Articles | Volume 23, issue 3
Research article
06 Mar 2023
Research article |  | 06 Mar 2023

Characterizing the evolution of mass flow properties and dynamics through analysis of seismic signals: insights from the 18 March 2007 Mt. Ruapehu lake-breakout lahar

Braden Walsh, Charline Lormand, Jon Procter, and Glyn Williams-Jones

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Cited articles

Anthony, R., Aster, R., Ryan, S., Rathburn, S., and Baker, M.: Measuring mountain river discharge using seismographs emplaced within the hyporheic zone, J. Geophys. Res.-Earth, 123, 210–228, 2018. 
Arattano, M. and Moia, F.: Monitoring the propagation of debris flow along a torrent, Hydrolog. Sci. J., 44, 811–823, 1999. 
Arattano, M. and Marchi, L.: Measurements of debris flow velocity through cross-correlation of instrumentation data, Nat. Hazards Earth Syst. Sci., 5, 137–142,, 2005. 
Arattano, M., Marchi, L., Genevios, R., Berti, M, Simoni, A., Tecca, P., and Bonte, M.: Field monitoring and real time management of debris flows, European Project “Debris Flow Risk” (N.ENV4960253), CNR-IRPI, Final Report, 30 pp., 1999. 
Barriere, J., Oth, A., Hostache, R., and Krein, A.: Bed load transport monitoring using seismic observations in a low-gradient rural gravel bed stream, Geophys. Res. Lett., 42, 2294–2301, 2015. 
Short summary
Here, we delve into the properties of a lake-breakout mass flow that grew up to a volume of ~ 4.4 × 106 m3 over the course of 83 km that occurred on 18 March 2007 at Mt. Ruapehu, Aotearoa / New Zealand. The combination of seismic analysis (frequency and directionality) with on-the-ground measurements (e.g., video, sediment concentration) shows how a lahar evolves over time and distance and how using seismic techniques can help monitor the ever-changing dynamics and properties of a flow event.
Final-revised paper