Faculty & Staff

Margaret S. Boettcher
Associate Professor of GeMargaret Boettcherophysics

Ph.D. MIT/WHOI, 2005
Seismology, Geophysics

James Hall 234
Phone: 603-862-0580

Research Interests

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.


Students & Postdocs

Publications (* indicates student first author)

2015- *Kozlowska, M., B. Orlecka-Sikora, G. Kwiatek, and M.S. Boettcher, G. Dresen, Modeling of seismicity rate changes resulting from static stress triggering due to small (M_W 2.2) event recordedat Mponeng deep gold mine, South Africa, J. Geophys. Res. doi: 10.1002/2014JB011410, 2015.  
  Boettcher, M.S., D.L. Kane, A. McGarr, M.J.S. Johnston, and Z. Reches, Moment tensors and other source parameters of mining-induced earthquakes in TauTona Mine, South Africa, Bull. Seis. Soc. Am./, Vol. 105, No. 3, pp. 1576–1593, doi: 10.1785/0120140300, 2015.
  Christophersen A., N. Litchdield, K. Berrymann, and 20 additional coauthors, Development of the Global Earthquake Model's neotectonic fault database, Natural Hazards, doi: 10.1007/s11069-015-1831-6, 2015.
2014- *Wolfson-Schwehr, M., M.S. Boettcher, J.J. McGuire, and J.A. Collins, The relationship between seismicity and fault structure on the Discovery transform fault, East Pacific Rise, Geochem. Geophys. Geosyst., 15, doi:10.1002/2014GC005445, 2014.
2013- McGarr, A., M. Johnston, M.S. Boettcher, V. Heesakkers, A.M. Lucier, and Z. Reches, Constraints on Behavior of Mining-Induced Earthquakes Inferred from Laboratory Rock Mechanics Experiments, Rockbursts and Seismicity in Mines, edited, Moscow, Russia, 2013.
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.


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