Institute of Geophysics
New Paper in Seismica (Diamond Open Access)
22 December 2022
Photo: Sven Schippkus
Seismica is a new community-driven, Diamond Open Access journal publishing peer-reviewed research in seismology and earthquake science. Diamond Open Access journals are free for all to read, without subscriptions, and do not charge article processing fees to authors.
We are happy not announce that members of the Institute of Geophysics contributed to this new and exciting endeavour in seismology with a paper in the very first issue of Seismica. The paper is entitled “Seismic interferometry in the presence of an isolated noise source” by Sven Schippkus (UHH), Roel Snieder (Colorado School of Mines), and Céline Hadziioannou (UHH).
Seismic interferometry of ambient seismic noise gives a new "correlation wavefield" that relates to the Green's function of the medium. This is only true for a homogeneous distribution of noise sources. Non-homogeneous distributions commonly lead to asymmetric correlation functions. Here, we observe and describe a more extreme case of that: A wind farm acts as an isolated noise source and induces an entirely separate seismic phase. This paper is the first time such "spurious arrivals" are observed in this much spatial detail, which allows unique insights into its behaviour and estimate their impact on tomography applications. Check out the paper for even more details!
