Did the 1999 earthquake swarm on Gakkel Ridge open a volcanic conduit? A detailed teleseismic data analysis
International audience In 1999, a seismic swarm of 237 teleseismically recorded events marked a submarine eruption along the Arctic Gakkel Ridge, later on also analyzed by sonar, bathymetric, hydrothermal, and local seismic studies. We relocated the swarm with the global location algorithm HYPOSAT a...
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ftccsdartic:oai:HAL:hal-00537995v1 2024-02-11T10:01:23+01:00 Did the 1999 earthquake swarm on Gakkel Ridge open a volcanic conduit? A detailed teleseismic data analysis Riedel, Carsten Schlindwein, Vera Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association 2009-11-20 https://hal.science/hal-00537995 https://hal.science/hal-00537995/document https://hal.science/hal-00537995/file/PEER_stage2_10.1007%252Fs10950-009-9179-6.pdf https://doi.org/10.1007/s10950-009-9179-6 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s10950-009-9179-6 hal-00537995 https://hal.science/hal-00537995 https://hal.science/hal-00537995/document https://hal.science/hal-00537995/file/PEER_stage2_10.1007%252Fs10950-009-9179-6.pdf doi:10.1007/s10950-009-9179-6 info:eu-repo/semantics/OpenAccess ISSN: 1383-4649 EISSN: 1573-157X Journal of Seismology https://hal.science/hal-00537995 Journal of Seismology, 2009, 14 (3), pp.505-522. ⟨10.1007/s10950-009-9179-6⟩ Gakkel Ridge HYPOSAT Relocation Station residuals Spatiotemporal organization 1999 swarm Polar research Double difference Cross-correlation Magma ascent Oden volcano Ultraslow-spreading ridge info:eu-repo/semantics/article Journal articles 2009 ftccsdartic https://doi.org/10.1007/s10950-009-9179-6 2024-01-20T23:32:52Z International audience In 1999, a seismic swarm of 237 teleseismically recorded events marked a submarine eruption along the Arctic Gakkel Ridge, later on also analyzed by sonar, bathymetric, hydrothermal, and local seismic studies. We relocated the swarm with the global location algorithm HYPOSAT and analyzed the waveforms of the stations closest to the events by cross-correlation. We find event locations scattered around 85°35 N and 85° E at the southern rift wall and inside the rift valley of the Gakkel Ridge. Waveforms of three highly correlating events indicate a volumetric moment tensor component and highly precise referenced double-difference arrival times lead us to believe that they occur at the same geographical position and mark the conduit located further southeast close to a chain of recently imaged volcanic cones. This result is supported by station residual anomalies in the direction of the potential conduit. Seismicity is focused at the crust–mantle boundary at 16–20 km depth, but ascending toward the potential conduit during the beginning of April 1999, indicating an opening of the vent. Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Journal of Seismology 14 3 505 522 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Gakkel Ridge HYPOSAT Relocation Station residuals Spatiotemporal organization 1999 swarm Polar research Double difference Cross-correlation Magma ascent Oden volcano Ultraslow-spreading ridge |
spellingShingle |
Gakkel Ridge HYPOSAT Relocation Station residuals Spatiotemporal organization 1999 swarm Polar research Double difference Cross-correlation Magma ascent Oden volcano Ultraslow-spreading ridge Riedel, Carsten Schlindwein, Vera Did the 1999 earthquake swarm on Gakkel Ridge open a volcanic conduit? A detailed teleseismic data analysis |
topic_facet |
Gakkel Ridge HYPOSAT Relocation Station residuals Spatiotemporal organization 1999 swarm Polar research Double difference Cross-correlation Magma ascent Oden volcano Ultraslow-spreading ridge |
description |
International audience In 1999, a seismic swarm of 237 teleseismically recorded events marked a submarine eruption along the Arctic Gakkel Ridge, later on also analyzed by sonar, bathymetric, hydrothermal, and local seismic studies. We relocated the swarm with the global location algorithm HYPOSAT and analyzed the waveforms of the stations closest to the events by cross-correlation. We find event locations scattered around 85°35 N and 85° E at the southern rift wall and inside the rift valley of the Gakkel Ridge. Waveforms of three highly correlating events indicate a volumetric moment tensor component and highly precise referenced double-difference arrival times lead us to believe that they occur at the same geographical position and mark the conduit located further southeast close to a chain of recently imaged volcanic cones. This result is supported by station residual anomalies in the direction of the potential conduit. Seismicity is focused at the crust–mantle boundary at 16–20 km depth, but ascending toward the potential conduit during the beginning of April 1999, indicating an opening of the vent. |
author2 |
Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association |
format |
Article in Journal/Newspaper |
author |
Riedel, Carsten Schlindwein, Vera |
author_facet |
Riedel, Carsten Schlindwein, Vera |
author_sort |
Riedel, Carsten |
title |
Did the 1999 earthquake swarm on Gakkel Ridge open a volcanic conduit? A detailed teleseismic data analysis |
title_short |
Did the 1999 earthquake swarm on Gakkel Ridge open a volcanic conduit? A detailed teleseismic data analysis |
title_full |
Did the 1999 earthquake swarm on Gakkel Ridge open a volcanic conduit? A detailed teleseismic data analysis |
title_fullStr |
Did the 1999 earthquake swarm on Gakkel Ridge open a volcanic conduit? A detailed teleseismic data analysis |
title_full_unstemmed |
Did the 1999 earthquake swarm on Gakkel Ridge open a volcanic conduit? A detailed teleseismic data analysis |
title_sort |
did the 1999 earthquake swarm on gakkel ridge open a volcanic conduit? a detailed teleseismic data analysis |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-00537995 https://hal.science/hal-00537995/document https://hal.science/hal-00537995/file/PEER_stage2_10.1007%252Fs10950-009-9179-6.pdf https://doi.org/10.1007/s10950-009-9179-6 |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) |
geographic |
Arctic Gakkel Ridge |
geographic_facet |
Arctic Gakkel Ridge |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1383-4649 EISSN: 1573-157X Journal of Seismology https://hal.science/hal-00537995 Journal of Seismology, 2009, 14 (3), pp.505-522. ⟨10.1007/s10950-009-9179-6⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10950-009-9179-6 hal-00537995 https://hal.science/hal-00537995 https://hal.science/hal-00537995/document https://hal.science/hal-00537995/file/PEER_stage2_10.1007%252Fs10950-009-9179-6.pdf doi:10.1007/s10950-009-9179-6 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1007/s10950-009-9179-6 |
container_title |
Journal of Seismology |
container_volume |
14 |
container_issue |
3 |
container_start_page |
505 |
op_container_end_page |
522 |
_version_ |
1790597196841746432 |