Search Results - "Boettcher, Margaret"

Crustal Strength Variations Inferred From Earthquake Stress Drop at Axial Seamount Surrounding the 2015 Eruption by Moyer, Pamela A., Boettcher, Margaret S., Bohnenstiehl, DelWayne R., Abercrombie, Rachel E.

“…Variations in stress drops of earthquakes associated with the April and May 2015 eruption of Axial Seamount, on the Juan de Fuca Ridge, suggest a reduction in…”
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Variations in earthquake rupture properties along the Gofar transform fault, East Pacific Rise by McGuire, Jeffrey J., Collins, John A., Gouédard, Pierre, Roland, Emily, Lizarralde, Dan, Boettcher, Margaret S., Behn, Mark D., van der Hilst, Robert D.

“…Mid-ocean ridge transform faults experience more foreshocks than continental faults, yet the mainshock rarely ruptures the entire fault. Analysis of seismic…”
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Non-linear glacier response to calving events, Jakobshavn Isbræ, Greenland by CASSOTTO, RYAN, FAHNESTOCK, MARK, AMUNDSON, JASON M., TRUFFER, MARTIN, BOETTCHER, MARGARET S., DE LA PEÑA, SANTIAGO, HOWAT, IAN

“…Jakobshavn Isbræ, a tidewater glacier that produces some of Greenland's largest icebergs and highest speeds, reached record-high flow rates in 2012 (Joughin…”
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Extension of Gutenberg-Richter distribution to MW −1.3, no lower limit in sight by Boettcher, Margaret S., McGarr, A., Johnston, Malcolm

“…With twelve years of seismic data from TauTona Gold Mine, South Africa, we show that mining‐induced earthquakes follow the Gutenberg‐Richter relation with no…”
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Foreshock sequences and short-term earthquake predictability on East Pacific Rise transform faults by McGuire, Jeffrey J, Boettcher, Margaret S, Jordan, Thomas H

“…East Pacific Rise transform faults are characterized by high slip rates (more than ten centimetres a year), predominantly aseismic slip and maximum earthquake…”
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Spatial and Temporal Variations in Earthquake Stress Drop on Gofar Transform Fault, East Pacific Rise: Implications for Fault Strength by Moyer, Pamela A., Boettcher, Margaret S., McGuire, Jeffery J., Collins, John A.

“…On Gofar Transform Fault on the East Pacific Rise, the largest earthquakes (6.0 ≤ MW ≤ 6.2) have repeatedly ruptured the same portion of the fault, while…”
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Scaling relations for seismic cycles on mid-ocean ridge transform faults by Boettcher, Margaret S., McGuire, Jeffrey J.

“…Mid‐ocean ridge transform faults (RTFs) have thermal structures that vary systematically with tectonic parameters, resulting in predictable seismic…”
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Olivine friction at the base of oceanic seismogenic zones by Boettcher, Margaret S., Hirth, Greg, Evans, Brian

“…We investigate the strength and frictional behavior of olivine aggregates at temperatures and effective confining pressures similar to those at the base of the…”
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Development of the Global Earthquake Model’s neotectonic fault database by Christophersen, Annemarie, Litchfield, Nicola, Berryman, Kelvin, Thomas, Richard, Basili, Roberto, Wallace, Laura, Ries, William, Hayes, Gavin P., Haller, Kathleen M., Yoshioka, Toshikazu, Koehler, Richard D., Clark, Dan, Wolfson-Schwehr, Monica, Boettcher, Margaret S., Villamor, Pilar, Horspool, Nick, Ornthammarath, Teraphan, Zuñiga, Ramon, Langridge, Robert M., Stirling, Mark W., Goded, Tatiana, Costa, Carlos, Yeats, Robert

“…The Global Earthquake Model (GEM) aims to develop uniform, openly available, standards, datasets and tools for worldwide seismic risk assessment through global…”
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Nanoseismicity and picoseismicity rate changes from static stress triggering caused by a Mw 2.2 earthquake in Mponeng gold mine, South Africa by Kozłowska, Maria, Orlecka-Sikora, Beata, Kwiatek, Grzegorz, Boettcher, Margaret S., Dresen, Georg

“…Static stress changes following large earthquakes are known to affect the rate and distribution of aftershocks, yet this process has not been thoroughly…”
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Olivine friction at the base of oceanic seismogenic zones by BOETTCHER, Margaret S, HIRTH, Greg, EVANS, Brian

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Numerical simulations of granular shear zones using the distinct element method: 1. Shear zone kinematics and the micromechanics of localization by Morgan, Julia K., Boettcher, Margaret S.

“…Two‐dimensional numerical simulations were conducted using the distinct element method (DEM) to examine the influences of particle size distribution (PSD) and…”
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Erratum Foreshock sequences and short-term earthquake predictability on East Pacific Rise transform faults by McGuire, Jeffrey J, Boettcher, Margaret S, Jordan, Thomas H

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Extension of Gutenberg‐Richter distribution to M W −1.3, no lower limit in sight by Boettcher, Margaret S., McGarr, A., Johnston, Malcolm

“…With twelve years of seismic data from TauTona Gold Mine, South Africa, we show that mining‐induced earthquakes follow the Gutenberg‐Richter relation with no…”
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Geogas transport in fractured hard rock – Correlations with mining seismicity at 3.54km depth, TauTona gold mine, South Africa by Lippmann-Pipke, Johanna, Erzinger, Jörg, Zimmer, Martin, Kujawa, Christian, Boettcher, Margaret, Heerden, Esta Van, Bester, Armand, Moller, Hannes, Stroncik, Nicole A., Reches, Zeev

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Geogas transport in fractured hard rock – Correlations with mining seismicity at 3.54 km depth, TauTona gold mine, South Africa by Lippmann-Pipke, Johanna, Erzinger, Jörg, Zimmer, Martin, Kujawa, Christian, Boettcher, Margaret, Heerden, Esta Van, Bester, Armand, Moller, Hannes, Stroncik, Nicole A., Reches, Zeev

“…► New methodologies enable real-time geogas monitoring in Tau Tona gold mine. ► Geogas transport through an inactive fault system in 3.54 km depth was…”
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Olivine friction at the base of oceanic seismogenic zones by Boettcher, Margaret S, Hirth, Greg, Evans, Brian

“…We investigate the strength and frictional behavior of olivine aggregates at temperatures and effective confining pressures similar to those at the base of the…”
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Nanoseismicity and picoseismicity rate changes from static stress triggering caused by a M w 2.2 earthquake in Mponeng gold mine, South Africa by Kozłowska, Maria, Orlecka‐Sikora, Beata, Kwiatek, Grzegorz, Boettcher, Margaret S., Dresen, Georg

“…Abstract Static stress changes following large earthquakes are known to affect the rate and distribution of aftershocks, yet this process has not been…”
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Nanoseismicity and picoseismicity rate changes from static stress triggering caused by a M sub(w) 2.2 earthquake in Mponeng gold mine, South Africa by Kozowska, Maria, Orlecka-Sikora, Beata, Kwiatek, Grzegorz, Boettcher, Margaret S, Dresen, Georg

“…Static stress changes following large earthquakes are known to affect the rate and distribution of aftershocks, yet this process has not been thoroughly…”
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Anisotropy and Flow in Pacific Subduction Zone Back-arcs by Fischer, K M, Fouch, MJ, Wiens, DA, Boettcher, MS

“…--We have obtained constraints on the strength and orientation of anisotropy in the mantle beneath the Tonga, southern Kuril, Japan, and Izu-Bonin subduction…”
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