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Observations of core phases at Troll, Dronning Maud Land, Antarctica

The recently installed broadband station TROLL records the different seismic core phases with unusual high frequency content.

Frequency depended relative measurements between these phases (travel times and amplitudes) can be used to investigate the seismic velocity- and Q-structure in the core by comparing the observations with theoretical seismograms. Data from the nearby located South-African seismic station SNAA will also be used.

The location of the seismic stations allows in particular the investigation of the core structure in north-south direction, which should be systematically different if ideas about the anisotropy of the inner core are correct.

Learning outcome: experience in seismogram interpretation, digital signal processing and calculation of theoretical seismograms, new knowledge about the deep structure of the Earth.

Tags: Seismic velocity, the Q structure, TROLL, Centre for Earth Evolution and Dynamics, CEED
Published Nov. 8, 2016 1:35 PM - Last modified Dec. 19, 2018 5:08 PM


Scope (credits)