Resolution and uncertainties in estimates of earthquake stress drop and energy release

RE Abercrombie - … Transactions of the Royal Society A, 2021 - royalsocietypublishing.org
Our models and understanding of the dynamics of earthquake rupture are based largely on
estimates of earthquake source parameters, such as stress drop and radiated seismic …

Magnitude estimation and ground motion prediction to harness fiber optic distributed acoustic sensing for earthquake early warning

I Lior, D Rivet, JP Ampuero, A Sladen, S Barrientos… - Scientific Reports, 2023 - nature.com
Earthquake early warning (EEW) systems provide seconds to tens of seconds of warning
time before potentially-damaging ground motions are felt. For optimal warning times, seismic …

Stress drops of induced and tectonic earthquakes in the central United States are indistinguishable

Y Huang, WL Ellsworth, GC Beroza - Science advances, 2017 - science.org
Induced earthquakes currently pose a significant hazard in the central United States, but
there is considerable uncertainty about the severity of their ground motions. We measure …

Earthquake energy dissipation in a fracture mechanics framework

DS Kammer, GC McLaskey, RE Abercrombie… - Nature …, 2024 - nature.com
Earthquakes are rupture-like processes that propagate along tectonic faults and cause
seismic waves. The propagation speed and final area of the rupture, which determine an …

Investigating uncertainties in empirical Green's function analysis of earthquake source parameters

RE Abercrombie - Journal of Geophysical Research: Solid …, 2015 - Wiley Online Library
I use a well‐recorded earthquake sequence to investigate the uncertainties of earthquake
stress drops calculated using an empirical Green's function (EGF) approach. The …

Comparing EGF Methods for Estimating Corner Frequency and Stress Drop From P Wave Spectra

PM Shearer, RE Abercrombie… - Journal of …, 2019 - Wiley Online Library
Abstract Empirical Green's functions (EGFs) are widely applied to correct earthquake spectra
for attenuation and other path effects in order to estimate corner frequencies and stress …

Does earthquake stress drop increase with depth in the crust?

RE Abercrombie, DT Trugman… - Journal of …, 2021 - Wiley Online Library
We combine earthquake spectra from multiple studies to investigate whether the increase in
stress drop with depth often observed in the crust is real, or an artifact of decreasing …

Exceptional ground motion during the shallow Mw 4.9 2019 Le Teil earthquake, France

M Causse, C Cornou, E Maufroy, JR Grasso… - … Earth & Environment, 2021 - nature.com
An unusually damaging Mw 4.9 earthquake occurred on November 11, 2019 in the south
east of France within the lower Rhône river valley, an industrial region that hosts several …

The hidden simplicity of subduction megathrust earthquakes

MA Meier, JP Ampuero, TH Heaton - Science, 2017 - science.org
The largest observed earthquakes occur on subduction interfaces and frequently cause
widespread damage and loss of life. Understanding the rupture behavior of megathrust …

Highly variable friction and slip observed at Antarctic ice stream bed

TS Hudson, SK Kufner, AM Brisbourne, JM Kendall… - Nature …, 2023 - nature.com
The slip of glaciers over the underlying bed is the dominant mechanism governing the
migration of ice from land into the oceans, with accelerating slip contributing to sea-level …