Body-wave seismic interferometry on passive seismic data for imaging CO2 reinjection at the Hellisheiði geothermal power plant, Iceland

CO2 and H2S are reinjected at Hellisheiði, Iceland, to reduce the emissions of greenhouse gases. An active-source seismic campaign was done in July, 2021, to image the reinjection reservoir with various seismic methods for consecutive monitoring. At the same time, passive-source seismic data was recorded for imaging.<br/>We process this passive...

Application of seismic interferometry by Multidimensional Deconvolution to USArray data

Seismic interferometry by crosscorrelation has found wide application over the last decade. With which, the Green’s function is retrieved between two receiver positions. Because the bulk of the ambient seismic field consists of surface wave energy, most applications in seismology utilize the surface wave part of the Green’s function. The correct...

Low-frequency SNR improvement of refracted waves by cascaded correlation and convolution

Seismic interferometry is the process where new impulse responses, i.e. Green’s functions, are retrieved between two points by cross-correlation, convolution or deconvolution of wavefield responses. Seismic interferometry is also referred to as Green’s function retrieval. Newly retrieved Green’s function might contain spurious events that arise...

Surface-wave retrieval using Seismic Interferometry by multi-dimensional deconvolution

In this thesis, seismic interferometry by multi dimensional deconvolution is used to retrieve the surface-wave response from a virtual source to a receiver by using the observations due to, often passive, noise sources located elsewhere. The virtual source response is used to retrieve the phase velocity, a property used for shallow subsurface...