scholarly journals THE ALASKA CONVERGENT MARGIN BACKSTOP SPLAY FAULT ZONE, A POTENTIAL LARGE TSUNAMI GENERATOR BETWEEN THE FRONTAL PRISM AND CONTINENTAL FRAMEWORK

2020 ◽  
Author(s):  
Roland von Huene ◽  
John J. Miller ◽  
Anne Krabbenhoeft
Keyword(s):  
Fault Zone ◽  
Convergent Margin ◽  
Splay Fault ◽  
Large Tsunami

A Possible Source Mechanism of the 1946 Unimak Alaska Far-Field Tsunami: Uplift of the Mid-Slope Terrace Above a Splay Fault Zone

2016 ◽  
pp. 4189-4201
Author(s):  
Roland von Huene ◽  
John J. Miller ◽  
Dirk Klaeschen ◽  
Peter Dartnell
Keyword(s):  
Fault Zone ◽  
Source Mechanism ◽  
Far Field ◽  
Splay Fault

scholarly journals Structure, texture, and physical properties of accretionary prism sediments and fluid flow near the splay fault zone in the Nankai Trough, off Kii Peninsula

2010 ◽  
Vol 116 (12) ◽  
pp. 637-660 ◽  
Author(s):  
Ryo Anma ◽  
Yujiro Ogawa ◽  
Kiichiro Kawamura ◽  
Gregory Moore ◽  
Tomoyuki Sasaki ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Physical Properties ◽  
Fault Zone ◽  
Nankai Trough ◽  
Accretionary Prism ◽  
Kii Peninsula ◽  
Splay Fault

scholarly journals Subducting oceanic basement roughness impacts on upper-plate tectonic structure and a backstop splay fault zone activated in the southern Kodiak aftershock region of the Mw 9.2, 1964 megathrust rupture, Alaska

Geosphere ◽  
2021 ◽  
Vol 17 (2) ◽  
pp. 409-437 ◽  
Author(s):  
Anne Krabbenhoeft ◽  
Roland von Huene ◽  
John J. Miller ◽  
Dirk Klaeschen
Keyword(s):  
Fault Zone ◽  
Velocity Structure ◽  
P Wave ◽  
Plate Interface ◽  
P Wave Velocity ◽  
Middle Slope ◽  
Oceanic Basement ◽  
Splay Fault ◽  
P Wave Velocity Structure ◽  
Aftershock Region

Abstract In 1964, the Alaska margin ruptured in a giant Mw 9.2 megathrust earthquake, the second largest during worldwide instrumental recording. The coseismic slip and aftershock region offshore Kodiak Island was surveyed in 1977–1981 to understand the region’s tectonics. We re-processed multichannel seismic (MCS) field data using current standard Kirchhoff depth migration and/or MCS traveltime tomography. Additional surveys in 1994 added P-wave velocity structure from wide-angle seismic lines and multibeam bathymetry. Published regional gravity, backscatter, and earthquake compilations also became available at this time. Beneath the trench, rough oceanic crust is covered by ∼3–5-km-thick sediment. Sediment on the subducting plate modulates the plate interface relief. The imbricate thrust faults of the accreted prism have a complex P-wave velocity structure. Landward, an accelerated increase in P-wave velocities is marked by a backstop splay fault zone (BSFZ) that marks a transition from the prism to the higher rigidity rock beneath the middle and upper slope. Structures associated with this feature may indicate fluid flow. Farther upslope, another fault extends >100 km along strike across the middle slope. Erosion from subducting seamounts leaves embayments in the frontal prism. Plate interface roughness varies along the subduction zone. Beneath the lower and middle slope, 2.5D plate interface images show modest relief, whereas the oceanic basement image is rougher. The 1964 earthquake slip maximum coincides with the leading and/or landward flank of a subducting seamount and the BSFZ. The BSFZ is a potentially active structure and should be considered in tsunami hazard assessments.

A Possible Source Mechanism of the 1946 Unimak Alaska Far-Field Tsunami: Uplift of the Mid-Slope Terrace Above a Splay Fault Zone

2016 ◽  
Vol 173 (12) ◽  
pp. 4189-4201 ◽  
Author(s):  
Roland von Huene ◽  
John J. Miller ◽  
Dirk Klaeschen ◽  
Peter Dartnell
Keyword(s):  
Fault Zone ◽  
Source Mechanism ◽  
Far Field ◽  
Splay Fault

Shear strength behavior of Mont Terri Opalinus Claystone in fault zone

2015 ◽  
Vol 10 (1) ◽  
pp. 31-38
Author(s):  
Ildikó Buocz ◽  
Nikoletta Rozgonyi-Boissinot ◽  
Ákos Török
Keyword(s):  
Shear Strength ◽  
Fault Zone ◽  
Strength Behavior ◽  
Mont Terri

Development of the Sorong Fault Zone North of Misool Eastern Indonesia

2018 ◽  
Author(s):  
Afif Saputra
Keyword(s):  
Fault Zone ◽  
Eastern Indonesia

Ultra-High-Resolution 3D (UHR3D) Seismic Survey - Application to Hinagu Fault Zone, Yatsushiro Sea, Kyushu, Japan -

2018 ◽  
Vol 71 (0) ◽  
pp. 33-42
Author(s):  
Shigeru Ino ◽  
Shigeyuki Suda ◽  
Hidekuni Kikuchi ◽  
Shiro Ohkawa ◽  
Shintaro Abe ◽  
...  
Keyword(s):  
High Resolution ◽  
Fault Zone ◽  
Seismic Survey ◽  
Yatsushiro Sea
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