François Bourges , Alain Mangin , Dominique d'Hulst
{"title":"岩溶空洞大气动力学中的二氧化碳:以aven d’Orgnac为例(ardeche)","authors":"François Bourges , Alain Mangin , Dominique d'Hulst","doi":"10.1016/S1251-8050(01)01682-2","DOIUrl":null,"url":null,"abstract":"<div><p>A survey of CO<sub>2</sub> concentrations in the atmosphere of the Aven d'Orgnac shows that aerodynamic transfer can be a major process in karst system dynamics. The local meteorological conditions and the geometry of the cavity govern exchanges between the cave atmosphere and the exterior. Air enriched with biogenic CO<sub>2</sub> is transferred through the microfissural network by diphasic infiltration from soil to caves where it is continuously produced from rock walls. Analysis of the aerodynamic emptying of confined zones and direct flow measurement give a mean CO<sub>2</sub> production per surface unit of the cave rock wall.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 11","pages":"Pages 685-692"},"PeriodicalIF":0.0000,"publicationDate":"2001-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01682-2","citationCount":"65","resultStr":"{\"title\":\"Le gaz carbonique dans la dynamique de l'atmosphère des cavités karstiques : l'exemple de l'Aven d'Orgnac (Ardèche)\",\"authors\":\"François Bourges , Alain Mangin , Dominique d'Hulst\",\"doi\":\"10.1016/S1251-8050(01)01682-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A survey of CO<sub>2</sub> concentrations in the atmosphere of the Aven d'Orgnac shows that aerodynamic transfer can be a major process in karst system dynamics. The local meteorological conditions and the geometry of the cavity govern exchanges between the cave atmosphere and the exterior. Air enriched with biogenic CO<sub>2</sub> is transferred through the microfissural network by diphasic infiltration from soil to caves where it is continuously produced from rock walls. Analysis of the aerodynamic emptying of confined zones and direct flow measurement give a mean CO<sub>2</sub> production per surface unit of the cave rock wall.</p></div>\",\"PeriodicalId\":100301,\"journal\":{\"name\":\"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science\",\"volume\":\"333 11\",\"pages\":\"Pages 685-692\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-12-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01682-2\",\"citationCount\":\"65\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1251805001016822\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1251805001016822","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Le gaz carbonique dans la dynamique de l'atmosphère des cavités karstiques : l'exemple de l'Aven d'Orgnac (Ardèche)
A survey of CO2 concentrations in the atmosphere of the Aven d'Orgnac shows that aerodynamic transfer can be a major process in karst system dynamics. The local meteorological conditions and the geometry of the cavity govern exchanges between the cave atmosphere and the exterior. Air enriched with biogenic CO2 is transferred through the microfissural network by diphasic infiltration from soil to caves where it is continuously produced from rock walls. Analysis of the aerodynamic emptying of confined zones and direct flow measurement give a mean CO2 production per surface unit of the cave rock wall.
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