Self-sufficient seismic boxes for monitoring glacier seismology
Glacier seismology is a valuable tool for investigating ice flow dynamics, but sufficient data acquisition in remote and exposed glaciated terrain remains challenging. For data acquisition on a highly crevassed and remote outlet glacier in Greenland we developed self-sufficient and easily deployabl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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McGill University
2023-01-01
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| Series: | Seismica |
| Subjects: | |
| Online Access: | https://seismica.library.mcgill.ca/article/view/245 |
| _version_ | 1797623010327265280 |
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| author | Ana Nap Fabian Walter Martin Lüthi Adrien Wehrlé |
| author_facet | Ana Nap Fabian Walter Martin Lüthi Adrien Wehrlé |
| author_sort | Ana Nap |
| collection | DOAJ |
| description |
Glacier seismology is a valuable tool for investigating ice flow dynamics, but sufficient data acquisition in remote and exposed glaciated terrain remains challenging. For data acquisition on a highly crevassed and remote outlet glacier in Greenland we developed self-sufficient and easily deployable seismic stations, "SG-boxes". The SG-boxes contain their own power supply via solar panel, a three-component omni-directional geophone and a GNSS receiver. The SG-boxes can be deployed and retrieved from a hovering helicopter, allowing for deployment in difficult terrain. To assess their performance we conducted a field test comparing the SG-boxes to established on-ice geophone installations at Gornergletscher in Switzerland. Moreover, data from a first SG-box deployment in Greenland were analyzed. The SG-boxes exhibit consistently higher noise levels relative to colocated conventional geophones and a correlation between noise levels, wind and air temperature is found. Despite their noise susceptibility, the SG-boxes detected a total of 13,114 Gornergletscher icequakes over 10 days, which is 30% of the total number of icequakes detected by conventional geophone stations. Hence, even in sub-optimal weather conditions and without additional noise reduction measures, the SG-boxes can provide unique and valuable data from challenging glaciated terrain where no conventional seismic installations are possible.
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| first_indexed | 2024-03-11T09:18:20Z |
| format | Article |
| id | doaj.art-db4498553cf54a05816c05e5b432cbb3 |
| institution | Directory Open Access Journal |
| issn | 2816-9387 |
| language | English |
| last_indexed | 2024-03-11T09:18:20Z |
| publishDate | 2023-01-01 |
| publisher | McGill University |
| record_format | Article |
| series | Seismica |
| spelling | doaj.art-db4498553cf54a05816c05e5b432cbb32023-11-16T18:31:12ZengMcGill UniversitySeismica2816-93872023-01-012110.26443/seismica.v2i1.245Self-sufficient seismic boxes for monitoring glacier seismologyAna Nap0Fabian Walter1Martin Lüthi2Adrien Wehrlé3University of ZürichSwiss Federal Institute WSLUniversity of ZürichUniversity of Zürich Glacier seismology is a valuable tool for investigating ice flow dynamics, but sufficient data acquisition in remote and exposed glaciated terrain remains challenging. For data acquisition on a highly crevassed and remote outlet glacier in Greenland we developed self-sufficient and easily deployable seismic stations, "SG-boxes". The SG-boxes contain their own power supply via solar panel, a three-component omni-directional geophone and a GNSS receiver. The SG-boxes can be deployed and retrieved from a hovering helicopter, allowing for deployment in difficult terrain. To assess their performance we conducted a field test comparing the SG-boxes to established on-ice geophone installations at Gornergletscher in Switzerland. Moreover, data from a first SG-box deployment in Greenland were analyzed. The SG-boxes exhibit consistently higher noise levels relative to colocated conventional geophones and a correlation between noise levels, wind and air temperature is found. Despite their noise susceptibility, the SG-boxes detected a total of 13,114 Gornergletscher icequakes over 10 days, which is 30% of the total number of icequakes detected by conventional geophone stations. Hence, even in sub-optimal weather conditions and without additional noise reduction measures, the SG-boxes can provide unique and valuable data from challenging glaciated terrain where no conventional seismic installations are possible. https://seismica.library.mcgill.ca/article/view/245Glaciologycryoseismologyseismologyinstumentation |
| spellingShingle | Ana Nap Fabian Walter Martin Lüthi Adrien Wehrlé Self-sufficient seismic boxes for monitoring glacier seismology Seismica Glaciology cryoseismology seismology instumentation |
| title | Self-sufficient seismic boxes for monitoring glacier seismology |
| title_full | Self-sufficient seismic boxes for monitoring glacier seismology |
| title_fullStr | Self-sufficient seismic boxes for monitoring glacier seismology |
| title_full_unstemmed | Self-sufficient seismic boxes for monitoring glacier seismology |
| title_short | Self-sufficient seismic boxes for monitoring glacier seismology |
| title_sort | self sufficient seismic boxes for monitoring glacier seismology |
| topic | Glaciology cryoseismology seismology instumentation |
| url | https://seismica.library.mcgill.ca/article/view/245 |
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