Magma reflection imaging in Krafla, Iceland, using microearthquake sources
The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of...
Ausführliche Beschreibung
Autor*in: |
Kim, Doyeon [verfasserIn] |
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Format: |
Artikel |
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Sprache: |
Englisch |
Erschienen: |
2017 |
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Rechteinformationen: |
Nutzungsrecht: © 2017. The Authors. |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Journal of geophysical research / B - Washington, DC : Union, 1978, 122(2017), 7, Seite 5228-5242 |
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Übergeordnetes Werk: |
volume:122 ; year:2017 ; number:7 ; pages:5228-5242 |
Links: |
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DOI / URN: |
10.1002/2016JB013809 |
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Katalog-ID: |
OLC1996104926 |
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520 | |a The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity | ||
540 | |a Nutzungsrecht: © 2017. The Authors. | ||
650 | 4 | |a reflection seismology | |
650 | 4 | |a interferometry | |
650 | 4 | |a microearthquake | |
650 | 4 | |a dense array | |
650 | 4 | |a magma | |
650 | 4 | |a Image resolution | |
650 | 4 | |a Geothermal | |
650 | 4 | |a Instrumentation | |
650 | 4 | |a Drill holes | |
650 | 4 | |a Drills | |
650 | 4 | |a Drilling | |
650 | 4 | |a Depth | |
650 | 4 | |a Boreholes | |
650 | 4 | |a Arrays | |
650 | 4 | |a Seismicity | |
650 | 4 | |a Evaluation | |
650 | 4 | |a Seismic analysis | |
650 | 4 | |a Hazards | |
650 | 4 | |a Volcanic activity | |
650 | 4 | |a Microearthquakes | |
650 | 4 | |a Seismic arrays | |
650 | 4 | |a Geology | |
650 | 4 | |a Geophysics | |
650 | 4 | |a Lava | |
650 | 4 | |a Interferometry | |
650 | 4 | |a Imaging | |
650 | 4 | |a Magma | |
650 | 4 | |a Data acquisition | |
650 | 4 | |a High resolution | |
650 | 4 | |a P waves | |
650 | 4 | |a Seismic surveys | |
650 | 4 | |a Clusters | |
650 | 4 | |a Oceanic crust | |
650 | 4 | |a Geochemistry | |
650 | 4 | |a Profiling | |
650 | 4 | |a Volcanoes | |
650 | 4 | |a Encounters | |
650 | 4 | |a Mid-ocean ridges | |
650 | 4 | |a Fluids | |
650 | 4 | |a Traveltime | |
650 | 4 | |a Imaging techniques | |
650 | 4 | |a Plumbing | |
650 | 4 | |a Energy | |
650 | 4 | |a Reflection | |
650 | 4 | |a Hazard assessment | |
700 | 1 | |a Brown, Larry D |4 oth | |
700 | 1 | |a Árnason, Knútur |4 oth | |
700 | 1 | |a Águstsson, Kristján |4 oth | |
700 | 1 | |a Blanck, Hanna |4 oth | |
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773 | 1 | 8 | |g volume:122 |g year:2017 |g number:7 |g pages:5228-5242 |
856 | 4 | 1 | |u http://dx.doi.org/10.1002/2016JB013809 |3 Volltext |
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10.1002/2016JB013809 doi PQ20170901 (DE-627)OLC1996104926 (DE-599)GBVOLC1996104926 (PRQ)p1015-6131c67b6f9fc2d4dfd16e8f5a13ee86f46197952bf6925823248ad1d49bed3b0 (KEY)0108436420170000122000705228magmareflectionimaginginkraflaicelandusingmicroear DE-627 ger DE-627 rakwb eng 550 DNB 38.70 bkl Kim, Doyeon verfasserin aut Magma reflection imaging in Krafla, Iceland, using microearthquake sources 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity Nutzungsrecht: © 2017. The Authors. reflection seismology interferometry microearthquake dense array magma Image resolution Geothermal Instrumentation Drill holes Drills Drilling Depth Boreholes Arrays Seismicity Evaluation Seismic analysis Hazards Volcanic activity Microearthquakes Seismic arrays Geology Geophysics Lava Interferometry Imaging Magma Data acquisition High resolution P waves Seismic surveys Clusters Oceanic crust Geochemistry Profiling Volcanoes Encounters Mid-ocean ridges Fluids Traveltime Imaging techniques Plumbing Energy Reflection Hazard assessment Brown, Larry D oth Árnason, Knútur oth Águstsson, Kristján oth Blanck, Hanna oth Enthalten in Journal of geophysical research / B Washington, DC : Union, 1978 122(2017), 7, Seite 5228-5242 (DE-627)129366382 (DE-600)161666-3 (DE-576)014740451 0148-0227 nnns volume:122 year:2017 number:7 pages:5228-5242 http://dx.doi.org/10.1002/2016JB013809 Volltext http://onlinelibrary.wiley.com/doi/10.1002/2016JB013809/abstract https://search.proquest.com/docview/1928662570 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_62 GBV_ILN_2027 GBV_ILN_2279 38.70 AVZ AR 122 2017 7 5228-5242 |
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10.1002/2016JB013809 doi PQ20170901 (DE-627)OLC1996104926 (DE-599)GBVOLC1996104926 (PRQ)p1015-6131c67b6f9fc2d4dfd16e8f5a13ee86f46197952bf6925823248ad1d49bed3b0 (KEY)0108436420170000122000705228magmareflectionimaginginkraflaicelandusingmicroear DE-627 ger DE-627 rakwb eng 550 DNB 38.70 bkl Kim, Doyeon verfasserin aut Magma reflection imaging in Krafla, Iceland, using microearthquake sources 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity Nutzungsrecht: © 2017. The Authors. reflection seismology interferometry microearthquake dense array magma Image resolution Geothermal Instrumentation Drill holes Drills Drilling Depth Boreholes Arrays Seismicity Evaluation Seismic analysis Hazards Volcanic activity Microearthquakes Seismic arrays Geology Geophysics Lava Interferometry Imaging Magma Data acquisition High resolution P waves Seismic surveys Clusters Oceanic crust Geochemistry Profiling Volcanoes Encounters Mid-ocean ridges Fluids Traveltime Imaging techniques Plumbing Energy Reflection Hazard assessment Brown, Larry D oth Árnason, Knútur oth Águstsson, Kristján oth Blanck, Hanna oth Enthalten in Journal of geophysical research / B Washington, DC : Union, 1978 122(2017), 7, Seite 5228-5242 (DE-627)129366382 (DE-600)161666-3 (DE-576)014740451 0148-0227 nnns volume:122 year:2017 number:7 pages:5228-5242 http://dx.doi.org/10.1002/2016JB013809 Volltext http://onlinelibrary.wiley.com/doi/10.1002/2016JB013809/abstract https://search.proquest.com/docview/1928662570 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_62 GBV_ILN_2027 GBV_ILN_2279 38.70 AVZ AR 122 2017 7 5228-5242 |
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10.1002/2016JB013809 doi PQ20170901 (DE-627)OLC1996104926 (DE-599)GBVOLC1996104926 (PRQ)p1015-6131c67b6f9fc2d4dfd16e8f5a13ee86f46197952bf6925823248ad1d49bed3b0 (KEY)0108436420170000122000705228magmareflectionimaginginkraflaicelandusingmicroear DE-627 ger DE-627 rakwb eng 550 DNB 38.70 bkl Kim, Doyeon verfasserin aut Magma reflection imaging in Krafla, Iceland, using microearthquake sources 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity Nutzungsrecht: © 2017. The Authors. reflection seismology interferometry microearthquake dense array magma Image resolution Geothermal Instrumentation Drill holes Drills Drilling Depth Boreholes Arrays Seismicity Evaluation Seismic analysis Hazards Volcanic activity Microearthquakes Seismic arrays Geology Geophysics Lava Interferometry Imaging Magma Data acquisition High resolution P waves Seismic surveys Clusters Oceanic crust Geochemistry Profiling Volcanoes Encounters Mid-ocean ridges Fluids Traveltime Imaging techniques Plumbing Energy Reflection Hazard assessment Brown, Larry D oth Árnason, Knútur oth Águstsson, Kristján oth Blanck, Hanna oth Enthalten in Journal of geophysical research / B Washington, DC : Union, 1978 122(2017), 7, Seite 5228-5242 (DE-627)129366382 (DE-600)161666-3 (DE-576)014740451 0148-0227 nnns volume:122 year:2017 number:7 pages:5228-5242 http://dx.doi.org/10.1002/2016JB013809 Volltext http://onlinelibrary.wiley.com/doi/10.1002/2016JB013809/abstract https://search.proquest.com/docview/1928662570 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_62 GBV_ILN_2027 GBV_ILN_2279 38.70 AVZ AR 122 2017 7 5228-5242 |
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10.1002/2016JB013809 doi PQ20170901 (DE-627)OLC1996104926 (DE-599)GBVOLC1996104926 (PRQ)p1015-6131c67b6f9fc2d4dfd16e8f5a13ee86f46197952bf6925823248ad1d49bed3b0 (KEY)0108436420170000122000705228magmareflectionimaginginkraflaicelandusingmicroear DE-627 ger DE-627 rakwb eng 550 DNB 38.70 bkl Kim, Doyeon verfasserin aut Magma reflection imaging in Krafla, Iceland, using microearthquake sources 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity Nutzungsrecht: © 2017. The Authors. reflection seismology interferometry microearthquake dense array magma Image resolution Geothermal Instrumentation Drill holes Drills Drilling Depth Boreholes Arrays Seismicity Evaluation Seismic analysis Hazards Volcanic activity Microearthquakes Seismic arrays Geology Geophysics Lava Interferometry Imaging Magma Data acquisition High resolution P waves Seismic surveys Clusters Oceanic crust Geochemistry Profiling Volcanoes Encounters Mid-ocean ridges Fluids Traveltime Imaging techniques Plumbing Energy Reflection Hazard assessment Brown, Larry D oth Árnason, Knútur oth Águstsson, Kristján oth Blanck, Hanna oth Enthalten in Journal of geophysical research / B Washington, DC : Union, 1978 122(2017), 7, Seite 5228-5242 (DE-627)129366382 (DE-600)161666-3 (DE-576)014740451 0148-0227 nnns volume:122 year:2017 number:7 pages:5228-5242 http://dx.doi.org/10.1002/2016JB013809 Volltext http://onlinelibrary.wiley.com/doi/10.1002/2016JB013809/abstract https://search.proquest.com/docview/1928662570 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_62 GBV_ILN_2027 GBV_ILN_2279 38.70 AVZ AR 122 2017 7 5228-5242 |
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10.1002/2016JB013809 doi PQ20170901 (DE-627)OLC1996104926 (DE-599)GBVOLC1996104926 (PRQ)p1015-6131c67b6f9fc2d4dfd16e8f5a13ee86f46197952bf6925823248ad1d49bed3b0 (KEY)0108436420170000122000705228magmareflectionimaginginkraflaicelandusingmicroear DE-627 ger DE-627 rakwb eng 550 DNB 38.70 bkl Kim, Doyeon verfasserin aut Magma reflection imaging in Krafla, Iceland, using microearthquake sources 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity Nutzungsrecht: © 2017. The Authors. reflection seismology interferometry microearthquake dense array magma Image resolution Geothermal Instrumentation Drill holes Drills Drilling Depth Boreholes Arrays Seismicity Evaluation Seismic analysis Hazards Volcanic activity Microearthquakes Seismic arrays Geology Geophysics Lava Interferometry Imaging Magma Data acquisition High resolution P waves Seismic surveys Clusters Oceanic crust Geochemistry Profiling Volcanoes Encounters Mid-ocean ridges Fluids Traveltime Imaging techniques Plumbing Energy Reflection Hazard assessment Brown, Larry D oth Árnason, Knútur oth Águstsson, Kristján oth Blanck, Hanna oth Enthalten in Journal of geophysical research / B Washington, DC : Union, 1978 122(2017), 7, Seite 5228-5242 (DE-627)129366382 (DE-600)161666-3 (DE-576)014740451 0148-0227 nnns volume:122 year:2017 number:7 pages:5228-5242 http://dx.doi.org/10.1002/2016JB013809 Volltext http://onlinelibrary.wiley.com/doi/10.1002/2016JB013809/abstract https://search.proquest.com/docview/1928662570 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_62 GBV_ILN_2027 GBV_ILN_2279 38.70 AVZ AR 122 2017 7 5228-5242 |
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Kim, Doyeon |
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Kim, Doyeon ddc 550 bkl 38.70 misc reflection seismology misc interferometry misc microearthquake misc dense array misc magma misc Image resolution misc Geothermal misc Instrumentation misc Drill holes misc Drills misc Drilling misc Depth misc Boreholes misc Arrays misc Seismicity misc Evaluation misc Seismic analysis misc Hazards misc Volcanic activity misc Microearthquakes misc Seismic arrays misc Geology misc Geophysics misc Lava misc Interferometry misc Imaging misc Magma misc Data acquisition misc High resolution misc P waves misc Seismic surveys misc Clusters misc Oceanic crust misc Geochemistry misc Profiling misc Volcanoes misc Encounters misc Mid-ocean ridges misc Fluids misc Traveltime misc Imaging techniques misc Plumbing misc Energy misc Reflection misc Hazard assessment Magma reflection imaging in Krafla, Iceland, using microearthquake sources |
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550 DNB 38.70 bkl Magma reflection imaging in Krafla, Iceland, using microearthquake sources reflection seismology interferometry microearthquake dense array magma Image resolution Geothermal Instrumentation Drill holes Drills Drilling Depth Boreholes Arrays Seismicity Evaluation Seismic analysis Hazards Volcanic activity Microearthquakes Seismic arrays Geology Geophysics Lava Interferometry Imaging Magma Data acquisition High resolution P waves Seismic surveys Clusters Oceanic crust Geochemistry Profiling Volcanoes Encounters Mid-ocean ridges Fluids Traveltime Imaging techniques Plumbing Energy Reflection Hazard assessment |
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ddc 550 bkl 38.70 misc reflection seismology misc interferometry misc microearthquake misc dense array misc magma misc Image resolution misc Geothermal misc Instrumentation misc Drill holes misc Drills misc Drilling misc Depth misc Boreholes misc Arrays misc Seismicity misc Evaluation misc Seismic analysis misc Hazards misc Volcanic activity misc Microearthquakes misc Seismic arrays misc Geology misc Geophysics misc Lava misc Interferometry misc Imaging misc Magma misc Data acquisition misc High resolution misc P waves misc Seismic surveys misc Clusters misc Oceanic crust misc Geochemistry misc Profiling misc Volcanoes misc Encounters misc Mid-ocean ridges misc Fluids misc Traveltime misc Imaging techniques misc Plumbing misc Energy misc Reflection misc Hazard assessment |
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ddc 550 bkl 38.70 misc reflection seismology misc interferometry misc microearthquake misc dense array misc magma misc Image resolution misc Geothermal misc Instrumentation misc Drill holes misc Drills misc Drilling misc Depth misc Boreholes misc Arrays misc Seismicity misc Evaluation misc Seismic analysis misc Hazards misc Volcanic activity misc Microearthquakes misc Seismic arrays misc Geology misc Geophysics misc Lava misc Interferometry misc Imaging misc Magma misc Data acquisition misc High resolution misc P waves misc Seismic surveys misc Clusters misc Oceanic crust misc Geochemistry misc Profiling misc Volcanoes misc Encounters misc Mid-ocean ridges misc Fluids misc Traveltime misc Imaging techniques misc Plumbing misc Energy misc Reflection misc Hazard assessment |
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magma reflection imaging in krafla, iceland, using microearthquake sources |
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Magma reflection imaging in Krafla, Iceland, using microearthquake sources |
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The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity |
abstractGer |
The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity |
abstract_unstemmed |
The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity |
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Magma reflection imaging in Krafla, Iceland, using microearthquake sources |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a2200265 4500</leader><controlfield tag="001">OLC1996104926</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20220221191803.0</controlfield><controlfield tag="007">tu</controlfield><controlfield tag="008">170901s2017 xx ||||| 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1002/2016JB013809</subfield><subfield code="2">doi</subfield></datafield><datafield tag="028" ind1="5" ind2="2"><subfield code="a">PQ20170901</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)OLC1996104926</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)GBVOLC1996104926</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(PRQ)p1015-6131c67b6f9fc2d4dfd16e8f5a13ee86f46197952bf6925823248ad1d49bed3b0</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(KEY)0108436420170000122000705228magmareflectionimaginginkraflaicelandusingmicroear</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">550</subfield><subfield code="q">DNB</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">38.70</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Kim, Doyeon</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Magma reflection imaging in Krafla, Iceland, using microearthquake sources</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2017</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">ohne Hilfsmittel zu benutzen</subfield><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Band</subfield><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">The details of magma plumbing beneath active volcanoes remain a major challenge in geochemistry, geophysics, and volcanic hazard evaluation. Here we apply a relatively novel variation of seismic interferometry, which we call Virtual Reflection Seismic Profiling, to produce a high‐resolution image of a known crustal magma body. The technique takes advantage of recent advances in both seismic instrumentation (dense arrays) and seismic analysis (seismic interferometry). We have applied this technique to data recently acquired at an iconic volcanic system, Krafla, which lies on the mid‐Atlantic ridge as exposed in northern Iceland. What make this particular site exceptional are encounters with rhyolitic magma in two drill holes, K‐39 and Iceland Deep Drilling Project‐1 (IDDP‐1). These known magma bodies represent a unique calibration opportunity for surface geophysical measurements of magma distribution at depth. In this study, we produced a stacked, seismic reflection section by applying common depth point processing techniques to virtual shot gathers derived from interferometry of P waves from microearthquakes generated by tectonic, magmatic, and/or geothermal activity. We observe a strong, coherent reflection on the seismic section at a travel time corresponding to the depth at which magma was encountered in the IDDP‐1 wellbore. We interpret this reflection to be from magma or magma‐related fluids. Additional coherent reflections may correspond to other components of the magma plumbing beneath Krafla. These results represent a promising new technique for structural imaging with natural sources that can be applied to a wide array of geologic and energy problems that involve natural or induced seismic clusters. Demonstrates effective use of microearthquakes for reflection imaging with dense seismic arrays and seismic interferometry Reflections from an interface at the same depth as magma encountered in boreholes at Krafla, Iceland Method is applicable to a wide range of geologic and energy problems which involves natural or induced seismicity</subfield></datafield><datafield tag="540" ind1=" " ind2=" "><subfield code="a">Nutzungsrecht: © 2017. The Authors.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">reflection seismology</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">interferometry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">microearthquake</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">dense array</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">magma</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Image resolution</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Geothermal</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Instrumentation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Drill holes</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Drills</subfield></datafield><datafield tag="650" ind1=" " 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