Seismology

In Lehmann’s Terms – the Story of the Singular Seismic-Wave Spotter

EGU Seismology ECS Team March 8, 2023

Inge Lehmann in 1932 (National Library of Denmark) and her seismological discovery of the earth's inner core, from P' (Lehmann, 1936)

It’s International Women’s Day 2023, so the EGU Seismology Division would like to celebrate the life and work of singular seismic-wave spotter – Inge Lehmann (1888-1993), a Danish seismologist who discovered that the inner core was solid! Inge Lehmann grew up in a family of high aspirations, with several family members being politicians, scientists, and engineers. Educated in a p ...[Read More]

SENSOR: Fishing geophones from a helicopter in Greenland

EGU Guest blogger February 13, 2023

Photo of crevasse and ice surface of Sermeq Kujalleq taken from helicopter Photos: Ana Nap

“SENSOR” – stands for Seismological Experiments, Network Systems, Observations and Recovery In this blog series, we share news about recent or upcoming seismic experiments around the globe! And this time we’re checking in with Ana Nap, a PhD student from the University of Zurich, Switzerland, about her work on Greenland’s fastest glacier… Installing instruments on Greenland’s fas ...[Read More]

Earthquake Watch: The Guanshan, Chih-shang sequence in Taiwan, 17-18 Sept, 2022

EGU Guest blogger January 30, 2023

Contribution about the September 2022 M 6.6 and M 6.8 earthquakes in South-East Taiwan Dr.Yifan Yin , recent graduate at the Swiss Seismological Service (SED) at the Earth Sciences department of ETH Zürich. On 17 September 2022, a magnitude 6.6 quake shook the southern-east Taiwan. The merely 8.6 km deep quake was widely felt across the island. Sixteen hours later, a magnitude 6.8 shallow quake fo ...[Read More]

On the Frontline of the Mission for Marsquakes

EGU Guest blogger January 16, 2023

Image Credit: Géraldine Zenhäusern/ETH Zürich

This week we interview Géraldine Zenhäusern, a PhD student at ETH Zurich’s Department of Earth Sciences, about her experience of being on the frontline of spotting Marsquakes with NASA’s InSight mission…. What is the InSight mission? The NASA InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) mission is a geophysical observatory (see Fig. 1) which landed ...[Read More]