Patterns of deep seismicity reflect buoyancy stresses due to phase transitions
نویسندگان
چکیده
منابع مشابه
Patterns of deep seismicity reflect buoyancy stresses due to phase transitions
Thermal perturbation of mantle phase relations in subduction zones gives rise to significant buoyancy anomalies. Finite element modeling of stresses arising from these anomalies reveals transition from principal tension to compression near ∼400 km depth, down-dip compression over ∼400-690 km (peaking at ∼550 km), and transition to rapidly fading tension below ∼690 km. Such features, even when c...
متن کاملPrecursory Seismicity Patterns
Mature seismic gaps are defined here as gaps in which a possible precursor to a future event has been identified. The seismic potential of these seismic gaps is enhanced relative to immature seismic gaps. The seismic gap hypothesis by itself provides an excellent means of narrowing spatial limits along plate boundaries within which the great earthquakes of the next several decades are expected....
متن کاملStudies of Structural Patterns at Phase Transitions
The work described in this thesis comprises two distinct components. In the first part, Monte-Carlo computer simulation methods are employed within a finite-size scaling framework to investigate both universal and non-universal behaviour in two scalar models, the 1-d 04 model and the 2-d Lennard-Jones fluid. In both these models the properties of interest are obtained from studies of the large-...
متن کاملEEG phase patterns reflect the selectivity of neural firing.
Oscillations are pervasive in encephalographic signals and supposedly reflect cognitive processes and sensory representations. While the relation between oscillation amplitude (power) and sensory-cognitive variables has been extensively studied, recent work reveals that the dynamic oscillation signature (phase pattern) can carry information about such processes to a greater degree than amplitud...
متن کاملDecomposing spatio-temporal seismicity patterns
Seismicity is a distributed process of great spatial and temporal variability and complexity. Efforts to characterise and describe the evolution of seismicity patterns have a long history. Today, the detection of changes in the spatial distribution of seismicity is still regarded as one of the most important approaches in monitoring and understanding seismicity. The problem of how to best descr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 1997
ISSN: 0094-8276
DOI: 10.1029/97gl53189