The coast effect in terms of deviated electric currents: a numerical study
Identifieur interne : 000B70 ( Istex/Corpus ); précédent : 000B69; suivant : 000B71The coast effect in terms of deviated electric currents: a numerical study
Auteurs : M. Menvielle ; J. C. Rossignol ; P. TaritsSource :
- Physics of the Earth and Planetary Interiors [ 0031-9201 ] ; 1982.
Abstract
A numerical thin-sheet model is used to study the coast effect and to determine the magnitude of the near-surface part of the anomalous field. Theoretical induction arrows are computed for Australia, California, Japan and the British Isles and compared with the observed arrows. This comparison shows that the main part of the coast effect, and in some cases the whole coast effect, is due to the deviation of currents flowing in the ocean by the upper part of the resistive continents. It is suggested that the term ‘coast effect’ should refer to the anomalous field whose source is near-surface. The coast effect so defined behaves like a regional anomaly superimposed on other anomalous features of the transient geomagnetic field. A numerical determination of the geometrical features of the coast effect allows consideration of its elimination. This elimination is performed for California and Japan. A correlation between the resulting residual and heat-flow data is apparent in both cases.
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DOI: 10.1016/0031-9201(82)90077-2
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Menvielle</name><affiliation><mods:affiliation>Laboratoire de Géomagnétisme Interne, Institut de Physique du Globe de Paris, 4 Place Jussieu, Tour 14, 75230 Paris Cedex 05 France</mods:affiliation></affiliation></author><author><name sortKey="Rossignol, J C" sort="Rossignol, J C" uniqKey="Rossignol J" first="J. C." last="Rossignol">J. C. Rossignol</name><affiliation><mods:affiliation>Institut National d'Astrophysique et Geophysique, 77 Avenue Denfert Rochereau, 75014 Paris France</mods:affiliation></affiliation></author><author><name sortKey="Tarits, P" sort="Tarits, P" uniqKey="Tarits P" first="P." last="Tarits">P. Tarits</name><affiliation><mods:affiliation>Laboratoire de Géomagnétisme Interne, Institut de Physique du Globe de Paris, 4 Place Jussieu, Tour 14, 75230 Paris Cedex 05 France</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Physics of the Earth and Planetary Interiors</title><title level="j" type="abbrev">PEPI</title><idno type="ISSN">0031-9201</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1982">1982</date><biblScope unit="volume">28</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="118">118</biblScope><biblScope unit="page" to="128">128</biblScope></imprint><idno type="ISSN">0031-9201</idno></series><idno type="istex">C01FAC5CBB5CE4E7B1AB3B43116F8925E3B73C10</idno><idno type="DOI">10.1016/0031-9201(82)90077-2</idno><idno type="PII">0031-9201(82)90077-2</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0031-9201</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A numerical thin-sheet model is used to study the coast effect and to determine the magnitude of the near-surface part of the anomalous field. Theoretical induction arrows are computed for Australia, California, Japan and the British Isles and compared with the observed arrows. This comparison shows that the main part of the coast effect, and in some cases the whole coast effect, is due to the deviation of currents flowing in the ocean by the upper part of the resistive continents. It is suggested that the term ‘coast effect’ should refer to the anomalous field whose source is near-surface. The coast effect so defined behaves like a regional anomaly superimposed on other anomalous features of the transient geomagnetic field. A numerical determination of the geometrical features of the coast effect allows consideration of its elimination. This elimination is performed for California and Japan. A correlation between the resulting residual and heat-flow data is apparent in both cases.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>M. Menvielle</name><affiliations><json:string>Laboratoire de Géomagnétisme Interne, Institut de Physique du Globe de Paris, 4 Place Jussieu, Tour 14, 75230 Paris Cedex 05 France</json:string></affiliations></json:item><json:item><name>J.C. Rossignol</name><affiliations><json:string>Institut National d'Astrophysique et Geophysique, 77 Avenue Denfert Rochereau, 75014 Paris France</json:string></affiliations></json:item><json:item><name>P. Tarits</name><affiliations><json:string>Laboratoire de Géomagnétisme Interne, Institut de Physique du Globe de Paris, 4 Place Jussieu, Tour 14, 75230 Paris Cedex 05 France</json:string></affiliations></json:item></author><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>A numerical thin-sheet model is used to study the coast effect and to determine the magnitude of the near-surface part of the anomalous field. Theoretical induction arrows are computed for Australia, California, Japan and the British Isles and compared with the observed arrows. This comparison shows that the main part of the coast effect, and in some cases the whole coast effect, is due to the deviation of currents flowing in the ocean by the upper part of the resistive continents. It is suggested that the term ‘coast effect’ should refer to the anomalous field whose source is near-surface. The coast effect so defined behaves like a regional anomaly superimposed on other anomalous features of the transient geomagnetic field. A numerical determination of the geometrical features of the coast effect allows consideration of its elimination. This elimination is performed for California and Japan. 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Contribution No. 562.</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a">The coast effect in terms of deviated electric currents: a numerical study</title><author xml:id="author-1"><persName><forename type="first">M.</forename><surname>Menvielle</surname></persName><affiliation>Laboratoire de Géomagnétisme Interne, Institut de Physique du Globe de Paris, 4 Place Jussieu, Tour 14, 75230 Paris Cedex 05 France</affiliation></author><author xml:id="author-2"><persName><forename type="first">J.C.</forename><surname>Rossignol</surname></persName><affiliation>Institut National d'Astrophysique et Geophysique, 77 Avenue Denfert Rochereau, 75014 Paris France</affiliation></author><author xml:id="author-3"><persName><forename type="first">P.</forename><surname>Tarits</surname></persName><affiliation>Laboratoire de Géomagnétisme Interne, Institut de Physique du Globe de Paris, 4 Place Jussieu, Tour 14, 75230 Paris Cedex 05 France</affiliation></author></analytic><monogr><title level="j">Physics of the Earth and Planetary Interiors</title><title level="j" type="abbrev">PEPI</title><idno type="pISSN">0031-9201</idno><idno type="PII">S0031-9201(00)X0227-0</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1982"></date><biblScope unit="volume">28</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="118">118</biblScope><biblScope unit="page" to="128">128</biblScope></imprint></monogr><idno type="istex">C01FAC5CBB5CE4E7B1AB3B43116F8925E3B73C10</idno><idno type="DOI">10.1016/0031-9201(82)90077-2</idno><idno type="PII">0031-9201(82)90077-2</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1982</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>A numerical thin-sheet model is used to study the coast effect and to determine the magnitude of the near-surface part of the anomalous field. Theoretical induction arrows are computed for Australia, California, Japan and the British Isles and compared with the observed arrows. This comparison shows that the main part of the coast effect, and in some cases the whole coast effect, is due to the deviation of currents flowing in the ocean by the upper part of the resistive continents. It is suggested that the term ‘coast effect’ should refer to the anomalous field whose source is near-surface. The coast effect so defined behaves like a regional anomaly superimposed on other anomalous features of the transient geomagnetic field. A numerical determination of the geometrical features of the coast effect allows consideration of its elimination. This elimination is performed for California and Japan. A correlation between the resulting residual and heat-flow data is apparent in both cases.</p></abstract></profileDesc><revisionDesc><change when="1982">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/C01FAC5CBB5CE4E7B1AB3B43116F8925E3B73C10/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>PEPI</jid><aid>82900772</aid><ce:pii>0031-9201(82)90077-2</ce:pii><ce:doi>10.1016/0031-9201(82)90077-2</ce:doi><ce:copyright type="unknown" year="1982"></ce:copyright></item-info><head><ce:article-footnote><ce:label>☆</ce:label><ce:note-para>I.P.G.P. Contribution No. 562.</ce:note-para></ce:article-footnote><ce:title>The coast effect in terms of deviated electric currents: a numerical study</ce:title><ce:author-group><ce:author><ce:given-name>M.</ce:given-name><ce:surname>Menvielle</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.C.</ce:given-name><ce:surname>Rossignol</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>2</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>P.</ce:given-name><ce:surname>Tarits</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:affiliation id="AFF1"><ce:label>a</ce:label><ce:textfn>Laboratoire de Géomagnétisme Interne, Institut de Physique du Globe de Paris, 4 Place Jussieu, Tour 14, 75230 Paris Cedex 05 France</ce:textfn></ce:affiliation><ce:affiliation id="AFF2"><ce:label>b</ce:label><ce:textfn>Institut National d'Astrophysique et Geophysique, 77 Avenue Denfert Rochereau, 75014 Paris France</ce:textfn></ce:affiliation></ce:author-group><ce:date-received day="8" month="10" year="1981"></ce:date-received><ce:date-accepted day="2" month="12" year="1981"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>A numerical thin-sheet model is used to study the coast effect and to determine the magnitude of the near-surface part of the anomalous field. Theoretical induction arrows are computed for Australia, California, Japan and the British Isles and compared with the observed arrows. This comparison shows that the main part of the coast effect, and in some cases the whole coast effect, is due to the deviation of currents flowing in the ocean by the upper part of the resistive continents. It is suggested that the term ‘coast effect’ should refer to the anomalous field whose source is near-surface. The coast effect so defined behaves like a regional anomaly superimposed on other anomalous features of the transient geomagnetic field. A numerical determination of the geometrical features of the coast effect allows consideration of its elimination. This elimination is performed for California and Japan. A correlation between the resulting residual and heat-flow data is apparent in both cases.</ce:simple-para></ce:abstract-sec></ce:abstract></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>The coast effect in terms of deviated electric currents: a numerical study</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>The coast effect in terms of deviated electric currents: a numerical study</title></titleInfo><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Menvielle</namePart><affiliation>Laboratoire de Géomagnétisme Interne, Institut de Physique du Globe de Paris, 4 Place Jussieu, Tour 14, 75230 Paris Cedex 05 France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.C.</namePart><namePart type="family">Rossignol</namePart><affiliation>Institut National d'Astrophysique et Geophysique, 77 Avenue Denfert Rochereau, 75014 Paris France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.</namePart><namePart type="family">Tarits</namePart><affiliation>Laboratoire de Géomagnétisme Interne, Institut de Physique du Globe de Paris, 4 Place Jussieu, Tour 14, 75230 Paris Cedex 05 France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1982</dateIssued><copyrightDate encoding="w3cdtf">1982</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">A numerical thin-sheet model is used to study the coast effect and to determine the magnitude of the near-surface part of the anomalous field. Theoretical induction arrows are computed for Australia, California, Japan and the British Isles and compared with the observed arrows. This comparison shows that the main part of the coast effect, and in some cases the whole coast effect, is due to the deviation of currents flowing in the ocean by the upper part of the resistive continents. It is suggested that the term ‘coast effect’ should refer to the anomalous field whose source is near-surface. The coast effect so defined behaves like a regional anomaly superimposed on other anomalous features of the transient geomagnetic field. A numerical determination of the geometrical features of the coast effect allows consideration of its elimination. This elimination is performed for California and Japan. A correlation between the resulting residual and heat-flow data is apparent in both cases.</abstract><note>I.P.G.P. Contribution No. 562.</note><relatedItem type="host"><titleInfo><title>Physics of the Earth and Planetary Interiors</title></titleInfo><titleInfo type="abbreviated"><title>PEPI</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">198205</dateIssued></originInfo><identifier type="ISSN">0031-9201</identifier><identifier type="PII">S0031-9201(00)X0227-0</identifier><part><date>198205</date><detail type="volume"><number>28</number><caption>vol.</caption></detail><detail type="issue"><number>2</number><caption>no.</caption></detail><extent unit="issue pages"><start>93</start><end>184</end></extent><extent unit="pages"><start>118</start><end>128</end></extent></part></relatedItem><identifier type="istex">C01FAC5CBB5CE4E7B1AB3B43116F8925E3B73C10</identifier><identifier type="DOI">10.1016/0031-9201(82)90077-2</identifier><identifier type="PII">0031-9201(82)90077-2</identifier><recordInfo><recordContentSource>ELSEVIER</recordContentSource></recordInfo></mods></metadata></istex></record>Pour manipuler ce document sous Unix (Dilib)
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