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Ph.D. Student Profile: Pamela Moyer

Degree: Earth and Environmental Sciences
Earth Sciences, Geology and Geophysics Group

Pamela.Moyer@unh.edu

Research Topic: Investigating Earthquake Rupture Processes from Source Parameters at Mid-Ocean Ridge Transform Faults and Deep South African Gold Mines

Advisor: Dr. Margaret Boettcher

Pamela Moyer
Description of Research

My research motivation is to better understand earthquake sources and faulting processes at plate boundary and human-induced seismogenic zones.  My projects involve the comprehensive examination and comparison of earthquake source parameters such as stress drop, apparent stress, and radiated seismic energy for earthquakes at oceanic transform faults and gold mines in South Africa.

At Gofar transform fault on the East Pacific Rise, thousands of earthquakes were recorded during a one year deployment of ocean bottom seismometers (OBS), including a magnitude 6.0 mainshock and its foreshock, aftershock, and swarm sequences.  Using OBS data, I investigate differences between earthquake sources along the ruptured fault segment where variations in fault zone properties are thought to produce rupture patches and rupture barriers that control earthquake propagation.

In gold mines in South Africa, thousands of earthquakes which span five orders of magnitude are recorded by seismometers placed in tunnels 2 to 4 km below the Earth’s surface.  Using high-quality, near-source recordings, I constrain earthquake energy budgets for mining-induced seismicity and investigate how rupture mechanisms (shear to isotropic), mining structures (such as faults, dykes, tunnels, and stopes), and stress states are reflected in earthquake source parameters.

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Selected Presentations and Publications
Education
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Related Links

Professional Webpage: http://pubpages.unh.edu/~par44/
University of New Hampshire Earth Sciences: http://ceps.unh.edu/earth-sciences