EnvSeis project, Kåfjord

DOI

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. Waveform data is available from the GEOFON data centre, under network code 8I.

Identifier
DOI https://doi.org/10.14470/3V875927
Related Identifier HasMetadata https://geofon.gfz.de/waveform/archive/response/8I/2023_2025
Related Identifier IsDescribedBy https://www.ngu.no/publikasjon/faren-fjellskred-fra-nordnesfjellet-i-lyngenfjorden-troms#:~:text=Norges%20geologiske%20unders%C3%B8kelse%20(NGU)%20har,skjer%20ved%20Nordnes%20i%20Lyngenfjorden.
Metadata Access http://doidb.wdc-terra.org/oaip/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:doidb.wdc-terra.org:8106
Provenance
Creator Hermanns, Reginald L. ORCID logo
Publisher GFZ Data Services
Contributor GFZ Helmholtz Centre for Geosciences; GEOFON Data Centre; geofon(at)gfz.de; Geophysical Instrument Pool Potsdam (GIPP); NVE, Norway, Birtavarre station (logistical support); Norwegian University of Science and Technology; Hermanns, Reginald L.; Larose, Eric; Missana, Amandine F.J.M.; Helmstetter, Agnès; Zelsmann, Marc; Langet, Nadège; Aslan, Gökhan; Dietze, Michael
Publication Year 2025
Funding Reference GFZ Helmholtz Centre for Geosciences https://ror.org/04z8jg394 ROR GIPP202305 https://gipp.gfz.de/projects/landing/202305 ; Community Research and Development Information Service https://ror.org/02nc61e46 ROR EnvSeis 101073148 https://cordis.europa.eu/project/id/101073148/de
Rights embargoed access; Creative Commons Attribution 4.0 International; https://vocabularies.coar-repositories.org/access_rights/c_f1cf/; https://creativecommons.org/licenses/by/4.0/legalcode
OpenAccess true
Contact geofon(at)gfz.de
Representation
Language English
Resource Type Seismic Network; Dataset
Format .mseed; XML
Size 495GB
Discipline Seismology
Spatial Coverage (20.300W, 69.400S, 21.000E, 69.600N); Norway