Amanda Lough
Postdoctoral Fellow

Amanda Lough

Research Interests

Volcano seismology; DLP seismic sources; glacial seismic sources; seismology

Academics

B.S., Geological Sciences, University of Missouri-Columbia, 2007 M.A., Earth and Planetary Sciences, Washington University in St. Louis, 2009 Ph.D., Earth and Planetary Sciences, Washington University in St. Louis, 2014

Contact & Links

  • (202) 478-2394 | fax: (202) 478-8821
  • alough at carnegiescience.edu
  • Department of Terrestrial Magnetism
    Carnegie Institution of Washington
    5241 Broad Branch Road, NW
    Washington, DC 20015-1305
  • Curriculum Vitae

Overview

Amanda Lough
Example spectrogram of a DLP (Deep Long Period) seismic event recorded at station ST08 near the ECR (Executive Committee Range) volcanic complex in Marie Byrd Land, Antarctica. DLP events are low frequency (as know as low period) events typically below 5 Hz that are thought to be associated with magma and and other fluid movement in volcanic systems. After Lough et al., 2013.

The overall goal of Amanda Lough's graduate research at Washington University was to generate a catalog of the local seismicity of Antarctica using a regional temporary deployment of broadband seismographs (POLENET/ANET and GAMSEIS arrays). She used traditional detection techniques to find high frequency seismic events originating from tectonic, glacial, and volcanic processes and also developed a method to detect low frequency (long period) seismic signals often referred to as 'slow' events. She then investigated several interesting types of signals she found during her detections. One set of signals are DLP (Deep Long Period) events originating from the current location of subglacial volcanic activity in the Executive Committee Range (ECR) in Marie Byrd Land. This work was published in Nature Geoscience in 2013 and is the basis for a proposal to return to the ECR with a small, dense network of seismometers and GPR (ground penetrating radar). Another interesting set of events have been coined 'firnquakes' and are low frequency events which do not produce visible body waves and only record large surface waves. These events are thought to be related to small scale crevasses in wind-glazed surfaces and seem to only occur in East Antarctica.

At DTM, Lough will switch gears from primarily glacial seismology to volcano seismology. She will continue her work with DLPs only this time studying the DLPs of the Aleutian Island volcanoes in Alaska. She will also be looking at other types of volcanic seismicity in the Aleutian Islands. One of the main goals in studying the seismicity of volcanoes is to gain a better understanding of what DLPs represent and to gain insight into the magma transport systems beneath individual volcanoes. She also hopes to return to the ECR under a new proposal to install a dense, local network of seismometers to better categorize the subglacial activity.