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Lower Tagus Valley Fault

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Journal Article
Published: 01 January 2012
Seismological Research Letters (2012) 83 (1): 67–76.
... trending tectonic structures usually referred to as the Lower Tagus Valley fault zone. Reviewed published maps ( e.g. , Serviços Geológicos e Portugal 1952, 1977, 1999; Cabral et al. 2004 ) do not show any active tectonic structure along the Lower Tagus Valley except for northwest-southeast trending...
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Journal Article
Published: 15 December 2022
Bulletin of the Seismological Society of America (2023) 113 (2): 710–731.
... of the Athens earthquake amongst different ruptures located few kilometers apart. The analysis performed for the 1909 Benavente earthquake suggests that the eastern strand of the lower Tagus Valley fault zone is the most likely seismic source for earthquake, amongst those proposed in the literature. KEY...
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From left to right, intensities reported for the 1531, 1755, and 1909 earth...
Published: 01 December 2005
Figure 3. From left to right, intensities reported for the 1531, 1755, and 1909 earthquakes affecting the Lisbon area. All maps have the same scale and projection. The Lower Tagus Valley Fault ( ltvf ) is shown in dark blue, as inferred from one text of the paper. The isoseismals for the 1909
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▴ Isoseismals for the 1531 earthquake simplified from Justo and Salwa ( 199...
Published: 01 January 2012
Figure 6. ▴ Isoseismals for the 1531 earthquake simplified from Justo and Salwa ( 1998 ) shown are in (A). Isoseismals for the 1909 earthquake according to Chofat and Bensaude ( 1912 ) are shown in (B). The Lower Tagus Valley fault trace according to this study is also represented (black line).
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Epicentral locations (black circles) proposed by different authors for the ...
Published: 01 October 2003
); R, Reid ( 1914 ); Ma, Machado ( 1966 ); Mo, Moreira ( 1989 ); Z, Zittellini et al. (1999); LTVF, Lower Tagus Valley Fault; NF, Nazaré Fault; MF, Messejana Fault; GB, Gorringe Bank; TAP, Tagus Abyssal Plain; ES, Estremadura Spur; MTR, Madeira–Tore Rise (shown at its northeast termination); L, Lisbon
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Active tectonic <span class="search-highlight">faults</span> of southwest Iberia, according to  Cunha  et al.  (2...
Published: 07 January 2020
thrust; GF, Guadalquivir fault; HSF, Horseshoe fault; LTVF, Lower Tagus Valley fault; MF, Messejana fault; MPF, Marques de Pombal fault; PSF, Pereira de Sousa fault; SVF, St. Vincent fault; SWIM, southwest Iberian Margin lineaments of Zitellini et al. (2009) . The gray star shows the preferred 1755
Journal Article
Published: 01 October 2003
Bulletin of the Seismological Society of America (2003) 93 (5): 2056–2068.
... ); R, Reid ( 1914 ); Ma, Machado ( 1966 ); Mo, Moreira ( 1989 ); Z, Zittellini et al. (1999); LTVF, Lower Tagus Valley Fault; NF, Nazaré Fault; MF, Messejana Fault; GB, Gorringe Bank; TAP, Tagus Abyssal Plain; ES, Estremadura Spur; MTR, Madeira–Tore Rise (shown at its northeast termination); L, Lisbon...
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Journal Article
Published: 01 December 2005
Bulletin of the Seismological Society of America (2005) 95 (6): 2534–2538.
...Figure 3. From left to right, intensities reported for the 1531, 1755, and 1909 earthquakes affecting the Lisbon area. All maps have the same scale and projection. The Lower Tagus Valley Fault ( ltvf ) is shown in dark blue, as inferred from one text of the paper. The isoseismals for the 1909...
FIGURES | View All (4)
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▴ (A) Map showing the location of Portugal in the Iberian Peninsula. The st...
Published: 01 January 2012
Figure 1: ▴ (A) Map showing the location of Portugal in the Iberian Peninsula. The study area (small rectangle) is shown in (B) with names of towns along the Lower Tagus Valley; topography is based on the 90-m resolution SRTM-derived digital elevation model. Dark gray areas indicate water
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Seismicity of Portugal and its adjacent Atlantic region for the 1961–2015 p...
Published: 01 May 2016
) and bathymetry (ETOPO1) of the region as determined by Zitellini et al. (2009) for the offshore faults and from Cabral and Ribeiro (1988) for the onshore faults. PT, Tagus plain; PF, Ferradura plain; AB, Ampere bank; FF, Ferradura fault; MSP, Porto seamount; VN, Nazaré Valley; VIT, Lower Tagus Valley; VS
Journal Article
Published: 20 May 2020
Seismological Research Letters (2020) 91 (4): 2287–2297.
... seismic studies show that this complex fault zone is buried beneath Holocene sediments and is deforming the alluvial cover, in agreement with a previous work that proposes the fault as the source of the 1531 Lower Tagus Valley earthquake. In this work, we corroborate these results using S ‐wave, P ‐wave...
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Journal Article
Published: 01 December 2005
Bulletin of the Seismological Society of America (2005) 95 (6): 2539–2542.
... deformation near Lisbon, cartographic evidence of changes in the course of the Tagus river, and the distribution of destructive aftershocks. The proposed location of the triggered rupture is the well-established seismogenic Lower Tagus Valley ( ltv ) fault ( Cabral, 1995 ). There is reasonable consensus...
FIGURES
Journal Article
Published: 03 June 2014
Bulletin of the Seismological Society of America (2014) 104 (3): 1212–1229.
.... Nemser E. N. Falcão‐Flor A. Heleno S. Ferreira H. Fonseca J. F. D. B. ( 2012 ). Large Holocene earthquakes in the Lower Tagus Valley fault zone, central Portugal , Seismol. Res. Lett. 83 , 67 – 76 . Bommer J. J. Scherbaum F. Bungum H. Cotton F. Sabetta F...
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Journal Article
Published: 07 January 2020
Bulletin of the Seismological Society of America (2020) 110 (1): 1–17.
... thrust; GF, Guadalquivir fault; HSF, Horseshoe fault; LTVF, Lower Tagus Valley fault; MF, Messejana fault; MPF, Marques de Pombal fault; PSF, Pereira de Sousa fault; SVF, St. Vincent fault; SWIM, southwest Iberian Margin lineaments of Zitellini et al. (2009) . The gray star shows the preferred 1755...
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Journal Article
Published: 01 October 2007
Bulletin of the Seismological Society of America (2007) 97 (5): 1702–1717.
... a thorough error analysis that can be used to rank events in terms of magnitude quality and reliability. Based on trenching near Lisbon, Fonseca et al. (2000) reported Holocene deformation on the Lower Tagus Valley fault system, which has been associated with the historical seismicity...
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Journal Article
Published: 16 September 2014
Bulletin of the Seismological Society of America (2014) 104 (5): 2149–2161.
... of Lisbon in historical times ( A.D. 1344, 1531, and 1909) was due to the tectonic activity on the Lower Tagus Valley fault ( Choffat and Bensaude, 1912 ). Of these intraplate events, only the 1909 Benavente earthquake occurred in the instrumental period. Several authors determined the magnitude...
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Journal Article
Published: 11 September 2018
Bulletin of the Seismological Society of America (2018) 108 (5A): 2854–2876.
... . Besana‐Ostman G. M. Vilanova S. P. Nemser E. S. Falcão‐Flor A. Heleno S. Ferreira H. , and Fonseca J. D. 2012 . Large Holocene earthquakes in the Lower Tagus valley fault zone, central Portugal , Seismol. Res. Lett. 83 , 67 – 76 . Bird P. 2003 . An updated...
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Journal Article
Published: 17 February 2021
Seismological Research Letters (2021) 92 (3): 1541–1570.
... in the Vilariça fault (northwest Portugal), a major late Variscan fault that developed during the amalgamation of Pangea ( Cabral, 1989 ; Rockwell et al. , 2009 ). The Lower Tagus Valley has been repeatedly hit by destructive earthquakes in the historical and early instrumental period such as the 1531 M w...
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Journal Article
Published: 01 April 1998
Bulletin of the Seismological Society of America (1998) 88 (2): 319–328.
.... Seismotectonic setting. LTFZ = Lower Tagus Fault zone; IFZ = inverse fault zone; NFZ = normal fault zone; Sub. Val. = submarine valley. The large circles indicate events with I > 7 or M > 6. The arrows are the pressure directions. The white ground is Genozoic; the stripped ground is Mesozoic; the crosses...
Journal Article
Published: 01 May 2016
Seismological Research Letters (2016) 87 (3): 743–750.
...) and bathymetry (ETOPO1) of the region as determined by Zitellini et al. (2009) for the offshore faults and from Cabral and Ribeiro (1988) for the onshore faults. PT, Tagus plain; PF, Ferradura plain; AB, Ampere bank; FF, Ferradura fault; MSP, Porto seamount; VN, Nazaré Valley; VIT, Lower Tagus Valley; VS...
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