scholarly journals Nicoya earthquake rupture anticipated by geodetic measurement of the locked plate interface

2013 ◽  
Vol 7 (2) ◽  
pp. 117-121 ◽  
Author(s):  
Marino Protti ◽  
Victor González ◽  
Andrew V. Newman ◽  
Timothy H. Dixon ◽  
Susan Y. Schwartz ◽  
...  
Keyword(s):  
Earthquake Rupture ◽  
Geodetic Measurement ◽  
Locked Plate ◽  
Plate Interface

Persistent earthquake-rupture segmentation due to variable interseismic slip accumulation within the southern Hellenic subduction plate-interface zone in Greece

2020 ◽  
Author(s):  
Vasso Saltogianni ◽  
Vasiliki Mouslopoulou ◽  
Onno Oncken ◽  
Andrew Nicol ◽  
Michael Gianniou ◽  
...  
Keyword(s):  
Earthquake Rupture ◽  
Thrust Faults ◽  
Large Magnitude ◽  
Plate Interface ◽  
Slip Rates ◽  
Interface Zone ◽  
Fault Slip Rates ◽  
Fault Interactions ◽  
Gps Velocities ◽  
Subduction System

<p>Increasing evidence suggests that large thrust-faults that splay from the plate-interface to extend within the upper-plate have a significant impact on subduction seismogenesis. The manner in which these two elements, the plate-interface itself and its splay-thrust faults, interact with one another during the earthquake cycle remains, however, poorly explored. Here, we use GPS velocities, constrained by millennial fault slip-rates, to quantify the accumulation (and partitioning) of strain on individual faults of the plate-interface zone and capture their possible interactions. We zoom into the southern Hellenic Subduction System (HSS), where the greatest (M8.3) earthquake and tsunami ever recorded in the Mediterranean was produced by slip on a splay-thrust fault. Our analysis shows that the HSS is kinematically segmented and strain is accumulated at spatially variable rates along individual structures of the plate-interface zone. We find that insterseismic locking reaches up to ~85% and ~45% on the western and eastern segments, respectively, and on structures different to those that ruptured historically. Although the western HSS has been more active recently (e.g. 365 BC), the eastern HSS carries currently higher potential for large-magnitude (M>6) earthquakes andits interface-zone appears to be closer to failure. Elastic fault-interactions are responsible for both significant inter-segment variability in strain-accumulation and millennial uniformity in earthquake rupture-segmentation between eastern and western HSS.</p>

Slow Slip Transients Before the 2011 Tohoku-Oki Earthquake

2014 ◽  
Vol 9 (3) ◽  
pp. 311-316 ◽  
Author(s):  
Aitaro Kato ◽  
◽  
Keyword(s):  
Slow Slip ◽  
Dynamic Rupture ◽  
Geodetic Measurement ◽  
Spatiotemporal Evolution ◽  
Plate Interface ◽  
Slip Rates ◽  
Initiation Point ◽  
Repeating Earthquakes ◽  
Rupture Area ◽  
Foreshock Activity

I review a spatiotemporal evolution of slow-slip transients on the plate interface of the subducting Pacific plate that happened in and around the mainshock rupture area prior to the 2011 Tohoku-Oki earthquake. Based on foreshock activity before the mainshock, two sequences of slow-slip transients were identified by earthquake migrations toward the initiation point of the mainshock rupture. These two slow-slip transients were also detected by geodetic measurement. The second sequence of slow-slip transients, which involved large slip rates, may have caused significant stress loading onto the hypocenter of the mainshock and prompted the initiation of unstable dynamic rupture. In addition, decadal slip-behavior on the plate interface revealed by geodetic measurement and small repeating earthquakes show that slow-slip transients occurred in the down-dip and up-dip portions of the mainshock rupture area. These slow-slip transients imply the reduction of coupling between the subducting and overlying plates, that could be interpreted as the late stage of mega-thrust earthquake cycle, although this notion remains conjectural.

scholarly journals Elastic Fault Interactions and Earthquake Rupture Along the Southern Hellenic Subduction Plate Interface Zone in Greece

2020 ◽  
Vol 47 (13) ◽  
Author(s):  
Vasso Saltogianni ◽  
Vasiliki Mouslopoulou ◽  
Onno Oncken ◽  
Andrew Nicol ◽  
Michail Gianniou ◽  
...  
Keyword(s):  
Earthquake Rupture ◽  
Plate Interface ◽  
Interface Zone ◽  
Fault Interactions

Petrologic and geochemical role of serpentinite in subduction zones and plate interface domains

2015 ◽  
Vol 37 ◽  
pp. 61-64
Author(s):  
Marco Scambelluri ◽  
Enrico Cannaò ◽  
Mattia Gilio ◽  
Marguerite Godard
Keyword(s):  
Subduction Zones ◽  
Plate Interface

NEW METHODS OF ACCOUNTING FOR VERTICAL REFRACTION WITH TRIGONOMETRIC LIVELING IN THE CONDITIONS OF THE REPUBLIC OF UZBEKISTAN

2018 ◽  
pp. 55-57
Author(s):  
A.S. Suyunov ◽  
U.A. Berdiculov ◽  
Sh.A. Suyunov
Keyword(s):  
Refraction Coefficient ◽  
Geodetic Measurement ◽  
Ordinary Method ◽  
New Methods ◽  
Geodetic Measurements ◽  
The Republic ◽  
Vertical Gradients

In the conditions of Uzbekistan, a simple and ordinary method of refraction is used to determine the relative elevations without vertical refraction coefficient or angle. Described that these methods require a two-sided simultaneous or non-simultaneous geodetic measurements. Working formulas for vertical refraction are presented by calculating vertical gradients in geodetic measurement points.

INSIGHTS INTO EARTHQUAKE RUPTURE AND RECOVERY FROM PALEOSEISMIC FAULTS

2016 ◽  
Author(s):  
Christie D. Rowe ◽  
◽  
W. Ashley Griffith ◽  
Catherine Ross ◽  
Benjamin Melosh ◽  
...  
Keyword(s):  
Earthquake Rupture
Sign in / Sign up

Export Citation Format

Share Document