scholarly journals Crustal structure of southern Madagascar from receiver functions and ambient noise correlation: Implications for crustal evolution

2017 ◽  
Vol 122 (2) ◽  
pp. 1179-1197 ◽  
Author(s):  
E. J. Rindraharisaona ◽  
F. Tilmann ◽  
X. Yuan ◽  
G. Rümpker ◽  
J. Giese ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Ambient Noise ◽  
Receiver Functions ◽  
Noise Correlation ◽  
Crustal Evolution

scholarly journals Crustal structure beneath Tierra del Fuego, Argentina, inferred from seismic P-wave receiver functions and ambient noise autocorrelations

2019 ◽  
Vol 751 ◽  
pp. 41-53 ◽  
Author(s):  
Carolina Buffoni ◽  
Martin Schimmel ◽  
Nora Cristina Sabbione ◽  
María Laura Rosa ◽  
Gerardo Connon
Keyword(s):  
Crustal Structure ◽  
Ambient Noise ◽  
Receiver Functions ◽  
Tierra Del Fuego ◽  
P Wave

High resolution 3-D crustal structure beneath NE China from joint inversion of ambient noise and receiver functions using NECESSArray data

2015 ◽  
Vol 416 ◽  
pp. 1-11 ◽  
Author(s):  
Zhen Guo ◽  
Y. John Chen ◽  
Jieyuan Ning ◽  
Yongge Feng ◽  
Stephen P. Grand ◽  
...  
Keyword(s):  
High Resolution ◽  
Crustal Structure ◽  
Ambient Noise ◽  
Joint Inversion ◽  
Receiver Functions ◽  
Ne China

scholarly journals Structure of the Ecuadorian forearc from the joint inversion of receiver functions and ambient noise surface waves

2020 ◽  
Vol 222 (3) ◽  
pp. 1671-1685 ◽  
Author(s):  
Clinton D Koch ◽  
Colton Lynner ◽  
Jonathan Delph ◽  
Susan L Beck ◽  
Anne Meltzer ◽  
...  
Keyword(s):  
Oceanic Crust ◽  
Crustal Structure ◽  
Ambient Noise ◽  
Joint Inversion ◽  
Receiver Functions ◽  
Surface Wave Dispersion ◽  
Data Set ◽  
Megathrust Earthquakes ◽  
High Magnitude ◽  
Accreted Terranes

SUMMARY The Ecuadorian forearc is a complex region of accreted terranes with a history of large megathrust earthquakes. Most recently, a Mw 7.8 megathrust earthquake ruptured the plate boundary offshore of Pedernales, Ecuador on 16 April 2016. Following this event, an international collaboration arranged by the Instituto Geofisico at the Escuela Politécnica Nacional mobilized a rapid deployment of 65 seismic instruments along the Ecuadorian forearc. We combine this new seismic data set with 14 permanent stations from the Ecuadorian national network to better understand how variations in crustal structure relate to regional seismic hazards along the margin. Here, we present receiver function adaptive common conversion point stacks and a shear velocity model derived from the joint inversion of receiver functions and surface wave dispersion data obtained through ambient noise cross-correlations for the upper 50 km of the forearc. Beneath the forearc crust, we observe an eastward dipping slow velocity anomaly we interpret as subducting oceanic crust, which shallows near the projected centre of the subducting Carnegie Ridge. We also observe a strong shallow positive conversion in the Ecuadorian forearc near the Borbon Basin indicating a major discontinuity at a depth of ∼7 km. This conversion is not ubiquitous and may be the top of the accreted terranes. We also observe significant north–south changes in shear wave velocity. The velocity changes indicate variations in the accreted terranes and may indicate an increased amount of hydration beneath the Manabí Basin. This change in structure also correlates geographically with the southern rupture limit of multiple high magnitude megathrust earthquakes. The earthquake record along the Ecuadorian trench shows that no event with a Mw >7.4 has ruptured south of ∼0.5°S in southern Ecuador or northern Peru. Our observations, along with previous studies, suggest that variations in the forearc crustal structure and subducting oceanic crust may influance the occurrence and spatial distribution of high magnitude seismicity in the region.

Crustal structure of the Gujarat region, India: New constraints from the analysis of teleseismic receiver functions

2014 ◽  
Vol 96 ◽  
pp. 237-254 ◽  
Author(s):  
Sumer Chopra ◽  
Tao-Ming Chang ◽  
Sowrav Saikia ◽  
R.B.S. Yadav ◽  
Pallabee Choudhury ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Receiver Functions

scholarly journals Multistep modelling of teleseismic receiver functions combined with constraints from seismic tomography: crustal structure beneath southeast China

2011 ◽  
Vol 187 (1) ◽  
pp. 303-326 ◽  
Author(s):  
Hrvoje Tkalčić ◽  
Youlin Chen ◽  
Ruifeng Liu ◽  
Huang Zhibin ◽  
Li Sun ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Seismic Tomography ◽  
Receiver Functions ◽  
Southeast China

scholarly journals Landslide monitoring using seismic ambient noise correlation: challenges and applications

2021 ◽  
pp. 103518
Author(s):  
Mathieu Le Breton ◽  
Noélie Bontemps ◽  
Antoine Guillemot ◽  
Laurent Baillet ◽  
Éric Larose
Keyword(s):  
Ambient Noise ◽  
Landslide Monitoring ◽  
Noise Correlation ◽  
Seismic Ambient Noise
Sign in / Sign up

Export Citation Format

Share Document