Curiosities and challenges of seismology on ice floes
Seismological studies on ultraslow-spreading mid-ocean ridges are not numerous due to the fact that the most prominent members of these ridges are located in polar regions. Investigations on Gakkel Ridge in the ice-covered Arctic Ocean and Lena Trough located in the Fram Strait between Greenland and...
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ftawi:oai:epic.awi.de:23776 2023-05-15T13:15:43+02:00 Curiosities and challenges of seismology on ice floes Läderach, Christine Schlindwein, Vera 2010 https://epic.awi.de/id/eprint/23776/ https://hdl.handle.net/10013/epic.36718 unknown Läderach, C. and Schlindwein, V. orcid:0000-0001-5570-2753 (2010) Curiosities and challenges of seismology on ice floes , European Seismological Commission 32nd General Assembly. . hdl:10013/epic.36718 EPIC3European Seismological Commission 32nd General Assembly. Conference notRev 2010 ftawi 2021-12-24T15:34:47Z Seismological studies on ultraslow-spreading mid-ocean ridges are not numerous due to the fact that the most prominent members of these ridges are located in polar regions. Investigations on Gakkel Ridge in the ice-covered Arctic Ocean and Lena Trough located in the Fram Strait between Greenland and Spitsbergen require special logistics and techniques. Above the latitude of 80°N ice floes endanger the deployment and recovery of ocean-bottom seismometers even during Arctic summer. DFG funded Emmy Noether group 'Mid-Ocean Volcanoes and Earthquakes' located at Alfred-Wegener Institute for Polar and Marine Research is carrying out seismological studies on arctic mid-ocean ridges and developed adequate techniques to record local seismicity in ice-covered oceans. We are using small-aperture seismic arrays equipped with Guralp broadband sensors which are deployed on drifting ice floes by helicopters operating from icebreakers such as RV Polarstern or RV Oden. Due to limited transport capacity and difficult weather conditions the station's weight and the ability to install them fast are important factors. The sensor needs to be isolated well against the strong solar radiation during the Arctic summer. An array consists of three to four single stations installed on one ice floe with a minimal diameter of one kilometer. During a time span of up to two weeks the stations are drifting several tens of kilometers according to local swell and wind direction and speed. The broadband sensors record a wide variety of signals, for which we identified different sources. Those can be colliding ice floes, helicopters or ice breaking ships, seismic blasts from the ship during seismic profiling, earthquakes within local, regional or even teleseismic distances and sometimes even curious wildlife. Conference Object Alfred Wegener Institute Arctic Arctic Ocean Fram Strait Greenland Spitsbergen Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Greenland |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Seismological studies on ultraslow-spreading mid-ocean ridges are not numerous due to the fact that the most prominent members of these ridges are located in polar regions. Investigations on Gakkel Ridge in the ice-covered Arctic Ocean and Lena Trough located in the Fram Strait between Greenland and Spitsbergen require special logistics and techniques. Above the latitude of 80°N ice floes endanger the deployment and recovery of ocean-bottom seismometers even during Arctic summer. DFG funded Emmy Noether group 'Mid-Ocean Volcanoes and Earthquakes' located at Alfred-Wegener Institute for Polar and Marine Research is carrying out seismological studies on arctic mid-ocean ridges and developed adequate techniques to record local seismicity in ice-covered oceans. We are using small-aperture seismic arrays equipped with Guralp broadband sensors which are deployed on drifting ice floes by helicopters operating from icebreakers such as RV Polarstern or RV Oden. Due to limited transport capacity and difficult weather conditions the station's weight and the ability to install them fast are important factors. The sensor needs to be isolated well against the strong solar radiation during the Arctic summer. An array consists of three to four single stations installed on one ice floe with a minimal diameter of one kilometer. During a time span of up to two weeks the stations are drifting several tens of kilometers according to local swell and wind direction and speed. The broadband sensors record a wide variety of signals, for which we identified different sources. Those can be colliding ice floes, helicopters or ice breaking ships, seismic blasts from the ship during seismic profiling, earthquakes within local, regional or even teleseismic distances and sometimes even curious wildlife. |
format |
Conference Object |
author |
Läderach, Christine Schlindwein, Vera |
spellingShingle |
Läderach, Christine Schlindwein, Vera Curiosities and challenges of seismology on ice floes |
author_facet |
Läderach, Christine Schlindwein, Vera |
author_sort |
Läderach, Christine |
title |
Curiosities and challenges of seismology on ice floes |
title_short |
Curiosities and challenges of seismology on ice floes |
title_full |
Curiosities and challenges of seismology on ice floes |
title_fullStr |
Curiosities and challenges of seismology on ice floes |
title_full_unstemmed |
Curiosities and challenges of seismology on ice floes |
title_sort |
curiosities and challenges of seismology on ice floes |
publishDate |
2010 |
url |
https://epic.awi.de/id/eprint/23776/ https://hdl.handle.net/10013/epic.36718 |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Gakkel Ridge Greenland |
geographic_facet |
Arctic Arctic Ocean Gakkel Ridge Greenland |
genre |
Alfred Wegener Institute Arctic Arctic Ocean Fram Strait Greenland Spitsbergen |
genre_facet |
Alfred Wegener Institute Arctic Arctic Ocean Fram Strait Greenland Spitsbergen |
op_source |
EPIC3European Seismological Commission 32nd General Assembly. |
op_relation |
Läderach, C. and Schlindwein, V. orcid:0000-0001-5570-2753 (2010) Curiosities and challenges of seismology on ice floes , European Seismological Commission 32nd General Assembly. . hdl:10013/epic.36718 |
_version_ |
1766270700998361088 |