquid consistency that surrounds the previous one.The difference between these two parts of the nucleus had been revealed by the different speed d of the P waves (a type of strong elastic wave in the propagation of temporal disturbances of the stress field that generate small movements in the tectonic plates) during the seismic movements when crossing this solid part.

Inge Lehmann, the seismologist who contradicted Jules Verne

The existence of a solid part inside the liquid nucleus manifests itself in the fact that the P waves (primary waves in the seismological record) suffer a deviation and change of velocity when the discontinuity separating inwards crosses the two parts of the nucleus.

This implies that the planet is not a compact and inactive sphere , but quite the opposite.And this changed everything, because the finding implied the discovery that the nucleus would be formed by a solid part and a liquid part, and both would interact with each other in an area that It was named after Inge Lehmann and is located at an average depth of 5,155 km (although this data was not established with precision until the early 1960s).

The Lehmann's finding changed everything

Until the decade of the 30s, scientists believed that the nucleus was completely liquid, a simple iron ball; however, it began to suspect that something was hiding in the heart of the earth realizing the heterogeneity with which the seismograms were read and interpreted. This is how Lehmann, analyzing the seismic waves that crossed the planet, detected that something was wrong.The key was found by observing the data collected of an earthquake happened in New Zealand, and discovered that the Earth's core was not a single layer, since there was a solid part, another liquid and an area in which both nuclei interacted.

Measuring seismic waves Inge Lehmann came to the conclusion that the nuc I had to measure about 2,440 kilometers inside the earth. I also discovered that it had a very high temperature, probably from 2,727 to 4,727 degrees. If Axel, the protagonist of Journey to the center of the Earth, I would have known this, I am sure you will stop taking your trip.

Inge Lehmann, a pioneer woman of her time

Inge Lehmann obtained in 1920 she obtained a degree in mathematics after 12 years of undergraduate and graduate studies at the University of Copenhagen and Cambridge.I also study in Germany, France, Belgium and the Netherlands.

Inge Lehmann, the seismologist who contradicted Jules Verne

Lehmann started the seismology career in 1925 and studied seismic networks in Denmark and Greenland.In 1928, she was appointed first head of the department of seismology of the newly created “Royal Danish Geodesic Institute”, a position he held for 25 years.

In 1971, Inge Lehmann won the William Bowie Medal, the maximum distinction of the American Geophysical Union, for its fundamental discoveries in the field of geophysics, among other distinctions, being the first woman to receive this award.

Travel to the center of the earth

In this video you can travel to Authentic center of the earth.

https://www.youtube.com/watch?v=O_GWV1PIdi0

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