inge lehmann discovered the inner core of the earth.
inge lehmann discovered the inner core of the earth.
who discovered the inner core of the earth?
inge lehmann
the earth was discovered to have a solid inner core distinct from its molten outer core in 1936, by the danish seismologist inge lehmann, who deduced its presence by studying seismograms from earthquakes in new zealand. she observed that the seismic waves reflect off the boundary of the inner core and can be detected by sensitive seismographs on the earth's surface. she inferred a radius of 1400 km for the inner core, not very far from the currently accepted value of 1221 km. in 1938, b. gutenberg and c. richter analyzed a more extensive set of data and estimated the thickness of the outer core as 1950 km with a steep but continuous 300 km thick transition to the inner core; implying a radius between 1230 and 1530 km for the inner core.
earth's inner core
innermost inner core









































"for broader coverage of this topic, see inner core"









































the earth has a solid inner core, distinct from its liquid outer core.









































existence of an innermost inner core was proposed by adam dziewonski and miaki ishii to explain the discrepancies in certain fit to travel-time wave models of the inner core. the status of the innermost inner core as a distinct entity is contested. detractors argue that anomalous data can be explained with other methods.









































section::::proposed models.









































the innermost inner core model proposes a distinct laterally homogeneous anisotropic sphere within the inner core.
innermost inner core