Analysis of far-field erosion induced by low-crested rubble-mound structures

Zyserman, Julio A.; Johnson, Hakeem K.; Zanuttigh, Barbara; Martinelli, Luca

doi:10.1016/j.coastaleng.2005.09.013

Cited by 45 publications

(23 citation statements)

References 18 publications

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“…By interrupting wave action, defence structures modify the nearshore water circulation (Zyserman et al, 2005) and cross-shore-offshore transport of sediment (Thomalla & Vincent, 2003;Cuadrado et al, 2005), leading to changes in bottom topography, sediment grain size and organic content (e.g. Agnew & Taylor, 1986;Correggiari et al, 1990;Bull et al, 1998).…”

Section: Introductionmentioning

confidence: 98%

Effects of an artificial protection structure on the sandy shore macrofaunal community: the special case of Lido di Dante (Northern Adriatic Sea)

et al. 2007

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This study analysed the benthic compartment at Lido di Dante (Northern Adriatic Sea, Italy) within the frame of an integrated European project (DELOS), which aimed to identify, describe and quantify the effects of the Low Crested Structures (LCS) on the beach environment of many European coastlines. Both macrofaunal benthic communities and sediment characteristics were analysed in a sandy beach protected by a LCS parallel to the shoreline and laterally connected to land by two groynes, which have been responsible for changes of hydrodynamic patterns. A first survey (2001) focused on three exposure levels with respect to wave action. A higher species richness and a different community structure were found in the sheltered site as compared to the exposed and partially exposed sites. In addition, changes in sediment variables were found according to the exposure levels. A second survey (2002) assessed the combined effects of exposure and depth on both benthic communities and sediment variables. Our results suggest that both exposure and depth interact on measured biotic and abiotic variables. Species richness, community structure and size-classes distribution of the macrofauna, as well as the sediment composition, showed the greatest differences among the shallowest exposed zone and the deepest sheltered ones. On the contrary no difference at all occurred between the shallowest sheltered zone and the deepest exposed ones.

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Section: Introductionmentioning

confidence: 98%

Effects of an artificial protection structure on the sandy shore macrofaunal community: the special case of Lido di Dante (Northern Adriatic Sea)

et al. 2007

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“…Water depth tended to be greatest at the gap site but least at the sheltered site. Offshore breakwaters may result in sand deposition at the sheltered site due to reduced wave activity, while sectional erosion may occur at the gap site due to rip currents [8,25]. Such abiotic environmental variabilities among the three sites, however, did not generate any corresponding changes in the basic structure of the associated fish assemblage in terms of numbers of species and individuals, species composition, and body size.…”

Section: Discussionmentioning

confidence: 93%

Influence of offshore breakwaters on fish assemblage structure in the surf zone of a sandy beach in Tokyo Bay, central Japan

2011

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To determine the effects of shore-parallel offshore breakwaters on the surf-zone fish assemblage structure of a sandy beach, three study sites (sheltered inshore of breakwater, between adjacent breakwaters, and exposed without breakwaters) were sampled at Ohnuki . Although some physical variables (wave height, turbidity, and water depth) differed among the three sites, no differences were apparent among the sites in the numbers of fish species and individuals, or in the abundance of epibenthic invertebrates (a main fish prey). In addition, species and individual numbers of two dominant feeding groups (mysid and copepod feeders) showed no significant among-site differences. Cluster and ordination analyses confirmed the similarity in fish species composition among the three sites. Furthermore, the mean standard length of all fishes collected throughout the study period did not differ significantly among the sites, the overall results indicating that the presence of breakwaters had little effect on surf-zone fish assemblage structure in the study area, despite some breakwater-related differences in the abiotic environment.

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“…Predicted transport, based on local values, is maximum at the gap center, where currents reach the maximum intensity, waves being almost uniform in the gap area; erosion, given by the transport divergence, should therefore be zero here, whereas it is observed to be greater than zero both in laboratory conditions and in prototype cases (for instance Lido di Dante, Italy; Zyserman et al, 2005).…”

Section: Transport Induced By Combination Of Waves and Currentsmentioning

confidence: 98%

Hydrodynamic and morphodynamic response of isolated and multiple low crested structures: Experiments and simulations

Martinelli¹,

Zanuttigh²,

Lamberti³

2006

Coastal Engineering

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Analysis of far-field erosion induced by low-crested rubble-mound structures

Cited by 45 publications

References 18 publications

Effects of an artificial protection structure on the sandy shore macrofaunal community: the special case of Lido di Dante (Northern Adriatic Sea)

Effects of an artificial protection structure on the sandy shore macrofaunal community: the special case of Lido di Dante (Northern Adriatic Sea)

Influence of offshore breakwaters on fish assemblage structure in the surf zone of a sandy beach in Tokyo Bay, central Japan

Hydrodynamic and morphodynamic response of isolated and multiple low crested structures: Experiments and simulations

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