Data/hora: 01/06/2024 10:17:35

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Electromagnetic fields at the sea bottom induced by a line of immersed electric dipoles	
Autores: 	Sampaio,Edson E.S.	
Data: 	2011-09-01	
Ano: 	2011	
Palavras-chave: 	Dipoles; Electromagnetic energy; Induced fields; Sea.	
Resumo: 	The analysis of electromagnetic fields caused by alternate or transient electric currents flowing along a cable in sea water has several applications. It supports the interpretation of electromagnetic geophysical data and safety procedures against the threat of sea mines. The approach to the problem employs a magnetic vector potential in the frequency domain due to a pulse source electric dipole, and performs Laplace and Hankel transforms and integration along the cable, to describe the variation of the magnetic induction field due to an electric dipole of finite length. The result is applicable to shallow or deep sea water environments, adaptable to any transmitting current waveform and useful for wave-field separation. The prospects relate to a horizontal receiving coil at the sea bottom and simulate: a minesweeper campaign with a current source at the sea surface or a geophysical survey with a current source close to the sea floor. Therefore, the present analysis may serve: to define parameters in counter-sweeping of submarine mines; to map the conductivity of sediments under shallow waters for the prevention and control of contamination; and as a first approach in the characterization of offshore mineral and oil economic deposits.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000300007	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/S0001-37652011000300007	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.83 n.3 2011	
Fonte: 	info:eu-repo/semantics/openAccess