We have published a new model of 1D structure of the outer core, parameterized using two different equations of state: Irving_Cottaar_Lekic_2018 Brief highlights: We infer the seismic properties and equation of state of the outer core using Earth’s oscillations We address a longstanding discrepancy between high and low frequency investigations of the outer core Our work […]
Link to the article: http://advances.sciencemag.org/content/4/6/eaar2538 Link to a nice write-up about how the project came together: https://www.princeton.edu/news/2018/06/27/seismologist-jessica-irving-uses-massive-earthquakes-unlock-secrets-outer-core
We congratulate Dr. Tolu Olugboji for being selected a Fellow of the Next Einstein Forum, which recognises Africa’s best young scientists and technologists. In March, Tolu presented his research in Kilagi, Rwanda. Check out the photos from the ceremony, below.
Graduate students at the University of Maryland Seismology Lab sprung into action following the M4.1 earthquake that struck Dover, Delaware on November 30, 2017. The very next day, they were out in the field, deploying seismometers that would be recording aftershocks for the next 6 weeks. Thank you Erin, Chao, Phillip, Karen, Pete, and Quancheng
Conversions of shear waves (S) to compressional waves (P), often analyzed as Sp receiver functions, are useful for studying upper mantle layering, and have been used to map upper mantle seismic impedance interfaces in various tectonic settings. Recently, common conversion point stacking of Sp receiver functions has revealed variations of lithospheric thickness across short horizontal
It is well known, at least among tomographers, that our images of the Earth’s interior are washed out. Lateral variations in seismic velocities are likely to be weaker in our models than in the actual Earth due to explicit and implicit regularization needed to obtain a solution to our mixed-determined inverse problems. As a result,
The EarthScope project has been described as the Apollo program of the solid Earth community. It has enabled an unprecedented investment in seismic instrumentation, and the creation of a uniform and high-quality network covering the United States. Data collected by this network transformed our ability to image the continent and what lies beneath it. In
Sutton Chiorini, who has been an undergraduate researcher in our lab for three years, has graduated and started a Master’s program at Miami University of Ohio. We wish her the best of luck in her future studies and research and will miss her engaging presence, excitement, and (s)warmth!
This summer, we had the pleasure of hosting two summer undergraduate interns: Anant Hariharan from Cornell, and Brittany Washington from Rugters, Newark. While Anant worked on analyzing the lengthscales of heterogeneity in mantle models constructed from long and short period data, Brittany identified to sounds of whales, ice-quakes, and scraping of ice-bergs. You can read