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Journal articles on the topic 'Teleseism'

Author: Grafiati

Published: 10 March 2023

Last updated: 19 July 2025

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1

Dall'Osto, David R. "On the potential of using Distributed Acoustic Sensing (DAS) to build teleseism based ocean-tomography network." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A175. http://dx.doi.org/10.1121/10.0023177.

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The sound from marine teleseisms rank among some of the loudest in Earth’s Oceans, typically radiated into the ocean near the epicenter and propagating across the entire ocean basin. Acoustic sensing on ocean observatories provide a critical path to better understand origins of these low-frequency sound waves known as T-phases, and structure of the ocean over the megameter propagation through the ocean. Of the emerging technologies implemented on these observatories, distributed acoustic sensing (DAS) has the potential to revolutionize marine seismoacoustics. DAS can be implemented on unused o

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2

van Ginkel, Janneke, Elmer Ruigrok, and Rien Herber. "Using horizontal-to-vertical spectral ratios to construct shear-wave velocity profiles." Solid Earth 11, no. 6 (2020): 2015–30. http://dx.doi.org/10.5194/se-11-2015-2020.

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Abstract. For seismic hazard assessment and earthquake hypocentre localization, detailed shear-wave velocity profiles are an important input parameter. Here, we present a method to construct a shear-wave velocity profiles for a deep unconsolidated sedimentary layer by using strong teleseismic phases and the ambient noise field. Gas extraction in the Groningen field, in the northern part of the Netherlands, is causing low-magnitude, induced seismic events. This region forms an excellent case study due to the presence of a permanent borehole network and detailed subsurface knowledge. Instead of

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3

Evans, John R., and Andrew M. Pitt. "Reliable automatic detection of long-period volcanic earthquakes at Long Valley caldera, California." Bulletin of the Seismological Society of America 85, no. 5 (1995): 1518–22. http://dx.doi.org/10.1785/bssa0850051518.

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Abstract Capturing the rare long-period (LP) volcanic earthquakes occurring in and near Long Valley caldera, California, is important to ongoing volcanic-hazards monitoring. It is difficult, however, because LP events are weak, emergent, and almost devoid of energy above a few hertz. Automatic systems designed for tectonic earthquakes routinely fail to capture LP events. We applied a PC-based teleseism-specific event-detection computer program to capturing these events. Retuning the software for LP events involved only changing parameters originally designed for change in this algorithm. Our r

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Olsen, Kim B., James C. Pechmann, and Gerard T. Schuster. "Simulation of 3D elastic wave propagation in the Salt Lake Basin." Bulletin of the Seismological Society of America 85, no. 6 (1995): 1688–710. http://dx.doi.org/10.1785/bssa0850061688.

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Abstract We have used a 3D finite-difference method to model 0.2 to 1.2 Hz elastodynamic site amplification in the Salt Lake Valley, Utah. The valley is underlain by a sedimentary basin, which in our model has dimensions of 48 by 25 by 1.3 km. Simulations are carried out for a P wave propagating vertically from below and for P waves propagating horizontally to the north, south, east, and west in a two-layer model consisting of semi-consolidated sediments surrounded by bedrock. Results show that in general, sites with the largest particle velocities, cumulative kinetic energies, duration times

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5

Vasco, D. W. "Deriving source-time functions using principal component analysis." Bulletin of the Seismological Society of America 79, no. 3 (1989): 711–30. http://dx.doi.org/10.1785/bssa0790030711.

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Abstract Factors such as source complexity, microseismic noise, and lateral heterogeneity all introduce nonuniqueness into the source-time function. The technique of principal component analysis is used to factor the moment tensor into a set of orthogonal source-time functions. This is accomplished through the singular value decomposition of the time-varying moment tensor. The adequacy of assuming a single source-time function may then be examined through the singular values of the decomposition. The F test can also be used to assess the significance of the various principal component basis fu

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6

Privitera, Laura, Ferruccio Ferrari, Angelo Ferro, and Salvatore Gambino. "Mt. Etna Tilt Signals Associated with February 6, 2023, M=7.8 and M=7.5 Turkey Earthquakes." International Journal of Geophysics 2023 (December 29, 2023): 1–9. http://dx.doi.org/10.1155/2023/9030495.

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On February 6, 2023, at 01 : 17 UTC, a M=7.8 earthquake struck the southern area of Turkey near Gaziantep town and was followed by a second earthquake of M=7.5 at 10 : 24 UTC with the epicenter in Elbistan city. Both events were associated with the Anatolian Fault System and have claimed over 50,000 victims, as reported by the Disaster and Emergency Management Authority, and caused serious damage in the regions of southern Turkey and northern Syria. Seismic waves related to strong Turkey earthquakes have been recorded both by seismic stations throughout the globe and on other devices such as t

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7

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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8

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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9

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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10

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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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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Sari, Sendy Oktaviana, and Madlazim . "ANALISIS DINAMIKA RUPTURE GEMPABUMI PADA 5 AGUSTUS 2018 DI LOMBOK UTARA Mw 6,9 MENGGUNAKAN METODE MUSICBP." Inovasi Fisika Indonesia 10, no. 3 (2021): 33–38. http://dx.doi.org/10.26740/ifi.v10n3.p33-38.

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Abstrak Gempa bumi Mw = 6,9 yang terjadi di Lombok Utara pada 5 Agustus 2018 disebabkan karena adanya aktivitas seismik dari sesar Flores. Penelitian ini bertujuan untuk mengestimasi rupture gempabumi yang terjadi di daerah Lombok Utara, Nusa Tenggara Barat. Parameter rupture yang diestimasi berupa nilai durasi, panjang, kecepatan, dan arah rupture. Metode yang digunakan ialah Multiple Signal Back-Projection (MUSICBP) dengan menggunakan filter band pass pada rentang 0,25 Hz – 1 Hz. Data yang digunakan didapatkan dari website IRIS Wilber 3 berupa format SAC dengan jarak epicentral berupa

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13

Gong, Wenfei, Hao Hu, Aiguo Ruan, Xiongwei Niu, Wei Wang, and Yong Tang. "Numerical Modeling on Ocean-Bottom Seismograph P-Wave Receiver Function to Analyze Influences of Seawater and Sedimentary Layers." Journal of Marine Science and Engineering 12, no. 11 (2024): 2053. http://dx.doi.org/10.3390/jmse12112053.

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It is challenging to apply the receiver function method to teleseisms recorded by ocean-bottom seismographs (OBSs) due to a specific working environment that differs from land stations. Teleseismic incident waveforms reaching the area beneath stations are affected by multiple reflections generated by seawater and sediments and noise resulting from currents. Furthermore, inadequate coupling between OBSs and the seabed basement and the poor fidelity of OBSs reduce the signal-to-noise ratio (SNR) of seismograms, leading to the poor quality of extracted receiver functions or even the wrong deconvo

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14

Kohler, Monica D., and Paul M. Davis. "Crustal thickness variations in southern California from Los Angeles Region Seismic Experiment passive phase teleseismic travel times." Bulletin of the Seismological Society of America 87, no. 5 (1997): 1330–44. http://dx.doi.org/10.1785/bssa0870051330.

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Abstract The goal of the 1993 Los Angeles Region Seismic Experiment (LARSE93) passive phase was to collect waveform data from local and distant earthquakes to study lower crust and upper mantle structural features in southern California, particularly under the San Gabriel Mountains and San Andreas fault. During LARSE93, approximately 88 stations were deployed in a 175-km-long, linear array across the Los Angeles basin, San Gabriel Mountains, and Mojave Desert northeast of Los Angeles. During the four weeks of continuous recording, teleseismic events recorded at each site provided a wide range

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15

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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16

Kennett, B. L. N., and M. S. Sambridge. "Earthquake location — genetic algorithms for teleseisms." Physics of the Earth and Planetary Interiors 75, no. 1-3 (1992): 103–10. http://dx.doi.org/10.1016/0031-9201(92)90121-b.

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17

Liu, Shaolin, Dinghui Yang, Xingpeng Dong, Qiancheng Liu, and Yongchang Zheng. "Element-by-element parallel spectral-element methods for 3-D teleseismic wave modeling." Solid Earth 8, no. 5 (2017): 969–86. http://dx.doi.org/10.5194/se-8-969-2017.

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Abstract. The development of an efficient algorithm for teleseismic wave field modeling is valuable for calculating the gradients of the misfit function (termed misfit gradients) or Fréchet derivatives when the teleseismic waveform is used for adjoint tomography. Here, we introduce an element-by-element parallel spectral-element method (EBE-SEM) for the efficient modeling of teleseismic wave field propagation in a reduced geology model. Under the plane-wave assumption, the frequency–wavenumber (FK) technique is implemented to compute the boundary wave field used to construct the boundary condi

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18

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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19

Morozov, Igor B., Elena A. Morozova, Scott B. Smithson, and Leonid N. Solodilov. "On the nature of the teleseismic Pn phase observed on the ultralong-range profile “Quartz,” Russia." Bulletin of the Seismological Society of America 88, no. 1 (1998): 62–73. http://dx.doi.org/10.1785/bssa0880010062.

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Abstract The most prominent secondary phase observed in the records from the ultralong profile “Quartz” crossing northern Eurasia is the high-frequency long-range (teleseismic) Pn. This phase, propagating with the group velocity of about 8.1 to 8.2 km/sec to over 3000 km distances, dominates the records within the frequency range above about 5 Hz. Within this teleseismic Pn, we distinguish onsets of several branches having higher apparent velocities between 8.5 and 8.6 km/sec. Using travel-time modeling techniques, we associate the teleseismic Pn with whispering gallery modes traveling within

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20

Pirli, M., and J. Schweitzer. "Regional and teleseismic event detection capability of the small-aperture Tripoli seismic array, Greece." Bulletin of the Geological Society of Greece 40, no. 3 (2018): 1246. http://dx.doi.org/10.12681/bgsg.16877.

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The Tripoli Seismic Array (TRISAR) is a small-aperture array designed to monitor and locate the seismicity in the area of Greece. In this study, its detection capabilities are discussed for regional and teleseismic events. A reference event list is compiled, consisting of events ofmb>5.0for regional and teleseismic distances (A>6°), according to the ISC On-line Bulletin. TRISAR automatically detected approximately 25% of these events over the entire investigated distance range. Although TRISAR slowness vector residuals are rather large, as expected for an array of such small aperture, th

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Dijkstra, H. Paul, Emin Ergen, Louis Holtzhausen, et al. "Remote assessment in sport and exercise medicine (SEM): a narrative review and teleSEM solutions for and beyond the COVID-19 pandemic." British Journal of Sports Medicine 54, no. 19 (2020): 1162–67. http://dx.doi.org/10.1136/bjsports-2020-102650.

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BackgroundThe COVID-19 pandemic forces sport and exercise medicine (SEM) physicians to think differently about the clinical care of patients. Many rapidly implement eHealth and telemedicine solutions specific to SEM without guidance on how best to provide these services.AimThe aim of this paper is to present some guiding principles on how to plan for and perform an SEM consultation remotely (teleSEM) based on a narrative review of the literature. A secondary aim is to develop a generic teleSEM injury template.ResultseHealth and telemedicine are essential solutions to effective remote patient c

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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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Moshou, A., P. Papadimitriou, and K. Makropoulos. "Teleseismic body wave inversion." Bulletin of the Geological Society of Greece 40, no. 3 (2018): 1177. http://dx.doi.org/10.12681/bgsg.16854.

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Body wave inversion methodology is developed to determine the earthquake source parameters in teleseismic distances. The generalized inversion technique, based on the singular value decomposition method, is applied to determine the deviatone moment tensor which is decomposed in two parts. The first one is related to the pure Double Couple (DC) and the second one to the compensated linear vector dipoles (CLVD). The best solution of the overdetermined problem is obtained by minimizing the misfit between observed and synthetic seismograms. The proposed methodology is applied for the four stronges

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Nishida, K., and R. Takagi. "Teleseismic S wave microseisms." Science 353, no. 6302 (2016): 919–21. http://dx.doi.org/10.1126/science.aaf7573.

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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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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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Pratt, Thomas L., and Lisa S. Schleicher. "Characterizing Ground-Motion Amplification by Extensive Flat-Lying Sediments: The Seismic Response of the Eastern U.S. Atlantic Coastal Plain Strata." Bulletin of the Seismological Society of America 111, no. 4 (2021): 1795–823. http://dx.doi.org/10.1785/0120200328.

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ABSTRACT We examine the effects that Atlantic Coastal Plain (ACP) strata have on ground motions in the eastern and southeastern United States. The ACP strata consist of widespread, nearly flat-lying sediments, the upper portions of which are unconsolidated or semiconsolidated. The ACP sediments are deposited primarily on crystalline basement rocks, creating large velocity and density contrasts with the underlying rocks. At 211 sites on ACP strata to thicknesses of 4000 m, we compute spectral ratios relative to the average of four bedrock sites west or northwest of the strata. Sites consist of

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Bostock, M. G., D. W. Eaton, and D. B. Snyder. "Teleseismic studies of the Canadian landmass: Lithoprobe and its legacyThis article is one of a series of papers published in this Special Issue on the theme Lithoprobe — parameters, processes, and the evolution of a continent.ESS Contribution 20090305." Canadian Journal of Earth Sciences 47, no. 4 (2010): 445–61. http://dx.doi.org/10.1139/e09-040.

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Although teleseismic research was only modestly represented within the Lithoprobe program, the analysis of deeper lithospheric structure beneath Canada using teleseismic methods has intensified in the past decade. This development is due in large part to a legacy of improved understanding of shallower lithospheric structures afforded by Lithoprobe. Most recent teleseismic experiments have been conducted in regions lying within Lithoprobe transects and coverage is particularly good in the Slave Province, southern and eastern Ontario, and southwestern British Columbia. A number of key results ha

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Sun, Weijia, and B. L. N. Kennett. "Receiver structure from teleseisms: Autocorrelation and cross correlation." Geophysical Research Letters 43, no. 12 (2016): 6234–42. http://dx.doi.org/10.1002/2016gl069564.

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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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Padhy, Simanchal. "Seismic Response of the Hi-Net Sites in Japan to Incident Teleseismic P-Waves from the 2008 Wenchuan Earthquake." Journal Of The Geological Society Of India 101, no. 6 (2025): 850–54. https://doi.org/10.17491/jgsi/2025/174172.

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ABSTRACT We study the seismic response of the near-surface to teleseismic normal-incident plane P-waves at Hi-net sites in Japan. We analyzed vertical component teleseismic P-wave forms of the 2008 Wenchuan (China) earthquake (Mw 7.9) and its aftershocks (Δ = 30–36°) to estimate the response spectra in 1–10 Hz at 24 Hi-net sites. Our analysis is based on the multi-taper spectral estimation method. Observed variations in the P-wave spectra are explained in terms of site amplifications, obtained by using both standard spectral ratio and array average methods. The results show that most of the an

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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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Rafea, Huda Farhan, Emad A. Al-Heety, and Wathiq Abdulnaby. "Crustal Velocity Structure of Western Iraq from Inversion of Receiver Functions at Anbar Seismic Station." Iraqi Geological Journal 55, no. 2B (2022): 25–34. http://dx.doi.org/10.46717/igj.55.2b.3ms-2022-08-19.

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The inversion of the teleseismic P-wave receiver functions was employed to determine the structure of the crust under Anbar broadband seismic station. Some of the computer programs in seismology were used to analyze the receiver functions of nine teleseismic earthquakes. Results of inversion show that the crustal structure (Moho depth) beneath the ANB1 station is 44 km. The sedimentary cover thickness (basement depth) at the ANB1 station is 12km. In general, the obtained sedimentary cover and crustal thicknesses are consistent with the results of some previous studies in the Mesopotamian plain

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Monteiller, Vadim, Stephen Beller, Bastien Plazolles, and Sébastien Chevrot. "On the validity of the planar wave approximation to compute synthetic seismograms of teleseismic body waves in a 3-D regional model." Geophysical Journal International 224, no. 3 (2020): 2060–76. http://dx.doi.org/10.1093/gji/ggaa570.

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SUMMARY Injection methods are a very efficient means to compute synthetic seismograms of short-period teleseismic body waves in 3-D regional models. The principle is to inject an incident teleseismic wavefield inside a regional 3-D Cartesian spectral-element grid. We have developed an opern-source package that allows us to inject either an incident plane wave, computed with a frequency–wavenumber method, or the complete wavefield, computed in a spherically symmetric reference earth model with AxiSEM. The computations inside the regional spectral-element grid are performed with SPECFEM3D_Cartes

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Kanao, Masaki, Akira Yamada, and Mikiya Yamashita. "Characteristic Seismic Waves Associated with Cryosphere Dynamics in Eastern Dronning Maud Land, East Antarctica." International Journal of Geophysics 2012 (2012): 1–19. http://dx.doi.org/10.1155/2012/389297.

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Several kinds of natural source signals are recorded by seismic exploration stations on the continental ice sheet in Eastern Dronning Maud Land, East Antarctica, during 2002 austral summer. They include not only tectonic earthquakes, but also ice-related phenomena possibly involving recent global climate change. The recorded signals are classified into (1) teleseismic events, (2) local ice quakes, and (3) unidentified events (X-phases). The teleseismic waves show the high signal-to-noise ratio in spite of the small magnitude of the event; this indicates that it is highly feasible to study not

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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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Jimenez, Cesar, Jorge Morales, Miguel Estrada, Bruno Adriano, Erick Mas, and Shunichi Koshimura. "Estimation of the Seismic Source of the 1974 Lima Peru Earthquake and Tsunami (Mw 8.1)." Journal of Disaster Research 18, no. 8 (2023): 825–34. http://dx.doi.org/10.20965/jdr.2023.p0825.

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In this investigation, we have conducted a long period teleseismic and tsunami waveform inversion to obtain the slip distribution of the 1974 Lima-Perú earthquake occurred in the central region of Peru. According to teleseismic inversion, the rupture process was complex with a duration of 90 s approximately and the main asperity was located in the northern side of the rupture geometry, offshore Lima and Callao. According to tsunami waveform inversion the main asperity was located in the southern side of the fault plane, offshore Cañete. However, a joint inversion of teleseismic and tsunami wav

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Withers, Mitchell, Richard Aster, and Christopher Young. "An automated local and regional seismic event detection and location system using waveform correlation." Bulletin of the Seismological Society of America 89, no. 3 (1999): 657–69. http://dx.doi.org/10.1785/bssa0890030657.

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Abstract We report on the development of an automated Local Waveform Correlation Event Detection System (LWCEDS) and its application to the New Mexico Tech Seismic Network. LWCEDS is an adaptation of a global system, WCEDS, a matched filtering algorithm for global Comprehensive Test Ban Treaty (CTBT) monitoring applications developed at Sandia National Laboratories and New Mexico Tech. Although the current CTBT monitoring system is based on teleseismic phase detection, effort is being placed on research to highlight specific areas of the globe for which local and regional seismic networks coul

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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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Bharadwaj, Pawan, Chunfang Meng, Aimé Fournier, Laurent Demanet, and Mike Fehler. "Redshift of earthquakes via focused blind deconvolution of teleseisms." Geophysical Journal International 223, no. 3 (2020): 1864–78. http://dx.doi.org/10.1093/gji/ggaa419.

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SUMMARY We present a robust factorization of the teleseismic waveforms resulting from an earthquake source into signals that originate from the source and signals that characterize the path effects. The extracted source signals represent the earthquake spectrum, and its variation with azimuth. Unlike most prior work on source extraction, our method is data-driven, and it does not depend on any path-related assumptions, for example, the empirical Green’s function. Instead, our formulation involves focused blind deconvolution (FBD), which associates the source characteristics with the similarity

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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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Huang, Ching-Jer, Hsin-Yu Chen, Chung-Ray Chu, et al. "Low-Frequency Ground Vibrations Generated by Debris Flows Detected by a Lab-Fabricated Seismometer." Sensors 22, no. 23 (2022): 9310. http://dx.doi.org/10.3390/s22239310.

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A lab-fabricated ocean bottom seismometer was modified and deployed terrestrially to detect low-frequency (<10 Hz) ground vibrations produced by debris flows. A frequency–response test of the new seismometer revealed that it can detect seismic signals at frequencies of 0.3–120 Hz. Its seismic ground motion detection ability was investigated by comparing its measurements of seismic signals produced by rockfalls with those of a geophone. Two new seismometers were deployed at the Aiyuzi Stream, Nantou County, Taiwan, in September 2012. Seismic signals produced by two local earthquakes, two tel

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Mercier, Jean-Philippe, Michael G. Bostock, and Adam M. Baig. "Improved Green’s functions for passive-source structural studies." GEOPHYSICS 71, no. 4 (2006): SI95—SI102. http://dx.doi.org/10.1190/1.2213951.

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Over the past two decades, teleseismic receiver functions have proved to be a useful tool to investigate crustal structure. Because they represent a first-order approximation to the [Formula: see text]-wave component of the teleseismic-[Formula: see text] Green’s function, receiver functions provide valuable information on physical properties related to shear modulus. However, the implicit use of the [Formula: see text]-component seismogram as a proxy for the source precludes the recovery of information on discontinuous structure involving contrasts in compressional modulus. By deconvolving im

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Bostock, M. G., and S. Rondenay. "Migration of scattered teleseismic body waves." Geophysical Journal International 137, no. 3 (1999): 732–46. http://dx.doi.org/10.1046/j.1365-246x.1999.00813.x.

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Earle, P. S. "Polarization of the Earth's teleseismic wavefield." Geophysical Journal International 139, no. 1 (1999): 1–8. http://dx.doi.org/10.1046/j.1365-246x.1999.00908.x.

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Korenaga, Jun. "Teleseismic migration with dual bootstrap stack." Geophysical Journal International 196, no. 3 (2013): 1706–23. http://dx.doi.org/10.1093/gji/ggt475.

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Vinnik, L. P., and R. Kind. "Ellipticity of Teleseismic S-Particle Motion." Geophysical Journal International 113, no. 1 (1993): 165–74. http://dx.doi.org/10.1111/j.1365-246x.1993.tb02537.x.

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Frederiksen, A. W., and J. Revenaugh. "Lithospheric imaging via teleseismic scattering tomography." Geophysical Journal International 159, no. 3 (2004): 978–90. http://dx.doi.org/10.1111/j.1365-246x.2004.02414.x.

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Bostock, M. G. "Kirchhoff-approximate inversion of teleseismic wavefields." Geophysical Journal International 149, no. 3 (2002): 787–95. http://dx.doi.org/10.1046/j.1365-246x.2002.01687.x.

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Tsuboi, Seiji, Paul M. Whitmore, and Thomas J. Sokolowski. "Application of Mwp to deep and teleseismic earthquakes." Bulletin of the Seismological Society of America 89, no. 5 (1999): 1345–51. http://dx.doi.org/10.1785/bssa0890051345.

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Abstract The broadband moment magnitude Mwp (Tsuboi, et al., 1995) allows for the effective determination of earthquake magnitude by using broadband P waveforms. It was developed to determine moment magnitude of shallow earthquakes around the Japanese Islands for early tsunami warnings. Tsuboi et al. (1995) demonstrated that Mwp shows good agreement with the Mw from Harvard centroid moment tensor (CMT) solutions. In the present study, we show that Mwp is also applicable to deep earthquakes and earthquakes recorded at teleseismic distances. The Mwp proves to be useful for quick, accurate size e

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