Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes
Seismic activity on mid-ocean ridges is often relatd to active tectonic, magmatic or hydrothermal processes. The investigation and localization of seismic activity on mid-ocean ridges is therefore an established geoscientific approach to better understand the active processes of crustal generation o...
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ftawi:oai:epic.awi.de:23681 2024-09-15T17:50:32+00:00 Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes Schmid, F. 2010 https://epic.awi.de/id/eprint/23681/ https://hdl.handle.net/10013/epic.37132 unknown Schmid, F. (2010) Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes , Bachelor thesis, University of Bremen, FB05. hdl:10013/epic.37132 EPIC3Bachelor thesis, University of Bremen, 42 p. Thesis notRev 2010 ftawi 2024-06-24T04:02:42Z Seismic activity on mid-ocean ridges is often relatd to active tectonic, magmatic or hydrothermal processes. The investigation and localization of seismic activity on mid-ocean ridges is therefore an established geoscientific approach to better understand the active processes of crustal generation on mid-oceanic ridges. In the summer 2007, during the AGAVE (Arctic Gakkel Vents Expedition) 12 seismometers were deployed for 4 days on drifting ice floes above the Arctic Gakkel Ridge around 8°E. The recorded seismic data contained 55 microearthquakes that could be localized in the survey area. The important sources of localization uncertainties are discussed and it was found that the accuracy of the localization results greatly depends on the quality of the seafloor batyhmetric data available. The localization results are geologically interpreted on the basis of seafloor topography. It was found that the seismicity is symmetrically distributed on both sides of the central rift valley and most of the events are originated in shallow source depths.The results of this study will complement the results of similiar projects, conducted at other segments of the Gakkel Ridge. Thesis Arctic Arctic Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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Seismic activity on mid-ocean ridges is often relatd to active tectonic, magmatic or hydrothermal processes. The investigation and localization of seismic activity on mid-ocean ridges is therefore an established geoscientific approach to better understand the active processes of crustal generation on mid-oceanic ridges. In the summer 2007, during the AGAVE (Arctic Gakkel Vents Expedition) 12 seismometers were deployed for 4 days on drifting ice floes above the Arctic Gakkel Ridge around 8°E. The recorded seismic data contained 55 microearthquakes that could be localized in the survey area. The important sources of localization uncertainties are discussed and it was found that the accuracy of the localization results greatly depends on the quality of the seafloor batyhmetric data available. The localization results are geologically interpreted on the basis of seafloor topography. It was found that the seismicity is symmetrically distributed on both sides of the central rift valley and most of the events are originated in shallow source depths.The results of this study will complement the results of similiar projects, conducted at other segments of the Gakkel Ridge. |
format |
Thesis |
author |
Schmid, F. |
spellingShingle |
Schmid, F. Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes |
author_facet |
Schmid, F. |
author_sort |
Schmid, F. |
title |
Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes |
title_short |
Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes |
title_full |
Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes |
title_fullStr |
Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes |
title_full_unstemmed |
Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes |
title_sort |
localization of microearthquakes recorded at 8°e on gakkel ridge, arctic ocean, by seismic arrays on drifting ice floes |
publishDate |
2010 |
url |
https://epic.awi.de/id/eprint/23681/ https://hdl.handle.net/10013/epic.37132 |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
EPIC3Bachelor thesis, University of Bremen, 42 p. |
op_relation |
Schmid, F. (2010) Localization of microearthquakes recorded at 8°E on Gakkel Ridge, Arctic Ocean, by seismic arrays on drifting ice floes , Bachelor thesis, University of Bremen, FB05. hdl:10013/epic.37132 |
_version_ |
1810292337479254016 |