| Full text | |
| Author(s): |
Toledo, B. A.
[1, 2, 3]
;
Chian, A. C. -L.
[4, 5]
;
Rempel, E. L.
[1, 3]
;
Miranda, R. A.
[1, 6, 3, 7]
;
Munoz, P. R.
[1, 3]
;
Valdivia, J. A.
[2]
Total Authors: 6
|
| Affiliation: | [1] CTA ITA IEFM, WISER, BR-12228900 Sao Jose Dos Campos, SP - Brazil
[2] Univ Chile, Fac Ciencias, Dept Fis, Santiago - Chile
[3] Inst Aeronaut Technol, BR-12228900 Sao Jose Dos Campos, SP - Brazil
[4] CNRS, Observ Paris, LESIA, F-92190 Meudon - France
[5] WISER, BR-12227010 Sao Jose Dos Campos, SP - Brazil
[6] Inst Phys, Plasma Phys Lab, BR-70910900 Brasilia, DF - Brazil
[7] Univ Brasilia UnB, Fac Technol, BR-70910900 Brasilia, DF - Brazil
Total Affiliations: 7
|
| Document type: | Journal article |
| Source: | Physical Review E; v. 87, n. 2 FEB 28 2013. |
| Web of Science Citations: | 10 |
| Abstract | |
We study general multifractal properties of tidal gauge and long-wave time series which show a well defined transition between two states, as is the case of sea level when a tsunami arrives. We adopt a method based on discrete wavelets, called wavelet leaders, which has been successfully used in a wide range of applications from image analysis to biomedical signals. First, we analyze an empirical time series of tidal gauge from the tsunami event of 27 February 2010 in Chile. Then, we study a numerical solution of the driven-damped regularized long-wave equation (RLWE) which displays on-off intermittency. Both time series are characterized by a sudden change between two sharply distinct dynamical states. Our analysis suggests a correspondence between the pre- and post-tsunami states (ocean background) and the on state in the RLWE, and also between the tsunami state (disturbed ocean) and the off state in the RLWE. A qualitative similarity in their singularity spectra is observed, and since the RLWE is used to model shallow water dynamics, this result could imply an underlying dynamical similarity. DOI: 10.1103/PhysRevE.87.022821 (AU) | |
| FAPESP's process: | 11/10466-1 - Turbulence and coherent structures in astrophysical plasmas |
| Grantee: | Pablo Rubén Muñoz Gutberlet |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| FAPESP's process: | 11/50714-4 - Magnetic fielos and dynamos in space ano astrophysical plasmas |
| Grantee: | Erico Luiz Rempel |
| Support type: | Regular Research Grants |
| FAPESP's process: | 10/00214-2 - Turbulence and synchronization in astrophysical plasmas |
| Grantee: | Rodrigo Andres Miranda Cerda |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| FAPESP's process: | 10/09405-5 - Theory and observation of nonlinear dynamical systems: Application to ocean and earthquake |
| Grantee: | Benjamin Andres Toledo Cabrera |
| Support type: | Scholarships in Brazil - Post-Doctorate |