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                           <gml:endPosition/>
                        </gml:TimePeriod>
                     </gmd:extent>
                  </gmd:EX_TemporalExtent>
               </gmd:temporalElement>
            </gmd:EX_Extent>
         </gmd:extent>
         <gmd:extent>
            <gmd:EX_Extent>
               <gmd:geographicElement>
                  <gmd:EX_GeographicBoundingBox>
                     <gmd:westBoundLongitude>
                        <gco:Decimal>-10.08</gco:Decimal>
                     </gmd:westBoundLongitude>
                     <gmd:eastBoundLongitude>
                        <gco:Decimal>10.259</gco:Decimal>
                     </gmd:eastBoundLongitude>
                     <gmd:southBoundLatitude>
                        <gco:Decimal>40.087</gco:Decimal>
                     </gmd:southBoundLatitude>
                     <gmd:northBoundLatitude>
                        <gco:Decimal>51.55</gco:Decimal>
                     </gmd:northBoundLatitude>
                  </gmd:EX_GeographicBoundingBox>
               </gmd:geographicElement>
            </gmd:EX_Extent>
         </gmd:extent>
         <gmd:supplementalInformation>
            <gco:CharacterString>Maîtres d'ouvrage :
Lloyd’s (opérateur historique)

Maître d'œuvre :
Lloyd’s List Intelligente (LLI) 2012</gco:CharacterString>
         </gmd:supplementalInformation>
      </gmd:MD_DataIdentification>
  </gmd:identificationInfo>
  <gmd:contentInfo>
      <gmd:MD_CoverageDescription>
         <gmd:attributeDescription>
            <gco:RecordType/>
         </gmd:attributeDescription>
         <gmd:attributeGroup>
            <gmd:MD_AttributeGroup>
               <gmd:contentType>
                  <gmd:MD_CoverageContentTypeCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_CoverageContentTypeCode"
                                                  codeListValue=""/>
               </gmd:contentType>
            </gmd:MD_AttributeGroup>
         </gmd:attributeGroup>
      </gmd:MD_CoverageDescription>
  </gmd:contentInfo>
  <gmd:dataQualityInfo>
      <gmd:DQ_DataQuality>
         <gmd:scope>
            <gmd:DQ_Scope>
               <gmd:level>
                  <gmd:MD_ScopeCode codeListValue="dataset"
                                    codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_ScopeCode"/>
               </gmd:level>
            </gmd:DQ_Scope>
         </gmd:scope>
         <gmd:report>
            <gmd:DQ_AbsoluteExternalPositionalAccuracy>
               <gmd:evaluationProcedure/>
               <gmd:dateTime/>
               <gmd:result>
                  <gmd:DQ_ConformanceResult>
                     <gmd:specification>
                        <gmd:CI_Citation>
                           <gmd:title>
                              <gco:CharacterString>Inspire specifications</gco:CharacterString>
                           </gmd:title>
                           <gmd:date>
                              <gmd:CI_Date>
                                 <gmd:date>
                                    <gco:Date>2012-01-16</gco:Date>
                                 </gmd:date>
                                 <gmd:dateType>
                                    <gmd:CI_DateTypeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode"
                                                         codeListValue="creation">creation</gmd:CI_DateTypeCode>
                                 </gmd:dateType>
                              </gmd:CI_Date>
                           </gmd:date>
                        </gmd:CI_Citation>
                     </gmd:specification>
                     <gmd:explanation>
                        <gco:CharacterString>Non évalué</gco:CharacterString>
                     </gmd:explanation>
                     <gmd:pass>
                        <gco:Boolean>false</gco:Boolean>
                     </gmd:pass>
                  </gmd:DQ_ConformanceResult>
               </gmd:result>
            </gmd:DQ_AbsoluteExternalPositionalAccuracy>
         </gmd:report>
         <gmd:lineage>
            <gmd:LI_Lineage>
               <gmd:statement>
                  <gco:CharacterString>2004  : Achat par la Marine Nationale de la base 2003 (exploitation SHOM)
2012 : Possibilité d’intégration de l’AIS satellitaire


Les données sont basées sur les mouvements déclarés  par la Lloyd’ sur la base des recensements dans les ports. Depuis quelques années, ces données peuvent également intégrer les observations AIS terrestres et satellitaires. Elles ne sont pas exhaustives mais elles constituent la base de données la plus complète du trafic maritime mondiale et constitue la référence mondiale dans le domaine.

Nombre de points d'observation ou de mesure : ~2 000 000 de mouvements / années (ordre de grandeur 2003), 61 000 000 positions / jour (année 2012).

Initialement renseignée par la collecte de mouvements de navires affiliés à la Lloyd’s sur le terrain, les données récentes incluent les nouveaux systèmes d’observation AIS terrestre et par satellite (La Lloyds achète ces nouvelles données à des opérateurs commerciaux).

Base de données sous différents formats (en version courante MS-ACCESS)
Plusieurs dizaines de Giga  pour la base avec données observées (AIS) , 500 mega pour les données de mouvements uniquement.</gco:CharacterString>
               </gmd:statement>
               <gmd:processStep>
                  <gmd:LI_ProcessStep>
                     <gmd:description>
                        <gco:CharacterString>Type de données :
Trafic maritime

Paramètre observé ou mesuré :
Positions, vitesses et types de navire

Résolution du (ou des) paramètre :
Variable (de 100 mètres à 100 kilomètres)
Fréquence d'actualisation :
annuelle
Fréquence d'actualisation : 
annuelle

Fréquence d'observation : 
Variable</gco:CharacterString>
                     </gmd:description>
                  </gmd:LI_ProcessStep>
               </gmd:processStep>
               <gmd:processStep>
                  <gmd:LI_ProcessStep>
                     <gmd:description>
                        <gco:CharacterString>Plans d'échantillonnage :
En grappe</gco:CharacterString>
                     </gmd:description>
                  </gmd:LI_ProcessStep>
               </gmd:processStep>
               <gmd:processStep>
                  <gmd:LI_ProcessStep>
                     <gmd:description>
                        <gco:CharacterString>Dispositif(s) associé(s) :  SB-AIS (systèmes d’observation du trafic par AIS sattelitaire</gco:CharacterString>
                     </gmd:description>
                  </gmd:LI_ProcessStep>
               </gmd:processStep>
            </gmd:LI_Lineage>
         </gmd:lineage>
      </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
</gmd:MD_Metadata>