نتایج جستجو برای: timescales

تعداد نتایج: 10071  

2016
Chiara Maria Petrone Giuseppe Bugatti Eleonora Braschi Simone Tommasini

Constraining the timescales of pre-eruptive magmatic processes in active volcanic systems is paramount to understand magma chamber dynamics and the triggers for volcanic eruptions. Temporal information of magmatic processes is locked within the chemical zoning profiles of crystals but can be accessed by means of elemental diffusion chronometry. Mineral compositional zoning testifies to the occu...

2016
M. S. Wolf R. Badea J. Berezovsky

The core of a ferromagnetic vortex domain creates a strong, localized magnetic field, which can be manipulated on nanosecond timescales, providing a platform for addressing and controlling individual nitrogen-vacancy centre spins in diamond at room temperature, with nanometre-scale resolution. Here, we show that the ferromagnetic vortex can be driven into proximity with a nitrogen-vacancy defec...

2015
Todd L. Parsons Tim Rogers

We review the development and applications of a systematic framework for dimension reduction in stochastic dynamical systems that exhibit a separation of timescales. When a multidimensional stochastic dynamical system possesses quantities that are approximately conserved on short timescales, it is common to observe on long timescales that trajectories remain close to some lower-dimensional subs...

2008
Y. Wang

Using two climate-vegetation model simulations from the Fast Ocean Atmosphere Model (FOAM) and the Community Climate System Model (CCSM, version 2), we investigate vegetation-precipitation feedbacks across North Africa during the mid-Holocene. From mid-Holocene snapshot runs of FOAM and CCSM2, we detect a negative feedback at the annual timescale with our statistical analysis. Using the Monte-C...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Thomas Laepple Peter Huybers

The variability of sea surface temperatures (SSTs) at multidecadal and longer timescales is poorly constrained, primarily because instrumental records are short and proxy records are noisy. Through applying a new noise filtering technique to a global network of late Holocene SST proxies, we estimate SST variability between annual and millennial timescales. Filtered estimates of SST variability ...

Journal: :Philosophical Transactions of the Royal Society B: Biological Sciences 2017

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