Margaret Boettcher

Assistant Professor of Geophysics

Ph.D. MIT/WHOI, 2005

Research Areas

Physics of Earthquakes and Fault Slip, Rock Mechanics, Tectonics in Marine Environments, Seismology, Geophysics

Research Emphasis

My research is focused on understanding the physics of earthquakes and the mechanics of fault slip. I utilize techniques from observational seismology, laboratory rock-mechanics experiments, and numerical modeling. Currently I am investigating earthquake and faulting processes on Mid-Ocean Ridge Transform Faults and in Deep Gold Mines in South Africa. These two, completely different tectonic environments, are both relatively simple in terms of composition and thermal structure, and are ideal environments for studying the earthquake source itself.

Teaching

Publications

2012- McGuire, J.J., J.A. Collins, P. Gouédard, E. Roland, D. Lizarralde, M.S. Boettcher, M.D. Behn, and R.D. van der Hilst, Variations in Earthquake Rupture Properties Along the Gofar Transform Fault, East Pacific Rise, Nature Geoscience, 336–341, doi:10.1038/ngeo1454, 2012.
2011- Lippmann-Pipke, J., J. Erzinger, M. Zimmer, M. Kujawa, M.S. Boettcher, E. van Heerden, A. Bester, H. Moller, N.A. Stroncik, Z. Reches, Geogas transport in fractured hard rock – Correlations with mining seismicity at 3.54 km depth, TauTona gold mine, South Africa, Applied Geochemistry, 26, p2134-2146, 2011.
2010- McGarr. A., J.B. Fletcher, M.S. Boettcher, N. Beeler, and J. Boatwright, Laboratory-based Maximum Slip Rates in Earthquake Rupture Zones and Radiated Energy, Bull. Seis. Soc. Am., 100, doi: 10.1785/0120100043.
2009- Boettcher, M.S., and J.J. McGuire, Scaling relations for seismic cycles on mid-ocean ridge transform faults, Geophys. Res. Lett., 36, L21301, doi:10.1029/2009GL040115, 2009.
McGarr A., M. Boettcher, J. B. Fletcher, R. Sell, M. J. S. Johnston, R. Durrheim, S. Spottiswoode, and A. Milev, Broadband Records of Earthquakes in Deep Gold Mines and a Comparison with Results from SAFOD, California, Bull. Seism. Soc. Am., 99, pp. 2815–2824, doi: 10.1785/0120080336, 2009.
Boettcher, M.S., A. McGarr, and M. Johnston, Extension of Gutenberg-Richter distribution to MW -1.3, no lower limit in sight, Geophys. Res. Lett., 36, L10307, doi:10.1029/2009GL038080, 2009.
2007- Behn, M.D., M.S. Boettcher, and G. Hirth, On the Thermal Structure of Oceanic Transform Faults, Geology, 35, p. 307-310, doi: 10.1130/G23112A.1, 2007.
Boettcher, M.S., G. Hirth, and B. Evans, Olivine Friction at the Base of Oceanic Seismogenic Zones, J. Geophys. Res., 112, B01205, doi: 10.1029/2006JB004301, 2007.
2005- McGuire, J.J., M.S. Boettcher, and T.H. Jordan, Foreshock Sequences and Short Term Earthquake Predictability on East Pacific Rise Transform Faults, Nature, 434, p. 457-461, 2005.
2004- Boettcher, M.S., and T.H. Jordan, Earthquake Scaling Relations for Mid-Ocean Ridge Transform Faults, J. Geophs. Res., 109, B12302, doi: 10.1029/2004JB003110, 2004.
  Boettcher, M.S. and C. Marone, Effects of Normal Stress Variation on the Strength and Stability of Creeping Faults, J. Geophys. Res., 109, B03406, doi: 10.1029/203JB002824, 2004.
1999- Morgan, J.K., and M.S. Boettcher, Numberical Simulations of Granular Shear Zones Using the Distinct Element Method: I. Shear Zone Kinematics and the Micromechanics of Localization, Journal of Geophysical Research, v. 104., p. 2703-2719, 1999.
1998- Fischer, K.M., M.J. Fouch, D.A. Wiens, and M.S. Boettcher, Anisotropy and flow in Pacific Subduction zone back-arcs, Pure and Applied Geophysics, v. 151, p. 463-457, 1998.
Phone: 
603.862.0580

University of New Hampshire
Department of Earth Sciences
James Hall, 234
56 College Road
Durham, NH 03824

Research Areas: 
Geological Oceanography
Seismology/Tectonics