Results 21 to 30 of about 1,774 (199)

On the biannually repeating slow‐slip events at the Ryukyu Trench, southwestern Japan [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2008
Global positioning system data show that about 20 slow‐slip events occurred during 1997–2007 in the southwestern part of the Ryukyu Arc, Japan, where large interplate thrust earthquakes are not known to have occurred in spite of relatively fast plate convergence.
Heki, Kosuke, Kataoka, Takeshi
openaire   +2 more sources

Paleotsunami research along the Nankai Trough and Ryukyu Trench subduction zones – Current achievements and future challenges [PDF]

open access: yesEarth-Science Reviews, 2020
Abstract Located near Japan's most densely populated and industrially active region, the Nankai Trough subduction zone has long been highlighted as a high-risk area for damaging earthquakes and tsunamis. In contrast, less attention has been paid the adjacent Ryukyu Trench because historical and geological records are scarce.
Fujiwara, Osamu   +3 more
openaire   +2 more sources

Aseismic crustal movement in southern Ryukyu Trench, southwest Japan [PDF]

open access: yesGeophysical Research Letters, 2009
Anomalous crustal deformation following the Mw = 7.1, March 31, 2002, Hualien earthquake was observed over 5 years using the global positioning system (GPS) network in the south Ryukyu Islands. The analysis showed an afterslip event at a depth of 30 km on the subducting Philippine Sea plate. The magnitude of the cumulative moment reached 7.4.
openaire   +1 more source

Variations in seismic velocity distribution along the Ryukyu (Nansei-Shoto) Trench subduction zone at the northwestern end of the Philippine Sea plate

open access: yesEarth, Planets and Space, 2017
The Ryukyu (Nansei-Shoto) island arc-trench system, southwest of Japan, is formed by the subduction of the Philippine Sea (PHS) plate. Among the subduction zones surrounding the Japan Islands, the Ryukyu arc-trench system is unique in that its backarc ...
Azusa Nishizawa   +5 more
doaj   +1 more source

Low-frequency earthquakes along the Ryukyu Islands triggered by teleseismic earthquakes

open access: yesEarth, Planets and Space, 2021
Tremors and low-frequency earthquakes (LFEs), which occur in the plate interface, can provide useful information about the state of aseismic stress transfer in mega-earthquake fault zones.
Ayumi Kinjo, Mamoru Nakamura
doaj   +1 more source

High-density surveys conducted to reveal active deformations of the upper forearc slope along the Ryukyu Trench, western Pacific, Japan

open access: yesProgress in Earth and Planetary Science, 2018
In this study, which was conducted to investigate present-day geological deformations occurring off the central Ryukyu Arc along the Ryukyu Trench (Okinawa-jima) in the vicinity of Japan, we obtained and examined dense, high-resolution, 2D grid (high ...
Kohsaku Arai   +2 more
doaj   +1 more source

A Decade of Global Navigation Satellite System/Acoustic Measurements of Back-Arc Spreading in the Southwestern Okinawa Trough

open access: yesFrontiers in Earth Science, 2021
Long-term seafloor geodetic measurements are important for constraining submarine crustal deformation near plate boundaries. Here we present an integrated analysis of a decade of GNSS/acoustic data collected at a site 60 km to the east of northeast ...
Horng-Yue Chen   +11 more
doaj   +1 more source

Estimating the horizontal and vertical direction-of-arrival of water-borne seismic signals in the northern Philippine Sea [PDF]

open access: yes, 2013
Author Posting. © Acoustical Society of America, 2013. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution.
Baggeroer, Arthur B.   +9 more
core   +1 more source

Back-arc opening and the mode of subduction [PDF]

open access: yes, 1979
Trench-arc systems (subduction zones) can be classified into two types depending on whether or not actively opening back-arc basins are associated with them.
Kanamori, Hiroo, Uyeda, Seiya
core   +1 more source

Missing western half of the Pacific Plate: Geochemical nature of the Izanagi-Pacific Ridge interaction with a stationary boundary between the Indian and Pacific mantles [PDF]

open access: yes, 2015
The source mantle of the basaltic ocean crust on the western half of the Pacific Plate was examined using Pb–Nd–Hf isotopes. The results showed that the subducted Izanagi–Pacific Ridge (IPR) formed from both Pacific (180–∼80 Ma) and Indian (∼80–70 Ma ...
Allegre   +136 more
core   +1 more source

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