Trends and controls of Holocene floodplain sedimentation in the Rhine catchment

Hoffmann, Thomas; Erkens, Gilles; Gerlach, Renate; Klostermann, Josef; Lang, Andreas

doi:10.1016/j.catena.2008.09.002

Cited by 105 publications

(95 citation statements)

References 41 publications

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“…Understanding the respective roles of climate and land-use change on long-term ecosystem dynamics have become an important issue of palaeo-studies (Dearing et al, 2006;Hoffmann et al, 2010), particularly since the Ruddiman's hypothesis about the anthropogenic greenhouse era (2003,2007). One of the main questions addresses the tipping elements that indicate ecosystems dynamics (Lenton et al, 2008) over the Holocene controlled by climatic or human forcing factors (Hoffmann et al, 2008;Magny et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Orbital changes, variation in solar activity and increased anthropogenic activities: controls on the Holocene flood frequency in the Lake Ledro area, Northern Italy

et al. 2013

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Abstract. Two lacustrine sediment cores from Lake Ledro in northern Italy were studied to produce chronologies of flood events for the past 10 000 yr. For this purpose, we have developed an automatic method that objectively identifies the sedimentary imprint of river floods in the downstream lake basin. The method was based on colour data extracted from processed core photographs, and the count data were analysed to capture the flood signal. Flood frequency and reconstructed sedimentary dynamics were compared with lake-level changes and pollen inferred vegetation dynamics. The results suggest a record marked by low flood frequency during the early and middle Holocene (10 000–4500 cal BP). Only modest increases during short intervals are recorded at ca. 8000, 7500, and 7100 cal BP. After 4500–4000 cal BP, the record shows a shift toward increased flood frequency. With the exception of two short intervals around 2900–2500 and 1800–1400 cal BP, which show a slightly reduced number of floods, the trend of increasing flood frequency prevailed until the 20th century, reaching a maximum between the 16th and the 19th centuries. Brief-flood frequency increases recorded during the early and middle Holocene can be attributed to cold climatic oscillations. On a centennial time scale, major changes in flood frequency, such as those observed after ca. 4500/4000 and 500 cal BP, can be attributed to large-scale climatic changes such as the Neo-glacial and Little Ice Age, which are under orbital and possibly solar control. However, in the Bronze Age and during the Middle Ages and modern times, forest clearing and land use probably partially control the flood activity.

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Section: Introductionmentioning

confidence: 99%

Orbital changes, variation in solar activity and increased anthropogenic activities: controls on the Holocene flood frequency in the Lake Ledro area, Northern Italy

et al. 2013

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“…They calculated the total amount of floodplain sediments accumulated in the non-Alpine part of the Rhine catchment. Hoffmann et al (2009) concluded from their study of the Rhine catchment that floodplain sedimentation due to human impact masks possible climate forcing and complex river behaviour. In Hungary, Kiss et al (2008) identified a relationship between an increase in flood frequency on the River Tisza and progressive channel changes induced by river straightening and stabilization in the 19th and 20th centuries.…”

Section: Introductionmentioning

confidence: 99%

Floods and floodplain changes of the River Morava, the Strážnické Pomoraví region (Czech Republic) over the past 130 years

Brázdil

Máčka

Řezníčková

et al. 2011

Hydrological Sciences Journal

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The development of the River Morava floodplain has been influenced by several natural and anthropogenic factors. This paper focuses on variations in flood activity and channel changes of the River Morava in the region of Strážnické Pomoraví (southeastern Czech Republic). Floods are analysed in terms of measured peak water stages, H k (Rohatec, 1886(Rohatec, -1920 and peak discharges Q k (Rohatec/Strážnice, 1921 evaluated with respect to their N-year return period (H N or Q N ). The frequency of floods with Q k ≥ Q 2 reaches a significant maximum in March, followed by July. According to flood series compiled from 1881 onwards, their frequency peaked in the 1961-1970 decade with the most severe events occurring in July 1997 (Q 100 ), March 2006 and June 2010 (Q 50 ). During the study period the natural dynamics of the original anabranching channel patterns were significantly modified by human intervention, such as the abandonment of some anabranching channels, channel straightening, enlargement of the main channel, flood-dike construction, and the creation of the Bat'a shipping channel. These changes resulted in decreased frequency and a reduction in the extent of floodplain inundations compared to the period prior to channel modifications in the 1930s. Q 50 ). Au cours de la période, les dynamiques naturelles d'écoulement du lit original en tresses ont été profondément transformées par l'intervention humaine: abandon des lits en tresses, redressement et élar-gissement du lit principal, construction de digues contre les crues, et création du canal de navigation Bat'a. Ces changements ont eu pour résultat de réduire la fréquence et la zone d'expansion des inondations dans la plaine par rapport à la situation qui prévalait antérieurement à la canalisation de la rivière dans les années 1930.Mots clefs inondation; transformation de la plaine d'inondation; transformation du lit fluvial; lit anastomosé; région de Strážnicke Pomoraví; Rivière Morava

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“…The amount of sediment reaching larger floodplains depended on the sedimenttransfer coupling between eroding slopes, colluvial and minor valley deposition, and the major floodplains themselves (Brown, 1987b;Hoffmann et al, 2009). Mills and fishponds on small tributary streams appear to have trapped a proportion of eroded materials.…”

Section: Soil Erosion and Floodplain Sedimentationmentioning

confidence: 99%

Medieval environmental impacts and feedbacks: The lowland floodplains of England and Wales

Lewin

2010

Geoarchaeology

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Because of their varying channel styles (braided, meandering, and anastomosing) medieval lowland floodplains in England and Wales provided varying opportunities for defense, settlement, river crossing, and resource exploitation. In turn, these activities altered the character of channels and floodplains, with medieval and later development obscuring the former variety of floodplains themselves. The changing nature of river floodplains is reviewed using archaeological, documentary, and geomorphological evidence. Anastomosing channels and floodplain wetlands have now all but disappeared but were formerly of considerable significance; also discussed are interactions involving flooding, fording, bridging, modifications to channels and their dimensions, and those arising from accelerated soil erosion-most of which peaked in the medieval period when floodplains were significantly transformed. Deliberately or inadvertently, dynamic floodplain landforms were interactively involved with human development during a critical time period in a totality of ways not previously fully identified.

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Trends and controls of Holocene floodplain sedimentation in the Rhine catchment

Cited by 105 publications

References 41 publications

Orbital changes, variation in solar activity and increased anthropogenic activities: controls on the Holocene flood frequency in the Lake Ledro area, Northern Italy

Orbital changes, variation in solar activity and increased anthropogenic activities: controls on the Holocene flood frequency in the Lake Ledro area, Northern Italy

Floods and floodplain changes of the River Morava, the Strážnické Pomoraví region (Czech Republic) over the past 130 years

Medieval environmental impacts and feedbacks: The lowland floodplains of England and Wales

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