Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas
Ice engineering projects often rely on the knowledge of ice thickness in shallow, brackish water like in the Baltic and Caspian Seas. By means of field data and model results, the paper shows that helicopter-borne electromagnetic induction measurements using frequencies of 3.68 and 112 kHz can yield...
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ftawi:oai:epic.awi.de:14872 2024-09-15T17:50:29+00:00 Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas Haas, Christian 2006 application/pdf https://epic.awi.de/id/eprint/14872/ https://epic.awi.de/id/eprint/14872/1/Haa2006b.pdf https://hdl.handle.net/10013/epic.25085 https://hdl.handle.net/10013/epic.25085.d001 unknown https://epic.awi.de/id/eprint/14872/1/Haa2006b.pdf https://hdl.handle.net/10013/epic.25085.d001 Haas, C. orcid:0000-0002-7674-3500 (2006) Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas , Proceedings of OMAE2006 25th International Conference on Offshore Mechanics and Arctic Engineering, June 4-9, 2006, Hamburg, Germany . hdl:10013/epic.25085 EPIC3Proceedings of OMAE2006 25th International Conference on Offshore Mechanics and Arctic Engineering, June 4-9, 2006, Hamburg, Germany, 6 p. Conference notRev 2006 ftawi 2024-06-24T03:58:50Z Ice engineering projects often rely on the knowledge of ice thickness in shallow, brackish water like in the Baltic and Caspian Seas. By means of field data and model results, the paper shows that helicopter-borne electromagnetic induction measurements using frequencies of 3.68 and 112 kHz can yield accurate thickness estimates with salinities as low as 3 ppt. The higher frequency yields the strongest EM signals. In addition, in shallow water the higher frequency is less sensitive to the sea floor signal, and can thus be used in water depths as shallow as 4-6 m, depending on flying altitude. Because the low frequency signal is very sensitive on shallow water depth, a combination of both signals will allow the retrieval of both ice thickness and water depth. Conference Object Arctic Sea ice 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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description |
Ice engineering projects often rely on the knowledge of ice thickness in shallow, brackish water like in the Baltic and Caspian Seas. By means of field data and model results, the paper shows that helicopter-borne electromagnetic induction measurements using frequencies of 3.68 and 112 kHz can yield accurate thickness estimates with salinities as low as 3 ppt. The higher frequency yields the strongest EM signals. In addition, in shallow water the higher frequency is less sensitive to the sea floor signal, and can thus be used in water depths as shallow as 4-6 m, depending on flying altitude. Because the low frequency signal is very sensitive on shallow water depth, a combination of both signals will allow the retrieval of both ice thickness and water depth. |
format |
Conference Object |
author |
Haas, Christian |
spellingShingle |
Haas, Christian Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas |
author_facet |
Haas, Christian |
author_sort |
Haas, Christian |
title |
Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas |
title_short |
Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas |
title_full |
Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas |
title_fullStr |
Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas |
title_full_unstemmed |
Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas |
title_sort |
airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the caspian and baltic seas |
publishDate |
2006 |
url |
https://epic.awi.de/id/eprint/14872/ https://epic.awi.de/id/eprint/14872/1/Haa2006b.pdf https://hdl.handle.net/10013/epic.25085 https://hdl.handle.net/10013/epic.25085.d001 |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
EPIC3Proceedings of OMAE2006 25th International Conference on Offshore Mechanics and Arctic Engineering, June 4-9, 2006, Hamburg, Germany, 6 p. |
op_relation |
https://epic.awi.de/id/eprint/14872/1/Haa2006b.pdf https://hdl.handle.net/10013/epic.25085.d001 Haas, C. orcid:0000-0002-7674-3500 (2006) Airborne electromagnetic sea ice thickness sounding in shallow, brackish water environments of the Caspian and Baltic Seas , Proceedings of OMAE2006 25th International Conference on Offshore Mechanics and Arctic Engineering, June 4-9, 2006, Hamburg, Germany . hdl:10013/epic.25085 |
_version_ |
1810292290941353984 |