scholarly journals Characteristic seismic activity in the subducting plate boundary zone off Kamaishi, northeastern Japan, revealed by precise hypocenter distribution analysis using ocean-bottom seismometers

2004 ◽  
Vol 31 (19) ◽  
Author(s):  
T. Okada
Keyword(s):  
Seismic Activity ◽  
Plate Boundary ◽  
Ocean Bottom ◽  
Distribution Analysis ◽  
Boundary Zone ◽  
Hypocenter Distribution ◽  
Northeastern Japan ◽  
Ocean Bottom Seismometers ◽  
Subducting Plate ◽  
Plate Boundary Zone

scholarly journals Hypocenter distribution of plate boundary zone off Fukushima, Japan, derived from ocean bottom seismometer data

2005 ◽  
Vol 57 (2) ◽  
pp. 93-105 ◽  
Author(s):  
Masanao Shinohara ◽  
Ryota Hino ◽  
Takashi Yoshizawa ◽  
Minoru Nishino ◽  
Toshinori Sato ◽  
...  
Keyword(s):  
Plate Boundary ◽  
Ocean Bottom ◽  
Ocean Bottom Seismometer ◽  
Boundary Zone ◽  
Hypocenter Distribution ◽  
Plate Boundary Zone

Principal Component Analysis as a Tool for Materials Characterization of the Plate Boundary — Seismic Activity Application in the Plate Boundary Zone of the Northeastern Japan Arc.

2009 ◽  
Vol 4 (2) ◽  
pp. 94-98 ◽  
Author(s):  
Mitsuhiro Toriumi ◽  
Keyword(s):  
Principal Component Analysis ◽  
Plate Boundary ◽  
Principal Component ◽  
Component Analysis ◽  
Materials Characterization ◽  
Boundary Zone ◽  
Northeastern Japan ◽  
Microseismic Activity ◽  
Plate Boundary Zone

We have analyzed microseismic activity in the boundary zone of the Northeastern Japan Arc by using principal component analysis for discrete units by 25 × 20 of the boundary zone with 10 km thick over the plate boundary. We found two types of reduced parameter trends in the region, concluding that the area has two types of evolutionary tracks; one of isolated activity and the other of strong correlated north-southactivity.

scholarly journals Distribution of the Pacific/North America motion in the Queen Charlotte Islands-S. Alaska plate boundary zone

2003 ◽  
Vol 30 (14) ◽  
Author(s):  
Stéphane Mazzotti ◽  
Roy D. Hyndman ◽  
Paul Flück ◽  
Alex J. Smith ◽  
Michael Schmidt
Keyword(s):  
North America ◽  
Plate Boundary ◽  
Boundary Zone ◽  
Queen Charlotte Islands ◽  
The Pacific ◽  
Plate Boundary Zone

Geodetic strain and the deformational history of the North Island of New Zealand during the late Cainozoic

1987 ◽  
Vol 321 (1557) ◽  
pp. 163-181 ◽  
Keyword(s):  
New Zealand ◽  
Subduction Zone ◽  
East Coast ◽  
Late Quaternary ◽  
Plate Boundary ◽  
Boundary Zone ◽  
Metamorphic Belt ◽  
Volcanic Region ◽  
The North ◽  
Plate Boundary Zone

The subduction zone under the east coast of the North Island of New Zealand comprises, from east to west, a frontal wedge, a fore-arc basin, uplifted basement forming the arc and the Central Volcanic Region. Reconstructions of the plate boundary zone for the Cainozoic from seafloor spreading data require the fore-arc basin to have rotated through 60° in the last 20 Ma which is confirmed by palaeomagnetic declination studies. Estimates of shear strain from geodetic data show that the fore-arc basin is rotating today and that it is under extension in the direction normal to the trend of the plate boundary zone. The extension is apparently achieved by normal faulting. Estimates of the amount of sediments accreted to the subduction zone exceed the volume of the frontal wedge: underplating by the excess sediments is suggested to be the cause of late Quaternary uplift of the fore-arc basin. Low-temperature—high-pressure metamorphism may therefore be occurring at depth on the east coast and high-temperature—low-pressure metamorphism is probable in the Central Volcanic Region. The North Island of New Zealand is therefore a likely setting for a paired metamorphic belt in the making.

Localized rifting at Chagos Bank in the India-Capricorn plate boundary zone

Geology ◽  
2004 ◽  
Vol 32 (3) ◽  
pp. 237 ◽  
Author(s):  
Timothy J. Henstock ◽  
Timothy A. Minshull
Keyword(s):  
Plate Boundary ◽  
Boundary Zone ◽  
Plate Boundary Zone
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