Please use this identifier to cite or link to this item:
Authors: Duka, B.* 
Peqini, K.* 
De Santis, A.* 
Pavón-Carrasco, F. J.* 
Title: Using ‘‘domino’’ model to study the secular variation of the geomagnetic dipolar moment
Journal: Physics of the Earth and Planetary Interiors 
Series/Report no.: /242(2015)
Publisher: Elsevier Science Limited
Issue Date: 14-Mar-2015
DOI: 10.1016/j.pepi.2015.03.001
Keywords: Geomagnetic reversal
Geomagentic excrusion
Domino model
Secular variation
Dipolar magnetic moment
Subject Classification04. Solid Earth::04.05. Geomagnetism::04.05.01. Dynamo theory 
Abstract: Aiming to understand the physical processes underneath the reversals events of geomagnetic field, different numerical models have been conceived. We considered here the so named ‘‘domino’’ model, an Ising–Heisenberg model of interacting magnetic macrospins aligned along a ring. This model was proposed by Mazaud and Laj (1989) and then applied by Mori et al. (2013) to study geomagnetic field reversals. The long series of the axial magnetic moment (dipolar moment or ‘‘magnetization’’) generated by the ‘‘domino’’ model are empirically studied by varying all model parameters. We present here some results which are slightly different from those given by Mori et al. (2013), and will provide our explanation on the presence of these differences. We also define the set of parameters that supply the longest mean time between reversals. Using this set of parameters, a large number of time series of axial magnetic moment are also generated. After de-noising the fluctuation of these time series and averaging them, we compared the resulting averaged series with the series of axial dipolar magnetic moment values supplied by CALS7k.2, and CALS10k.1b models, finding similar behavior for the all time series. In a similar way, we also compared the averaged 14,000 years long series of dipolar moment with the dipolar magnetic moment obtained by the model SHA.DIF.14k.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat Existing users please Login
Duka et al., 2015-Domino Model-PEPI.pdf1.39 MBAdobe PDF
Show full item record


checked on Feb 10, 2021

Page view(s) 20

checked on Jul 3, 2022

Download(s) 50

checked on Jul 3, 2022

Google ScholarTM