Seismic sensing of hydraulic and sediment transport patterns below frozen subarctic river

DOI

Our understanding of the effects of ice on channel morphodynamics and bedload transport in northern rivers, frozen for several months, are hindered by the difficulties of ‘seeing’ through the ice. We use continuous seismic records of a small network at the Sävar River in northern Sweden to interpret processes and quantify water and sediment fluxes. We apply a seismic inversion approach to determine seasonal differences in hydraulics and bedload sediment transport under ice-covered vs. open-channel flow conditions and provide a first-order estimation of sediment flux in that Fennoscandian river. Analysis of seismic signals of ice-cracking support our visual interpretation of ice break-up timing and the main ice break-up mechanism as thermal rather than mechanical. Waveform data are available from the GEOFON data centre, under network code 8E, and are available under CC-BY 4.0 license.

Identifier
DOI https://doi.org/10.14470/3R7563203557
Metadata Access http://doidb.wdc-terra.org/oaip/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:doidb.wdc-terra.org:6713
Provenance
Creator Dietze, Michael (Section 4.6 Geomorphology, German Research Centre for Geosciences GFZ Potsdam); Polvi, Lina (Department of Ecology and Environmental Science, Umeå University, Sweden)
Publisher GFZ Data Services
Contributor Section 4.6 Geomorphology, German Research Centre for Geosciences GFZ Potsdam; GEOFON Data Centre; geofon(at)gfz-potsdam.de; Deutsches GeoForschungsZentrum GFZ; Umea University, Department of Ecology and Environmental Science, Sweden; Lotsari, E.; Turowski, J.; Lind, L.
Publication Year 2019
Rights CC BY 4.0
OpenAccess true
Contact geofon(at)gfz-potsdam.de
Representation
Language English
Resource Type Seismic Network
Format SEED data
Size ~100G
Discipline Seismology
Spatial Coverage (20.300W, 64.100S, 20.400E, 64.200N)