We use a large data set of 3D thermal evolution models to predict the distribution present-day seismic velocities in Martian interior. Our show difference between maximum and minimum S wave velocity up 10% either below crust, where variations are largest, or at depth olivine wadsleyite phase transition, located around 1,000–1,200 km depth. Models with thick lithospheres on average have weak low...

In large earthquakes, damaging ground motions may occur at large epicentral distances. Because of the relatively slow speed of seismic waves, it is possible to construct a system to provide short-term warning (as much as several tens of seconds) of imminent strong ground motions from major earthquakes. Automated safety responses could be triggered by users after receiving estimates of the arriv...

The article discusses the fragile destruction of building materials during strong earthquakes, features macroseismic effect cracking expressed in protective coatings buildings; it is recommended to optimize composition based on polymer by that increases crack resistance plaster solutions. In particular, visualization parameters given example survey epicentral zones Tashkent (2008), Cannes (2011...

Qualitative and quantitative analysis of seismic waveforms sensitive to the core–mantle boundary (CMB) region reveal presence ultralow-velocity zones (ULVZs) that have a strong decrease in compressional (P) shear (S) wave velocity, an increase density within thin structures. However, understanding their physical origin relation other large-scale structures lowermost mantle are limited due incom...

Abstract Increased rates of seismicity in the Delaware basin, Texas, accompanying unconventional petroleum development have created intensive interest determining their cause. Detailed and accurate spatial distribution focal mechanisms are critical components for understanding underlying industrial processes responsible inducing seismicity. We focus on a highly seismically active area straddlin...

ABSTRACT National Aeronautics and Space Administration’s Interior Exploration using Seismic Investigations, Geodesy, Heat Transport (InSight) mission on Mars continues to record seismic data over 3 yr after landing, a thousand marsquakes have been identified, date. With only single station, the determination of epicentral location is far more challenging than Earth. The Marsquake Service (MQS) ...

The earthquake early warning (EEW) system is capable of mitigating seismic hazards and reducing deaths, injuries, economic losses. Although EEW approaches have already been developed worldwide, improving the accuracy applicability still controversial. Aiming at ground motion estimation using initial P wave, we investigated eight representative characteristic parameters, i.e., peak measurements ...