نتایج جستجو برای: seismic source

تعداد نتایج: 452641  

2012
Kees Wapenaar Filippo Broggini Roel Snieder

S U M M A R Y With seismic interferometry a virtual source can be created inside a medium, assuming a receiver is present at the position of the virtual source. Here we discuss a method that creates a virtual source inside a medium from reflection data, without needing a receiver inside the medium. Apart from the reflection data, an estimate of the direct arrivals is required. However, no expli...

2012
Kees Wapenaar Filippo Broggini Roel Snieder

With seismic interferometry a virtual source can be created inside a medium, assuming a receiver is present at the position of the virtual source. Here we discuss a method that creates a virtual source inside a medium from reflection data, without needing a receiver inside the medium. Apart from the reflection data, an estimate of the direct arrivals is required. However, no information about t...

Understanding strong ground motions in the near-fault areas is important for seismic risk assessment in densely populated areas. In the past, lack of information on strong ground motion for large and moderate earthquakes led to the use of mainly far field large and moderate earthquake records in equations for calculation of the strong ground motion parameters. In this article, we collected and ...

Journal: :Geophysical Journal International 1982

2017
Gareth S. Collins Ian Bastow Katarina Miljkovic

Meteorite impacts will be a key seismic source for probing Mars’ interior during the InSight mission. Maximising data exploitation requires a good understanding of impact-generated seismic ground motions (waves), which has been limited by a lack of observational data and the practical difficulty of replicating relevant martian impact conditions in experiments. The aim of this PhD project is to ...

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 2016

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2013
Michael A H Hedlin Kristoffer T Walker

We discuss the use of reverse time migration (RTM) with dense seismic networks for the detection and location of sources of atmospheric infrasound. Seismometers measure the response of the Earth's surface to infrasound through acoustic-to-seismic coupling. RTM has recently been applied to data from the USArray network to create a catalogue of infrasonic sources in the western US. Specifically, ...

Journal: :Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 2009

Journal: :Geophysical Research Letters 2007

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