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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Near- and far-field tsunamigenic effects on the Z component of the geomagnetic field during the Japanese event, 2011

Full text
Author(s):
Klausner, Virginia [1] ; Kherani, Esfhan A. [2] ; Muella, Marcio T. A. H. [1]
Total Authors: 3
Affiliation:
[1] Univ Vale Paraiba UNIVAP, Dept Phys & Astron, Sao Jose Dos Campos - Brazil
[2] Natl Inst Space Res, Sao Jose Dos Campos - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS; v. 121, n. 2, p. 1772-1779, FEB 2016.
Web of Science Citations: 4
Abstract

In this work, we examine the vertical component (Z) of the geomagnetic field observed by ground-based observatories during the tsunami event which happened on 11 March 2011. For this event, we have selected nine magnetic observatories distributed along the tsunami passage, covering up to 3000km epicentral distance. The traveltime diagram of the magnetic disturbances is constructed and compared with the simulated tsunami traveltime diagram. From this comparison, we identify the amplified magnetic disturbances appearing during the tsunami arrival in the vicinity of these observatories. Moreover, mean absolute percentage error map is constructed to examine the cross correlations among different observatories and the amplified disturbances are found to be highly correlated. These features suggest that the amplified disturbances are tsunamigenic in nature. These results are in confirmation with the previous near-field studies, and they shed new insight into the tsunamigenic magnetic disturbances on near- and far-field distances from the epicenter. (AU)

FAPESP's process: 13/06029-0 - Wavelet techniques applied to study of space electrodynamic phenomena
Grantee:Virginia Klausner de Oliveira
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 11/21903-3 - Traveling ionospheric disturbances: simulation and observation, the importance of latitudinal coupling of gravity wave-Perkins-Es layer instabilities and forcing from pre-seismic events
Grantee:Esfhan Alam Kherani
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 11/20588-7 - STUDY ON THE GEOMAGNETIC VARIATIONS USING WAVELET TECHNIQUES.
Grantee:Virginia Klausner de Oliveira
Support Opportunities: Scholarships in Brazil - Post-Doctoral