Seismogenic nodes as a viable alternative to seismogenic zones and observed seismicity for the definition of seismic hazard at regional scale

Electromagnetic View of the Seismogenic Zones Beneath Island Arcs

Temporal variations of seismic anisotropy in seismogenic areas :

Des variations de paramètres physiques, avant et suite au séisme de Parkfield, 2004, Mw 6.0, et pouvant être associés à l’anisotropie sismique, ont été extraites des ondes de surface reconstruites par la méthode de cross-corrélation du bruit sismique. En effet, en cross-corrélant les trois composantes du bruit enregistré passivement à deux stations sismiques, on obtient le tenseur des corrélati...

Seismogenic properties of the crust inferred from recent studies of reservoir-induced seismicity – Application to Koyna

Recent studies of reservoir-induced seismicity have led to a better understanding of the seismogenic crust. These studies reveal that many parts of the seismogenic crust are critically stressed and small strength changes induced by reservoir impoundment can lead to seismicity. In the vicinity of the reservoir impoundment causes an immediate undrained response to the loading, and a delayed respo...

Seismicity and Seismic Hazard of Northeastern Nevada

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...

Analyzing seismicity hazard in Boinzahra, Qazvin and Hamedan zones

Today analyzing seismicity hazard urban different areas is critical and inevitable due to develop and to expand cities in seismically active zones and naturally, the hazard because the earthquake is more in the bigger cities and the necessity to consider these hazards would be increased. Expanding the cities in Iran seismically active zones caused to be necessary to analyze earthquake hazard. B...