Spatial Analysis of Coastal Chalk Cliff Falls in Upper Normandy (France)
Identifieur interne : 000578 ( Main/Exploration ); précédent : 000577; suivant : 000579Spatial Analysis of Coastal Chalk Cliff Falls in Upper Normandy (France)
Auteurs : Pauline Letortu [France] ; Stéphane Costa [France] ; Emmanuel Bonnet [France] ; Robert Davidson [France]Source :
Descripteurs français
- Wicri :
- topic : Haute-Normandie.
English descriptors
Abstract
Coastal chalk cliffs in Upper Normandy (France) evolve through continuous erosion. From 2002 to 2009, ESTRAN organization (Scientific and Technical Space of Aquatic Resources and Navigation) conducted a weekly inventory of 331 cliff falls (location, volume, and dating) between Veules-les-Roses and Le Tréport (37.5 km). Many approaches have been performed on this database. Spatial approach has highlighted the Ailly Cape sector as the most sensitive to erosive dynamic. Temporal approach has underlined that winter has been the season most prone to erosion (in fallen volume as in number of falls), followed by autumn, spring. Summer has not been a season prone to cliff falls but falls could occur. Statistical approach has highlighted a main contrast between marine and sub-aerial weathering factors with a seasonal distribution. Marine factors have seemed predominant during winter (sub-aerial weathering agents remained but in lower proportion) whereas during summer, sub-aerial weathering factors have been predominant, ending in coastal cliff falls that have often been less numerous and less massive than in winter. Spatial analysis with the help of geomatic tools (spatial statistics, cartography...) has confirmed the cliff falls polarization and the distinctive behaviour of the Ailly Cape sector.
Url:
Affiliations:
- France
- Basse-Normandie, Haute-Normandie, Pays de la Loire, Région Bretagne, Région Normandie
- Angers, Brest, Caen, Le Havre, Nantes, Rennes, Rouen
- Université Rennes 2 Haute Bretagne, Université d'Angers, Université de Bretagne Occidentale, Université de Caen Basse-Normandie, Université de Nantes, Université de Rouen, Université du Havre, Université européenne de Bretagne
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Le document en format XML
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BP 13522 - 44035 Nantes cedex 1</addrLine><country key="FR"></country></address><ref type="url">http://www.univ-nantes.fr/</ref></desc></org></tutelle><tutelle active="#struct-300266" type="direct"><org type="institution" xml:id="struct-300266" status="INCOMING"><orgName>Université de Caen Basse-Normandie</orgName><desc><address><country key="FR"></country></address></desc></org></tutelle><tutelle active="#struct-300314" type="direct"><org type="institution" xml:id="struct-300314" status="VALID"><orgName>Université de Bretagne Occidentale</orgName><orgName type="acronym">UBO</orgName><desc><address><addrLine>3 Rue des Archives 29238 Brest</addrLine><country key="FR"></country></address></desc></org></tutelle><tutelle active="#struct-406201" type="direct"><org type="institution" xml:id="struct-406201" status="VALID"><orgName>Université Rennes 2</orgName><desc><address><addrLine>Place du recteur Henri Le Moal - CS 24307 - 35043 Rennes cedex</addrLine><country key="FR"></country></address><ref type="url">http://www.univ-rennes2.fr/</ref></desc></org></tutelle><tutelle name="UMR6554" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID"><idno type="ISNI">0000000122597504</idno><idno type="IdRef">02636817X</idno><orgName>Centre National de la Recherche Scientifique</orgName><orgName type="acronym">CNRS</orgName><date type="start">1939-10-19</date><desc><address><country key="FR"></country></address><ref type="url">http://www.cnrs.fr/</ref></desc></org></tutelle></tutelles></hal:affiliation><country>France</country><placeName><settlement type="city">Angers</settlement><region type="region" nuts="2">Pays de la Loire</region></placeName><orgName type="university">Université d'Angers</orgName><placeName><settlement type="city">Nantes</settlement><region type="region" nuts="2">Pays de la Loire</region></placeName><orgName type="university">Université de Nantes</orgName><placeName><settlement type="city">Caen</settlement><region type="region" nuts="2">Basse-Normandie</region></placeName><orgName type="university">Université de Caen Basse-Normandie</orgName><placeName><settlement type="city">Brest</settlement><region type="region" nuts="2">Région Bretagne</region></placeName><orgName type="university">Université de Bretagne Occidentale</orgName><orgName type="institution" wicri:auto="newGroup">Université européenne de Bretagne</orgName><placeName><settlement type="city">Rennes</settlement><region type="region" nuts="2">Région Bretagne</region></placeName><orgName type="university">Université Rennes 2 Haute Bretagne</orgName><orgName type="institution" wicri:auto="newGroup">Université européenne de Bretagne</orgName></affiliation></author></analytic></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>Cliff falls</term><term>Coastal erosion</term><term>Processes</term><term>Spatial analysis</term><term>Upper Normandy</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Haute-Normandie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Coastal chalk cliffs in Upper Normandy (France) evolve through continuous erosion. From 2002 to 2009, ESTRAN organization (Scientific and Technical Space of Aquatic Resources and Navigation) conducted a weekly inventory of 331 cliff falls (location, volume, and dating) between Veules-les-Roses and Le Tréport (37.5 km). Many approaches have been performed on this database. Spatial approach has highlighted the Ailly Cape sector as the most sensitive to erosive dynamic. Temporal approach has underlined that winter has been the season most prone to erosion (in fallen volume as in number of falls), followed by autumn, spring. Summer has not been a season prone to cliff falls but falls could occur. Statistical approach has highlighted a main contrast between marine and sub-aerial weathering factors with a seasonal distribution. Marine factors have seemed predominant during winter (sub-aerial weathering agents remained but in lower proportion) whereas during summer, sub-aerial weathering factors have been predominant, ending in coastal cliff falls that have often been less numerous and less massive than in winter. Spatial analysis with the help of geomatic tools (spatial statistics, cartography...) has confirmed the cliff falls polarization and the distinctive behaviour of the Ailly Cape sector.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Basse-Normandie</li><li>Haute-Normandie</li><li>Pays de la Loire</li><li>Région Bretagne</li><li>Région Normandie</li></region><settlement><li>Angers</li><li>Brest</li><li>Caen</li><li>Le Havre</li><li>Nantes</li><li>Rennes</li><li>Rouen</li></settlement><orgName><li>Université Rennes 2 Haute Bretagne</li><li>Université d'Angers</li><li>Université de Bretagne Occidentale</li><li>Université de Caen Basse-Normandie</li><li>Université de Nantes</li><li>Université de Rouen</li><li>Université du Havre</li><li>Université européenne de Bretagne</li></orgName></list><tree><country name="France"><region name="Pays de la Loire"><name sortKey="Letortu, Pauline" sort="Letortu, Pauline" uniqKey="Letortu P" first="Pauline" last="Letortu">Pauline Letortu</name></region><name sortKey="Bonnet, Emmanuel" sort="Bonnet, Emmanuel" uniqKey="Bonnet E" first="Emmanuel" last="Bonnet">Emmanuel Bonnet</name><name sortKey="Costa, Stephane" sort="Costa, Stephane" uniqKey="Costa S" first="Stéphane" last="Costa">Stéphane Costa</name><name sortKey="Davidson, Robert" sort="Davidson, Robert" uniqKey="Davidson R" first="Robert" last="Davidson">Robert Davidson</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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