The 8I Seismic Network, 2023–2025
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restricted.
- Cite as:
- Reginald L. Hermanns (2025): EnvSeis project, Kåfjor. GFZ Data Services. Other/Seismic Network. doi:10.14470/3V875927.
- Network code:
- 8I
- Type:
- Temporary
- Network dates†:
- 2023-01-01 to 2025-12-31
- Data time range‡:
- 2023–2025
- Terms of use:
- Creative Commons Attribution 4.0 International
Embargoed
Available 2027-01-01.
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- Institution(s):
- NTNU, NGU, ISTerre-CNRS, CNRS, NORSAR, Uni Goettingen, GFZ
- Creator(s):
- Reginald L. Hermanns (LEGACY)
- Description*:
- EnvSeis project, Kåfjor
- Abstract:
- This network of sixteen geophones and six broadbands was installed in Kåfjord, Troms og Finnmark, Norway, to study two rockslides: Njárgavárri and Indre Nordneset. Each study site had three broadbands from September 2023 to June 2025. In addition, were installed and recording: September November 2023: six geophones on each site; April August 2024: four geophones at Njárgavárri and ten at Indre Nordneset. The geophones were installed locally around the rockslides while the broadbands were installed one to a few kilometers from the rockslides (except for one of them directly at Indre Nordneset). The geophones in Njárgavárri were first installed as two triangular antennas of four stations each (three in triangle and one in the middle) and were then replaced by a small aperture array around the most active part of the unstable slope. The goal was to record all activities: rock falls, cracking and creeping movements. In Indre Nordneset, the geophone stations were placed in a small aperture array all around the main scarp and surface of failure to record the cracking activity. The geophones are of type 3-D Geophone PE-6/B with DATA-CUBE3 (built-in GPS). The broadbands are of type STS-2.5 with EDR-10 digitizers. Sampling frequency was 400 Hz for geophone stations, 200 Hz broadbands. Gain was at 16 (15.258789 nV/count) for the geophone stations, set on high (100 nV/bit) for the broadband stations.
* Description is taken from seismic metadata, and may not match the preferred title for citations. - DataCite metadata:
- HTML | JSON | XML | INSPIRE
- Seismic metadata:
- fdsnws-station
- Network KML file:
Extended Network Information for network 8I [hide/show]
- Creator(s):
-
Hermanns, Reginald L.
a
- Title:
- EnvSeis project, Kåfjor
- Publisher:
- GFZ Data Services
- Resource Type:
- Other/Seismic Network
- Network DOI:
- doi:10.14470/3V875927
- Related Reference(s):
-
- Blikra, L. H.; Nordvik, T.; Henderson, I. (2009). Faren for fjellskred fra Nordnesfjellet i Lyngenfjorden, Troms. (NGU Rapport 2009.026). Geological Survey of Norway (NGU).
- Place(s):
- Norway
- Subject(s)a:
- creeping landslides ; rock fall ; rockslides
- GCMD keyword(s):
- Funding Reference(s):
- GFZ Helmholtz Centre for Geosciences (GIPP202305), Community Research and Development Information Service (EnvSeis 101073148)
Station List for Network Code 8I
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Station description
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Channels
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Database last updated at 2025 Mar 31 13:20:21
