Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2
During the Polarstern cruise ARK XXIII/2 from 04/07/08 to 10/08/08 three seismometer arrays each including three stations with three-component broadband sensors were deployed on seaice above the southernmost part of Lena Trough (80.5 N, 1.5 W), where the transition to the Spitsbergen Fracture Zone o...
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ftawi:oai:epic.awi.de:21234 2024-09-15T18:04:20+00:00 Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2 Läderach, Christine Riedel, Carsten Korger, Edith Schlindwein, Vera 2009 https://epic.awi.de/id/eprint/21234/ https://hdl.handle.net/10013/epic.33554 unknown Läderach, C. , Riedel, C. , Korger, E. and Schlindwein, V. orcid:0000-0001-5570-2753 (2009) Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2 , 69th annual meeting of the German Geophysical Society, Kiel, Germany. . hdl:10013/epic.33554 EPIC369th annual meeting of the German Geophysical Society, Kiel, Germany. Conference notRev 2009 ftawi 2024-06-24T04:01:33Z During the Polarstern cruise ARK XXIII/2 from 04/07/08 to 10/08/08 three seismometer arrays each including three stations with three-component broadband sensors were deployed on seaice above the southernmost part of Lena Trough (80.5 N, 1.5 W), where the transition to the Spitsbergen Fracture Zone occurs. Lena Trough is the southern end of the Arctic mid-ocean ridge system and spreads passively with ultra-slow spreading rates between East Greenland and Spitsbergen/Yermak Plateau. Seismicity has been documented from the trough but has never been measured insitu before, because prevailing seaice prevents a simple installation of ocean bottom seismometers. Thus, the seismic stations were installed on top of pressure ice ridges where the ice is thick enough to support helicopter landings and were equipped with ARGOS transmitters to keep track of the stations while the seaice was drifting. After around 10 days of runtime the stations were recovered when flight conditions allowed it. During this time the ice had drifted nearly 100 km predominantly to the south and meltwater lakes on the ice extended dramatically. Data was registered on the vertical channel during 80 to 90% of the recording time, whereas horizontal channels failed during most of this period. The recorded data consists of events occurring within the ice sheet, but also more than 20 regional earthquakes could be registered. Conference Object East Greenland Greenland Ice Sheet Yermak plateau Spitsbergen 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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description |
During the Polarstern cruise ARK XXIII/2 from 04/07/08 to 10/08/08 three seismometer arrays each including three stations with three-component broadband sensors were deployed on seaice above the southernmost part of Lena Trough (80.5 N, 1.5 W), where the transition to the Spitsbergen Fracture Zone occurs. Lena Trough is the southern end of the Arctic mid-ocean ridge system and spreads passively with ultra-slow spreading rates between East Greenland and Spitsbergen/Yermak Plateau. Seismicity has been documented from the trough but has never been measured insitu before, because prevailing seaice prevents a simple installation of ocean bottom seismometers. Thus, the seismic stations were installed on top of pressure ice ridges where the ice is thick enough to support helicopter landings and were equipped with ARGOS transmitters to keep track of the stations while the seaice was drifting. After around 10 days of runtime the stations were recovered when flight conditions allowed it. During this time the ice had drifted nearly 100 km predominantly to the south and meltwater lakes on the ice extended dramatically. Data was registered on the vertical channel during 80 to 90% of the recording time, whereas horizontal channels failed during most of this period. The recorded data consists of events occurring within the ice sheet, but also more than 20 regional earthquakes could be registered. |
format |
Conference Object |
author |
Läderach, Christine Riedel, Carsten Korger, Edith Schlindwein, Vera |
spellingShingle |
Läderach, Christine Riedel, Carsten Korger, Edith Schlindwein, Vera Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2 |
author_facet |
Läderach, Christine Riedel, Carsten Korger, Edith Schlindwein, Vera |
author_sort |
Läderach, Christine |
title |
Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2 |
title_short |
Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2 |
title_full |
Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2 |
title_fullStr |
Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2 |
title_full_unstemmed |
Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2 |
title_sort |
preliminary results from the seismic array setup above lena trough during polarstern cruise ark xxiii/2 |
publishDate |
2009 |
url |
https://epic.awi.de/id/eprint/21234/ https://hdl.handle.net/10013/epic.33554 |
genre |
East Greenland Greenland Ice Sheet Yermak plateau Spitsbergen |
genre_facet |
East Greenland Greenland Ice Sheet Yermak plateau Spitsbergen |
op_source |
EPIC369th annual meeting of the German Geophysical Society, Kiel, Germany. |
op_relation |
Läderach, C. , Riedel, C. , Korger, E. and Schlindwein, V. orcid:0000-0001-5570-2753 (2009) Preliminary results from the seismic array setup above Lena Trough during Polarstern cruise ARK XXIII/2 , 69th annual meeting of the German Geophysical Society, Kiel, Germany. . hdl:10013/epic.33554 |
_version_ |
1810441834316431360 |