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 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 Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Kim, Doyeon [verfasserIn] Brown, Larry D Árnason, Knútur Águstsson, Kristján Blanck, Hanna

Format:	Artikel
Sprache:	Englisch

Erschienen:	2017

Rechteinformationen:	Nutzungsrecht: © 2017. The Authors.

Schlagwörter:	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

Übergeordnetes Werk:	Enthalten in: Journal of geophysical research / B - Washington, DC : Union, 1978, 122(2017), 7, Seite 5228-5242
Übergeordnetes Werk:	volume:122 ; year:2017 ; number:7 ; pages:5228-5242

Links:	Volltext Link aufrufen Link aufrufen

DOI / URN:	10.1002/2016JB013809

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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856	4	1	\|u http://dx.doi.org/10.1002/2016JB013809 \|3 Volltext
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allfields	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
spelling	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
allfields_unstemmed	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
allfieldsGer	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
allfieldsSound	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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source	Enthalten in Journal of geophysical research / B 122(2017), 7, Seite 5228-5242 volume:122 year:2017 number:7 pages:5228-5242
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topic_facet	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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author	Kim, Doyeon
spellingShingle	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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topic_title	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
topic	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
topic_unstemmed	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
topic_browse	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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title	Magma reflection imaging in Krafla, Iceland, using microearthquake sources
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title_full	Magma reflection imaging in Krafla, Iceland, using microearthquake sources
author_sort	Kim, Doyeon
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title_sort	magma reflection imaging in krafla, iceland, using microearthquake sources
title_auth	Magma reflection imaging in Krafla, Iceland, using microearthquake sources
abstract	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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container_issue	7
title_short	Magma reflection imaging in Krafla, Iceland, using microearthquake sources
url	http://dx.doi.org/10.1002/2016JB013809 http://onlinelibrary.wiley.com/doi/10.1002/2016JB013809/abstract https://search.proquest.com/docview/1928662570
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up_date	2024-07-03T23:49:35.770Z
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fullrecord_marcxml	<?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. 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