[1] We use recent results on statistical analysis of seismicity to present a robust method for comprehensive detection and analysis of earthquake clusters. The method is based on nearest-neighbor distances of events in space-time-energy domain. The method is applied to a 1981–2011 relocated seismicity catalog of southern California having 111,981 events with magnitudes m ≥ 2 and corresponding s...

Hydroseismicity was proposed to explain the occurrence of intraplate earthquakes in regions. Koyna Warna region one of the reservoir triggered seismicity zone in India, which is an example of intraplate earthquake region. The seismicity is continuing after 45 years of impoundment of the Koyna reservoir in 1961 and 25 years of impoundment of Warna reservoir in 1985. The excess of previous maximu...

Short-term earthquake prediction, months in advance, is an elusive goal of earth sciences, of great importance for fundamental science and for disaster preparedness. Here, we describe a methodology for short-term prediction named RTP (Reverse Tracing of Precursors). Using this methodology the San Simeon earthquake in Central California (magnitude 6.5, Dec. 22, 2003) and the Tokachi-Oki earthqua...

We investigate upper plate stressing during the earthquake cycle in a subduction segment, using three-dimensional (3-D) elastic models to address the effects of strongly heterogeneous coupling along strike of the interplate interface. We show how heterogeneity controls the locations and mechanisms of seismicity in the upper plate. Oblique subduction segments, two from the Aleutians (Andreanof I...

Tectonic faults show rheological heterogeneity in interfaces, and the spectrum of their sliding regimes span a continuum from slow-slip events to dynamic ruptures. The fault interface is crucial for mechanics faulting. By using earthquake source locations, complex structure can be reproduced at resolution down 50–100 m. Here, we use declustered seismic catalog Northern California investigate st...

Abstract Sometimes, a rather high stress drop characterizes earthquakes induced by underground fluid injections or productions. In addition, long-term operations in the can influence seismogenic reaction of rock per unit volume involved. The index is quantitative characteristic such reaction. We derive relationship between and drop. This shows that increases with average seismicity. Further, we...

We present supporting material for the manuscript ”Imaging widespread seismicity at mid-lower crustal depths beneath Long Beach, CA, with a dense seismic array: Evidence for a depth-dependent earthquake size distribution”. The material contains three figures. The purpose of the figures is to illustrate the advantages of downward-continuing the data prior to back-projection, and to provide detai...

Following the 2002 M 7.9 Denali fault earthquake, clear changes in geyser activity and a series of local earthquake swarms were observed in the Yellowstone National Park area, despite the large distance of 3100 km from the epicenter. Several geysers altered their eruption frequency within hours after the arrival of large-amplitude surface waves from the Denali fault earthquake. In addition, ear...

The Alto Tiberina Fault system, located in the Northern Apennines (Italy), consists of a low angle normal fault (LANF) which radiates micro-seismicity that can be explained by continuous creep. On top LANF, network syn- and antithetic high faults frequently hosts seismic swarms, one has been associated with transient aseismic deformation signal. To study detail seismicity its relationships proc...