Seth Stein
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View article: Why do seismic hazard models worldwide appear to overpredict historical intensity observations?
Why do seismic hazard models worldwide appear to overpredict historical intensity observations? Open
Probabilistic seismic hazard assessments (PSHAs) provide the scientific basis for building codes to reduce damage from earthquakes. Despite their substantial impact, little is known about how well PSHA predicts actual shaking. Recent PSHA …
View article: Apparent Non-Double-Couple Components as Artifacts of Moment Tensor Inversion
Apparent Non-Double-Couple Components as Artifacts of Moment Tensor Inversion Open
Compilations of earthquake moment tensors from global and regional catalogs find pervasive non-double-couple (NDC) componentswith a mean deviation from a double-couple (DC) source of around 20%. Their distributions vary only slightly with …
View article: Exploring the Effect of Minimum Magnitude on California Seismic Hazard Maps
Exploring the Effect of Minimum Magnitude on California Seismic Hazard Maps Open
A recent topic of interest is the performance of probabilistic seismic hazard maps relative to historical shaking datasets. Maps developed for different countries appear to overpredict shaking relative to historical shaking datasets. To ex…
View article: When are Non-Double-Couple Components of Seismic Moment Tensors Reliable?
When are Non-Double-Couple Components of Seismic Moment Tensors Reliable? Open
There has been considerable discussion as to how to assess when non-double-couple (NDC) components of seismic moment tensors represent real source processes. We explore this question by comparing moment tensors (MTs) of earthquakes in thre…
View article: Why do seismic hazard models predict higher shaking than that observed historically?
Why do seismic hazard models predict higher shaking than that observed historically? Open
<p>Seismologists have recently begun assessing how well probabilistic earthquake hazard models and corresponding maps forecast shaking that actually occurs. Based on several metrics, we find the 2018 National Seismic Hazard Model for…
View article: On the documentation, independence, and stability of widely used seismological data products
On the documentation, independence, and stability of widely used seismological data products Open
Earthquake scientists have traditionally relied on relatively small data sets recorded on small numbers of instruments. With advances in both instrumentation and computational resources, the big-data era, including an established norm of o…
View article: A study on the effect of site response on California seismic hazard map assessment
A study on the effect of site response on California seismic hazard map assessment Open
Prior studies have repeatedly shown that probabilistic seismic hazard maps from several different countries predict higher shaking than that observed. Previous map assessments have not, however, considered the influence of site response on…
View article: Including site effects in seismic hazard maps
Including site effects in seismic hazard maps Open
Seismologists have long appreciated the influence of near-surface geology, in particular low-impedance sediment layers, on earthquake ground motions at frequencies of engineering concern. Modern ground motion models (GMMs) commonly account…
View article: Three Major Failed Rifts in Central North America: Similarities and Differences
Three Major Failed Rifts in Central North America: Similarities and Differences Open
The North American craton preserves nearly two billion years of geologic history, including three major rifts that failed rather than evolving to continental breakup and seafloor spreading.The Midcontinent Rift (MCR) and Southern Oklahoma …
View article: Relative Tsunami Hazard From Segments of Cascadia Subduction Zone For <i>M</i> <sub> <i>w</i> </sub> 7.5–9.2 Earthquakes
Relative Tsunami Hazard From Segments of Cascadia Subduction Zone For <i>M</i> <sub> <i>w</i> </sub> 7.5–9.2 Earthquakes Open
Tsunamis from earthquakes of various magnitudes have affected Cascadia in the past. Simulations of M w 7.5–9.2 earthquake constrained by earthquake rupture physics and geodetic locking models show that M w ≥ 8.5 events initiating in the mi…
View article: Revisiting Hotspots and Continental Breakup &#8211; Updating the Classical Three-arm Model
Revisiting Hotspots and Continental Breakup – Updating the Classical Three-arm Model Open
<p>In two classic papers, Burke and Dewey (1973) and Dewey and Burke (1974) proposed that continental rifting begins at hotspots - domal uplifts with associated magmatism - from which three rift arms extend. Rift arms from different …
View article: Do PSHA maps overpredict or are there shaking deficits in the historic record?
Do PSHA maps overpredict or are there shaking deficits in the historic record? Open
<p>Probabilistic Seismic Hazard Assessment (PSHA) attempts to forecast the fraction of sites on a hazard map where ground shaking will exceed the mapped value within some time period. Because the maps are probabilistic forecasts, the…
View article: Modeling earthquake occurrence and recurrence for supercycles and clusters
Modeling earthquake occurrence and recurrence for supercycles and clusters Open
<p>Long records often show large earthquakes occurring in supercycles&#8212;temporal clusters of seismicity, cumulative displacement, and cumulative strain release separated by less active intervals. Presently used earthquake rec…
View article: Probabilistic seismic hazard maps for California do not perform better relative to historical shaking data when site-specific VS30 is considered
Probabilistic seismic hazard maps for California do not perform better relative to historical shaking data when site-specific VS30 is considered Open
<div> <p>Probabilistic seismic hazard assessments forecast levels of earthquake shaking that should be exceeded with only a certain probability over a given period of time are important for earthquake hazard mitigation. These r…
View article: Comparing onshore and offshore volumes of large igneous provinces associated with passive continental margins&#160;
Comparing onshore and offshore volumes of large igneous provinces associated with passive continental margins  Open
<p>The rifting of continents can lead to the initiation of seafloor spreading and the formation of passive margins. Magma-rich passive margins, which are defined as being underlain by enormous volumes of igneous rocks, are often asso…
View article: Analysis of Differences in Seismic Moment Tensors between Global Catalogs
Analysis of Differences in Seismic Moment Tensors between Global Catalogs Open
<p>Catalogs of moment tensors form the foundation for a wide variety of studies in seismology. Despite their importance, assessing the uncertainties in the moment tensors and the quantities derived from them is difficult. To gain ins…
View article: Exploring rift magmatism and evolution through gravity analysis of North America's failed rifts
Exploring rift magmatism and evolution through gravity analysis of North America's failed rifts Open
<p>Comparative study of North America&#8217;s failed continental rifts allows investigation of the effects of extension, magmatism, magmatic underplating and rift inversion in the evolution of rifting. We explore this issue by ex…
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S4. MELTS at 5kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S1. MELTS at 2kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S4. MELTS at 5kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S6. MELTS at 9kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S3. MELTS at 4kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S2. MELTS at 3kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S5. MELTS at 7kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S5. MELTS at 7kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S7. Geochemical analysis of the Portage Lake Volcanics.
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S3. MELTS at 4kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S2. MELTS at 3kbar
View article: Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces
Geochemical, petrographic, and stratigraphic analyses of the Portage Lake Volcanics of the Keweenawan CFBP: implications for the evolution of main stage volcanism in Continental Flood Basalt Provinces Open
Table S1. MELTS at 2kbar