منابع مشابه
Comment on 'Second-Order Statistical Structure of Geomagnetic Field Reversals'
In a recent paper, Naidu [1975] has proposed that thereversal intervals of the geomagnetic field for the period 0-76 m.y. are not independent. In fact, the author has fitted a firstorder autoregressive moving average model to the data published by Heirtzler e~ a/. [1968]. This conclusion, if true, is of importance because it suggests that the mechanism governing the reversals of the geomagnetic...
متن کاملClustering of polarity reversals of the geomagnetic field.
Often in nature the temporal distribution of inhomogeneous stochastic point processes can be modeled as a realization of renewal Poisson processes with a variable rate. Here we investigate one of the classical examples, namely, the temporal distribution of polarity reversals of the geomagnetic field. In spite of the commonly used underlying hypothesis, we show that this process strongly departs...
متن کاملPossible relationship between the Earth's rotation variations and geomagnetic field reversals over the past 510 Myr
The Earth’s rotation can change as a result of several internal and external processes, each of which is at a different timescale. Here, we present some possible connections between the Earth’s rotation variations and the geomagnetic reversal frequency rates over the past 120 Myr. In addition, we show the possible relationship between the geomagnetic field reversal frequency and the 18 δ O osci...
متن کاملSimulation of Geomagnetic Reversals Through Magnetic Critical Models
We use numerical simulations of a well-known phase-transition model to study reversals of the geomagnetic field. Each ring current in the geodynamo was supposed to behave as a magnetic spin while the magnetization of the model was supposed to be proportional to the Earth’s magnetic dipole. We have performed a sizedependence study of the calculated quantities. Power laws were obtained for the di...
متن کاملAn examination of simulated geomagnetic reversals from a palaeomagnetic perspective
Four magnetic polarity reversals that occurred during two numerical simulations of the Glatzmaier-Roberts geodynamo display a range of behaviour that resembles records of real reversals of the Earth's magnetic field in some ways, and suggests additional insights in others. Two reversals happened during the homogeneous sim? ulation, which prescribes spatially uniform heat flux at the core-mantle...
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: Journal of geomagnetism and geoelectricity
سال: 1974
ISSN: 0022-1392
DOI: 10.5636/jgg.26.101