Results 51 to 60 of about 2,198 (213)

Fault Volume Digital Twin to Reproduce the Full Slip Spectrum, Scaling, and Statistical Laws

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Seismological and geodetic observations of fault zones reveal diverse slip dynamics, scaling, and statistical laws. Existing mechanisms explain some but not all of these behaviors. We show that incorporating an off‐fault damage zone—characterized by distributed fractures surrounding a main fault—can reproduce many key features observed in ...
M. Almakari, N. Kheirdast, C. Villafuerte, M. Y. Thomas, P. Dubernet, J. Cheng, A. Gupta, P. Romanet, S. Chaillat, H. S. Bhat   +9 more
wiley   +1 more source

Depth‐Integrated Boron Inventories of Subducting Oceanic Plates: New Insights From Sediments and Altered Oceanic Crust at ODP Sites 1179, 1173, and DSDP Site 443

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Boron (B) is a highly fluid‐mobile tracer of slab‐derived fluids in subduction zones; however, the quantitative comparisons of B input among different oceanic plates remain poorly constrained. Here, we present a geochemical study of the sediments, chert, and altered oceanic crust (AOC) from three DSDP/ODP Sites (443, 1173, and 1179 ...
Masaya Miyoshi, Takashi Sano, Toshiaki Hasenaka, Yasushi Mori, Takaaki Fukuoka   +4 more
wiley   +1 more source

New hypothesis to explain Quaternary forearc deformation and the variety of plate boundary earthquakes along the Suruga–Nankai Trough by oblique subduction of undulations on the Philippine Sea Plate

Earth, Planets and Space, 2020
Plate-boundary earthquakes of magnitude 8 or greater along the Suruga–Nankai Trough subduction zone have repeated at intervals of 90–150 years, but with widely varying magnitudes and rupture areas.
Yukinobu Okamura, Masanobu Shishikura
doaj   +1 more source

Trophic Relationships Between a Seep Calamyzine Worm and Its Vesicomyid Clam Host Inferred From Multiple Lines of Isotopic Evidence

Marine Ecology, Volume 47, Issue 3, May/June 2026.
ABSTRACT Calamyzine worms are often found in mantle cavities of large chemosymbiotic bivalves in deep‐sea chemosynthesis‐based ecosystems, but the nature of trophic interactions between the worms and their clam hosts remains largely obscure. Here, we combine bulk tissue carbon and nitrogen stable isotope analyses with radiocarbon and nitrogen compound ...
Chong Chen, Naoto Jimi, Hidetaka Nomaki, Naoto F. Ishikawa   +3 more
wiley   +1 more source

Characteristics of Seismic Energy Rate Functions of Shallow Tremors

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract We investigated the energy rate functions of shallow tremors southeast of the Kii Peninsula in the Nankai subduction zone. Unimodal functions (triangle or bell‐shaped) explain the characteristics of small (<104 J) shallow tremors. As the seismic radiated energy increases, the energy rate functions become more complex and are better ...
Shunsuke Takemura, Suguru Yabe
wiley   +1 more source

Comparative Analysis of Seismicity Across Three Depth‐Dependent Slip Regimes in the Japan Trench Subduction Zone

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Understanding the cause of spatial variations in seismicity is crucial for comprehending the physics governing earthquake activity. Off Iwate, in the northern Japan Trench subduction zone, the plate boundary can be divided into three distinct zones based on depth‐dependent slip regimes: the slow earthquake, asperity, and stable creeping zones.
Yuta Ito, Tomoaki Nishikawa, Yoshihiro Ito, Shukei Ohyanagi, Hiroyuki Noda   +4 more
wiley   +1 more source

Asthenospheric Flow From East Asia to the Philippine Sea Plate Revealed by Rj‐MCMC Inversion of Surface Waves

Geochemistry, Geophysics, Geosystems, 2022
The Pacific and Philippine Sea Plate subductions have resulted in and controlled the development of a typical trench‐arc‐back‐arc system in NE Asia since the Cenozoic.
Yanzhe Zhao, Zhen Guo, Yanbin Wang
doaj   +1 more source

Workshop explores seismogenic zone drilling in the Nankai trough [PDF]

Eos, Transactions American Geophysical Union, 2001
Drilling into the seismogenic zone of an active convergent plate margin and installing a deep borehole observatory in its subduction megathrust are high priorities for the early stages of the new Integrated Ocean Drilling Program (IODP). The Nankai Trough off southwest Japan is one of the most active great earthquake‐generating regions on Earth. Nankai
A. Taira, G. Moore, H. Tobin, G. Kimura, S. Kodaira   +4 more
openaire   +1 more source

Shallow Creep in the Leaky Stress Shadow of Locked Zones of Subduction Megathrust

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract In some subduction zones such as Nankai, creeping of the shallow part of the megathrust in the stress shadow of deeper locked zones is detected by seafloor geodetic measurements and/or reflected by slow earthquakes (SEQs). Here we explain that shallow creep occurs in the stress shadow for two reasons: (a) prolonged afterslip and (b) a leaky ...
Kelin Wang, Yajing Liu, Tianhaozhe Sun
wiley   +1 more source

On the Application of 1 Versus 2 State Variable Rate‐and‐State Friction Laws: An Example From the Nankai Trough Megasplay Fault Zone

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Frictional slip behavior in fault zones can be analyzed with friction laws using 1 or 2 state variables, but the physical meaning and applicability of the 2‐state variable form of the law remain unclear. Here, we re‐analyze friction experiments by Roesner et al. (2022, https://doi.org/10.1186/s40623‐022‐01728‐w) using a natural sample from the
Matt J. Ikari, Alexander Roesner
wiley   +1 more source