The state of stress in the Eastern California Shear Zone (ECSZ) changed significantly because of the occurrence of the 1992 Mw 6.1 Joshua Tree and the Mw 7.3 Landers earthquakes. To quantify this change, focal mechanisms from the 1975 Galway Lake sequence, the 1979 Homestead Valley sequence, background seismicity from 1981 to 1991, and the 1992 Landers sequence are inverted for the state of str...

Abstract On 15 May 2020 an Mww 6.5 earthquake occurred beneath the Monte Cristo Range in Mina Deflection region of western Nevada. Rapid deployment eight temporary seismic stations enabled detailed analysis its productive and slowly decaying aftershock sequence (p=0.8), which included ?18,000 autodetected events 3.5 months. Double-difference, waveform-based relative relocation 16,714 earthquake...

The February 21, 2008, Wells earthquake (MW=6.0) occurred in a region of northeastern Nevada where the seismicity has historically been low relative to western Nevada. In a region of area of approximately10 5 km 2 of northeastern Nevada, based rates of smaller earthquakes in the region prior to 2008, earthquakes of MW=6.0 or larger are expected with a rate of about 0.01 per year. The probabilit...

As part of an effort to develop a systematic methodology for earthquake forecasts, we use a simple model of seismicity based on interacting events which may trigger a cascade of earthquakes, well-known as the Epidemic-Type Aftershock Sequence model). The ETAS model is constructed on a (bare) Omori’s law, the Gutenberg-Richter law and the idea that large events trigger more numerous aftershocks....

This paper study the recent seismicity in Earthquake hazard zones in India. A large historical earthquake event catalog to cover the period of 1900-2018, the parameters date, time, latitude, longitude, depth and magnitude has been used to calculating frequency-magnitude distribution (b-value) of seismic hazard zones in India. To convert different magnitude scales into a single moment magnitude ...

Abstract Peninsular Malaysia is tectonically situated on a stable craton (intraplate) and so far experiences relatively little earthquake activities, thus considered as region with low seismicity. This study uses data from 59 events obtained various sources in the period 1922 to 2020. The overall seismicity area expected due general intraplate setting. Earthquakes occurred onshore offshore of b...

Abstract Deep-focus earthquakes in the Tonga–Fiji subduction zone make up greater than 66% of the globally recorded deep seismicity. The high number of deep-focus seismicity in this active subduction zone allows us to search for deep-focus similar earthquake pairs and repeating earthquakes. We compile a waveform dataset for deep earthquakes with magnitude above 4.7 occurring in the Tonga–Fiji–K...

Seismicity models are probabilistic forecasts of earthquake rates to support seismic hazard assessment. Physics-based allow extrapolating previously unsampled parameter ranges and enable conclusions on underlying tectonic or human-induced processes. The Coulomb Failure (CF) the rate-and-state (RS) two widely used physics-based seismicity both assuming pre-existing populations faults responding ...

Abstract It is commonly assumed that intermediate-depth seismicity in some way linked to dehydration reactions inside subducting oceanic plates. Although there growing evidence the hydration state of an plate controlled by its structure and degree faulting, we do not have a quantitative understanding this relationship. Double seismic zones offer possibility investigating changes oceanic-plate o...