P-wave residuals at Fiji from deep earthquakes in the Tonga subduction zone

1991 ◽  
Vol 81 (6) ◽  
pp. 2529-2529
Author(s):  
G. Prasad ◽  
G. Bock
Keyword(s):  
Subduction Zone ◽  
P Wave ◽  
Deep Earthquakes ◽  
Tonga Subduction Zone

scholarly journals Aftershock sequences of moderate-sized intermediate and deep earthquakes in the Tonga Subduction Zone

1997 ◽  
Vol 24 (16) ◽  
pp. 2059-2062 ◽  
Author(s):  
Douglas A. Wiens ◽  
H. J. Gilbert ◽  
B. Hicks ◽  
M. E. Wysession ◽  
P. J. Shore
Keyword(s):  
Subduction Zone ◽  
Deep Earthquakes ◽  
Aftershock Sequences ◽  
Tonga Subduction Zone

Systematic difference in the ISC body-wave magnitude-seismic moment relationship between intermediate and deep earthquakes

1992 ◽  
Vol 82 (2) ◽  
pp. 819-835
Author(s):  
Keiko Kuge
Keyword(s):  
Seismic Moment ◽  
Body Wave ◽  
Systematic Difference ◽  
P Wave ◽  
Local Structures ◽  
Dependent Relationship ◽  
Deep Earthquakes ◽  
Amplitude Data ◽  
Body Wave Magnitude ◽  
Distance Correction

Abstract There exists a systematic difference in the ISC body-wave magnitude (mbISC) - seismic moment (M0) relationship between intermediate and deep earthquakes around Japan. For earthquakes with the same M0, the mbISC for intermediate events is larger than that for deep events by 0.2 to 0.3 units. The mbISC discrepancy is attributed to the depth-distance correction in the procedure for determining the mbISC; a larger depth-distance correction (≈ 0.2) is made for the intermediate events than the deep events, irrespective of station distance. The discrepancy disappears if no depth-distance correction is made. I observe no depth-dependent relationship between the M0 and the JMA magnitudes (MJMA), which make a different depth-distance correction. No significant depth-dependent mbISC discrepancy appears in other regions; for example, around Tonga, I observe larger ISC P-wave amplitudes from deep events than intermediate events, which could cancel the effect of the depth-distance correction. The depth-dependent mbISC - M0 relationship around Japan is observed irrespective of whether the magnitudes are determined using the amplitude data at far or near stations, or whether stations are used in the dipping direction of the slab or not. The mbISC discrepancy for the same M0 cannot arise from local structures, radiation patterns, and station coverages. This is not attributable to the dataset of the M0 itself because no significant depth-dependent relationship between M0 and MJMA is observed.

scholarly journals P Wave Azimuthal Anisotropic Tomography in Northern Chile: Insight Into Deformation in the Subduction Zone

2019 ◽  
Vol 124 (1) ◽  
pp. 742-765 ◽  
Author(s):  
Zhouchuan Huang ◽  
Frederik Tilmann ◽  
Diana Comte ◽  
Dapeng Zhao
Keyword(s):  
Subduction Zone ◽  
P Wave ◽  
Northern Chile ◽  
Insight Into

scholarly journals Deep seismic structure of the Tonga subduction zone: Implications for mantle hydration, tectonic erosion, and arc magmatism

2011 ◽  
Vol 116 (B10) ◽  
Author(s):  
Eduardo Contreras-Reyes ◽  
Ingo Grevemeyer ◽  
Anthony B. Watts ◽  
Ernst R. Flueh ◽  
Christine Peirce ◽  
...  
Keyword(s):  
Subduction Zone ◽  
Arc Magmatism ◽  
Seismic Structure ◽  
Tonga Subduction Zone ◽  
Tectonic Erosion
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