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

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...

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Bibliographic Details
Main Authors: Dietze, Michael, Polvi, Lina
Format: Dataset
Language:English
Published: GFZ Data Services 2019
Subjects:
Monitoring system
Seismological stations
In Situ/Laboratory Instruments > Magnetic/Motion Sensors > Seismometers
In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS
EARTH SCIENCE > SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY
Geophysics
FOS: Earth and related environmental sciences
Passive seismic
Seismometers
Velocity
MiniSEED
Volcano
Temporary[g]
Fennoscandian
Northern Sweden
Subarctic
Online Access:https://dx.doi.org/10.14470/3r7563203557
https://geofon.gfz-potsdam.de/doi/network/8E/2018
Description
Summary: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. ...

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