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International Seismological Centre

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Journal Article
Published: 01 July 2001
Seismological Research Letters (2001) 72 (4): 440–453.
... identification. © 2001 by the Seismological Society of America 2001 The International Seismological Centre (ISC) prepares a global seismicity catalog that is intended to represent a comprehensive summary of hypocenters and phase readings for all sufficiently large earthquakes. There is no firm...
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Journal Article
Published: 01 June 1964
Bulletin of the Seismological Society of America (1964) 54 (3): 1021–1022.
... Copyright © 1964, by the Seismological Society of America Bulletin of the Seismological Society of America. VoL 54, No. 3, pp. 1021-1022. June,1964 RESOLUTIONS RELATING TO THE INTERNATIONAL SEISMOLOGICAL CENTRE RESOLUTION No. 13 THE INTERNATIONAL UNION OF GEODESY AND GEOPHYSICS Noting...
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iLoc relocations with added International Seismological Centre (ISC) data and regional seismic travel‐time (RSTT) predictions. The color version of this figure is available only in the electronic edition.
Published: 31 October 2024
Figure 5. iLoc relocations with added International Seismological Centre (ISC) data and regional seismic travel‐time (RSTT) predictions. The color version of this figure is available only in the electronic edition.
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(a) Intensity dataset compiled from the International Seismological Centre (ISC) (2021) for the 1999 Athens earthquake. Panel (b) shows the location of candidate ruptures and the epicenter for the Athens earthquake. Rupture A is considered the source of the earthquake, according to independent data. The color version of this figure is available only in the electronic edition.
Published: 15 December 2022
Figure 2. (a) Intensity dataset compiled from the International Seismological Centre (ISC) (2021) for the 1999 Athens earthquake. Panel (b) shows the location of candidate ruptures and the epicenter for the Athens earthquake. Rupture A is considered the source of the earthquake, according
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Summary of the earthquakes in the International Seismological Centre‐Global Earthquake Model (ISC‐GEM) catalog with Mw from the literature search. The spatial distribution is shown on top (dark gray circles are earthquakes without source mechanism), and the bottom shows their magnitude timeline. Black squares are for earthquakes with source mechanism.
Published: 23 June 2022
Figure 1. Summary of the earthquakes in the International Seismological Centre‐Global Earthquake Model (ISC‐GEM) catalog with M w from the literature search. The spatial distribution is shown on top (dark gray circles are earthquakes without source mechanism), and the bottom shows
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Final International Seismological Centre (ISC)‐based earthquake catalog, built from the ISC‐Global Earthquake Model (GEM), ISC, and Global Centroid Moment Tensor (GCMT) catalogs, homogenized in magnitude Mw.The color version of this figure is available only in the electronic edition.
Published: 03 April 2018
Figure 3. Final International Seismological Centre (ISC)‐based earthquake catalog, built from the ISC‐Global Earthquake Model (GEM), ISC, and Global Centroid Moment Tensor (GCMT) catalogs, homogenized in magnitude M w .The color version of this figure is available only in the electronic
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(a) First‐priority depths adopted by the International Seismological Centre (ISC) versus the ISC pP‐depth information. The histogram of pP depths is also included as an inset figure. Notice the agreement across the bisector (dashed line) for the whole depth range, because this also denoted by the least‐squares line (solid line). The vertical bars corresponding to standard deviation error for pP depths estimations are also plotted, showing high spreading for intermediate‐depth earthquakes (h&lt;300–350  km). (b) Δh(hpP−hISC) residual variation against ISC depth is shown with the corresponding distribution histogram, including Gaussian fit for these observations. (c and d) Same plots as (a) and (b) for the Engdahl–van der Hilst–Buland (EHB) depth data.
Published: 22 March 2016
Figure 2. (a) First‐priority depths adopted by the International Seismological Centre (ISC) versus the ISC pP ‐depth information. The histogram of pP depths is also included as an inset figure. Notice the agreement across the bisector (dashed line) for the whole depth range, because this also
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Seismicity plot using the bulletin from International Seismological Centre (ISC) and other international organizations (1897-2010). (source: North-East Institution of Science and Technology, Jorhat) and the Assam Gap (after Khattri, 1983).
Published: 01 September 2015
Fig.7. Seismicity plot using the bulletin from International Seismological Centre (ISC) and other international organizations (1897-2010). (source: North-East Institution of Science and Technology, Jorhat) and the Assam Gap (after Khattri, 1983 ).
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Comparison among International Seismological Center (UK) Engdahl–van der Hilst–Buland (ISC-EHB) catalog locations (A–C), U.S. Geological Survey (USGS) catalog locations (D–F), and corresponding relocated Mw ≥5 earthquakes from this study (G–I) in map view on the Gofar (East Pacific Rise), SEIR 100E (southeast Indian Ridge), and Kane (Mid-Atlantic Ridge) oceanic transform faults. The slip rate of each fault is denoted after its name at the top of the figure. In A–C, the ISC-EHB catalog does not contain events after 2017 and moment magnitude is not available for each event, therefore the number of earthquakes may not match with those of the other panels and they are plotted in uniform black circles. In D–I, an event is marked by a focal mechanism if available from the USGS catalog; otherwise by solid circle. Sizes of earthquake symbols scale with magnitude. Color scale denotes bathymetry.
Published: 02 November 2021
Figure 1. Comparison among International Seismological Center (UK) Engdahl–van der Hilst–Buland (ISC-EHB) catalog locations (A–C), U.S. Geological Survey (USGS) catalog locations (D–F), and corresponding relocated M w ≥5 earthquakes from this study (G–I) in map view on the Gofar (East Pacific
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Seismic events (red) in the International Seismological Center (ISC) event bulletin in 2009 and 2010, which are constrained only using phase readings from IMS seismic array stations (white circles).
Published: 10 June 2015
Figure 2. Seismic events (red) in the International Seismological Center (ISC) event bulletin in 2009 and 2010, which are constrained only using phase readings from IMS seismic array stations (white circles).
Series: Geological Society, London, Special Publications
Published: 01 January 2014
DOI: 10.1144/SP392.3
EISBN: 9781862396685
... Abstract We use Pn -tomography to map lithospheric mantle velocity and anisotropy at the Arabia–Eurasia plate boundary, namely Makran and Zagros. We use catalogue events recorded by Oman, UAE, Saudi Arabia and Iran networks, the International Seismological Centre and the National Earthquake...
Journal Article
Published: 16 September 2020
Seismological Research Letters (2020) 91 (6): 3195–3207.
... agencies (International Seismological Centre [ISC], National Earthquake Information Centre [NEIC], Global Centroid Moment Tensor Solution [CMT], International Data Centre [IDC], China Earthquake Administration [BJI], and National Centre for Seismology [NDI]). The intra‐ (within the same magnitude scale...
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Journal Article
Published: 01 April 1999
Bulletin of the Seismological Society of America (1999) 89 (2): 335–341.
...Omar J. Pérez Abstract Using the standard earthquake catalogs provided by the International Seismological Centre ( ISC ), its predecessor the International Seismological Summary ( ISS ), and the National Earthquake Information Center ( NEIC ), I analyze the worldwide consistency of teleseismic...
Journal Article
Published: 28 June 2025
Russ. Geol. Geophys. (2025)
... of velocity heterogeneities of the medium, is considered. The analysis of background and aftershock seismicity with m b (ISC) ≥ 4.5 (according to International Seismological Center isc.ac.uk) was analyzed at the sites of 3° × 3° focal areas. The total scalar seismic moment of the background seismicity...
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Journal Article
Published: 02 July 2024
Seismological Research Letters (2024) 95 (6): 3746–3760.
...‐scale benchmark data set of Pn and Sn seismic phases, namely Seis–PnSn. The data set is derived from earthquake events with epicenter distances ranging from 1.8° to 18°. The high‐quality travel‐time data used in this study are all from the International Seismological Centre and span the period 2000...
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Journal Article
Published: 01 June 2025
Russ. Geol. Geophys. (2025) 66 (6): 692–702.
... the International Seismological Center (ISC) data for a period of 1976–2022 and other recent geological–geophysical characteristics, such as gravity field heterogeneities, crustal thickness, volcanic manifestations, etc. It is revealed that the southern boundary of the Okhotsk Plate actually passes along...
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Journal Article
Published: 01 December 2007
Bulletin of the Seismological Society of America (2007) 97 (6): 1820–1832.
... of earthquakes in the early bulletins of the International Seismological Centre ( ISC ). The most significant improvement of the new locations is in focal depth, and a significant number of blatant mislocations (such as earthquakes deeper than 100-km below midocean ridges) have also been corrected...
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Journal Article
Published: 01 April 1984
Bulletin of the Seismological Society of America (1984) 74 (2): 669–686.
... Seismological Center ( ISC ) tape and Regional Catalogues of Earthquakes. This file compiles the earthquake data given by Gutenberg and Richter (1954) for the first half of the century, and data from various international agencies after ≈ 1945. We find a highly incomplete seismicity catalog at this magnitude...
Journal Article
Published: 01 February 2009
Bulletin of the Seismological Society of America (2009) 99 (1): 422–427.
...Qie Zhang; Eric Sandvol; Mian Liu Abstract A total of 19,166 Pn phase readings from the International Seismological Centre ( ISC ) and the National Earthquake Information Center ( NEIC ) catalogs as well as hand-picked arrivals from the Incorporated Research Institutions for Seismology ( IRIS...
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Journal Article
Published: 01 June 2011
Bulletin of the Seismological Society of America (2011) 101 (3): 1341–1353.
... arrival times for the epicenters location using the grid search scheme of Rodi (2006) . On a stand alone basis the locations were almost identical to the International Seismological Centre ( ISC ) and the National Earthquake Information Center ( NEIC ) epicenter solutions. A practical problem...
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