Results 21 to 30 of about 44,640 (204)

Density structure and geometry of the Costa Rican subduction zone from 3-D gravity modeling and local earthquake data [PDF]

open access: yesSolid Earth, 2015
The eastern part of the oceanic Cocos Plate presents a heterogeneous crustal structure due to diverse origins and ages as well as plate-hot spot interactions which originated the Cocos Ridge, a structure that converges with the Caribbean Plate in ...
O. H. Lücke, I. G. Arroyo
doaj   +1 more source

Why is seismic activity low in Antarctica?

open access: yesAntarctic Record, 1984
Oceanic intraplate earthquakes which occurred in the oceanic lithosphere show the following features : 1. The level of oceanic intraplate seismicity appears to increase from high latitudes to low latitudes. 2.
Masashi Tani, Ichiro Kawasaki
doaj   +1 more source

Structural analysis of Azerbaijan territory horizontal velocity movement based on GPS-measurements

open access: yesГеофизический журнал, 2020
The contemporary kinematics of Azerbaijan is generated by the northward movement of Arabian plate relative to Eurasian one. This continuous «intervention» of Arabian plate into Eurasian one is the reason of the deformation of the Earth’s crust of the ...
E.V. Akhmedova
doaj   +1 more source

Scale-dependent influence of pre-existing basement shear zones on rift faulting : a case study from NE Brazil [PDF]

open access: yes, 2013
Rifting of continental crust initiates faults that are commonly influenced by pre-existing structures. We document newly identified faults cutting Precambrian units in the interior of the NE Brazilian margin to assess the effects of structural ...
Lunn, Rebecca   +6 more
core   +4 more sources

Seismicity from february 2006 to september 2007 at the Rwenzori Mountains, East African Rift: earthquake distribution, magnitudes and source mechanisms [PDF]

open access: yes, 2012
We have analysed the microseismic activity within the Rwenzori Mountains area in the western branch of the East African Rift. Seismogram recordings from a temporary array of up to 27 stations reveal approximately 800 events per month with local ...
Lindenfeld, Michael   +7 more
core   +2 more sources

Basement Structure and Styles of Active Tectonic Deformation in Central Interior Alaska

open access: yesGeosciences, 2021
Central Interior Alaska is one of the most seismically active regions in North America, exhibiting a high concentration of intraplate earthquakes approximately 700 km away from the southern Alaska subduction zone.
Nilesh C. Dixit, Catherine Hanks
doaj   +1 more source

Crustal Electrical Structure of the Ganzi Fault on the Eastern Tibetan Plateau: Implications for the Role of Fluids in Earthquakes

open access: yesRemote Sensing, 2022
The initiation and evolution of seismic activity in intraplate regions are controlled by heterogeneous stress and highly fractured rocks within the rock mass triggered by fluid migration.
Yuanzhi Cheng   +4 more
doaj   +1 more source

Seismotectonics in Northeastern France and neighboring regions

open access: yesComptes Rendus. Géoscience, 2021
The region of northeastern France is affected by low-magnitude background seismicity, with the rare occurrence of moderate earthquakes, which gives this region a non-negligible seismic risk. We provide an overview of the seismicity and seismotectonics of
Doubre, Cécile   +6 more
doaj   +1 more source

Seismicity characterization of oceanic earthquakes in the Mexican territory [PDF]

open access: yesSolid Earth, 2020
We analyzed the seismicity of oceanic earthquakes in the Pacific oceanic regime of Mexico. We used data from the earthquake catalogues of the Mexican National Service (SSN) and the International Seismological Centre (ISC) from 1967 to 2017.
Q. Rodríguez-Pérez   +3 more
doaj   +1 more source

The depth geodynamic state and its correlation with the surface geological and geophysical parameters along the sublatitudinal profile of Eurasia

open access: yesГеодинамика и тектонофизика, 2019
A cross‐sections of longitudinal (P) and transverse (S) wave anomalies (attribute δ(VP/VS)) is constructed along the sublatitudinal profile from the Atlantic Ocean to the Pacific Ocean across the regions of the latest Eurasian volcanism. It is correlated
S. Yu. Sokolov
doaj   +1 more source

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