Catastrophic flood effects in alpine/foothill fluvial system (a case study from the Sudetes Mts, SW Poland)

Zieliński, Tomasz

doi:10.1016/s0169-555x(02)00362-8

Cited by 25 publications

(19 citation statements)

References 16 publications

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“…The geomorphic effects of floods are a frequent subject of research in fluvial geomorphology, hydraulic engineering, flood protection and risk management (Gilvear, 1999;Plate, 2002;Yin and Li, 2001;Zielinski, 2003;Magilligan et al, 1998;Cenderelli and Wohl, 2003b;Lapointe et al, 1998;Zimmermann and Church, 2001). Flood hazards Correspondence to: G. Krapesch (gerald.krapesch@boku.ac.at) substantially affect the morphology of river systems in a very short time period (Hooke, 2008;Neuhold et al, 2009;Miller, 1990).…”

Section: Introductionmentioning

confidence: 99%

Scale orientated analysis of river width changes due to extreme flood hazards

Krapesch

Hauer

Habersack

2011

Nat. Hazards Earth Syst. Sci.

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Abstract. This paper analyses the morphological effects of extreme floods (recurrence interval > 100 years) and examines which parameters best describe the width changes due to erosion based on 5 affected alpine gravel bed rivers in Austria. The research was based on vertical aerial photos of the rivers before and after extreme floods, hydrodynamic numerical models and cross sectional measurements supported by LiDAR data of the rivers. Average width ratios (width after/before the flood) were calculated and correlated with different hydraulic parameters (specific stream power, shear stress, flow area, specific discharge). Depending on the geomorphological boundary conditions of the different rivers, a mean width ratio between 1.12 (Lech River) and 3.45 (Trisanna River) was determined on the reach scale. The specific stream power (SSP) best predicted the mean width ratios of the rivers especially on the reach scale and sub reach scale. On the local scale more parameters have to be considered to define the "minimum morphological spatial demand of rivers", which is a crucial parameter for addressing and managing flood hazards and should be used in hazard zone plans and spatial planning.

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Section: Introductionmentioning

confidence: 99%

Scale orientated analysis of river width changes due to extreme flood hazards

Krapesch

Hauer

Habersack

2011

Nat. Hazards Earth Syst. Sci.

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“…The debris flow occurred as a result of great precipitation occurring in the Eastern Sudetes over the period 6 th -9 th July 1997. Regolith was redeposited on numerous slopes and valleys during this event (Zieliński, 2003).…”

Section: Times and Conditions Of Debris Flows And Avalanches Occurrinmentioning

confidence: 91%

Dendrochronological Records of Debris Flow and Avalanche Activity in a Mid-Mountain Forest Zone (Eastern Sudetes — Central Europe)

Malik

Owczarek

2009

Geochronometria

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Dendrochronological methods were used to determine the frequency of debris flow/avalanche events in a forest zone. A debris flow and avalanche track located in the Eastern Sudetes Mountains (Central Europe) was analysed. The length of the youngest debris flow/avalanche track is about 750 m. Three distinct sections of the debris flow can be identified along the longitudinal section: niche, gully and tongue. The dendrochronological study shows that trees started growing on the margins of the debris flow between 1908 and 1963. Hence, debris flow and/or avalanche events occurred on this slope at the turn of the 19 th and 20 th centuries. All trees collected from the tongue started growing between 1935 and 1964. However, a large debris flow event took place several years before, most probably during an extraordinary rainfall in June 1921. Following this event, several relatively large debris flows have occurred during the growing season, the strongest dendrochronologically confirmed events occurring in 1968, 1971-1972, 1991, 1997 and probably in 1977. Spring debris flow events induced by snow melt and/or avalanches have occurred in 1994 and 2004. The results suggest that with favourable geological conditions, debris flows can occur very frequently within entirely forested slopes.

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“…The ma jor ity of data on mod ern flood de pos its is de rived from post-flood sur veys; for in stance, sur veys in the Sudety moun tains in Po land (Teisseyre, 1985(Teisseyre, , 1988Zieliñski, 2001Zieliñski, , 2003, the Parsêta River val ley in Po land (Zwoliñski, 1985(Zwoliñski, , 1992, the river val leys in Ja pan (Iseya, 1989), the Rhine and Meuse River val leys in the Neth er lands (Asselman and Middelkoop, 1995), the Tu ross River in Aus tra lia (Fer gu son and Brierley, 1999), the Dan ube River val ley in Slovakia (Lehotskú et al, 2010), the South Sas katch e wan River val ley in Can ada (Smith and Pérez-Arlucea, 2008;Smith et al, 2010) and the Mis sis sippi River val ley (e.g., Farrell, 1987;Gomez et al, 1997;Khan et al, 2013). These field in ves ti ga tions of floodplain sed imen ta tion are ac com pa nied by nu mer ous lab o ra tory ex per iments (e.g., Bathurst et al, 2002;Fraselle et al, 2010) and numer i cal mod el ling (e.g., Marriott, 1992).…”

Section: Introductionmentioning

confidence: 99%

Sedimentary records of 2010 and 2011 Warta River seasonal floods in the region of Poznań, Poland

Skolasińska¹,

Szczuciński²,

Mitręga³

et al. 2014

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The Warta River near Poznañ (West Po land) rep re sents a me an der ing low land river mod i fied by hy dro-en gi neer ing pro jects. Re cently, two large floods oc curred dur ing the sum mer of 2010 and the win ter of 2011. Rapid re sponse sur veys were conducted to doc u ment ero sion and sed i men tary re cords of the floods (spa tial ex tent, grain size, com po si tion, grain microtextures). Fol low-up stud ies, which were con ducted dur ing the two years af ter the floods, as sessed postdepositional changes in the flood de pos its. A thick sand layer formed that ranged from an av er age of 10-15 cm (sum mer) to 30-35 cm (win ter), build ing nat u ral lev ees, side bars and cre vasse splays. The sand lay ers con sisted of fine-and me dium-grained sands that were well-sorted, fine skewed and sourced from the river chan nel. The lon ger but smaller win ter flood pro duced thicker and coarser de pos its at dif fer ent sites com pared with the sum mer flood. An or ganic-rich mud layer and al gal mats, which were short-ex ist ing, were also de tected on the floodplain. The study proved that the flood re cord on en gi neered rivers may be only in the sand bod ies near the river chan nel and their pres er va tion is mainly con trolled by their thick ness. A sin gle site may not re cord all floods, as par tic u lar events tend to leave de pos its in var i ous places.

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Catastrophic flood effects in alpine/foothill fluvial system (a case study from the Sudetes Mts, SW Poland)

Cited by 25 publications

References 16 publications

Scale orientated analysis of river width changes due to extreme flood hazards

Scale orientated analysis of river width changes due to extreme flood hazards

Dendrochronological Records of Debris Flow and Avalanche Activity in a Mid-Mountain Forest Zone (Eastern Sudetes — Central Europe)

Sedimentary records of 2010 and 2011 Warta River seasonal floods in the region of Poznań, Poland

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