Iterative deconvolution and receiver-function estimation

Ligorría, Juan Pablo; Ammon, Charles J.

doi:10.1785/bssa0890051395

Cited by 1,115 publications

(253 citation statements)

References 14 publications

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“…We present a lithospheric shear-wave velocity model in applied a time-domain iterative deconvolution technique (Ligorría & Ammon, 1999) to extract RFs with a Gaussian filter parameter of 2.5. We discarded the RFs with waveform fits of less than 85% and moveout corrected all RFs to a slowness of 0.064 s/km using the global 1-D velocity model IASP91 (Kennett & Engdahl, 1991).…”

Section: Significance Statementmentioning

confidence: 99%

Lithospheric structure beneath the Qinling Orogenic Belt and its surrounding regions: Implications for regional lithosphere deformation

2021

Terra Nova

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The Qinling Orogenic Belt (QOB) is located between the North China Craton (NCC) and South China Block (SCB), and links the Dabie Orogenic Belt (DOB) in the east and Qilian-Kunlun Orogenic Belt in the west (Figure 1). It is one of the most important suture zones in eastern Asia, which experienced multi-episode ocean-continent subduction, continent-continent collision and intracontinental orogeny from the early Palaeozoic to the Mesozoic (Dong & Santosh, 2016; Dong et al., 2011). It is a widely studied region within the geoscience community for its complex lithosphere structure, multiphase tectonic evolution and rollback of the high and ultrahigh pressure (UHP) metamorphic rocks (

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Section: Significance Statementmentioning

confidence: 99%

Lithospheric structure beneath the Qinling Orogenic Belt and its surrounding regions: Implications for regional lithosphere deformation

2021

Terra Nova

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“…From all events, we retain a mean of 6% of radial and 3% of the transverse component receiver functions with high signal‐to‐noise ratios and stable deconvolutions. We use the time domain algorithm by Ligorria and Ammon (1999) and a Gaussian filter factor of 3. Details of the processing and quality control methods are as in Schulte‐Pelkum and Mahan (2014a).…”

Section: Receiver Function Arrivals From Anisotropic and Dipping Cont...mentioning

confidence: 99%

Tectonic Inheritance With Dipping Faults and Deformation Fabric in the Brittle and Ductile Southern California Crust

et al. 2020

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Plate motions in Southern California have undergone a transition from compressional and extensional regimes to a dominantly strike‐slip regime in the Miocene. Strike‐slip motion is most easily accommodated on vertical faults, and major transform fault strands in the region are typically mapped as near vertical on the surface. However, some previous work suggests that these faults have a dipping geometry at depth. We analyze receiver function arrivals that vary harmonically with back azimuth at all available broadband stations in the region. The results show a dominant signal from contrasts in dipping foliation as well as dipping isotropic velocity contrasts from all crustal depths, including from the ductile middle to lower crust. We interpret these receiver function observations as a dipping fault‐parallel structural fabric that is pervasive throughout the region. The strike of these structures and fabrics is parallel to that of nearby fault surface traces. We also plot microseismicity on depth profiles perpendicular to major strike‐slip faults and find consistently NE dipping features in seismicity changing from near vertical (80–85°) on the Elsinore Fault in the Peninsular Ranges to 60–65° slightly further inland on the San Jacinto Fault to 50–55° on the San Andreas Fault. Taken together, the dipping features in seismicity and in rock fabric suggest that preexisting fabrics and faults may have acted as strain guides in the modern slip regime, with reactivation and growth of strike‐slip faults along northeast dipping fabrics both above and below the brittle‐ductile transition.

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“…We download seismograms of those earthquakes recorded by 244 broadband seismic stations in southern California from SCEDC. Then, RFs are extracted by deconvolving the vertical component from the radial and transverse components with a Gaussian filter parameter of 1.5 (equivalently with central frequency around 0.75 Hz) via a time‐domain iterative technique (Ligorria & Ammon, 1999). Moreover, we have collected RFs at 61 broadband stations from the EARS.…”

Section: Seismic Datamentioning

confidence: 99%

Moho Complexity in Southern California Revealed by Local PmP and Teleseismic Ps Waves

Yao

et al. 2022

JGR Solid Earth

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The Moho discontinuity represents a petrological boundary separating the Earth's silicic crust from the ultramafic mantle. It is the strongest seismic discontinuity within the Earth's outermost cold shell and even within the whole solid Earth except for the core-mantle boundary. The P-wave velocity contrast across the Moho in continental region can reach ∼20% in the IASP91 model (Kennett & Engdahl, 1991) or ∼15% in the CM95 model (Christensen & Mooney, 1995;Rabbel et al., 2013). Thus, seismic waves derived from the Moho discontinuity, which follow the first arrivals, usually dominate the early portion of a seismogram and serve as an important toolkit to decipher crustal structures (Grad & Tiira, 2009).Both active source surveys and passive seismic studies use Moho-related phases to constrain crustal structures. Active source surveys exploit local Moho-reflected waves PmP and Moho-refracted waves Pn (with frequency typically centered at ∼10 Hz) to investigate the Moho topography and crustal volumetric structure (Grad & Tiira, 2009;Mooney, 2010;Wright et al., 2013). Passive seismic studies sometimes use local Moho-reflected waves PmP or teleseismic Moho-converted waves Ps to image the crustal structure (Figure 1). Local PmP waves

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Iterative deconvolution and receiver-function estimation

Cited by 1,115 publications

References 14 publications

Lithospheric structure beneath the Qinling Orogenic Belt and its surrounding regions: Implications for regional lithosphere deformation

Lithospheric structure beneath the Qinling Orogenic Belt and its surrounding regions: Implications for regional lithosphere deformation

Tectonic Inheritance With Dipping Faults and Deformation Fabric in the Brittle and Ductile Southern California Crust

Moho Complexity in Southern California Revealed by Local PmP and Teleseismic Ps Waves

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