Results 31 to 40 of about 347 (171)

Punctuated growth of an accretionary prism and the onset of a seismogenic megathrust in the Nankai Trough

open access: yesProgress in Earth and Planetary Science, 2018
Ocean drilling in the Nankai Trough forearc suggests a new scenario for the evolution of the Nankai subduction zone. Continuous subduction since the Late Cretaceous has been a common tectonic scenario, although the plate subduction was transferred from ...
Gaku Kimura, Hiroaki Koge, Takeshi Tsuji
doaj   +1 more source

Bridging the gap between low-frequency and very-low-frequency earthquakes

open access: yesEarth, Planets and Space, 2020
Slow earthquakes that are observed in the > 1 Hz frequency band are called tectonic tremor or low-frequency earthquakes (LFEs) and those in the 0.01–0.10 Hz band are called very-low-frequency earthquakes (VLFEs).
Koki Masuda   +3 more
doaj   +1 more source

Distribution and depth of bottom-simulating reflectors in the Nankai subduction margin

open access: yesEarth, Planets and Space, 2018
Surface heat flow has been observed to be highly variable in the Nankai subduction margin. This study presents an investigation of local anomalies in surface heat flows on the undulating seafloor in the Nankai subduction margin.
Akihiro Ohde   +3 more
doaj   +1 more source

Geological record of prehistoric tsunamis in Mugi town, facing the Nankai Trough, western Japan

open access: yesProgress in Earth and Planetary Science, 2019
Stratigraphic and paleontological investigations in Mugi Town, on the Pacific coast of Shikoku Island, revealed evidence of as many as five tsunami inundations from events along the Nankai Trough between 5581 and 3640 cal yr BP.
Yumi Shimada   +10 more
doaj   +1 more source

Filling the Gap in Cascadia: The Emergence of Low‐Amplitude Long‐Term Slow Slip

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Long‐term slow slip events have been observed at several subduction zones around the globe, where they play an integral part in strain release along megathrust faults.
Carolyn P. Nuyen, David A. Schmidt
doaj   +1 more source

Capturing 50 Years of Postseismic Mantle Flow at Nankai Subduction Zone [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2018
AbstractWe combine Global Positioning System, leveling, and tide gauge records of vertical motion in southwest Japan spanning postseismic deformation following the 1944 M8.1 Tonankai and 1946 M8.4 Nankai earthquakes. Continuous tide gauge records from 1950 to 2015 are combined with leveling data recorded from 1947 to 1980 and Global Positioning System ...
Kaj M. Johnson, Douglas Tebo
openaire   +1 more source

ICDP Workshop on Borehole Monitoring at the Nankai Subduction Zone: Building a Land-Ocean Borehole Network to Study the Seismogenic Zone [PDF]

open access: yesScientific Drilling, 2008
Examples of subduction processes are currently investigated around the Kii Peninsula, Honshu Island by Japanese as well as international projects. The most well-known is the NanTroSEIZE project conducted by the Integrated Ocean Drilling Program (IODP ...
Takeshi Sagiya
doaj   +1 more source

Long-term slow slip events along the Nankai trough delayed by the 2016 Kumamoto earthquake, Japan

open access: yesEarth, Planets and Space, 2020
The Global Navigation Satellite System network in Japan detected transient crustal deformation along the Nankai trough, Japan, from June 2018. Time-dependent inversion analysis shows that a long-term slow slip event in northern Hyuga-nada Sea along the ...
Shinzaburo Ozawa   +3 more
doaj   +1 more source

Probabilistic tsunami hazard assessment based on the Gutenberg–Richter law in eastern Shikoku, Nankai subduction zone, Japan

open access: yesEarth, Planets and Space, 2022
Earthquake and tsunami predictions comprise huge uncertainties, thus necessitating probabilistic assessments for the design of defense facilities and urban planning.
Toshitaka Baba   +6 more
doaj   +1 more source

Near-Field Body-Wave Extraction From Ambient Seafloor Noise in the Nankai Subduction Zone

open access: yesFrontiers in Earth Science, 2021
Ambient noise correlation is capable of retrieving waves propagating between two receivers. Although waves retrieved using this technique are primarily surface waves, the retrieval of body waves, including direct, refracted, and reflected waves, has also
Takashi Tonegawa   +2 more
doaj   +1 more source

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