Earthquake probabilities methods encompass quantitative frameworks used to estimate the likelihood of seismic events occurring in specified space-time-magnitude windows. These approaches include time-independent probabilistic seismic hazard analysis (PSHA), which treats earthquakes as a Poisson process using long-term occurrence rates, and time-dependent models, such as renewal and stress-transfer-based formulations, which incorporate recurrence intervals, Coulomb stress changes, and fault loading rates. Methods integrate earthquake catalogs, fault slip rates, ground-motion prediction equations, and epistemic/aleatory uncertainty through logic trees or Bayesian inference, producing probabilistic forecasts used for hazard maps, risk assessment, and performance-based seismic design.
UC Riverside scientists have developed a way to identify where Earth's biggest earthquakes are most likely to occur, offering a powerful new tool for improving disaster preparation in some of the most dangerous seismic regions.
Earth Sciences
Sep 5, 2026
0
92
The two powerful earthquakes that struck Venezuela's northern coast, killing more than 180 people, were an event known as a "doublet."
Earth Sciences
Jun 25, 2026
0
19
Too much stress can make even a rock crack. But before rocks reach their breaking point, they "sigh" a chemical warning by releasing nuclides, a type of atom defined by the number of neutrons as well as protons in the nucleus. ...
Earth Sciences
Apr 22, 2026
0
14
A 7.7 magnitude earthquake Monday off northern Japan sparked a short-lived tsunami alert and an advisory of a slightly higher risk of a possible megaquake for its coastal areas.
Environment
Apr 21, 2026
0
16
An earthquake registering a preliminary magnitude of 7.7 off northern Japan on Monday prompted a short-lived tsunami alert and the advisory of a higher risk of a possible mega-quake for coastal areas there.
Environment
Apr 20, 2026
0
9
The Phlegraean Fields volcanic complex, located beneath the metropolitan area of Naples—a city of 900,000 inhabitants in Italy—has been rising increasingly since 2005, accompanied by a growing number of small earthquakes. ...
Earth Sciences
Mar 26, 2026
0
101
In 1957, Vancouver took a decisive turn in its urban development when city council lifted the eight-story height limit in the West End neighborhood on the downtown peninsula, opening the door to high-rise living along English ...
Earth Sciences
Mar 2, 2026
0
15
A fault line in Canada's Yukon territory has stirred after more than 12,000 years of geological sleep. Researchers studying the Tintina Fault, which stretches 1,000 kilometers from northeast British Columbia into the Yukon ...
Environment
Dec 2, 2025
0
19
Earthquake forecasting tools powered by AI can forecast the risk of aftershocks seconds after the initial tremor, a new study suggests. The machine learning models can forecast where, and how many, aftershocks will take place ...
Earth Sciences
Nov 24, 2025
0
24
Large earthquakes along some of New Zealand's major faults are commonly clustered in time and place, according to recent research.
Earth Sciences
Aug 21, 2025
0
25
