Seismic Attenuation Extraction From Traffic Signals Recorded by a Single Seismic Station

Extracting Seismic Profiles from Background Seismic Signals

The idea of obtaining the seismic trace representing the impulse response at one receiver due to a source at another receiver has discussed by many authors. Jon Claerbout (see e.g. Rickett and Claerbout, 1996; Claerbout, web) introduced the concept to seismology. It has been investigated in the laboratory by Lobkis and Weaver (2001), observed in seismic data by Campillio and Paul (2003), and in...

Relocating a Cluster of Earthquakes Using a Single Seismic Station

Coda waves arise from scattering to form the later arriving components of a seismogram. Coda-wave interferometry (CWI) is an emerging tool for constraining earthquake source properties from the interference pattern of coda waves between nearby events. A new earthquake location algorithm is derived which relies on coda-wave-based probabilistic estimates of earthquake separation. The algorithm ca...

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...

A Slow Seismic Event Recorded in Pasadena

A prominent long-period wave with a duration of 2000 sec or longer was recorded with a very-broadband system in Pasadena on June 18, 1988. This wave was not observed elsewhere, and i s considered of local origin. The acceleration amplitude is 2.5x10 -5 cm/sec 2 in the northwest direction, with the vertical component less than 10% of the horizontal. The horizontal acceleration can be interpreted...

Seismic Wave Attenuation in Carbonates