Seismic Noise Autocorrelations on Mars

Impact - generated seismic signals on Mars

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 ...

Seismic noise emission induced by seismic waves

The in situ rock undergoing different kinds of deformation accumulates elastic energy that can be released spontaneously o r under artificial effect. Triggering of energy can also be performed by means of a dynamic excitation caused by elastic waves. W e carried out special field investigations with the use of seismic vibrators (Vibroseis-like sources) to study the effect of the energy release ...

Seismic Noise Trapping in Firn

A comparative analysis was performed on datasets from two Global Seismographic Network (GSN) stations near the South Pole, Antarctica. The results of this analysis are provided and show that there is significant reduction of the background seismic noise generated by the activities at the Amundsen-Scott South Pole Station as a function of distance and depth. Data gathered from site selection wor...

Seismic Gradiometry using Ambient Seismic Noise in an Anisotropic Earth

Event-driven Seismic Interferometry with Ambient Seismic Noise

SUMMARY By cross-correlating recordings of ambient seismic noise, one can retrieve the subsurface reflection response. The quality of the retrieved reflections would depend on the qualities of the ambient noise. In a previous study, we cross-correlated ambient-noise data recorded in a desert area in North Africa and showed that we retrieved reflections. This was done assuming that body-wave noi...