Development of Surface Wave Dispersion and Attenuation Maps and Improved Methods for Measuring Surface Waves

Stevens, J. L.; Xu, Heming; Given, Jeffrey W.; Baker, G. Eli

doi:10.21236/ada488396

Cited by 6 publications

(5 citation statements)

References 23 publications

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“…As a result, tomographic maps of attenuation coefficients for the set of periods from 14 to 24 s were obtained. This work complements numerous studies of surface wave attenuation in Asia carried out by Patton [1980], Cong and Mitchell [1998a, 1998b], Jemberie and Mitchell [2004, 2005], Stevens et al [2001, 2007], Taylor et al [2003], Yang et al [2004], Mitchell et al [2008], and others.…”

Section: Introductionsupporting

confidence: 77%

“…As a result, tomographic maps of attenuation coefficients for the set of periods from 14 to 24 s were obtained. This work complements numerous studies of surface wave attenuation in Asia carried out by Patton [1980], Mitchell [1998a, 1998b], Mitchell [2004, 2005], Stevens et al [2001Stevens et al [ , 2007, Taylor et al [2003], Yang et al [2004], Mitchell et al [2008], and others. [6] This work provides the most detailed attenuation maps characterizing the absorption and scattering of surface waves in the crust of the Asian continent.…”

Section: Introductionsupporting

confidence: 69%

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Midperiod Rayleigh wave attenuation model for Asia

Levshin

Yang

Barmin

et al. 2010

Geochem Geophys Geosyst

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[1] We present an attenuation model for midperiod Rayleigh waves in Central Asia and surrounding regions. This model is defined by maps of attenuation coefficient across the region of study in the period band 14-24 s. The model is constructed to characterize the regional variations in attenuation of seismic waves in the crust, which are related to the tectonic history of the studied territory, to calibrate the regional surface-wave magnitude scale, and to extend the teleseismic 'surface-wave magnitude -body wave magnitude' (Ms-mb) discriminant to regional distances. The construction of the model proceeds in three stages. The first stage in model construction is the measurement of Rayleigh wave spectral amplitudes. We collected and processed waveform data for 200 earthquakes occurring from 2003 to 2006 inside and around Eurasia, and used records of about 135 broadband permanent and temporary stations. This data set provided a sufficient number of spectral amplitude measurements between 14 and 24 s periods for the construction of two-dimensional tomographic maps of attenuation coefficients. At the second stage of the work, the integral of attenuation coefficients along given paths is estimated using both inter-station measurements and single-station measurements corrected for source and receiver terms. The third stage includes the refining of source parameters, recalculation of attenuation coefficient integrals after this refinement, grooming of resulting coefficients, and multistage tomographic inversion of the data. Tomographic maps for the set of periods from 14 to 24 s, which exhibit clear correlation with geology and tectonics of the territory under study, were obtained. Validation of these maps using the inter-station measurements confirms their accuracy in predicting the observations.

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Section: Introductionsupporting

confidence: 77%

“…As a result, tomographic maps of attenuation coefficients for the set of periods from 14 to 24 s were obtained. This work complements numerous studies of surface wave attenuation in Asia carried out by Patton [1980], Mitchell [1998a, 1998b], Mitchell [2004, 2005], Stevens et al [2001Stevens et al [ , 2007, Taylor et al [2003], Yang et al [2004], Mitchell et al [2008], and others. [6] This work provides the most detailed attenuation maps characterizing the absorption and scattering of surface waves in the crust of the Asian continent.…”

Section: Introductionsupporting

confidence: 69%

Midperiod Rayleigh wave attenuation model for Asia

Levshin

Yang

Barmin

et al. 2010

Geochem Geophys Geosyst

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“…Furthermore, there are additional stations along similar azimuths (e.g., HIA, CHTO, and MKAR) that did not exhibit the increased magnitudes. Stevens et al (2007) also found increased magnitudes at ENH, BJT, and TLY and had some success explaining the magnitudes using path corrections.…”

Section: Magnitude Estimationmentioning

confidence: 90%

The Surface Wave Magnitude for the 9 October 2006 North Korean Nuclear Explosion

Bonner¹,

Herrmann²,

Harkrider³

et al. 2008

Bulletin of the Seismological Society of America

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Surface waves were generated by the North Korean nuclear explosion of 9 October 2006 and were recorded at epicentral distances up to 34°, from which we estimated a surface wave magnitude (M s ) of 2.94 with an interstation standard deviation of 0.17 magnitude units. The International Data Center estimated a body-wave magnitude (m b ) of 4.1. This is the only explosion we have analyzed that was not easily screened as an explosion based on the differences between the M s and m b estimates. Additionally, this M s predicts a yield, based on empirical M s =yield relationships, that is almost an order of magnitude larger than the 0.5-1 kt reported for this explosion. We investigate how emplacement medium effects on surface wave moment and magnitude may have contributed to the yield discrepancy.

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“…It consists of the P and S velocities and density of the crust and upper mantle for a broad region of Asia (defined in a geographic box from 10 -50°N, 40 -110°E). In addition to the JWM model, we have obtained the CUB2.0 surface-wave inversion model (Ritzwoller et al, 2002) with density; the Stevens et al (2008) surface-wave inversion model; the EAV09 inversion model from the group headed by Suzan van der Lee at Northwestern University (Schmid et al, 2008); and a new P-velocity inversion model (LLNL_G3-D) from Nathan Simmons and Stephen Myers (Simmons et al, 2011). We also have access to an a priori regionalized model known as the DOE Unified Model (Begnaud et al, 2004;Pasyanos et al, 2004).…”

Section: -D Seismic Velocity Models Ground-truth Data and Analysismentioning

confidence: 99%

“…The versatility of this model format allows discontinuities and homogeneous layers to be accurately captured, and no special software is necessary to allow the models to be exchanged between researchers. Most of the models in our study can be represented in this format, although some conversion is necessary in certain cases (LP2008; Stevens et al, 2008).…”

Section: -D Seismic Velocity Models Ground-truth Data and Analysismentioning

confidence: 99%

Estimating the Uncertainty and Predictive Capabilities of Three-Dimensional Earth Models (Postprint)

Reiter¹,

Rodi²,

Myers³

2012

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Development of Surface Wave Dispersion and Attenuation Maps and Improved Methods for Measuring Surface Waves

Cited by 6 publications

References 23 publications

Midperiod Rayleigh wave attenuation model for Asia

Midperiod Rayleigh wave attenuation model for Asia

The Surface Wave Magnitude for the 9 October 2006 North Korean Nuclear Explosion

Estimating the Uncertainty and Predictive Capabilities of Three-Dimensional Earth Models (Postprint)

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