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Journal articles on the topic 'Teleseismic data'

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1

Frederiksen, A. W. "Transfer functions between teleseismic data components." Geophysical Journal International 221, no. 2 (2020): 1248–63. http://dx.doi.org/10.1093/gji/ggaa085.

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SUMMARY Different data components of teleseismic waveforms are related by transfer functions that depend only on receiver-side structure. This is the common basis of a number of teleseismic techniques, including receiver functions and shear wave splitting analysis. Common trace misfits used in these analysis techniques are shown to be equivalent to band-limited comparisons of real and synthetic transfer functions. The data deconvolution used in receiver function analysis leads to reduced structural resolution compared to direct trace-based misfits such as cross-convolution, with direct transfe
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2

Short, Kevin M. "Detection of Teleseismic Events in Seismic Sensor Data Using Nonlinear Dynamic Forecasting." International Journal of Bifurcation and Chaos 07, no. 08 (1997): 1833–45. http://dx.doi.org/10.1142/s0218127497001400.

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In this paper we consider the use of nonlinear dynamic (NLD) forecasting as a signal processing tool for seismic applications. The specific problem considered here arises in monitoring nuclear tests and nuclear treaty compliance, where the presence of ubiquitous background noise obscures the seismic signals associated with the tests. The problem is that the signal from a distant teleseismic event can be attenuated so that it is lost in the background noise, and since the noise overlaps the frequency band occupied by the teleseisms, frequency-based techniques provide only marginal improvements
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3

Fan, Chengliang, Gary L. Pavlis, Arthur B. Weglein, and Bogdan G. Nita. "Removing free-surface multiples from teleseismic transmission and constructed reflection responses using reciprocity and the inverse scattering series." GEOPHYSICS 71, no. 4 (2006): SI71—SI78. http://dx.doi.org/10.1190/1.2217369.

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We develop a new way to remove free-surface multiples from teleseismic P- transmission and constructed reflection responses. We consider two types of teleseismic waves with the presence of the free surface: One is the recorded waves under the real transmission geometry; the other is the constructed waves under a virtual reflection geometry. The theory presented is limited to 1D plane wave acoustic media, but this approximation is reasonable for the teleseismic P-wave problem resulting from the steep emergence angle of the wavefield. Using one-way wavefield reciprocity, we show how the teleseis
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4

Zhang, Jia, and Charles A. Langston. "Separating the scattered wavefield from teleseismic P using curvelets on the long beach array data set." Geophysical Journal International 220, no. 2 (2019): 1112–27. http://dx.doi.org/10.1093/gji/ggz487.

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SUMMARY A dense seismic array, composed of over 5000 stations with an average spacing close to 120 m was deployed in Long Beach, CA, by NodalSeismic and Signal Hill Petroleum as part of a survey associated with the Long Beach oilfield. Among many interesting wave propagation effects that have been reported by others, we observe that the coda of teleseismic P waves display waves caused by obvious local scattering from the Signal Hill popup structure between strands of the Newport-Inglewood fault. The density of the seismic array allows space-based methods, such as the Curvelet transform, to be
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5

Lewis, Brian T. R., and LeRoy M. Dorman. "Recording teleseisms on the seafloor; an example from the Juan de Fuca plate." Bulletin of the Seismological Society of America 88, no. 1 (1998): 107–16. http://dx.doi.org/10.1785/bssa0880010107.

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Abstract In 1991, during an experiment to compare low-frequency seismic noise on a basaltic and a sediment covered seafloor (NOBS), we recorded teleseisms on the Juan de Fuca ridge, the Gorda ridge, and the adjacent Cascadia Basin with the SNAG ocean-bottom seismometers (OBS). These data provide an indication of the type of data that may be obtained from future experiments to record teleseisms and may be helpful in designing these experiments and analyzing the results. We found that although seafloor noise is dominated by microseisms in the band 0.1 to 0.3 Hz, there is a well-developed minimum
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6

Amukti, Rian, and Wiwit Suryanto. "Analisa Receiver Function Teleseismic untuk Mendeteksi Moho pada Stasiun Bkb Data Meramex." INDONESIAN JOURNAL OF APPLIED PHYSICS 3, no. 02 (2016): 195. http://dx.doi.org/10.13057/ijap.v3i02.1272.

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<span>It has been done a research to determine internal earth using receiver function teleseismic analysis <span>method. This method have been done by using MERAMEX (MErapi Amphibious Experiment) data from <span>broadband seismometer BKB. Event of teleseismic is chosen from Honshu Japan with radius 30<span>o <span>and <span>magnitude 7.2. This research begun by analysing radial and vertical characteristic of teleseismic event<br /><span>and using bandpass filter with range 0.003 Hz – 0.5 Hz. Then Iteractive Deconvolution is used to get <span&g
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7

Li, Yingping, William Prothero, Clifford Thurber, and Rhett Butler. "Observations of ambient noise and signal coherency on the Island of Hawaii for teleseismic studies." Bulletin of the Seismological Society of America 84, no. 4 (1994): 1229–42. http://dx.doi.org/10.1785/bssa0840041229.

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Abstract Ambient seismic noise conditions at several sites on the Island of Hawaii have been studied by analyzing noise power spectral density (PSD) and signal-to-noise ratio (SNR) of teleseisms. Broadband digital waveform data used in this study were collected during Project ALOHA. Direct comparison of noise PSD and SNR of teleseisms simultaneously recorded at stations on Hawaii and at station KIP on Oahu indicates that the stations on Hawaii are quieter than station KIP on Oahu in the frequency band of 0.1 to 1 Hz, suggesting that the Island of Hawaii can provide better noise conditions than
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8

Shimizu, Kousuke, Yuji Yagi, Ryo Okuwaki, and Yukitoshi Fukahata. "Development of an inversion method to extract information on fault geometry from teleseismic data." Geophysical Journal International 220, no. 2 (2019): 1055–65. http://dx.doi.org/10.1093/gji/ggz496.

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SUMMARY Teleseismic waveforms contain information on fault slip evolution during an earthquake, as well as on the fault geometry. A linear finite-fault inversion method is a tool for solving the slip-rate function distribution under an assumption of fault geometry as a single or multiple-fault-plane model. An inappropriate assumption of fault geometry would tend to distort the solution due to Green’s function modelling errors. We developed a new inversion method to extract information on fault geometry along with the slip-rate function from observed teleseismic waveforms. In this method, as in
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9

Shragge, J., B. Artman, and C. Wilson. "Teleseismic shot-profile migration." GEOPHYSICS 71, no. 4 (2006): SI221—SI229. http://dx.doi.org/10.1190/1.2208263.

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The shot-profile migration approach of wave-equation migration generates subsurface images using the interferometric principle of crosscorrelating two passive wavefields. These wavefields are typically a source wavefield containing energy from an excited source and a receiver wavefield comprised of scattered-source wavefield energy by the discontinuous earth structure. Shot-profile migration can be recast as a novel way of imaging the earth’s lithosphere using teleseismic wavefield data, where the source wavefield is the directly arriving wavefront and the receiver wavefield is the following w
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10

Campman, Xander, and Stephane Rondenay. "Multichannel near‐array corrections for short‐period teleseismic data." Journal of the Acoustical Society of America 119, no. 5 (2006): 3308. http://dx.doi.org/10.1121/1.4786295.

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11

Baer, M., and U. Kradolfer. "An automatic phase picker for local and teleseismic events." Bulletin of the Seismological Society of America 77, no. 4 (1987): 1437–45. http://dx.doi.org/10.1785/bssa0770041437.

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Abstract An automatic detection algorithm has been developed which is capable of time P-phase arrivals of both local and teleseismic earthquakes, but rejects noise bursts and transient events. For each signal trace, the envelope function is calculated and passed through a nonlinear amplifier. The resulting signal is then subjected to a statistical analysis to yield arrival time, first motion, and a measure of reliability to be placed on the P-arrival pick. An incorporated dynamic threshold lets the algorithm become very sensitive; thus, even weak signals are timed precisely. During an extended
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12

Gusev, Alexander A., and Danila Chebrov. "On Scaling of Earthquake Rise‐Time Estimates." Bulletin of the Seismological Society of America 109, no. 6 (2019): 2741–45. http://dx.doi.org/10.1785/0120180214.

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Abstract The scaling behavior of rise times Tr determined within earthquake source inversions that used strong‐motion data is determined using estimates as accumulated in the SRCMOD database. The Tr versus M0 trend derived from this data set is close to logTr=1/3logM0+ const; this agrees with the assumption of self‐similarity of earthquake ruptures. No biasing effect of station distance on Tr was found. The result was compared to recent scaling estimates based on mass teleseismic inversions. Absolute levels of teleseismic and local inversions match well; the slope of the trend of teleseismic e
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13

Wald, David J., and Paul G. Somerville. "Variable-slip rupture model of the great 1923 Kanto, Japan, earthquake: Geodetic and body-waveform analysis." Bulletin of the Seismological Society of America 85, no. 1 (1995): 159–77. http://dx.doi.org/10.1785/bssa0850010159.

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Abstract The available geodetic and teleseismic data sets for the 1923 Kanto earthquake (Ms = 8.1) have been combined into a joint inversion for both temporal and spatial slip variations. We assumed an initial faulting model to be consistent with the geometry determined by Kanamori (1971) on the basis of first-motion data, aftershock area, and the amplitude of surface waves at teleseismic distances and also to enclose the slipped area estimated by Matsu'ura et al. (1980) from the geodetic data employed here. We then inverted for a heterogeneous distribution of slip of the fault plane. The leve
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14

Boué, P., P. Poli, M. Campillo, H. Pedersen, X. Briand, and P. Roux. "Teleseismic correlations of ambient seismic noise for deep global imaging of the Earth." Geophysical Journal International 194, no. 2 (2013): 844–48. http://dx.doi.org/10.1093/gji/ggt160.

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Abstract We present here a global analysis showing that wave paths probing the deepest part of the Earth can be obtained from ambient noise records. Correlations of seismic noise recorded at sensors located various distances apart provide new virtual seismograms for paths that are not present in earthquake data. The main arrivals already known for earthquake data are also present in teleseismic correlations sections, including waves that have propagated through the Earth's core. We present examples of applications of such teleseismic correlations to lithospheric imaging, study of the core mant
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15

Dewanto, Bondan Galih, Ramadhan Priadi, Leni Sophia Heliani, et al. "The 2022 Mw 6.1 Pasaman Barat, Indonesia Earthquake, Confirmed the Existence of the Talamau Segment Fault Based on Teleseismic and Satellite Gravity Data." Quaternary 5, no. 4 (2022): 45. http://dx.doi.org/10.3390/quat5040045.

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A Mw 6.1 earthquake on 25 February 2022, at around 8:39 a.m. local time, struck Pasaman Barat Regency, West Sumatra, Indonesia, and was felt in Singapore and Malaysia. The hypocenter of this earthquake was 12 km deep and preceded by an Mw 4.9 foreshock a few minutes earlier. The earthquakes originated on a blind fault and triggered a landslide at Mount Talamau. Herein, the slip distribution and asperities along the plane fault during the earthquake were examined by teleseismic inversion and the fault location was identified by Global Gravity Model plus (GGMPlus) satellite gravity data. The sli
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16

Clarke, Timothy J., and Paul G. Silver. "Estimation of crustal Poisson's ratio from broad band teleseismic data." Geophysical Research Letters 20, no. 3 (1993): 241–44. http://dx.doi.org/10.1029/92gl02922.

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17

Hofstetter, Abraham, Lea Feldman, and Yair Rotstein. "Crustal Structure of Israel: Constraints From Teleseismic and Gravity Data." Geophysical Journal International 104, no. 2 (1991): 371–79. http://dx.doi.org/10.1111/j.1365-246x.1991.tb02517.x.

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18

Hatzfeld, Denis, and Christophe Martin. "Intermediate depth seismicity in the Aegean defined by teleseismic data." Earth and Planetary Science Letters 113, no. 1-2 (1992): 267–75. http://dx.doi.org/10.1016/0012-821x(92)90224-j.

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19

Bryan, Carol J. "A possible triggering mechanism for large Hawaiian earthquakes derived from analysis of the 26 June 1989 Kilauea south flank sequence." Bulletin of the Seismological Society of America 82, no. 6 (1992): 2368–90. http://dx.doi.org/10.1785/bssa0820062368.

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Abstract Examination of short-period seismic data from the ML = 6.1 Kilauea south flank earthquake and aftershock sequence indicates that the rupture process in large Hawaiian earthquakes is more complex than previously modeled. In contrast to the low-angle thrust solution determined for the mainshock from long-period teleseismic body waves by other workers, I find an intermediate- to high-angle reverse solution; I find, however, that focal mechanisms for coastal aftershocks of ML > 3.0 are similar to the teleseismic mechanism for the mainshock. A difference in focal mechanisms determin
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20

Piana Agostinetti, Nicola, and Alberto Malinverno. "Assessing uncertainties in high-resolution, multifrequency receiver-function inversion: A comparison with borehole data." GEOPHYSICS 83, no. 3 (2018): KS11—KS22. http://dx.doi.org/10.1190/geo2017-0350.1.

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We use teleseismic P-to-S converted waves from a permanent station to estimate the uncertainties in a 1D elastic model of the shallow crust (0–7 km depth) obtained from the inversion of receiver function (RF) data. Our earth model consists of layers with a constant S-wave velocity [Formula: see text] and P- to S-wave velocity ratio ([Formula: see text]). We apply a Bayesian formulation and transdimensional Monte Carlo sampling to compute the posterior uncertainties of the earth model. The model uncertainties rely on a realistic representation of the data uncertainties, and we estimate directly
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21

Ambarsari, Riana, Madlazim ., and Utama Alan Deta. "PENCITRAAN RUPTURE GEMPABUMI DI LOMBOK TIMUR MW 6,9 PADA 19 AGUSTUS 2018 DENGAN METODE BACK PROJECTION." Inovasi Fisika Indonesia 10, no. 3 (2021): 24–32. http://dx.doi.org/10.26740/ifi.v10n3.p24-32.

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Abstrak
 Gempabumi yang terjadi di Lombok pada 19 Agustus 2018 berkekuatan Mw 6,9 merupakan gempa mainshock kedua sebagai akibat dari rangkaian gempabumi Lombok pada Juli – Agustus 2018. Penelitian ini bertujuan untuk meneliti karakteristik rupture gempabumi di Lombok Timur Mw 6,9 yang terjadi pada tanggal 19 Agustus 2018 dari hasil pencitraan arah, kecepatan, durasi, dan panjang rupture gempabumi. Metode yang digunakan dalam penelitian ini dengan teknik pemrosesan array teleseismik menggunakan metode Multiple Signal Back-Projection (MUSICBP) dalam software MATLAB. Data yang digunakan ada
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22

Gaol, Yosua H. Lumban, and Sandy K. Suhardja. "Hasil Awal Penentuan Waktu Tiba Gelombang-P Gempa Menggunakan Machine Learning." Jurnal Geofisika 20, no. 2 (2022): 76. https://doi.org/10.36435/jgf.v20i2.538.

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Seiring dengan bertambahnya data seismik, dibutuhkan pula inovasi untuk mempercepat proses penentuan waktu tiba gelombang seismik. Pada penelitian ini digunakan metode artificial neural network untuk menentukan waktu tiba gelombang P dari data teleseismik secara otomatis, dengan hasil yang mirip dan mendekati saat picking gelombang secara manual. Atribut yang digunakan adalah STA/LTA dan amplitudo sesaat (envelope) yang digunakan sebagai parameter input. STA/LTA digunakan untuk memperjelas kontras antara sinyal gempa dan noise, dengan menghitung rata-rata dari rasio amplitudo dari dua jendela
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23

Steck, Lee K., and William A. Prothero. "Observations of direct P-wave slowness and azimuth anomalies for teleseisms recorded in Long Valley caldera, California." Bulletin of the Seismological Society of America 83, no. 5 (1993): 1391–419. http://dx.doi.org/10.1785/bssa0830051391.

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Abstract Using particle motion, frequency-wavenumber analysis, and planewave fitting, we observe large anomalies in the bearing and apparent velocity of 0.5 to 1.0 Hz teleseismic P-waves incident at stations near the resurgent dome of Long Valley caldera, California. Our 3-component regional and teleseismic data come from three 2-mo deployments: (1) a 10 station, 2.9-km aperture array, (2) a 5 station, 1.9-km aperture array, and (3) a 3 station network, spanning about 5 km. We find stacked particle motion to be the most informative polarization method when the signal-to-noise ratio (SNR) is hi
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24

Hwang, Lorraine J., and Hiroo Kanamori. "Teleseismic and strong-motion source spectra from two earthquakes in eastern Taiwan." Bulletin of the Seismological Society of America 79, no. 4 (1989): 935–44. http://dx.doi.org/10.1785/bssa0790040935.

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Abstract The 20 May and 14 November 1986 Hualien earthquakes occurred in a seismically active region of Taiwan. Locally determined focal mechanisms and aftershock patterns from the Taiwan Telemetered Seismographic Network indicate that both earthquakes occurred on steeply dipping reverse faults that trend NNE. This agrees with teleseismic first-motion data for the May event but not for the November event. This discrepancy is due to a moderate foreshock before the November event. Surface-wave analysis gives a solution for the November event of: dip 57°, rake 100°, and strike 43°, which is simil
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25

Neely, James S., Seth Stein, and Bruce D. Spencer. "Large Uncertainties in Earthquake Stress-Drop Estimates and Their Tectonic Consequences." Seismological Research Letters 91, no. 4 (2020): 2320–29. http://dx.doi.org/10.1785/0220200004.

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Abstract Earthquake stress drop, the stress change on a fault due to an earthquake, is important for seismic hazard analysis because it controls the level of high-frequency ground motions that damage structures. Numerous studies report that stress drops vary by tectonic environment, providing insight into a region’s seismic hazard. Here, we show that teleseismic stress-drop estimates have large uncertainties that make it challenging to distinguish differences between the stress drops of different earthquakes. We compared stress drops for ∼900 earthquakes derived from two independent studies us
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26

Portner, Daniel Evan, and Gavin P. Hayes. "Incorporating teleseismic tomography data into models of upper mantle slab geometry." Geophysical Journal International 215, no. 1 (2018): 325–32. http://dx.doi.org/10.1093/gji/ggy279.

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SUMMARY Earthquake-based models of slab geometry are limited by the distribution of earthquakes within a subducting slab, which is often heterogeneous. The fast seismic velocity signature of slabs in tomography studies is independent of the distribution of earthquakes within the slab, providing a critical constraint on slab geometry when earthquakes are absent. In order to utilize this constraint, researchers typically hand-contour images of subducting slabs in tomography models, leading to a subjective final slab model. With this paper, we present an automated procedure for extracting slab ge
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27

Craig, T. J. "Accurate Depth Determination for Moderate‐Magnitude Earthquakes Using Global Teleseismic Data." Journal of Geophysical Research: Solid Earth 124, no. 2 (2019): 1759–80. http://dx.doi.org/10.1029/2018jb016902.

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28

Shimizu, Kousuke, Yuji Yagi, Ryo Okuwaki, and Yukitoshi Fukahata. "Construction of fault geometry by finite-fault inversion of teleseismic data." Geophysical Journal International 224, no. 2 (2020): 1003–14. http://dx.doi.org/10.1093/gji/ggaa501.

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SUMMARY Conventional seismic source inversion estimates the earthquake rupture process on an assumed fault plane that is determined a priori. It has been a difficult challenge to obtain the fault geometry together with the rupture process by seismic source inversion because of the nonlinearity of the inversion technique. In this study, we propose an inversion method to estimate the fault geometry and the rupture process of an earthquake from teleseismic P waveform data, through an elaboration of our previously published finite-fault inversion analysis (Shimizu et al. 2020). That method differs
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29

Souriau, Annie, Sébastien Chevrot, and Carme Olivera. "A new tomographic image of the Pyrenean lithosphere from teleseismic data." Tectonophysics 460, no. 1-4 (2008): 206–14. http://dx.doi.org/10.1016/j.tecto.2008.08.014.

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30

Wald, David J., Thomas H. Heaton, and K. W. Hudnut. "The slip history of the 1994 Northridge, California, earthquake determined from strong-motion, teleseismic, GPS, and leveling data." Bulletin of the Seismological Society of America 86, no. 1B (1996): S49—S70. http://dx.doi.org/10.1785/bssa08601b0s49.

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Abstract We present a rupture model of the Northridge earthquake, determined from the joint inversion of near-source strong ground motion recordings, P and SH teleseismic body waves, Global Positioning System (GPS) displacement vectors, and permanent uplift measured along leveling lines. The fault is defined to strike 122° and dip 40° to the south-southwest. The average rake vector is determined to be 101°, and average slip is 1.3 m; the peak slip reaches about 3 m. Our estimate of the seismic moment is 1.3 ± 0.2 × 1026 dyne-cm (potency of 0.4 km3). The rupture area is small relative to the ov
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31

Daout, Simon, Andreas Steinberg, Marius Paul Isken, Sebastian Heimann, and Henriette Sudhaus. "Illuminating the Spatio-Temporal Evolution of the 2008–2009 Qaidam Earthquake Sequence with the Joint Use of Insar Time Series and Teleseismic Data." Remote Sensing 12, no. 17 (2020): 2850. http://dx.doi.org/10.3390/rs12172850.

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Inferring the geometry and evolution of an earthquake sequence is crucial to understand how fault systems are segmented and interact. However, structural geological models are often poorly constrained in remote areas and fault inference is an ill-posed problem with a reliability that depends on many factors. Here, we investigate the geometry of the Mw 6.3 2008 and 2009 Qaidam earthquakes, in northeast Tibet, by combining InSAR time series and teleseismic data. We conduct a multi-array back-projection analysis from broadband teleseismic data and process three overlapping Envisat tracks covering
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32

Courboulex, F., M. A. Santoyo, J. F. Pacheco, and S. K. Singh. "The 14 September 1995 (M = 7.3) Copala, Mexico, earthquake: A source study using teleseismic, regional, and local data." Bulletin of the Seismological Society of America 87, no. 4 (1997): 999–1010. http://dx.doi.org/10.1785/bssa0870040999.

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Abstract We analyze source characteristics of the 14 September 1995, Copala, Mexico, earthquake (M = 7.3) using teleseismic, regional, and local seismograms. In the analysis of the teleseismic and the regional seismic waves, we apply the empirical Green's function (EGF) technique. The recording of an appropriate aftershock is taken as the EGF and is used to deconvolve the mainshock seismogram, thus obtaining an apparent far-field source-time function at each station. The deconvolution has been done using surface waves. For teleseismic data, we apply a spectral deconvolution method that enables
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33

Murphy, J. R., and C. B. Archambeau. "Variability in explosion body-wave magnitudes: An analysis of the RULISON/GASBUGGY anomaly." Bulletin of the Seismological Society of America 76, no. 4 (1986): 1087–113. http://dx.doi.org/10.1785/bssa0760041087.

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Abstract An analysis of the RULISON/GASBUGGY mb anomaly is presented which encompasses comparative studies of near-regional, regional, and teleseismic data recorded from these two explosions, as well as theoretical simulation analyses of selected near-regional and teleseismic data sets. Previously proposed explanations for this mb anomaly, such as differences in explosive source coupling and variations in upper mantle attenuation beneath the two test sites, are critically examined and shown to be inconsistent with various aspects of the observed data. However, both long-period and short-period
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34

Bent, Allison L., Donald V. Helmberger, Richard J. Stead, and Phyllis Ho-Liu. "Waveform modeling of the November 1987 Superstition Hills earthquakes." Bulletin of the Seismological Society of America 79, no. 2 (1989): 500–514. http://dx.doi.org/10.1785/bssa0790020500.

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Abstract Long-period body-wave data recorded at teleseismic distances and strong-motion data at Pasadena for the Superstition Hills earthquakes of 24 November 1987 are modeled to obtain the source parameters. We will refer to the event that occurred at 0153 UT as EQ1 and the event at 1316 UT as EQ2. At all distances the first earthquake appears to be a simple left-lateral strike-slip event on a fault striking NE. It is a relatively deep event with a source depth of 10 km. It has a teleseismic moment of 2.7 ×1025 dyne cm. The second and more complex event was modeled in two ways: by using EQ1 a
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35

Owens, Thomas J., and Robert S. Crosson. "Shallow structure effects on broadband teleseismic P waveforms." Bulletin of the Seismological Society of America 78, no. 1 (1988): 96–108. http://dx.doi.org/10.1785/bssa0780010096.

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Abstract The first 5 sec of source-equalized P-wave receiver functions from an array of broadband portable instruments located about 50 km from the coast in western Washington are strongly influenced by very shallow structure (depths less than 3 km). These data display behavior associated with a dipping, high-velocity contrast interface at shallow depths. The direct P wave and the P-to-S converted phase vary strongly with backazimuth producing an apparent delay in first arriving energy at western backazimuths. These patterns are attributed to a shallow contact between low-velocity sandstones a
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36

Qin, Lei, Pieter-Ewald Share, Hongrui Qiu, Amir A. Allam, Frank L. Vernon, and Yehuda Ben-Zion. "Internal structure of the San Jacinto fault zone at the Ramona Reservation, north of Anza, California, from dense array seismic data." Geophysical Journal International 224, no. 2 (2020): 1225–41. http://dx.doi.org/10.1093/gji/ggaa482.

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SUMMARY We image the internal structure of the San Jacinto fault zone (SJFZ) near Anza, California, with seismic data recorded by two dense arrays (RA and RR) from ∼42 000 local and ∼180 teleseismic events occurring between 2012 and 2017. The RA linear array has short aperture (∼470 m long with 12 strong motion sensors) and recorded for the entire analysed time window, whereas the RR is a large three-component nodal array (97 geophones across a ∼2.4 km × 1.4 km area) that operated for about a month in September–October 2016. The SJFZ at the site contains three near-parallel surface traces F1,
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Afnimar, Afnimar, Reiji Kobayashi, and Danny Hilman Natawidjaja. "Source Processes of the March 2007 Singkarak Earthquakes Inferred from Teleseismic Data." Journal of Mathematical and Fundamental Sciences 46, no. 2 (2014): 159–68. http://dx.doi.org/10.5614/j.math.fund.sci.2014.46.2.4.

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38

Gorbatov, A., G. Suárez, V. Kostoglodov, and E. Gordeev. "A double-planed seismic zone in Kamchatka from local and teleseismic data." Geophysical Research Letters 21, no. 16 (1994): 1675–78. http://dx.doi.org/10.1029/94gl01593.

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39

Basuyau, C., M. Diament, C. Tiberi, G. Hetényi, J. Vergne, and A. Peyrefitte. "Joint inversion of teleseismic and GOCE gravity data: application to the Himalayas." Geophysical Journal International 193, no. 1 (2013): 149–60. http://dx.doi.org/10.1093/gji/ggs110.

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40

Uski, Marja. "Event detection and location performance of the FINESA array in Finland." Bulletin of the Seismological Society of America 80, no. 6B (1990): 1818–32. http://dx.doi.org/10.1785/bssa08006b1818.

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Abstract The experimental seismic array FINESA in Finland is designed to monitor weak seismic events at regional and teleseismic distances. The array geometry currently comprises 15 short-period vertical seismometers in three concentric rings (A-, B-, and C-rings), with a diameter of the outer ring of about 2 km. In late 1989, the data acquisition system of the array was completely modernized. Signals are now transferred continuously via high-speed telephone lines to the processing centers at the Institute of Seismology in Helsinki and NORSAR in Norway, therefore allowing automatic real-time p
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41

Engdahl, E. Robert, Rob van der Hilst, and Raymond Buland. "Global teleseismic earthquake relocation with improved travel times and procedures for depth determination." Bulletin of the Seismological Society of America 88, no. 3 (1998): 722–43. http://dx.doi.org/10.1785/bssa0880030722.

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Abstract We relocate nearly 100,000 events that occurred during the period 1964 to 1995 and are well-constrained teleseismically by arrival-time data reported to the International Seismological Centre (ISC) and to the U.S. Geological Survey's National Earthquake Information Center (NEIC). Hypocenter determination is significantly improved by using, in addition to regional and teleseismic P and S phases, the arrival times of PKiKP, PKPdf, and the teleseismic depth phases pP, pwP, and sP in the relocation procedure. A global probability model developed for later-arriving phases is used to indepe
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42

Mendoza, Carlos, and Stephen H. Hartzell. "Slip distribution of the 19 September 1985 Michoacan, Mexico, earthquake: Near-source and teleseismic constraints." Bulletin of the Seismological Society of America 79, no. 3 (1989): 655–69. http://dx.doi.org/10.1785/bssa0790030655.

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Abstract We simultaneously invert the strong-motion velocity records and the long- and intermediate-period teleseismic P waveforms of the 19 September 1985 Michoacan, Mexico, earthquake to recover the distribution of slip on the fault using a point-by-point constrained and stabilized, least-squares inversion method. A fault plane with strike fixed at 300° and dip fixed at 14° is placed in the region of the earthquake hypocenter and divided into 120 subfaults. Rupture is assumed to propagate at a velocity of 2.6 km/sec away from the hypocenter. Synthetic near-source ground motions and teleseism
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43

Wald, David J., Hiroo Kanamori, Donald V. Helmberger, and Thomas H. Heaton. "Source study of the 1906 San Francisco earthquake." Bulletin of the Seismological Society of America 83, no. 4 (1993): 981–1019. http://dx.doi.org/10.1785/bssa0830040981.

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Abstract All quality teleseismic recordings of the great 1906 San Francisco earthquake archived in the 1908 Carnegie Report by the State Earthquake Investigation Commission were scanned and digitized. First order results were obtained by comparing complexity and amplitudes of teleseismic waveforms from the 1906 earthquake with well calibrated, similarly located, more recent earthquakes (1979 Coyote Lake, 1984 Morgan Hill, and 1989 Loma Prieta earthquakes) at nearly co-located modern stations. Peak amplitude ratios for calibration events indicated that a localized moment release of about 1 to 1
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44

Wapenaar, Kees, Joost van der Neut, and Elmer Ruigrok. "Passive seismic interferometry by multidimensional deconvolution." GEOPHYSICS 73, no. 6 (2008): A51—A56. http://dx.doi.org/10.1190/1.2976118.

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We introduce seismic interferometry of passive data by multidimensional deconvolution (MDD) as an alternative to the crosscorrelation method. Interferometry by MDD has the potential to correct for the effects of source irregularity, assuming the first arrival can be separated from the full response. MDD applications can range from reservoir imaging using microseismicity to crustal imaging with teleseismic data.
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45

Weidle, C., and S. Widiyantoro. "Improving depth resolution of teleseismic tomography by simultaneous inversion of teleseismic and globalP-wave traveltime data-application to the Vrancea region in Southeastern Europe." Geophysical Journal International 162, no. 3 (2005): 811–23. http://dx.doi.org/10.1111/j.1365-246x.2005.02649.x.

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46

Clark, R. A., and R. G. Pearce. "Identification of multiple underground explosions using the relative amplitude method." Bulletin of the Seismological Society of America 78, no. 2 (1988): 885–97. http://dx.doi.org/10.1785/bssa0780020885.

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Abstract The relative amplitude method is applied to the few available good quality teleseismic P-wave seismograms from five presumed double nuclear explosions and one known multiple chemical explosion, under the “naive” assumption that the observed multiple arrivals correspond to P, pP, and sP from a single earthquake—an interpretation which is indeed consistent with the body-wave arrival time data in most cases. The purpose is to investigate the ability of relative amplitudes to identify correctly such multiple events for which established discrimination criteria may give earthquake-like or
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47

Mellors, R. J., F. L. Vernon, G. L. Pavlis, et al. "The MS = 7.3 1992 Suusamyr, Kyrgyzstan, earthquake: 1. Constraints on fault geometry and source parameters based on aftershocks and body-wave modeling." Bulletin of the Seismological Society of America 87, no. 1 (1997): 11–22. http://dx.doi.org/10.1785/bssa0870010011.

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Abstract We investigated the Suusamyr, Kyrgyzstan, earthquake of 19 August 1992, using aftershock data, teleseismic body-wave modeling, and field observations. Aftershocks were recorded by the IRIS Kyrgyzstan broadband network, a temporary six-station aftershock network, and a regional network operated by the Kyrgyz Institute of Seismology. The aftershocks, which range in depth from the surface to 18 km, defined a 50 ± 10-km-long rupture zone that dips 50° ± 13° to the south and strikes roughly east-west. The base of the eastern end of the aftershock zone shallowed to the east along strike and
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48

Bhat, G. M., Shiv Jyoti Pandey, Shveta Puri, Neha Raina, and Sowrav Saikia. "Crustal Thickness Variation across the Jammu and Kashmir Region from Teleseismic Receiver Function Analysis." Journal Of The Geological Society Of India 101, no. 6 (2025): 821–26. https://doi.org/10.17491/jgsi/2025/174167.

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ABSTRACT Analysis of teleseismic waveform data from nine permanent broadband seismic stations installed in the Jammu and Kashmir region provides an image of the underthrusting Indian plate beneath the Western Himalaya. In this study, P-wave teleseismic receiver functions through the iterative time domain deconvolution method were used to find Moho undulation, crustal thickness and physico-chemical composition for the Outer-, Lesser- and Tethys Himalayan tectonic domains of the region. Our results show a prominent and gradual increase in crustal thickness across these tectonic domains from sout
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Wolf, Felix N., Dietrich Lange, Anke Dannowski, et al. "3D crustal structure of the Ligurian Basin revealed by surface wave tomography using ocean bottom seismometer data." Solid Earth 12, no. 11 (2021): 2597–613. http://dx.doi.org/10.5194/se-12-2597-2021.

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Abstract. The Liguro-Provençal basin was formed as a back-arc basin of the retreating Calabrian–Apennines subduction zone during the Oligocene and Miocene. The resulting rotation of the Corsica–Sardinia block is associated with rifting, shaping the Ligurian Basin. It is still debated whether oceanic or atypical oceanic crust was formed or if the crust is continental and experienced extreme thinning during the opening of the basin. We perform ambient noise tomography, also taking into account teleseismic events, using an amphibious network of seismic stations, including 22 broadband ocean botto
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50

Kanamori, Hiroo, Zachary E. Ross, and Luis Rivera. "Estimation of radiated energy using the KiK-net downhole records—old method for modern data." Geophysical Journal International 221, no. 2 (2020): 1029–42. http://dx.doi.org/10.1093/gji/ggaa040.

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SUMMARY We use KiK-net (NIED) downhole records to estimate the radiated energy, ER, of 29 Japanese inland earthquakes with a magnitude range from Mw = 5.6 to 7.0. The method is based on the work of Gutenberg and Richter in which the time integral of S-wave ground-motion velocity-squared is measured as a basic metric of the radiated energy. Only stations within a distance of 100 km are used to minimize complex path and attenuation effects. Unlike the teleseismic method that uses mainly P waves, the use of S waves which carry more than 95 per cent of the radiated energy allows us to obtain robus
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