RESULTS FOR teleseismic
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Localized Anisotropic Subduction‐Zone Structure in Southern Peru: Constraints from Teleseismic Receiver Functions and Forward Modeling
Published: 01 May 2019
Seismological Research Letters (2019) 90 (5): 1820-1835.
... flat to normal. We applied harmonic decomposition of teleseismic receiver functions (RFs) to retrieve isotropic and anisotropic structures of the oceanic crust and uppermost mantle of the plate, and provide model parameters that best represent the observed structures and clarify the geodynamic...
Wavefield Reconstruction of Teleseismic Receiver Function with the Stretching‐and‐Squeezing Interpolation Method
Published: 27 December 2018
Seismological Research Letters (2018) 90 (2A): 716-726.
...Shaoqian Hu; Xiaohuan Jiang; Lupei Zhu; Huajian Yao ABSTRACT A nonlinear stretching‐and‐squeezing approach is proposed for interpolation and regularization of the teleseismic receiver function (RF) of a regional seismic array. Synthetic experiments for several models show that our method...
Systemic Comparison of Seismometer Horizontal Orientations Based on Teleseismic Earthquakes and Ambient‐Noise Data
Published: 16 October 2018
Bulletin of the Seismological Society of America (2018) 108 (6): 3576-3589.
... those based on teleseismic earthquakes; (2) orientation measurements of sensors on land based on relatively long‐period (20–50 s) ambient‐noise CCs are more stable than those based on short‐period (10–20 s) ones; and (3) orientation measurements based on ambient‐noise CCs using only one month of noise...
Structure of the Northern Los Angeles Basins Revealed in Teleseismic Receiver Functions from Short‐Term Nodal Seismic Arrays
Published: 01 August 2018
Seismological Research Letters (2018) 89 (5): 1680-1689.
...Guibao Liu; Patricia Persaud; Robert W. Clayton ABSTRACT We use teleseismic receiver functions computed from an ∼ 35 ‐ day nodal dataset recorded along three profiles in the northern basins of Los Angeles, California, to map the depth and shape of the sediment–basement interface and to identify...
Published: 25 July 2018
Seismological Research Letters (2018) 89 (5): 1817-1825.
... variations. Using NCF‐based beamforming, we isolate these signals from surface waves to better address their slowness distributions and source locations. They are identified as the interference of teleseismic P ‐wave microseisms. Backprojection results indicate that the sources are from deep oceans...
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Deep Crustal Earthquakes in the Beaufort Sea, Western Canadian Arctic, from Teleseismic Depth Phase Analysis
Published: 09 May 2018
Seismological Research Letters (2018) 89 (4): 1379-1384.
... is severely hampered by the scarcity of the regional and global seismograph networks in this area. We determine the focal depth of earthquakes with magnitude ≥ 4 that occurred in the Beaufort Sea cluster since 1995 by analyzing the teleseismic P ‐wave coda containing a visible depth phase ( pP and/or sP...
Published: 20 April 2018
Geosphere (2018) 14 (3): 1343-1364.
...Daniel W. Zietlow; Anne F. Sheehan; Melissa V. Bernardino Abstract An S-wave tomogram produced from finite-frequency tomography using teleseismic travel-time measurements made on and offshore the South Island of New Zealand shows four major features: high speeds in the upper mantle under...
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Multiple‐Fault, Slow Rupture of the 2016 M w 7.8 Kaikōura, New Zealand, Earthquake: Complementary Insights from Teleseismic and Geodetic Data
Published: 17 April 2018
Bulletin of the Seismological Society of America (2018) 108 (3B): 1774-1783.
...Yi‐Ying Wen; Kuo‐Fong Ma; Bill Fry Abstract We investigate the complex rupture properties of the 2016 M w 7.8 Kaikōura earthquake by jointly inverting teleseismic body‐wave and regional Global Positioning System (GPS) coseismic deformation data within a multifault model. We validate our results...
Multiobjective Optimization of Regional and Teleseismic Data to Constrain the Source of the 12 September 2016 M w 5.4 Earthquake in South Korea
Published: 12 December 2017
Bulletin of the Seismological Society of America (2017) 108 (1): 175-187.
...Jean Letort; Aurélie Guilhem Trilla; Sean R. Ford; Stephen C. Myers Abstract We propose a new approach for source inversion with automatic criteria for the station selection process and using a multiobjective optimization scheme combining teleseismic body‐wave and regional surface‐wave observations...
From Relative to Absolute Teleseismic Travel Times: The Absolute Arrival‐Time Recovery Method (AARM)
Published: 25 September 2017
Bulletin of the Seismological Society of America (2017) 107 (5): 2511-2520.
...Alistair Boyce; Ian D. Bastow; Stéphane Rondenay; Robert D. Van der Hilst Abstract Dense, short‐term deployments of seismograph networks are frequently used to study upper‐mantle structure. However, recordings of variably emergent teleseismic waveforms are often of lower signal‐to‐noise ratio (SNR...
On the Viability of Using Autonomous Three‐Component Nodal Geophones to Calculate Teleseismic Ps Receiver Functions with an Application to Old Faithful, Yellowstone
Published: 09 August 2017
Seismological Research Letters (2017) 88 (5): 1268-1278.
... instruments, the relatively low deployment and procurement cost of these new nodal geophones provides an additional novel tool for researchers. Here, we explore the viability of using autonomous three‐component nodal geophones to calculate teleseismic Ps receiver functions by comparison of co‐located...
The deforming Nazca slab in the mantle transition zone and lower mantle: Constraints from teleseismic tomography on the deeply subducted slab between 6°S and 32°S
Published: 01 June 2017
Geosphere (2017) 13 (3): 665-680.
...-frequency teleseismic P-wave tomography to image the Nazca slab from the upper mantle into the mantle transition zone (MTZ) and the uppermost lower mantle on a regional scale. Our tomography shows that there is significant along-strike variation in the morphology of the Nazca slab in the MTZ and the lower...
Published: 28 March 2017
Bulletin of the Seismological Society of America (2017) 107 (3): 1526-1544.
... of nonlinear constraints. However, the Bayesian approach can be employed to find a Gaussian or non‐Gaussian distribution of all probable model parameters, while utilizing nonlinear constraints. We present case studies to quantify the resolving power and associated uncertainties using only teleseismic body...
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SplitRacer: MATLAB Code and GUI for Semiautomated Analysis and Interpretation of Teleseismic Shear‐Wave Splitting
Published: 11 January 2017
Seismological Research Letters (2017) 88 (2A): 392-409.
...Miriam Christina Reiss; Georg Rümpker Abstract We present a graphical user interface in the MATLAB environment for teleseismic shear‐wave splitting analysis. In view of increasingly large seismological experiments, SplitRacer is designed to process large data sets quickly for which it integrates...
Velocity Structure of the Northern Mississippi Embayment Sediments, Part II: Inversion of Teleseismic P ‐Wave Transfer Functions
Published: 10 January 2017
Bulletin of the Seismological Society of America (2017) 107 (1): 106-116.
...Akram Mostafanejad; Charles A. Langston Abstract Detailed shear and compressional gradient velocity structure for the unconsolidated sediments of the Mississippi Embayment (ME) have been obtained through simultaneous inversion of radial and vertical teleseismic transfer functions for 60 broadband...
Published: 30 November 2016
Seismological Research Letters (2016) 88 (1): 39-48.
...Stéphane Rondenay; Kathrin Spieker; Lucas Sawade; Felix Halpaap; Mari Farestveit ABSTRACT Teleseismic receiver functions (RFs) provide a simple means to image structure in the Earth’s subsurface. Despite its ease of use, the method has traditionally required considerable user input to ensure...
Velocity Structure of the Northern Mississippi Embayment Sediments, Part I: Teleseismic P ‐Wave Spectral Ratios Analysis
Published: 29 November 2016
Bulletin of the Seismological Society of America (2016) 107 (1): 97-105.
... interface and the near‐vertical ray paths of teleseismic P ‐waves generate very large P to S conversions on the radial component and large P reverberations on the vertical component. This characteristic of P ‐wave propagation is used to study P ‐ and S ‐wave resonance in the sedimentary layer. Horizontal...
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Published: 19 July 2016
Bulletin of the Seismological Society of America (2016) 106 (5): 1948-1962.
...Xiaotao Yang; Gary L. Pavlis; Yinzhi Wang Abstract We introduce a new semiautomated quality control ( QC ) method for teleseismic P ‐wave receiver functions consisting of 13 editing procedures. These procedures are categorized into three groups based on (1) deconvolution attributes, (2...
Published: 01 June 2016
Geology (2016) 44 (6): 475-478.
... Europe), obtained by full waveform inversion of teleseismic P waves. This tomographic model reveals the subduction of the Iberian crust beneath the European plate, and the European serpentinized subcontinental mantle emplaced at shallow crustal levels beneath the Mauléon basin. The rift-inherited mantle...
A Uniform Database of Teleseismic Shear‐Wave Splitting Measurements for the Western and Central United States: December 2014 Update
Published: 20 January 2016
Seismological Research Letters (2016) 87 (2A): 295-300.
.... Garnero E. ( 1998 ). The core‐mantle boundary layer and deep Earth dynamics , Nature 392 , 461–468 . Liu K. H. ( 2009 ). NA‐SWS‐1.1: A uniform database of teleseismic shear‐wave splitting measurements for North America , Geochem. Geophys. Geosyst. 10 , Q05011 , doi: 10.1029...
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