scholarly journals Tarapacá intermediate-depth earthquake (Mw 7.7, 2005, northern Chile): A slab-pull event with horizontal fault plane constrained from seismologic and geodetic observations

2006 ◽  
Vol 33 (22) ◽  
Author(s):  
S. Peyrat ◽  
J. Campos ◽  
J. B. de Chabalier ◽  
A. Perez ◽  
S. Bonvalot ◽  
...  
Keyword(s):  
Fault Plane ◽  
Northern Chile ◽  
Intermediate Depth ◽  
Intermediate Depth Earthquake

Tectonic regimes and stress patterns in the Vrancea Seismic Zone: Insights into intermediate-depth earthquake nests in locked collisional settings

2021 ◽  
Vol 799 ◽  
pp. 228688
Author(s):  
Laura Petrescu ◽  
Felix Borleanu ◽  
Mircea Radulian ◽  
Alik Ismail-Zadeh ◽  
Liviu Maţenco
Keyword(s):  
Seismic Zone ◽  
Intermediate Depth ◽  
Stress Patterns ◽  
Intermediate Depth Earthquake

Earthquake nests as natural laboratories for the study of intermediate-depth earthquake mechanics

2012 ◽  
Vol 570-571 ◽  
pp. 42-56 ◽  
Author(s):  
Germán A. Prieto ◽  
Gregory C. Beroza ◽  
Sarah A. Barrett ◽  
Gabriel A. López ◽  
Manuel Florez
Keyword(s):  
Intermediate Depth ◽  
Earthquake Mechanics ◽  
Intermediate Depth Earthquake

Aftershock Activity at Intermediate-Depth Earthquakes in Northern Chile Controlled by Plate Hydration

2020 ◽  
Author(s):  
Leoncio Cabrera ◽  
Sergio Ruiz ◽  
Piero Poli ◽  
Eduardo Contreras-Reyes ◽  
Renzo Mancini ◽  
...  
Keyword(s):  
Template Matching ◽  
Broad Band ◽  
Strong Motion ◽  
Seismic Source ◽  
Northern Chile ◽  
Aftershock Activity ◽  
Study Region ◽  
Abrupt Decrease ◽  
Intermediate Depth ◽  
The Impact

<p>We investigate the differences of the seismic source and aftershock activity using kinematic inversions and template matching respectively, for the six largest intraslab intermediate-depth earthquakes occurred in northern Chile (Mw ~6.3) since 2010 at depths between 90 and 130 km and recorded by dense strong-motion and broad-band seismic networks. In addition, we developed a thermal model using the finite element method in the study region with the aim of analyze the impact of temperature on seismic behavior as the oceanic plate subducts. Our results show that geometries of rupture zones are similar, with semi-axis for an elliptical patch approach about 5 km, and stress drop values between 7 and 30 MPa. On the other hand, the number of aftershocks exhibits clear differences, and their amount decreases with increasing the depth within the slab bounded by the 450 ºC isotherm, which represents a limit between a high-hydrated and a dry or low-hydrated region. Furthermore, mainshocks occur at distances from the top of the slab from 7 to 40 km, and all of them exhibit normal focal mechanisms suggesting that the extensional regimen deepens within the slab to the 700-750 ºC isotherm-depth. We suggest that in northern Chile the abrupt decrease of aftershocks in the lower part of the extensional regimen is caused by the absence of a hydrated slab at those depths.</p>

Intermediate-depth earthquake faulting by dehydration embrittlement with negative volume change

Nature ◽  
2004 ◽  
Vol 428 (6982) ◽  
pp. 545-549 ◽  
Author(s):  
Haemyeong Jung ◽  
Harry W. Green II ◽  
Larissa F. Dobrzhinetskaya
Keyword(s):  
Volume Change ◽  
Intermediate Depth ◽  
Earthquake Faulting ◽  
Intermediate Depth Earthquake ◽  
Negative Volume

scholarly journals Abundant aftershock sequence of the 2015 Mw7.5 Hindu Kush intermediate-depth earthquake

2018 ◽  
Vol 213 (2) ◽  
pp. 1121-1134 ◽  
Author(s):  
Chenyu Li ◽  
Zhigang Peng ◽  
Dongdong Yao ◽  
Hao Guo ◽  
Zhongwen Zhan ◽  
...  
Keyword(s):  
Aftershock Sequence ◽  
Intermediate Depth ◽  
Hindu Kush ◽  
Intermediate Depth Earthquake
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