Results 21 to 30 of about 3,313 (254)

Okinawa Trough geophysical and topographic modeling by GDAL utilities and GRASS GIS [PDF]

Podzemni Radovi, 2021
This paper presents using GDAL utilities and GRASS GIS for topographic analysis of the raster grids based on GEBCO DEM as NetCDF file at 15 arc-second intervals.
Lemenkova Polina
doaj   +1 more source

Gravity inversion constrained by OBS receiver function reveals crustal structure in Ryukyu Trench

Frontiers in Earth Science, 2023
The Ryukyu Trench is located in the northern Philippine Sea. The subduction of the Philippine Sea Plate to the Eurasia Plate along the Ryukyu Trench in the NNW direction leads to extremely complex tectonic processes such as subduction, collision ...
Tingwei Yang, Tingwei Yang, Ya Xu, Ya Xu, Ya Xu, Nanqiao Du, Tao Xu, Tao Xu, Danping Cao, Fangzhou Nan, Fangzhou Nan, Fangzhou Nan, Wei Chu, Ce Liang, Tianyao Hao, Tianyao Hao, Tianyao Hao   +16 more
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Variations in the crustal structure and strength of plate coupling along the Ryukyu subduction zone

Geoscience Letters, 2023
The Ryukyu trench-arc-back arc system is part of the subduction margins of the Philippine Sea plate. Previous studies have indicated that several geophysical and geological characteristics reveal significant variations (including convergent rate ...
Wen-Bin Doo, Chung-Liang Lo, Yin-Sheng Huang, Wen-Nan Wu, Shiou-Ya Wang   +4 more
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Slab Pull Drives IBM Trench Advance Despite the Weakened Philippine Sea Plate

Geophysical Research Letters, 2023
The mechanism behind the significant Izu‐Bonin‐Mariana (IBM) trench advance is still controversial. We conduct slab subduction numerical models that reproduce the spatio‐temporal tectonic evolution of the Philippine Sea region to investigate whether slab
Huizi Jian, Ting Yang, Zhihao Chen, Lingling Ye, Jiashun Hu, Peng Guo   +5 more
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A Decade of Global Navigation Satellite System/Acoustic Measurements of Back-Arc Spreading in the Southwestern Okinawa Trough

Frontiers 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, Ryoya Ikuta, Ya-Ju Hsu, Toshiaki Tsujii, Masataka Ando, Yoko Tu, Takeru Kohmi, Kiyomichi Takemoto, Koto Mizuno, Hsin Tung, Chin-Shang Ku, Cheng-Horng Lin   +11 more
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Distribution of b-value in the central and southern Ryukyu: is the low b-value in the rift-axis of the Okinawa Trough accurate?

Earth, Planets and Space, 2022
Here, I investigated whether the b-value in the rift-axis of the Okinawa Trough, a back-arc basin, is low. The cause of the low b-value in the rift-axis of the Okinawa Trough had previously been interpreted as increased stress by dyke intrusion. However,
Mamoru Nakamura
doaj   +1 more source

Variation in mitochondrial DNA of Vietnamese pigs: Relationships with Asian domestic pigs and Ryukyu wild boars [PDF]

, 2002
Mitochondrial DNA (mtDNA) sequences (574 bp) of 30 Vietnamese pigs (large and small) were examined and compared with those of 61 haplotypes from wild boars and domestic pigs from various locations in Asia.
ANEZAKI Tomoko, BINH Dang Vu, HONGO Hitomi, ISHIGURO Naotaka, LONG Vu The, NAM Nguyen Huu, SHIGEHARA Nobuo, TIEN Nguyen Trong, WATANOBE Takuma, 一美 本郷   +9 more
core   +4 more sources

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

Progress 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, Takahiko Inoue, Tomoyuki Sato   +2 more
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Variations in seismic velocity distribution along the Ryukyu (Nansei-Shoto) Trench subduction zone at the northwestern end of the Philippine Sea plate

Earth, 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, Kentaro Kaneda, Mitsuhiro Oikawa, Daishi Horiuchi, Yukari Fujioka, Chiaki Okada   +5 more
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Low-frequency earthquakes along the Ryukyu Islands triggered by teleseismic earthquakes

Earth, 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