Data Products at the IRIS DMC: Stepping Stones for Research and Other Applications

Trabant, Chad; Hutko, A. R.; Bahavar, M.; Karstens, R.; Ahern, T. K.; Aster, R. C.

doi:10.1785/0220120032

Cited by 164 publications

(127 citation statements)

References 31 publications

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“…4a and b using a Vp of 6.5 km/s. All of our results for both CHTO and CMMT stations agree well with each other and are within an acceptable level when compared with other studies (Bai et al, 2010;Crotwell and Owens, 2005;Hu et al, 2008;Trabant et al, 2012;Wongwai, 2011). Only the results from Tadapansawut et al (2012) and from the CRUST 2.0 model (Bassin et al, 2000;Laske et al, 2000) are much higher than the others.…”

Section: Data Selection Methodsology and Validationsupporting

confidence: 90%

“…Since CMMT and CHTO are located in the same borehole, and the tele-seismic data from the CHTO station has been used extensively before in many publications (Bai et al, 2010;Crotwell and Owens, 2005;Hu et al, 2008;Trabant et al, 2012;Wongwai, 2011), we therefore Bassin et al (2000). The small squares are from Wongwai (2011) in the lower half and Tadapansawut et al (2012) in the upper half.…”

Section: Data Selection Methodsology and Validationmentioning

confidence: 99%

“…Here, to extract H and k in each station, we apply the H-k stacking method of Zhu and Kanamori (2000) to analyze these receiver functions. The average Pwave crustal velocities used in this analysis are (1) 6.5 km/s from a global crust average (Christensen and Mooney, 1995) and (2) 6.35 km/s as used in the EarthScope Automated Receiver Survey (Crotwell and Owens, 2005;Trabant et al, 2012). The grid for the crustal thickness was varied from 20 to 50 km, while that of the k ratio was varied from 1.5 to 1.9.…”

Section: Data Selection Methodsology and Validationmentioning

confidence: 99%

See 2 more Smart Citations

Thailand's crustal properties from tele-seismic receiver function studies

Noisagool

Boonchaisuk

Pornsopin³

et al. 2014

Tectonophysics

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Section: Data Selection Methodsology and Validationsupporting

confidence: 90%

Section: Data Selection Methodsology and Validationmentioning

confidence: 99%

Section: Data Selection Methodsology and Validationmentioning

confidence: 99%

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Thailand's crustal properties from tele-seismic receiver function studies

Noisagool

Boonchaisuk

Pornsopin³

et al. 2014

Tectonophysics

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“…Although wavefield visualization from seismic sensors has been done by applying spatial smoothing (Sheldrake et al 2002;Maeda et al 2014) or by using a set of individual traces (Trabant et al 2012), seismic gradiometry makes it possible to estimate spatial gradients in horizontal directions as well, and these horizontal gradients are extremely useful for characterizing wave propagation. Also, the estimation process is linear and therefore can be done very quickly; thus, it is suitable for (semi) real-time seismic wavefield monitoring.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, seismic waves propagating across arrays have been visualized for various arrays (e.g., Obara et al 2005;Sheldrake et al 2002;Trabant et al 2012). Such visualization is useful not only for educational or outreach purposes but also for capturing characteristic wave propagation.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of a 2D seismic wavefield by seismic gradiometry

Maeda

Nishida

Takagi

et al. 2016

Prog. in Earth and Planet. Sci.

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We reconstructed a 2D seismic wavefield and obtained its propagation properties by using the seismic gradiometry method together with dense observations of the Hi-net seismograph network in Japan. The seismic gradiometry method estimates the wave amplitude and its spatial derivative coefficients at any location from a discrete station record by using a Taylor series approximation. From the spatial derivatives in horizontal directions, the properties of a propagating wave packet, including the arrival direction, slowness, geometrical spreading, and radiation pattern can be obtained. In addition, by using spatial derivatives together with free-surface boundary conditions, the 2D vector elastic wavefield can be decomposed into divergence and rotation components. First, as a feasibility test, we performed an analysis with a synthetic seismogram dataset computed by a numerical simulation for a realistic 3D medium and the actual Hi-net station layout. We confirmed that the wave amplitude and its spatial derivatives were very well-reproduced for period bands longer than 25 s. Applications to a real large earthquake showed that the amplitude and phase of the wavefield were well reconstructed, along with slowness vector. The slowness of the reconstructed wavefield showed a clear contrast between body and surface waves and regional non-great-circle-path wave propagation, possibly owing to scattering. Slowness vectors together with divergence and rotation decomposition are expected to be useful for determining constituents of observed wavefields in inhomogeneous media.

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Dynamic lithosphere within the Great Basin

Porter

Fouch

Schmerr

2014

Geochem. Geophys. Geosyst.

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To place new constraints on the short-term, broad-scale lithospheric evolution of plate interiors, we utilize broadband seismic data from the Great Basin region of the Western United States to produce high-resolution images of the crust and upper mantle. Our results suggest that parts of the Great Basin lithosphere has been removed, likely via inflow of hot asthenosphere as subduction of the Farallon spreading center occurred and the region extended. In our proposed model, fragments of thermal lithosphere removed by this process were gravitationally unstable and subsequently sank into the underlying mantle, leaving behind less dense, stronger, chemically depleted lithosphere. This destabilization process promotes volcanism, deformation, and the reworking of continental lithosphere inboard from plate margins. Our results provide evidence for a new mechanism of lithospheric evolution that is likely common and significant in postsubduction tectonic settings.

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Data Products at the IRIS DMC: Stepping Stones for Research and Other Applications

Cited by 164 publications

References 31 publications

Thailand's crustal properties from tele-seismic receiver function studies

Thailand's crustal properties from tele-seismic receiver function studies

Reconstruction of a 2D seismic wavefield by seismic gradiometry

Dynamic lithosphere within the Great Basin

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