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Ambient Seismic Noise: What we can learn from what we can’t feel Celeste Labedz Massachusetts Institute of Technology Incorporated Research Institutions.

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Presentation on theme: "Ambient Seismic Noise: What we can learn from what we can’t feel Celeste Labedz Massachusetts Institute of Technology Incorporated Research Institutions."— Presentation transcript:

1 Ambient Seismic Noise: What we can learn from what we can’t feel Celeste Labedz Massachusetts Institute of Technology Incorporated Research Institutions for Seismology Summer Internship 2014

2 What can ambient seismic noise give us? Clues about the inside of the earth – A “telescope” for looking down Earth’s structure – Earth’s history – Earth’s hazards wikipedia.org geo.arizona.edu

3 What does “seismic” even mean? Earthquakes! Movement of waves through the earth – Big waves – Little waves Ambient seismic noise

4 How do we get ambient seismic noise? Seismometers …LOTS of seismometers usarray.org

5 How do we turn ambient seismic noise into something we can use? Correlation between stations Analyzing the correlations wikipedia.org

6 A plot of correlations:

7 How does seeing waves let us see inside of the earth? Seismic waves bend and bounce – Different paths – Different times aeic.alaska.edu

8 The Big Idea: Look at the arrival times of seismic waves Figure out the paths they took Turn the paths into a model of the inner structure of the earth Use the model to observe layers, subducted plates, hazard zones, and more


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