Anatomy of an Alpine Bedload Transport Event: A Watershed-Scale Seismic-Network Perspective

被引:8
作者
Antoniazza, Gilles [1 ,2 ]
Dietze, Michael [3 ,4 ]
Mancini, Davide [1 ]
Turowski, Jens M. [3 ]
Rickenmann, Dieter [2 ]
Nicollier, Tobias [2 ]
Boss, Stefan [2 ]
Lane, Stuart N. [1 ]
机构
[1] Univ Lausanne, Inst Earth Surface Dynam IDYST, Lausanne, Switzerland
[2] Swiss Fed Res Inst WSL, Mt Hydrol & Mass Movements, Birmensdorf, Switzerland
[3] German Res Ctr Geosci GFZ, Sect 4 6 Geomorphol, Potsdam, Germany
[4] Georg August Univ Gottingen, Fac Geosci & Geog, Gottingen, Germany
基金
瑞士国家科学基金会;
关键词
bedload transport; environmental seismology; Swiss plate geophone system (SPG); coarse material flux; Alpine watershed; BED-LOAD TRANSPORT; LABORATORY FLUME EXPERIMENTS; DEBRIS-FLOW; SEDIMENT TRANSPORT; RIVER; SYSTEM; EROSION; FLOODS; CONNECTIVITY; CALIBRATION;
D O I
10.1029/2022JF007000
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The way Alpine rivers mobilize, convey and store coarse material during high-magnitude events is poorly understood, notably because it is difficult to obtain measurements of bedload transport at the watershed scale. Seismic sensor data, evaluated with appropriate seismic physical models, can provide that missing link by yielding time-varying estimates of bedload transport albeit with non-negligible uncertainty. Low cost and ease of installation allow for networks of sensors to be deployed, providing continuous, watershed-scale insights into bedload transport dynamics. Here, we deploy a network of 24 seismic sensors to estimate coarse material fluxes in a 13.4 km(2) Alpine watershed during a high-magnitude transport event. First, we benchmark the seismic inversion routine with an independent time-series of bedload transport obtained with a calibrated acoustic system. Then, we apply the procedure to the other seismic sensors across the watershed. Propagation velocities derived from cross-correlation analysis between spatially consecutive bedload transport time-series were too high with respect to typical bedload transport velocity suggesting that a faster-moving water wave (re-)mobilizes local coarse material. Spatially distributed estimates of bedload transport reveal a relative inefficiency of Alpine watersheds in evacuating coarse material, even during a relatively infrequent high-magnitude bedload transport event. Significant inputs estimated for some tributaries were rapidly attenuated as the main river crossed less hydraulically efficient reaches. Only a small proportion of the total amount of material mobilized in the watershed was exported at the outlet. Multiple periods of competent flows are likely necessary to evacuate coarse material mobilized throughout the watershed during individual bedload transport events.
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页数:30
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共 133 条
[1]   Modelling of sediment supply from torrent catchments in the Western Alps using the sediment contributing area (SCA) approach [J].
Altmann, Moritz ;
Haas, Florian ;
Heckmann, Tobias ;
Liebault, Frederic ;
Becht, Michael .
EARTH SURFACE PROCESSES AND LANDFORMS, 2021, 46 (05) :889-906
[2]   Bedload transport: a walk between randomness and determinism. Part 2. Challenges and prospects [J].
Ancey, Christophe .
JOURNAL OF HYDRAULIC RESEARCH, 2020, 58 (01) :18-33
[3]   Bedload transport: a walk between randomness and determinism. Part 1. The state of the art [J].
Ancey, Christophe .
JOURNAL OF HYDRAULIC RESEARCH, 2020, 58 (01) :1-17
[4]   Hydrological Drivers of Bedload Transport in an Alpine Watershed [J].
Antoniazza, G. ;
Nicollier, T. ;
Boss, S. ;
Mettra, F. ;
Badoux, A. ;
Schaefli, B. ;
Rickenmann, D. ;
Lane, S. N. .
WATER RESOURCES RESEARCH, 2022, 58 (03)
[5]   Anatomy of an Alpine Bedload Transport Event: A Watershed-Scale Seismic-Network Perspective [J].
Antoniazza, Gilles ;
Dietze, Michael ;
Mancini, Davide ;
Turowski, Jens M. ;
Rickenmann, Dieter ;
Nicollier, Tobias ;
Boss, Stefan ;
Lane, Stuart N. .
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, 2023, 128 (08)
[6]   Sediment yield over glacial cycles: A conceptual model [J].
Antoniazza, Gilles ;
Lane, Stuart N. .
PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT, 2021, 45 (06) :842-865
[7]   Bedload Transport Monitoring in Alpine Rivers: Variability in Swiss Plate Geophone Response [J].
Antoniazza, Gilles ;
Nicollier, Tobias ;
Wyss, Carlos R. ;
Boss, Stefan ;
Rickenmann, Dieter .
SENSORS, 2020, 20 (15) :1-25
[8]   Revisiting the morphological method in two-dimensions to quantify bed-material transport in braided rivers [J].
Antoniazza, Gilles ;
Bakker, Maarten ;
Lane, Stuart N. .
EARTH SURFACE PROCESSES AND LANDFORMS, 2019, 44 (11) :2251-2267
[9]   Damage costs due to bedload transport processes in Switzerland [J].
Badoux, A. ;
Andres, N. ;
Turowski, J. M. .
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES, 2014, 14 (02) :279-294
[10]   Rainfall intensity-duration thresholds for bedload transport initiation in small Alpine watersheds [J].
Badoux, A. ;
Turowski, J. M. ;
Mao, L. ;
Mathys, N. ;
Rickenmann, D. .
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES, 2012, 12 (10) :3091-3108