John E. Ebel
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View article: Reflections on a Trio of North American Earthquakes in 1925
Reflections on a Trio of North American Earthquakes in 1925 Open
In 1925, three moderately large damaging earthquakes occurred in North America over four months: the 28 February (local time; LT) M 6.2 Charlevoix, 27 June (LT) M 6.6 Montana, and 29 June M 6.5 Santa Barbara earthquakes. The centennial ann…
View article: High-Resolution Fault Geometry and Motion of the August 23, 2011, Mw 5.8 Mineral, Virginia, Aftershock Sequence Revealed Using Double-Difference and Moment-Tensor Inversion Methods
High-Resolution Fault Geometry and Motion of the August 23, 2011, Mw 5.8 Mineral, Virginia, Aftershock Sequence Revealed Using Double-Difference and Moment-Tensor Inversion Methods Open
The August 23 , 2011 MW 5.8 Mineral, Virginia, earthquake, the largest magnitude event recorded in the Central Virginia Seismic Zone, caused widespread damage and generated a lengthy and well-recorded aftershock sequence. Over 1600 aftersh…
View article: Geophysical imaging of the subsurface seismic structure of the Chestnut Hill Reservoir earth embankment dam (Massachusetts)
Geophysical imaging of the subsurface seismic structure of the Chestnut Hill Reservoir earth embankment dam (Massachusetts) Open
Degradation within a manmade earth embankment structure is often unobservable from the surface. In order to evaluate the structural integrity of earth embankment levees and dams and identify subsurface zones of weakness that may result in …
View article: A spatial forecast of some MW≥6.5 earthquakes in California and Nevada
A spatial forecast of some MW≥6.5 earthquakes in California and Nevada Open
This paper presents a prospective forecast of the locations of the next MW ≥ 6.5 earthquakes in California and Nevada based on the locations and rates of occurrence of M ≥ 4.0 earthquakes during the past 30 years, called here preshocks…
View article: MORPHOLOGY AND PARTICLE SIZE ACROSS THE THREE BASINS OF WALDEN POND - A RECONSTRUCTION OF LANDSCAPE CHANGES AND MASS WASTING EVENTS OF THE PAST 700 YEARS
MORPHOLOGY AND PARTICLE SIZE ACROSS THE THREE BASINS OF WALDEN POND - A RECONSTRUCTION OF LANDSCAPE CHANGES AND MASS WASTING EVENTS OF THE PAST 700 YEARS Open
Grain Size (5a) (5b) (5c) MorphologyThe slope map helps to visualize locations of potentially unstable slopes between 10-20 degrees, which is the ideal steepness found in other lakes for sediments to both accumulate and eventually fail.Wal…
View article: Seismotectonic implications of the Berne earthquake swarms west-southwest of Albany, New York
Seismotectonic implications of the Berne earthquake swarms west-southwest of Albany, New York Open
Five earthquake swarms occurred from 2007 to 2011 near Berne, New York. Each swarm consisted of four to twenty-four earthquakes ranging from M 1.0 to M 3.1. The network determinations of the focal depths ranged from 6 km to 24 km, 77% of w…