{"title":"机制的地震断层的地震区的17日和2000年6月21日sud-islandaise表面痕迹显示断层Á场就交通和l’Hestfjall","authors":"Françoise Bergerat, Jacques Angelier","doi":"10.1016/S1251-8050(01)01581-6","DOIUrl":null,"url":null,"abstract":"<div><p>Two major earthquakes (<em>M</em><sub>s</sub>=6.6) occurred on 17 and 21 June 2000 in the South Iceland Seismic Zone. This paper presents characteristic examples of surface traces of these seismic faults, called the Árnes and Hestfjall faults. The surface trace of the Árnes fault at Mykjunes shows a conjugate strike-slip pattern with a N30°E trending right-lateral fault and a N60°E trending left-lateral fault. Each of these faults is formed by ‘en-échelon’ arrays of fractures and push-ups. The surface trace of the Hestfjall fault near Bitra reveals a N50°–60°E trending left-lateral strike-slip fault including large open fractures, ‘en-échelon’ fractures and some push-ups. These observations show that the actual earthquake-related fault pattern is not restricted to the north–south-trending dextral strike-slip revealed by focal mechanisms and north–south alignment of aftershocks, but includes conjugate systems consistent with the structural pattern of the SISZ.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 1","pages":"Pages 35-44"},"PeriodicalIF":0.0000,"publicationDate":"2001-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01581-6","citationCount":"13","resultStr":"{\"title\":\"Mécanismes des failles des séismes des 17 et 21 juin 2000 dans la Zone sismique sud-islandaise, d'après les traces de surface des failles d'Árnes et de l'Hestfjall\",\"authors\":\"Françoise Bergerat, Jacques Angelier\",\"doi\":\"10.1016/S1251-8050(01)01581-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Two major earthquakes (<em>M</em><sub>s</sub>=6.6) occurred on 17 and 21 June 2000 in the South Iceland Seismic Zone. This paper presents characteristic examples of surface traces of these seismic faults, called the Árnes and Hestfjall faults. The surface trace of the Árnes fault at Mykjunes shows a conjugate strike-slip pattern with a N30°E trending right-lateral fault and a N60°E trending left-lateral fault. Each of these faults is formed by ‘en-échelon’ arrays of fractures and push-ups. The surface trace of the Hestfjall fault near Bitra reveals a N50°–60°E trending left-lateral strike-slip fault including large open fractures, ‘en-échelon’ fractures and some push-ups. These observations show that the actual earthquake-related fault pattern is not restricted to the north–south-trending dextral strike-slip revealed by focal mechanisms and north–south alignment of aftershocks, but includes conjugate systems consistent with the structural pattern of the SISZ.</p></div>\",\"PeriodicalId\":100301,\"journal\":{\"name\":\"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science\",\"volume\":\"333 1\",\"pages\":\"Pages 35-44\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-07-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01581-6\",\"citationCount\":\"13\",\"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/S1251805001015816\",\"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/S1251805001015816","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Mécanismes des failles des séismes des 17 et 21 juin 2000 dans la Zone sismique sud-islandaise, d'après les traces de surface des failles d'Árnes et de l'Hestfjall
Two major earthquakes (Ms=6.6) occurred on 17 and 21 June 2000 in the South Iceland Seismic Zone. This paper presents characteristic examples of surface traces of these seismic faults, called the Árnes and Hestfjall faults. The surface trace of the Árnes fault at Mykjunes shows a conjugate strike-slip pattern with a N30°E trending right-lateral fault and a N60°E trending left-lateral fault. Each of these faults is formed by ‘en-échelon’ arrays of fractures and push-ups. The surface trace of the Hestfjall fault near Bitra reveals a N50°–60°E trending left-lateral strike-slip fault including large open fractures, ‘en-échelon’ fractures and some push-ups. These observations show that the actual earthquake-related fault pattern is not restricted to the north–south-trending dextral strike-slip revealed by focal mechanisms and north–south alignment of aftershocks, but includes conjugate systems consistent with the structural pattern of the SISZ.
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