Origins of Amplitude Variations In Seismic Doublets: Source Or Attenuation Process?

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...

On estimating attenuation from the amplitude of the spectrally whitened ambient seismic field

Cornelis Weemstra,1,2 Willem Westra,3 Roel Snieder4 and Lapo Boschi5,6 1Spectraseis, Denver, CO, USA. E-mail: [email protected] 2Institute of Geophysics, ETH, Sonneggstrasse 5, CH-8092 Zürich, Switzerland 3Department of Mathematics, University of Iceland Dunhaga 3, 107 Reykjavik, Iceland 4Center for Wave Phenomena, Colorado School of Mines, Golden, CO 80401, USA 5UPMC, Université Paris 06, IS...

Evaluation of attenuation correction process in cardiac SPECT images

  Introduction: Attenuation correction is a useful process for improving myocardial perfusion SPECT and is dependent on activity and distribution of attenuation coefficients in the body (attenuation map). Attenuation artifacts are a common problem in myocardial perfusion SPECT. The aim of this study was to compare the effect of attenuation correction using different a...

Amplitude variations in coarticulated vowels.

This paper seeks to characterize the nature, size, and range of acoustic amplitude variation in naturally produced coarticulated vowels in order to determine its potential contribution and relevance to vowel perception. The study is a partial replication and extension of the pioneering work by House and Fairbanks [J. Acoust. Soc. Am. 22, 105-113 (1953)], who reported large variation in vowel am...