High Crustal Seismic Attenuation in Ladakh- Karakoram

Hybridization of granitic magmas in the source: The origin of the Karakoram Batholith, Ladakh, NW India

Seismic Wave Attenuation in Carbonates

Relative Seismic Attenuation Estimation

The end goal of any solid Earth study is to better constrain physical parameters of the Earth (e.g. viscosity, temperature, and mineral composition). As we are unable to directly measure many of these quantities, past a few kilometers in depth, we must content ourselves with indirect estimates by way of experiment and theory. Just as geochemists do this by way of compositional deviations from p...

Seismic attenuation beneath Kanto, Japan: evidence for high attenuation in the serpentinized subducting mantle

The three-dimensional (3-D) P-wave attenuation (Qp ) structure beneath Kanto, Japan, is estimated by using a large number of waveform data. Corner frequencies of earthquakes are initially calculated from spectral ratios of S-coda waves, followed by an inversion to simultaneously determine attenuation terms and frequency-dependent site amplification factors. The attenuation terms are then invert...

Non-linear crustal corrections in high-resolution regional waveform seismic tomography

S U M M A R Y We compare 3-D upper mantle anisotropic structures beneath the North American continent obtained using standard and improved crustal corrections in the framework of Non-linear Asymptotic Coupling Theory (NACT) applied to long period three component fundamental and higher mode surface waveform data. Our improved approach to correct for crustal structure in high-resolution regional ...