One of the most commonly used parameters to describe seismic attenuation is the high‐
frequency spectral decay parameter Kappa (⁠ κ r⁠), yet the physics behind it remain little …

Kappa (κr), the high-frequency spectral decay parameter, has been gaining popularity in the
engineering seismology field for more than forty years, but it was not until recently that κr has …

Kappa (the high‐frequency spectral decay slope at near‐source distances; often referred to
as κ 0) is determined at 25 seismograph stations in Eastern Canada using broadband …

Ground‐motion studies are a key component of seismic hazard analyses and often rely on
information of the source, path, and site. Extensive research has been done on each of …

Spectral decay of ground‐motion amplitudes at high frequencies is primarily influenced by
two parameters: site‐related kappa (⁠ κ 0⁠) and regional Q (quality factor, inversely …

In a way perhaps not dissimilar to stress drop (Atkinson and Beresnev, 1997), the high-
frequency attenuation parameter κ (kappa), introduced by Anderson and Hough (1984), is …

Kappa is a one‐parameter estimator of the spectral amplitude decay with frequency of a
seismogram. Low values (∼ 5 ms) indicate limited attenuation of high‐frequency energy …

Determination of the site component of κ (κ 0) is important in the implementation of host‐to‐
target adjustments for estimation of seismic hazard at hard‐rock sites. Its evaluation through …

Spectral parameter kappa (κ) is widely used to model the decay slope of the Fourier
acceleration spectrum at high frequencies. This study presents estimates of κ 0, often …

Abstract Knowledge of the acceleration spectral shape is crucial to various applications in
engineering seismology. Spectral amplitude decays rapidly at high frequencies. introduced …