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	<journal>
		<journal_title>Nonlinear Processes  in Geophysics</journal_title>
		<journal_url>www.nonlin-processes-geophys.net</journal_url>
		<issn>1023-5809</issn>
		<eissn>1607-7946</eissn>
		<volume_number>16</volume_number>
		<issue_number>2</issue_number>
		<publication_year>2009</publication_year>
	</journal>
	<doi>10.5194/npg-16-211-2009</doi>
	<article_url>http://www.nonlin-processes-geophys.net/16/211/2009/</article_url>
	<abstract_html>http://www.nonlin-processes-geophys.net/16/211/2009/npg-16-211-2009.html</abstract_html>
	<fulltext_pdf>http://www.nonlin-processes-geophys.net/16/211/2009/npg-16-211-2009.pdf</fulltext_pdf>
	<start_page>211</start_page>
	<end_page>217</end_page>
	<publication_date>2009-03-26</publication_date>
	<article_title content_type="html">Seismic entangled patterns analyzed via multiresolution decomposition</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>F. E. A. Leite</name>
		</author>
		<author numeration="2" affiliations="2">
			<name>R. Montagne</name>
			<email>montagne@df.ufrpe.br</email>
		</author>
		<author numeration="3" affiliations="3">
			<name>G. Corso</name>
		</author>
		<author numeration="4" affiliations="4">
			<name>L. S. Lucena</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">Departamento de Ciências Ambientais, Universidade Federal Rural do Semi-Árido, 59625-900, Mossoró, RN, Brazil</affiliation>
		<affiliation numeration="2" content_type="html">Departamento de Física, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros, s/n, 52171-900, Recife, PE, Brazil</affiliation>
		<affiliation numeration="3" content_type="html">Departamento de Biofísica e Farmacologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, 59078-972, Natal, RN, Brazil</affiliation>
		<affiliation numeration="4" content_type="html">Departamento de Física Teórica e Experimental, International Center for Complex Systems, Universidade Federal do Rio Grande do Norte, Campus Universitário, 59078-970, Natal, RN, Brazil</affiliation>
	</affiliations>
	<abstract content_type="html">This article explores a method for distinguishing entangled coherent
structures embedded in geophysical images. The original image is decomposed
in a series of j-scale-images using multiresolution decomposition. To improve
the image processing analysis each j-image is divided in l-spacial regions
generating set of (j, l)-regions. At each (j, l)-region we apply a
continuous wavelet transform to evaluate &lt;i&gt;E&lt;/i&gt;&lt;sub&gt;&amp;nu;&lt;/sub&gt;, the spectrum of energy.
&lt;i&gt;E&lt;/i&gt;&lt;sub&gt;&amp;nu;&lt;/sub&gt; has two maxima in the original data. Otherwise, at each scale &lt;i&gt;E&lt;/i&gt;&lt;sub&gt;&amp;nu;&lt;/sub&gt;
hast typically one peak. The localization of the peaks changes according to
the (j, l)-region. The intensity of the peaks is linked with the presence of
coherent structures, or patterns, at the respective (j, l)-region. The
method is successfully applied to distinguish, in scale and region, the
ground roll noise from the relevant geologic information in the signal.</abstract>
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</article>

