Comment on: Mid-Holocene water-level changes in the lower Rhine-Meuse delta (western Netherlands): implications for the reconstruction of relative mean sea-level rise, palaeoriver-gradients and coastal evolution by Van de Plassche et al. (2010)

Hijma, M.P.; Cohen, K.M.

doi:10.1017/s0016774600000664

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…This effect is basically caused by insufficient time during the flood and ebb phases to fill or drain the vast back-barrier area to the offshore MLW and MHW levels (Zonneveld, 1960;Van Veen et al, 2005). Starting with Van de Plassche (1980), several papers have discussed the role of the flood-basin effect in RSL-reconstruction context (Van de Plassche, 1982Plassche, , 1995Berendsen et al, 2007;Hijma andCohen, 2010, 2011b;Van de Plassche et al, 2010;Vis et al, 2015). Building on this previous work, the palaeotidal fields in the database include an assessment of the flood-basin effect, uniformly re-evaluated for successive palaeogeographical developments in the lower RMD.…”

Section: Tidal Datums and Palaeotidal Changesmentioning

confidence: 99%

Holocene sea-level database for the Rhine-Meuse Delta, The Netherlands: Implications for the pre-8.2 ka sea-level jump

Hijma

Cohen

2019

Quaternary Science Reviews

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Section: Tidal Datums and Palaeotidal Changesmentioning

confidence: 99%

Holocene sea-level database for the Rhine-Meuse Delta, The Netherlands: Implications for the pre-8.2 ka sea-level jump

Hijma

Cohen

2019

Quaternary Science Reviews

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“…Jelgersma, 1961; Shennan et al ., 2000; Brown et al ., 2018). Hijma & Cohen (2011, 2019) provide detailed palaeogeographic maps showing that basal peats/organic palaeosol layers are commonly present in the Rhine–Meuse palaeovalley. However, they caution that only those occurring over permeable surfaces (e.g.…”

Section: Temporal and Spatial Trendsmentioning

confidence: 99%

Coastal peat‐beds and peatlands of the southern North Sea: their past, present and future

Waller

Kirby

2020

Biological Reviews

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Peat layers are well represented in the Holocene coastal deposits of the southern North Sea and provide evidence as to the extent and nature of the fens and bogs that occupied the region in the mid and late Holocene. While natural processes contributed to their demise, without human interference extensive areas of peatland would remain. We review the characteristics of the vegetation of these peatlands along with the processes that influenced their development. Spatial and temporal trends are explored through the use of palaeogeographic maps from three areas: the East Anglian Fenland, the Romney Marsh area and the Netherlands. The palaeoecological evidence indicates that eutrophic vegetation promoted by rising relative sea level (RSL) dominated in the mid Holocene, with a trend towards the development of oligotrophic and ombrotrophic vegetation in the late Holocene as the rate of RSL rise declined. Nevertheless, areas of eutrophic vegetation appear capable of long‐term stability with areas of fen woodland and herbaceous fen persisting at some locations for several thousand years in the mid and late Holocene. Areas of active peat growth in the region are now largely confined to small remnants within agricultural settings. To retain their characteristic biodiversity these remnants have been managed using traditional practices, although their small size and fragmented distribution limits their biodiversity value. Biodiversity concerns and the ecosystem services peatlands provide, notably carbon sequestration and flood attenuation, underlie recent restoration projects. These efforts are likely to receive additional impetus as a consequence of rising water levels, given projected rates of RSL rise. Future large‐scale restoration can be informed by a greater understanding of the processes that formed and sustained coastal peatlands in the past. We identify advances in palaeoenvironmental research that could enhance restoration efforts and help maximise the ecosystem services delivered through such projects.

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“…Geological observations and modelling studies suggest that the tidal amplitudes have been approximately constant over the last 6,500 cal. yr (Figure b) (Hijma & Cohen, ; Roep & Beets, ; Van der Molen & De Swart, ), and that net littoral sediment drift has been dominantly northwards since 7,500 to 6,500 cal. yr bp (Hijma, Van der Spek, & Van Heteren, ; Van der Molen & Van Dijck, ).…”

Section: Geographical Setting and Boundary Conditionsmentioning

confidence: 99%

Long‐term evolution of the Old Rhine estuary: Unravelling effects of changing boundary conditions and inherited landscape

Haas

Valk

Cohen

et al. 2019

The Depositional Record

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The long‐term morphodynamic evolution of estuaries depends on a combination of antecedent topography and boundary conditions, including fluvial input, sea‐level change and regional‐landscape interactions. Identifying effects of such boundary conditions on estuary evolution is important to anticipate future changes in specific boundary conditions and for hindcasting with numerical and physical models. A comprehensive synthesis of the evolution of the former Old Rhine estuary is presented here, together with its boundary conditions over its full lifespan from 6,500 to 1,000 cal. yr bp. This system formed during a period of sea‐level high stand, during which the estuary served as the main River Rhine outlet. The estuary went through three stages of evolution: a maturation phase in a wide infilling back‐barrier basin, a stable mature phase and an abandoning phase, both in a laterally confined setting. The Old Rhine River formed by a river avulsion around 6,500 cal. yr bp that connected to a tidal channel within a large back‐barrier basin. Decelerating sea‐level rise caused the back‐barrier basin to silt up around 5,700 cal. yr bp, resulting in shoreline progradation by beach‐barrier formation until ∼2,000 cal. yr bp. Beach‐barrier formation along the coast and natural levee formation along the river triggered peat formation in the coastal plain, laterally constraining the estuary and limiting overbank deposition, which caused most sediment to accumulate offshore. The abandoning phase started around 2,200 cal. yr bp when a series of upstream avulsions led to a substantial reduction in fluvial input. This induced a period of enhanced estuarine overbank clay deposition that continued into near‐complete silting up and estuary closure around 1200 ad. These findings exemplify how tidal systems, formed in wide coastal plains during sea‐level high stand, depend on antecedent conditions, and how they respond to connection and disconnection of a large river over long, millennial timescales.

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Comment on: Mid-Holocene water-level changes in the lower Rhine-Meuse delta (western Netherlands): implications for the reconstruction of relative mean sea-level rise, palaeoriver-gradients and coastal evolution by Van de Plassche et al. (2010)

Cited by 4 publications

References 13 publications

Holocene sea-level database for the Rhine-Meuse Delta, The Netherlands: Implications for the pre-8.2 ka sea-level jump

Holocene sea-level database for the Rhine-Meuse Delta, The Netherlands: Implications for the pre-8.2 ka sea-level jump

Coastal peat‐beds and peatlands of the southern North Sea: their past, present and future

Long‐term evolution of the Old Rhine estuary: Unravelling effects of changing boundary conditions and inherited landscape

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