An OpenMI-based combined model for alongshore sediment transport and shoreline change

Zhou, Zeng; Blanco, B.; Nicholls, Robert J.

doi:10.1680/maen.2012.14

Cited by 4 publications

(3 citation statements)

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“…However, this considers the inlet or estuary as an isolated unit rather than linked to the adjacent coast. To take account of littoral drift, or to link ASMITA to a shoreline model, such as a one-line beach model (Zhou et al, 2013), the alongshore sediment transport need to be included as an input to and output from the tidal delta.…”

Section: Delta and Littoral Driftmentioning

confidence: 99%

Development and extension of an aggregated scale model: Part 2 — Extensions to ASMITA

et al. 2016

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Whilst much attention has been given to models that describe wave, tide and sediment transport processes in sufficient detail to determine the local changes in bed level over a relatively detailed representation of the bathymetry, far less attention has been given to models that consider the problem at a much larger scale (e.g. that of geomorphological elements such as a tidal flat and tidal channel). Such aggregated or lumped models tend not to represent the processes in detail but rather capture the behaviour at the scale of interest. One such model developed using the concept of an equilibrium concentration is the Aggregated Scale Morphological Interaction between Tidal basin and Adjacent coast (ASMITA). In a companion paper (Part 1), we detail the original model and provide some new insights into the concepts of equilibrium, and horizontal and vertical exchange that are key components of this modelling approach. In this paper, we summarise a range of developments that have been undertaken to extend the original model concept, to illustrate the flexibility and power of the conceptual framework. However, adding detail progressively moves the model in the direction of the more detailed process-based models and we give some consideration to the boundary between the two. Highlights  A range of extensions to the original model ASMITA model are presented that allow additional processes or features to be represented in the model. The merits of ever increasing complexity within an aggregated model, versus the use of a suitable local-scale and more detailed process-based model are discussed.

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Section: Delta and Littoral Driftmentioning

confidence: 99%

Development and extension of an aggregated scale model: Part 2 — Extensions to ASMITA

et al. 2016

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“…The OpenMI standard was therefore designed to enable different types of catchment models, representing processes at different spatial and temporal scales, to run simultaneously, exchanging data at run-time. It has been widely applied for linking different types of environmental models that are designed, constructed and calibrated to simulate processes at different scales (Betrie et al, 2011;Elag et al, 2011;Janssen et al, 2011;Safiolea et al, 2011;Liao et al, 2012;Butts et al, 2013;Castronova & Goodall, 2013;Castronova et al, 2013;Goodall et al, 2013;Shrestha et al, 2013;Zhou et al, 2013;Shrestha et al, 2014;Zhu et al, 2016). This paper presents a novel methodology for linking a radial flow model with a regional groundwater model for simulating the groundwater level response in an abstraction borehole within its regional context.…”

Section: Introductionmentioning

confidence: 99%

An integrated modelling approach for assessing the effect of multiscale complexity on groundwater source yields

Upton

Jackson

Butler

et al. 2020

Journal of Hydrology

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A new multi-scale groundwater modelling methodology is presented to simulate pumped water levels in abstraction boreholes within regional groundwater models, providing a robust tool for assessing the sustainable yield of supply boreholes and improving our understanding of groundwater availability during drought. A 3D borehole-scale model, which solves the Darcy-Forchheimer equation in cylindrical co-ordinates to simulate both linear and non-linear radial flow to a borehole in a heterogeneous aquifer, is embedded within a Cartesian grid, using a hybrid radial-Cartesian finite difference method. The local-scale model is coupled to a regional groundwater model, ZOOMQ3D, using the OpenMI model linkage software, providing a flexible and efficient tool for assessing the behaviour of a groundwater source within its regional hydrogeological context during historic droughts and under climate change. The advantages of the new method are demonstrated through application to a Chalk supply borehole in the UK.

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“…Zhou et al (2013) explain the additional steps needed to make such a link and they test the resulting model on a case study of Bournemouth beach in the UK. The paper provides a useful exploration of what is entailed in building a model composition from a number of existing models and how the OpenMI standard can help support this type of development.…”

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confidence: 99%

Editorial

Burgess¹,

Townend²

2013

Proceedings of the Institution of Civil Engineers - Maritime En

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In the June issue of Maritime Engineering we presented a set of papers from the 7th International Association for Hydroenvironment Engineering and Research (IAHR) symposium on river, coastal and estuarine morphodynamics (RCEM), which was held in Beijing in September 2011. The focus of the June issue (Townend et al., 2013) was on estuaries and inlets. In this issue we present two more papers that relate to the open coast.The RCEM symposium was jointly hosted by Tsinghua University and the UNESCO International Research and Training Centre on Erosion and Sedimentation. In total, 318 abstracts were submitted to the symposium. The abstracts were reviewed by the international scientific committee and 261 were accepted. The symposium was attended by 258 researchers and scientists from 29 countries and regions. Four keynote lectures were delivered in plenary sessions and 12 invited lectures were presented in parallel sessions. More than 200 contributed lectures were presented by delegates at 36 parallel sessions. A selection committee attended all the sessions and recommended five papers for the best presentation award.The two papers from RCEM in this issue focus on the behaviours and modelling of embayed beaches. The first reports the results of a detailed monitoring programme of Cempedak Bay beach on the east coast of Malaysia (Ab Razak et al., 2013). This covered a period of 3 years during which a beach-nourishment scheme was implemented. The authors analyse the monitoring data, along with associated wind and wave data, to develop an understanding of the dominant controls on the beach. Using this information they develop a reasoned assessment of how the recharge scheme has performed. In so doing, they also provide some useful insights into the capability of an empirical model for planform prediction.The second paper from RCEM explores that ability to link models of beach plan shape and cross-shore development to establish a more detailed representation of the key processes. Zhou et al. (2013) explain the additional steps needed to make such a link and they test the resulting model on a case study of Bournemouth beach in the UK. The paper provides a useful exploration of what is entailed in building a model composition from a number of existing models and how the OpenMI standard can help support this type of development. The case study highlights the needs of engineering applications using this type of model and assesses how well the model composition performs.The difficulty in predicting the planform is highlighted in both cases. For the Bournemouth beach this is attributed to the influence of nearshore tidal currents that are not represented in the model. Application of the parabolic bay model to assess planform stability in Cempedak Bay also proved difficult and the authors contend that this was due to the difficulty in selecting the diffraction point. Interestingly, they also discuss the role of the Cempedak river, which outflows to the north of the recharged area. However, because the sediment load is low, the in...

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An OpenMI-based combined model for alongshore sediment transport and shoreline change

Cited by 4 publications

References 12 publications

Development and extension of an aggregated scale model: Part 2 — Extensions to ASMITA

Development and extension of an aggregated scale model: Part 2 — Extensions to ASMITA

An integrated modelling approach for assessing the effect of multiscale complexity on groundwater source yields

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