Volume changes of Alpine sediment stores in a state of post-event disequilibrium and the implications for downstream hydrology and bed load transport

Morche, David; Schmidt, Karl‐Heinz; Sahling, Ingo; Herkommer, Martin; Kutschera, Johannes

doi:10.1080/00291950802095079

Cited by 26 publications

(28 citation statements)

References 17 publications

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“…The survey confirmed previous findings (Morche et al, 2008;Beylich et al, 2011;Kociuba, 2014;Beylich and Laute, 2015;Carrivick et al, 2013Carrivick et al, , 2015 on the activity of subcatchmentscale geomorphic processes (e.g. slope: mass wasting processes, solifluction, landslides, and debris flow, as well as valley processes modified by channel activity e.g.…”

Section: Accepted Manuscriptsupporting

confidence: 82%

Assessment of sediment sources throughout the proglacial area of a small Arctic catchment based on high-resolution digital elevation models

Kociuba

2017

Geomorphology

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Section: Accepted Manuscriptsupporting

confidence: 82%

Assessment of sediment sources throughout the proglacial area of a small Arctic catchment based on high-resolution digital elevation models

Kociuba

2017

Geomorphology

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“…After the integration of a scanning mechanism with lidar and an inertial measurements unit with GPS in the early 1990s, it has been possible to use first airborne laser scanning (ALS), then MLS data, in addition to static based terrestrial laser scanning (TLS), to improve the measurement and modeling of fluvial environments (e.g., [2][3][4][5][6][7][8][9][10][11][12]). High-resolution ALS provides detailed information on topographical features of fluvial environments that influence the river hydraulics, giving, therefore, the potential to improve existing hydraulic models (e.g., [13][14][15][16][17]).…”

Section: Introductionmentioning

confidence: 99%

Mapping Topography Changes and Elevation Accuracies Using a Mobile Laser Scanner

et al. 2011

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Laser measurements have been used in a fluvial context since 1984, but the change detection possibilities of mobile laser scanning (MLS) for riverine topography have been lacking. This paper demonstrates the capability of MLS in erosion change mapping on a test site located in a 58 km-long tributary of the River Tenojoki (Tana) in the sub-arctic. We used point bars and river banks as example cases, which were measured with the mobile laser scanner ROAMER mounted on a boat and on a cart. Static terrestrial laser scanner data were used as reference and we exploited a difference elevation model technique for describing erosion and deposition areas. The measurements were based on data acquisitions during the late summer in 2008 and 2009. The coefficient of determination (R 2 ) of 0.93 and a standard deviation of error 3.4 cm were obtained as metrics for change mapping based on MLS. The root mean square error (RMSE) of MLS-based digital elevation models (DEM) for non-vegetated point bars ranged between 2.3 and 7.6 cm after correction of the systematic error. For densely vegetated bank areas, the ground point determination was more difficult resulting in an RMSE between 15.7 and 28.4 cm. OPEN ACCESSRemote Sens. 2011, 3 588

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“…This condition may now change due to the large temporary sediment stores and greater availability of sediment that now exists in the valley. A higher sediment load is expected even during smaller floods (Morche et al 2007). The high-magnitude event shows that the fluvial system in high moun- Fig.…”

Section: Discussionmentioning

confidence: 99%

Hydrology and geomorphic effects of a high‐magnitude flood in an alpine river

Morche

Schmidt

Heckmann

et al. 2007

Geografiska Annaler: Series A, Physical Geography

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ABSTRACT. The catchment of the River Partnach, a torrent situated in a glacial valley in the Northern Calcareous Alps of Bavaria/Germany, was affected by a high-magnitude flood on 22/23 August 2005 with a peak discharge of more than 16 m 3 s -1 at the spring and about 50 m 3 s -1 at the catchment outlet. This flood was caused by a long period of intense rainfall with a maximum intensity of 230 mm per day. During this event, a landslide dam, which previously held a small lake, failed. The flood wave originating from the dam breach transported a large volume of sediment (more than 50 000 m 3 ) derived from bank erosion and the massive undercutting of a talus cone. This caused a fundamental transformation of the downstream channel system including the redistribution of large woody debris and channel switching. Using terrestrial survey and aerial photography, erosional and depositional consequences of the event were mapped, pre-and postevent surfaces were compared and the sediment budget of the event calculated for ten consecutive channel reaches downstream of the former lake. According to the calculations more than 100 000 tonnes of sediment were eroded, 75% of which was redeposited within the channel and the proximal floodplain. A previous large flood which occurred a few weeks prior to the August 2005 event had a significant effect on controlling the impact of this event.

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Volume changes of Alpine sediment stores in a state of post-event disequilibrium and the implications for downstream hydrology and bed load transport

Cited by 26 publications

References 17 publications

Assessment of sediment sources throughout the proglacial area of a small Arctic catchment based on high-resolution digital elevation models

Assessment of sediment sources throughout the proglacial area of a small Arctic catchment based on high-resolution digital elevation models

Mapping Topography Changes and Elevation Accuracies Using a Mobile Laser Scanner

Hydrology and geomorphic effects of a high‐magnitude flood in an alpine river

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