Combined Large-N Seismic Arrays and DAS Fiber Optic Cables across the Hengill Geothermal Field, Iceland

Anne Obermann; Pilar Sánchez-Pastor; Sin-Mei WuChristopher WollinAlan F. BairdMarius Paul IskenJohn ClintonBettina P. Goertz-AllmannTorsten DahmAndreas WuestefeldPeidong ShiFederica LanzaLea GygerSelina WetterVala Hj?rleifsdóttirNadege LangetBaldur BrynjarssonPhilippe JoussetStefan Wiemer

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Combined Large-N Seismic Arrays and DAS Fiber Optic Cables across the Hengill Geothermal Field, Iceland

机译：Combined Large-N Seismic Arrays and DAS Fiber Optic Cables across the Hengill Geothermal Field, Iceland

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From June to August 2021,we deployed a dense seismic nodal network across the Hengill geothermal area in southwest Iceland to image and characterize faults and high-temperature zones at high resolution. The nodal network comprised 498 geophone nodes spread across the northern Nesjavellir and southern Hverahlíe geothermal fields and was complemented by an existing permanent and temporary backbone seismic network of a total of 44 short-period and broadband stations. In addition, we recorded distributed acoustic sensing data along two fiber optic telecommunication cables near the Nesjavellir geothermal power plant with commercial interrogators. During the time of deployment, a vibroseis survey took place around the Nesjavellir power plant. Here,we describe the network and the recorded datasets. Furthermore,we showsome initial results that indicate a high data quality and highlight the potential of the seismic records for various follow up studies, such as high-resolution event location to delineate faults and body- and surface-wave tomographies to image the subsurface velocity structure in great detail.

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《Seismological research letters》 |2022年第5期|2498-2514|共17页
作者
Anne Obermann; Pilar Sánchez-Pastor; Sin-Mei WuChristopher WollinAlan F. BairdMarius Paul IskenJohn ClintonBettina P. Goertz-AllmannTorsten DahmAndreas WuestefeldPeidong ShiFederica LanzaLea GygerSelina WetterVala Hj?rleifsdóttirNadege LangetBaldur BrynjarssonPhilippe JoussetStefan Wiemer;
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作者单位

Swiss Seismological Service (SED), ETH Zurich, Zürich, Switzerland;

GFZ German Research Centre for Geosciences, Potsdam, Germany;

NORSAR, Kjeller, NorwayReykjavík Energy (OR), Reykjavík, Iceland;

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正文语种英语
中图分类地震学;
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Hengill; northern; deployment;

Combined Large-N Seismic Arrays and DAS Fiber Optic Cables across the Hengill Geothermal Field, Iceland

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