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Pinotepa Nacional earthquake 1996

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Journal Article

Focal mechanism determination and identification of the fault plane of earthquakes using only one or two near-source seismic recordings

Bertrand Delouis, Denis Legrand
Published: 01 December 1999
Bulletin of the Seismological Society of America (1999) 89 (6): 1558–1574.
DOI: https://doi.org/10.1785/BSSA0890061558
... established and for which strong-motion records are available at maximum distances of a few tens of kilometers. Test events are the 1994 Northridge ( M w = 6.7, California), the 1996 Copala ( M w = 7.3, Mexico), and the 1996 Pinotepa Nacional ( M w = 5.4, Mexico) earthquakes. In the case of inversions...
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Rupture Models of Recent M w > 7 Thrust Earthquakes in the Guerrero–Oaxaca Region of the Mexico Subduction Zone Using Teleseismic Body Waves

Carlos Mendoza, M. Rosario Martínez‐López
Published: 05 May 2021
Seismological Research Letters (2021) 92 (6): 3565–3576.
DOI: https://doi.org/10.1785/0220200423
...Carlos Mendoza; M. Rosario Martínez‐López Abstract We invert the teleseismic broadband (1–60 s period) ground‐displacement body waveforms recorded for the 1995 M w 7.3 Copala, the 1996 M w 7.1 Oaxaca, the 2012 M w 7.5 Ometepec, and the 2018 M w 7.2 Pinotepa Nacional thrust earthquakes...
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Distribution of frictional conditions in each of the four regions: F1, F2, ...

Published: 12 November 2019
Figure 8. Distribution of frictional conditions in each of the four regions: F1, F2, F3, and F4 (areas enclosed by thick dashed lines). Stars represent the mainshocks of the 2012 Ometepec‐Pinotepa Nacional, the 2014 Papanoa, and the 2018 Pinotepa Nacional earthquake sequences. Continuous lines
Journal Article

Spatial Distribution of Radiated Seismic Energy of Three Aftershocks Sequences at Guerrero, Mexico, Subduction Zone

Raymundo Plata‐Martínez, Xyoli Pérez‐Campos, Shri Krishna Singh
Published: 12 November 2019
Bulletin of the Seismological Society of America (2019) 109 (6): 2556–2566.
DOI: https://doi.org/10.1785/0120190104
...Figure 8. Distribution of frictional conditions in each of the four regions: F1, F2, F3, and F4 (areas enclosed by thick dashed lines). Stars represent the mainshocks of the 2012 Ometepec‐Pinotepa Nacional, the 2014 Papanoa, and the 2018 Pinotepa Nacional earthquake sequences. Continuous lines...
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Standard deviation of subfault slip (in centimeters) for the (a) 1995 Copal...

Published: 05 May 2021
Figure 7. Standard deviation of subfault slip (in centimeters) for the (a) 1995 Copala, (b) 2012 Ometepec, (c) 1996 Oaxaca, and (d) 2018 Pinotepa Nacional earthquakes, calculated from the multiple slip models derived for each event. Stars indicate the hypocenter locations on the fault. The color
Journal Article

The Repeating Major Earthquakes in the Mexican Subduction Zone Along Oaxaca: Implications for Future Events

Ricardo Garza‐Giron, Thorne Lay, Lingling Ye
Published: 28 October 2024
Seismological Research Letters (2024)
DOI: https://doi.org/10.1785/0220240267
... for the 1968 and 2018 Pinotepa Nacional (western Oaxaca), and 1965 and 2020 La Crucecita (eastern Oaxaca) earthquakes, as viewed in the long‐period World‐Wide Standardized Seismograph Network instrument passband (>5 s period). Drawing on detailed slip inversions for the most recent events and observations...
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Euclidean norms (L2) obtained for multiple inversions of the teleseismic bo...

Published: 05 May 2021
Figure 6. Euclidean norms (L2) obtained for multiple inversions of the teleseismic body waves recorded for the (a) 1995 Copala, (b) 1996 Oaxaca, (c) 2012 Ometepec, and (d) 2018 Pinotepa Nacional earthquakes using varying values of strike, dip, rake, and hypocenter depth. The yellow star shows
Journal Article

Narrow Rupture of the 2020 M w 7.4 La Crucecita, Mexico, Earthquake

Rumeng Guo, Hongfeng Yang, Yifan Zhu, Yong Zheng, Jianqiao Xu, Lupeng Zhang, Chao An
Published: 13 January 2021
Seismological Research Letters (2021) 92 (3): 1891–1899.
DOI: https://doi.org/10.1785/0220200328
...://www.gebco.net/ , last accessed August 2020). The aftershock sequences are from the Servicio Sismológico Nacional (SSN) catalog ( http://www.ssn.unam.mx/ , last accessed November 2020). The moment rate functions for the 2012 M w  7.5 Ometepec earthquake and the 2018 M w  7.2 Pinotepa earthquake...
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A Source Study of the M w 7.0 Acapulco, Mexico, Earthquake of 8 September 2021

Arturo Iglesias, Shri K. Singh, Oscar Castro‐Artola, Xyoli Pérez‐Campos, Raul D. Corona‐Fernandez, Miguel A. Santoyo, Víctor H. Espíndola, Danny Arroyo, Sara I. Franco
Published: 07 September 2022
Seismological Research Letters (2022) 93 (6): 3205–3218.
DOI: https://doi.org/10.1785/0220220124
..., for example, Colima–Jalisco earthquake of 9 October 1995 ( E R / M 0 = 5.6 × 10 − 6 ) and Pinotepa Nacional earthquake of 25 February 1996 ( E R / M 0 = 3.42 × 10 − 6 ) (Table  2 ). E R / M 0 of 2.1 × 10 − 5 for the 2021 earthquake...
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Source process of the Chiapas, Mexico, intermediate-depth earthquake ( M w = 7.2) of 21 October 1995

Cecilio J. Rebollar, Luis Quintanar, Jaime Yamamoto, Antonio Uribe
Published: 01 April 1999
Bulletin of the Seismological Society of America (1999) 89 (2): 348–358.
DOI: https://doi.org/10.1785/BSSA0890020348
... of the first 40 sec of the displacement records recorded at the broadband seismic stations of Huatulco ( HUIG ) and Pinotepa Nacional ( PNIG ). For the station located in Tuxtla Gutierrez ( TUXD ), we used two sources, since only the first 5 sec were modeled. The amplitude spectrum at teleseismic distances...
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An Estimate of Shear-Wave Q of the Mantle Wedge in Mexico

S. K. Singh, J. F. Pacheco, D. García, A. Iglesias
Published: 01 February 2006
Bulletin of the Seismological Society of America (2006) 96 (1): 176–187.
DOI: https://doi.org/10.1785/0120050001
... , and J. N. Brune ( 1982 ). Spectral attenuation of SH -wave along the Imperial fault , Bull. Seism. Soc. Am. 72 , 2003 – 2016 . Singh , S. K. , J. F. Pacheco , F. Courboulex , and D. A. Novelo ( 1997 ). Source parameters of the Pinotepa Nacional, Mexico, earthquake...
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Fast Identification of Near‐Trench Earthquakes along the Mexican Subduction Zone Based on Characteristics of Ground Motion in Mexico City

S. K. Singh, D. Arroyo, X. Pérez‐Campos, Q. Rodríguez, A. Iglesias, M. Ortiz
Published: 06 September 2016
Bulletin of the Seismological Society of America (2016) 106 (5): 2071–2080.
DOI: https://doi.org/10.1785/0120160003
... and Tehuantepec (Fig.  1 ) since 1962, are reasonably well known. Of these 17 earthquakes, the aftershock and/or rupture areas of only two events, 9 October 1995 ( M w  8.0) Colima‐Jalisco and 25 February 1996 ( M w  7.1) Pinotepa Nacional, reached near the trench. Moderate near‐trench earthquakes are mostly...
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Stochastic Modeling of the 30 September 1999 M w 7.5 Earthquake, Oaxaca, Mexico

Raúl R. Castro, Euclides Ruíz-Cruz
Published: 01 December 2005
Bulletin of the Seismological Society of America (2005) 95 (6): 2259–2271.
DOI: https://doi.org/10.1785/0120040145
... stations selected for the analyses and the location of the earthquake epicenter. All of the available records were taken from the Mexican Strong Motion Database (2000) ( msmd ), except those from LANE and RIOG, which were provided by the Instituto de Ingenieria, Universidad Nacional Autónoma de México...
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The 14 September 1995 ( M = 7.3) Copala, Mexico, earthquake: A source study using teleseismic, regional, and local data

F. Courboulex, M. A. Santoyo, J. F. Pacheco, S. K. Singh
Published: 01 August 1997
Bulletin of the Seismological Society of America (1997) 87 (4): 999–1010.
DOI: https://doi.org/10.1785/BSSA0870040999
...) and the Pinotepa Nacional region, a variable rupture mode has been suggested for this earthquake of 25 February 1996 (M 7.1). The location of segment (Nishenko and Singh, 1987a). It should be noted, these events are shown in Figure 1. however, that the locations of the mainshocks and their after- shocks are poorly...
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Near-Trench Mexican Earthquakes Have Anomalously Low Peak Accelerations

A. Iglesias, S. K. Singh, J. F. Pacheco, L. Alcántara, M. Ortiz, M. Ordaz
Published: 01 April 2003
Bulletin of the Seismological Society of America (2003) 93 (2): 953–959.
DOI: https://doi.org/10.1785/0120020168
... of these earthquakes occurred off the coast of Pinotepa Nacional (events 11 and 17, Table 2 , Fig. 2 ), and the other two events are those of 18 April. The observed A max in all four cases is much smaller than the predicted value at a hard site for near-coast earthquakes. These predicted values are given...
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Crustal Structure beneath Mexico from Receiver Functions

Victor Hugo Espíndola, Luis Quintanar, Juan Manuel Espíndola
Published: 25 September 2017
Bulletin of the Seismological Society of America (2017) 107 (5): 2427–2442.
DOI: https://doi.org/10.1785/0120160152
... of the subducted crust of 22–25 km from Chamela (CJIG) to Pinotepa Nacional (PNIG), reaching 35 km for HUIG. The difference in depths of ∼ 10    km suggests that the angle of subduction increases toward the south, as discussed in the previous paragraph. HUIG lies to the west of the Tehuantepec ridge...
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The Mexican Earthquake Source Parameter Database: A New Resource for Earthquake Physics and Seismic Hazard Analyses in Mexico

Quetzalcoatl Rodríguez‐Pérez, Víctor H. Márquez‐Ramírez, F. Ramón Zúñiga, Raymundo Plata‐Martínez, Xyoli Pérez‐Campos
Published: 25 July 2018
Seismological Research Letters (2018) 89 (5): 1846–1862.
DOI: https://doi.org/10.1785/0220170250
... Amoles ( Suter et al. , 1996 ), 1920 M s  6.2 Jalapa ( Abe, 1981 ), 1950 M b  5.0 Ixmiquilpan ( Singh et al. , 1984 ), 1976 M b  5.3 Cardonal (Mexican Seismological Service), and 1979 M b  5.5 Maravatío ( Astiz, 1980 ) earthquakes. The largest event known, the 1567/1568...
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Source Time Function and Duration of Mexican Earthquakes

S. K. Singh, J. Pacheco, M. Ordaz, V. Kostoglodov
Published: 01 April 2000
Bulletin of the Seismological Society of America (2000) 90 (2): 468–482.
DOI: https://doi.org/10.1785/0119990081
... parameters of the Pinotepa Nacional, Mexico, earthquake of 27 March, 1996 (Mw = 5.4) estimated from near-field recording of a single station , J. Seism . 1 , 39 – 45 . Singh , S. K. , M. Ordaz , J. Pacheco , and F. Courboulex ( 2000 ). A simple inversion scheme for displacement...
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2020 Annual Meeting

Published: 01 April 2020
Seismological Research Letters (2020) 91 (2B): 1095–1338.
DOI: https://doi.org/10.1785/0220200043
... and FinDer algorithms by running them retrospectively on the seismic strong motion data of the 219 earthquakes in Japan since 1996 that exceeded Modified Mercalli Intensity (MMI) of 4.5 on at least 10 sites (Mw 4.5-9.1). Our analysis suggests that, irrespective of the algorithm, EEW end-users should expect...
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SSA 2021 Annual Meeting

Published: 01 April 2021
Seismological Research Letters (2021) 92 (2B): 1213–1479.
DOI: https://doi.org/10.1785/0220210025
..., and 2020 have been at similar depths between 20 and 25 km near the up-dip edge of the slow-slip zone. We study the ruptures of the 20 March 2012 Mw 7.4 Ometepec earthquake near the Guerrero-Oaxaca border, the16 February 2018 Mw 7.2 Pinotepa earthquake near Pinotepa Nacional in Oaxaca, and the 23 June 2020...
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