Aftershock seismicity of the 27 February 2010 Mw 8.8 Maule earthquake rupture zone

2012 ◽  
Vol 317-318 ◽  
pp. 413-425 ◽  
Author(s):  
Dietrich Lange ◽  
Frederik Tilmann ◽  
Sergio E. Barrientos ◽  
Eduardo Contreras-Reyes ◽  
Pascal Methe ◽  
...  
Keyword(s):  
Rupture Zone ◽  
Earthquake Rupture ◽  
Maule Earthquake

Real-Time Tsunami Prediction System Using DONET

2017 ◽  
Vol 12 (4) ◽  
pp. 766-774 ◽  
Author(s):  
Narumi Takahashi ◽  
Kentaro Imai ◽  
Masanobu Ishibashi ◽  
Kentaro Sueki ◽  
Ryoko Obayashi ◽  
...  
Keyword(s):  
Real Time ◽  
Time Lag ◽  
Rupture Zone ◽  
Tsunami Source ◽  
Earthquake Rupture ◽  
Prediction System ◽  
Fault Models ◽  
Tsunami Height ◽  
Inundation Area ◽  
Selection Of

We constructed a real-time tsunami prediction system using the Dense Oceanfloor Network System for Earthquakes and Tsunamis (DONET). This system predicts the arrival time of a tsunami, the maximum tsunami height, and the inundation area around coastal target points by extracting the proper fault models from 1,506 models based on the principle of tsunami amplification. Since DONET2, installed in the Nankai earthquake rupture zone, was constructed in 2016, it has been used in addition to DONET1 installed in the Tonankai earthquake rupture zone; we revised the system using both DONET1 and DONET2 to improve the accuracy of tsunami prediction. We introduced a few methods to improve the prediction accuracy. One is the selection of proper fault models from the entire set of models considering the estimated direction of the hypocenter using seismic and tsunami data. Another is the dynamic selection of the proper DONET observatories: only DONET observatories located between the prediction point and tsunami source are used for prediction. Last is preparation for the linked occurrence of double tsunamis with a time-lag. We describe the real-time tsunami prediction system using DONET and its implementation for the Shikoku area.

scholarly journals Detailed seismic imaging of the Mw 7.1 Ridgecrest earthquake rupture zone from data recorded by dense linear arrays

2020 ◽  
Author(s):  
Hongrui Qiu ◽  
Yehuda Ben-Zion ◽  
R. D. Catchings ◽  
Mark R Goldman ◽  
Amir Allam ◽  
...  
Keyword(s):  
Seismic Imaging ◽  
Rupture Zone ◽  
Earthquake Rupture ◽  
Linear Arrays

scholarly journals Seafloor changes above the Tohoku-Oki earthquake rupture zone

Eos ◽  
2014 ◽  
Vol 95 (50) ◽  
pp. 484-484
Author(s):  
Jessica Orwig
Keyword(s):  
Rupture Zone ◽  
Earthquake Rupture

scholarly journals Seismic rate variations prior to the 2010 Maule, Chile MW 8.8 giant megathrust earthquake

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Benoit Derode ◽  
Raúl Madariaga ◽  
Jaime Campos
Keyword(s):  
Time Scales ◽  
Seismic Activity ◽  
Main Shock ◽  
Rupture Zone ◽  
Aftershock Activity ◽  
Plate Interface ◽  
Megathrust Earthquake ◽  
Irregular Pattern ◽  
Maule Earthquake ◽  
Short Time

AbstractThe MW 8.8 Maule earthquake is the largest well-recorded megathrust earthquake reported in South America. It is known to have had very few foreshocks due to its locking degree, and a strong aftershock activity. We analyze seismic activity in the area of the 27 February 2010, MW 8.8 Maule earthquake at different time scales from 2000 to 2019. We differentiate the seismicity located inside the coseismic rupture zone of the main shock from that located in the areas surrounding the rupture zone. Using an original spatial and temporal method of seismic comparison, we find that after a period of seismic activity, the rupture zone at the plate interface experienced a long-term seismic quiescence before the main shock. Furthermore, a few days before the main shock, a set of seismic bursts of foreshocks located within the highest coseismic displacement area is observed. We show that after the main shock, the seismic rate decelerates during a period of 3 years, until reaching its initial interseismic value. We conclude that this megathrust earthquake is the consequence of various preparation stages increasing the locking degree at the plate interface and following an irregular pattern of seismic activity at large and short time scales.

scholarly journals Strong aftershocks in the northern segment of the Wenchuan earthquake rupture zone and their seismotectonic implications

2010 ◽  
Vol 62 (11) ◽  
pp. 881-886 ◽  
Author(s):  
Yong Zheng ◽  
Sidao Ni ◽  
Zujun Xie ◽  
Jian Lv ◽  
Hongsheng Ma ◽  
...  
Keyword(s):  
Wenchuan Earthquake ◽  
Rupture Zone ◽  
Earthquake Rupture ◽  
The Wenchuan Earthquake ◽  
Northern Segment
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