Strain rate of the South American lithospheric plate by SIRGAS-CON geodetic observations

Marotta, Giuliano Sant’Anna; França, George Sand; Monico, J. F. Galera; Fuck, Reinhardt A.; Filho, José Oswaldo de Araújo

doi:10.1016/j.jsames.2013.07.004

Cited by 16 publications

(12 citation statements)

References 12 publications

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“…4c) is concentrated in the E-W direction. According to Marotta et al (2013), these directions corroborate the finding that the regional stress field, on the passive margin of South American Platform, is related mainly with spreading in the Mid-Atlantic Ridge and the resistive forces exerted by Nazca plate subduction.…”

Section: Resultssupporting

confidence: 82%

“…4 shows the effective elastic thickness (Te), available from Bizzi et al (2003) and the strain/ stress regime in the study area, available from Assumpção et al (1985Assumpção et al ( , 1997, Lima et al (1997), Assumpção (1998), Chimpliganond et al (2010), Marotta et al (2013), andAgurto-Detzel et al (2015). Fig.…”

Section: Resultsmentioning

confidence: 99%

“…a) Effective elastic thickness (Te) for Brazil (with local Te values) and for study area, with distribution of the strain rate and SHmax (modified from Bizzi et al, 2003). b) Strain rate estimated by geodetic observations (Marotta et al, 2013). c) Stress estimated by focal mechanism (FM), breakout (BO), in situ measurements (IS) and geological fault analysis (GF), showed by Assumpção et al (1985Assumpção et al ( , 1997, Lima et al (1997), Assumpção (1998), Chimpliganond et al (2010), Marotta et al (2013), andAgurto-Detzel et al (2015).…”

Section: Discussionmentioning

confidence: 99%

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Causes of intraplate seismicity in central Brazil from travel time seismic tomography

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Section: Resultssupporting

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Causes of intraplate seismicity in central Brazil from travel time seismic tomography

et al. 2016

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“…Полученные нами значения сейсмотектониче-ских деформаций сопоставлялись с широтными и меридиональными компонентами деформаций, определенными по материалам космической гео-дезии и приведенными в работах [Marotta et al, 2013;Sánchez et al, 2011]. Для исследуемой области обнаруживается совпадение в деформировании поверхностных (определенных из данных GPS) и глубинных объемов земной коры, полученных из расчета СТД по механизмам очагов землетрясений.…”

Section: Discussionunclassified

Seismotectonic deformation in the contact area of the Nazca and South American lithospheric plates in relation to the February 27, 2010 Mw 8.8 Maule earthquake

Дядьков¹,

Кучай²,

Романенко³

2017

Geodyn. Tectonophys.

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Based on the data on earthquake focal mechanisms, we estimated seismotectonic deformation related to the 2010 Мw 8.8 Maule earthquake and analyzed the deformation at different depths. In the main seismic dislocation of the Maule earthquake and the northern area, the deformation field to a depth of 70 km is typical of subduction zones as evidenced by shortening in the direction of the oceanic plate subduction. Below a depth of 70 km, the deformation pattern changes sharply to horizontal stretching. After the main seismic event, as well as before it, nearlatitudinal shortening was dominant in the focal zone, while the region of the main seismic dislocations was surrounded by separate areas of near-latitudinal stretching, which is an opposite type of deformation. We conducted a detailed analysis of the seismotectonic deformations in the oceanic uplift area to the west of the deep-water trough and identified local zones of near-latitudinal stretching near the southern and northern boundaries of the future Maule earthquake zone. Detecting such zones can provide important data for early forecasting of regions wherein strong subduction-related earthquakes are being prepared.

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“…This technique has been also applied to the entire South American plate (Marotta et al, 2013b) and partially in intracratonic and mid-plate areas (Alves et al, 2003;Marotta et al, 2013a;2015).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Quaternary deformation and stress field in the Río de la Plata Craton (Southeastern South America)

Brunetto

Sobrero

Giménez

2019

Journal of South American Earth Sciences

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Strain rate of the South American lithospheric plate by SIRGAS-CON geodetic observations

Cited by 16 publications

References 12 publications

Causes of intraplate seismicity in central Brazil from travel time seismic tomography

Causes of intraplate seismicity in central Brazil from travel time seismic tomography

Seismotectonic deformation in the contact area of the Nazca and South American lithospheric plates in relation to the February 27, 2010 Mw 8.8 Maule earthquake

Quaternary deformation and stress field in the Río de la Plata Craton (Southeastern South America)

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