Low coherency of wind induced seismic noise: implications for gravitational wave detection

Abstract Seismic noise poses challenges for gravitational wave detection. Effective vibration isolation and methods to subtract unshieldable Newtonian (NN) are examples. arrays offer one way deal with these issues by making use of correlations between seismic ground measurements inside the detector. In this paper we find that wind induced is incoherent our results show it can dramatically reduce projected low frequency sensitivity future detectors. To quantify this, measure coherence length from 0.06–20 Hz in three distinct locations: close a building, among tall trees shrubs. We ubiquitous reduces lengths several hundred meters 2–40 m 0.06–0.1 Hz, $?> > 60 3–16 1.5–2.5 35 1–16 around 16.6 study area. This leads significant loss velocity resolution array primary microseism 5 times worse NN cancellation Wiener filtering at 2 while may not pose additional limitation 10–20 Hz.