Two volcanic eruptions in the Sumatra-Andaman arc that followed the disastrous M 9.3 earthquake of 26 December 2004 raise the question of whether these eruptions were triggered by the earthquake. Here we present new evidence to suggest that earthquake-induced decompression of the volcano magma systems leads to such eruptions. Numerical modeling reveals that other megathrust earthquakes induced ...

Contents 1. Introduction 2. Seismicity induced by natural processes 2.1. Triggering of earthquakes by the Earth's tide 2.2.Changes of the Earth's rotation speed 2.3. Meteorological processes 2.4. Strong earthquakes 3. Seismicity induced by technogenic impacts 3.1. Creation of large dams and reservoirs 3.2. Oil and gas extraction 3.3. Underground nuclear tests 3.4. Action of powerful electric pu...

Since the 1960s, numerous cases of induced seismicity have been associated with reservoir impoundment, mining and the injection of fluids into the subsurface [National Resources Council, 2012]. In recent years, fluid injection activities have intensified as a result of growing shale gas production, enhanced oil recovery, disposal of produced waters in dedicated injection wells, enhanced geother...

[1] Subducted seamounts have been linked to interplate earthquakes, but their specific effects on earthquake mechanism remain controversial. A key question is under what conditions a subducted seamount will generate or stop megathrust earthquakes. Here we show results from numerical experiments in the framework of rateand state-dependent friction law in which a seamount is characterized as a pa...

A recent dramatic increase in seismicity in the midwestern United States may be related to increases in deep wastewater injection. Here, we demonstrate that areas with suspected anthropogenic earthquakes are also more susceptible to earthquake-triggering from natural transient stresses generated by the seismic waves of large remote earthquakes. Enhanced triggering susceptibility suggests the pr...

Abstract Landslides and slope failures are often caused by earthquakes. This study proposes a method to map earthquake-induced failure hazards that uses the analytic hierarchy process (AHP) geographic information system (GIS) for four districts where many were induced earthquakes (the 2018 Hokkaido Eastern Iburi, 2016 Kumamoto, 2008 Iwate-Miyagi Nairiku, 2004 Mid Niigata Prefecture earthquakes)...

Anthropogenic fluid injections are known to induce earthquakes. The mechanisms involved are poorly understood, and our ability to assess the seismic hazard associated with geothermal energy or unconventional hydrocarbon production remains limited. We directly measure fault slip and seismicity induced by fluid injection into a natural fault. We observe highly dilatant and slow [~4 micrometers pe...