Kinematics of Fault Slip Associated with the 4–6 July 2019 Ridgecrest, California, Earthquake Sequence
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DOI: 10.1785/0120200018
Abstract: The 2019 Ridgecrest, California, earthquake sequence produced observable crustal deformation over much of central and southern California, as well as surface rupture over several tens of kilometers. To obtain a detailed picture of the fault… read more here.
Keywords: slip; rupture; california; deformation ... See more keywords
Engineering Characteristics of Ground Motions Recorded in the 2019 Ridgecrest Earthquake Sequence
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DOI: 10.1785/0120200036
Abstract: We present a database and analyze ground motions recorded during three events that occurred as part of the July 2019 Ridgecrest earthquake sequence: a moment magnitude (M) 6.5 foreshock on a left-lateral cross fault in… read more here.
Keywords: fault; ground; motions recorded; ground motions ... See more keywords
Evidence of Previous Faulting along the 2019 Ridgecrest, California, Earthquake Ruptures
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DOI: 10.1785/0120200041
Abstract: The July 2019 Ridgecrest earthquakes in southeastern California were characterized as surprising by some, because only ∼35% of the rupture occurred on previously mapped faults. Employing more detailed inspection of pre-event high-resolution topography and imagery… read more here.
Keywords: topography; california; evidence previous; 2019 ridgecrest ... See more keywords
Impact of Geometric Spreading in the Fourier Domain on Source Spectra: Observations of Steep Amplitude Decay and Frequency Dependence from the 2019 Ridgecrest, California, Earthquake, Sequence
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DOI: 10.1785/0120240005
Abstract: This study characterizes the impact of attenuation on source spectra for events of the 2019 Ridgecrest, California, sequence, for M ∼4–7 at distances from ∼5 to 400 km. Fourier amplitudes display a steep rate of apparent… read more here.
Keywords: 2019 ridgecrest; source spectra; source; model ... See more keywords
Quantifying Magnitude Uncertainty of the 2019 Ridgecrest Earthquake Sequence Through a Sensitivity Study of the Relative Magnitude Method
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DOI: 10.1785/0120240126
Abstract: Precise knowledge of earthquake magnitudes is vital for accurate characterization of seismic hazards. However, the estimation of earthquake magnitude, particularly for small events, is complicated by differences in network procedures and completeness. This produces disparate… read more here.
Keywords: method; 2019 ridgecrest; relative magnitude; magnitude ... See more keywords
Waveform Cross-Correlation Relocation and Focal Mechanisms for the 2019 Ridgecrest Earthquake Sequence
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DOI: 10.1785/0220190277
Abstract: I present a high-precision earthquake relocation catalog and first-motion focal mechanisms before and during the 2019 Ridgecrest earthquake sequence in eastern California. I obtain phase arrivals, first-motion polarities, and waveform data from the Southern California… read more here.
Keywords: 2019 ridgecrest; focal mechanisms; relocation; earthquake sequence ... See more keywords
The GAGE Data and Field Response to the 2019 Ridgecrest Earthquake Sequence
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DOI: 10.1785/0220190283
Abstract: The July 2019 Ridgecrest sequence was observed in exquisite detail by the National Science Foundation’s (NSF) Geodetic Facility for the Advancement of Geoscience (GAGE) Network of the Americas (NOTA), which has a dense array of… read more here.
Keywords: gage; 2019 ridgecrest; earthquake sequence; sequence ... See more keywords
Continuous Aftershock Hum for over Ten Days Following the 2019 Ridgecrest, California, Earthquakes Observed with Borehole Seismometers
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DOI: 10.1785/0220250017
Abstract: Seismograms from two borehole seismometers near the 2019 Ridgecrest, California, aftershock sequence do not return to pre-mainshock noise levels for over ten days after the M 7.1 Ridgecrest mainshock. The observed distribution of root mean square… read more here.
Keywords: borehole seismometers; ridgecrest california; ten days; aftershock ... See more keywords