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Emergence of a small world from local interactions: modeling acquaintance networks.
How do we make acquaintances? A simple observation from everyday experience is that often one of our acquaintances introduces us to one of his or her acquaintances. Such a simple triangle interactionExpand
Triggering cascades and statistical properties of aftershocks
[1] Applying a simple general procedure for identifying aftershocks, we investigate their statistical properties for a high-resolution earthquake catalog covering Southern California. We compare ourExpand
Networks of recurrent events, a theory of records, and an application to finding causal signatures in seismicity.
We propose a method to search for signs of causal structure in spatiotemporal data making minimal a priori assumptions about the underlying dynamics. To this end, we generalize the elementary conceptExpand
Scaling and universality in rock fracture.
We present a detailed statistical analysis of acoustic emission time series from laboratory rock fracture obtained from different experiments on different materials including acoustic emissionExpand
Are seismic waiting time distributions universal
We show that seismic waiting time distributions in California and Iceland have many features in common as, for example, a power-law decay with exponent alpha approximate to 1.1 for intermediate andExpand
High dose folic acid supplementation of rats alters synaptic transmission and seizure susceptibility in offspring
Maternal folic acid supplementation is essential to reduce the risk of neural tube defects. We hypothesize that high levels of folic acid throughout gestation may produce neural networks moreExpand
Analysis of the spatial distribution between successive earthquakes.
Spatial distances between subsequent earthquakes in southern California exhibit scale-free statistics, with a critical exponent delta approximately 0.6, as well as finite size scaling. The statisticsExpand
Breakdown of the Gutenberg-Richter relation for microearthquakes induced by hydraulic fracturing: influence of stratabound fractures
Hydraulic fracturing, a powerful completion technique used to enhance oil or gas production from impermeable strata, may trigger unintended earthquake activity. The primary basis for assessment ofExpand
Nontrivial decay of aftershock density with distance in Southern California
The decay of the aftershock density with distance plays an important role in the discussion of the dominant underlying cause of earthquake triggering. Here, we provide evidence that its form is moreExpand
Analysis of the spatial distribution between successive earthquakes.
Spatial distances between subsequent earthquakes in southern California exhibit scale-free statistics, with a critical exponent $\ensuremath{\delta}\ensuremath{\approx}0.6$, as well as finite sizeExpand
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