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Water
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Observation and Modeling of Coastal Morphodynamics
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Observation and Modeling of Coastal Morphodynamics

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Oceans and Coastal Zones".

Deadline for manuscript submissions: closed (30 May 2020) | Viewed by 4370

Special Issue Editor

Prof. Arthur Trembanis

E-Mail Website
Guest Editor
University of Delaware, Newark, DE, USA
Interests: beach morphology, ripple morphodynamics, scour processes, storm impacts, beach nourishment, seafloor mapping, autonomous aerial and underwater systems

Special Issue Information

Dear Colleagues,

Coastal Morphodynamics aims to understand the bi-directional interplay between seabed morphology and hydrodynamic flow. Robotic autonomous systems (in the air, on the surface, and underwater) for remote sensing, machine learning, and numerical modeling have sparked profound advances in our ability to capture and quantify sediment transport and morphologic patterns. This Special Issue seeks to highlight innovative studies that incorporate new approaches to coastal monitoring, modeling, or analytical techniques to explore and understand these interactions with implications for beach erosion response, coastal resilience, storm recovery, impacts to human-built infrastructure, or coastal management, policy, and restoration. Contributions are particularly sought that integrate multiple techniques and that illustrate innovations with applicability beyond the specific case study.

Prof. Arthur Trembanis
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • beach and inlet morphology
  • barrier island dynamics
  • bedform evolution
  • autonomous systems
  • sediment transport
  • erosion and scour
  • habitat mapping
  • numerical modeling
  • machine learning

Published Papers (2 papers)

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Research

16 pages, 11263 KiB  
Article
Comparative Study on Numerical Calculation of 2-D Random Sea Surface Based on Fractal Method and Monte Carlo Method
by Gengkun Wu, Chuanxi Liu and Yongquan Liang
Water 2020, 12(7), 1871; https://doi.org/10.3390/w12071871 - 30 Jun 2020
Cited by 2 | Viewed by 1805
Abstract
Based on fifty one groups of data on direction distribution measured from buoy sites, several important spectrum parameters including distribution characteristics of the measured data’s spectrum, the Wen’s direction spectrum and the Donelan function are analyzed from the perspectives of standard deviation of [...] Read more.
Based on fifty one groups of data on direction distribution measured from buoy sites, several important spectrum parameters including distribution characteristics of the measured data’s spectrum, the Wen’s direction spectrum and the Donelan function are analyzed from the perspectives of standard deviation of directional distribution function and statistical results. Then, a numeric calculation model based on the Monte Carlo method is proposed in this work. At the same time—based on Weierstrass self-affine fractal function—numeric simulation of random sea surface is conducted by modifying the bilateral power law. The analysis of the numeric calculation results under different wind directions, speeds and fetches proves that both methods can be adopted for different water directional distributions and target spectrum models. In addition, this study compares the characteristic wave within different distribution frequency domains in the main wave direction and in its orthogonal direction. It is proved that the fractal method cannot fully reflect the anisotropy of gravity wave and tension wave in the superposition direction, however, it can maintain the similarity of overall energy part with the rough length of the waves. Moreover, there are still limitations of the fractal method in the numeric modeling of undeveloped sea surface. Full article
(This article belongs to the Special Issue Observation and Modeling of Coastal Morphodynamics)
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18 pages, 18278 KiB  
Article
Seasonal Estuarine Turbidity Maximum under Strong Tidal Dynamics: Three-Year Observations in the Changjiang River Estuary
by Xia Hua, Huiming Huang, Yigang Wang, Xiao Yu, Kun Zhao and Dake Chen
Water 2020, 12(7), 1854; https://doi.org/10.3390/w12071854 - 28 Jun 2020
Cited by 3 | Viewed by 2286
Abstract
The estuarine turbidity maximum (ETM) under strong tidal dynamics (during spring tides) was investigated along the Deepwater Navigation Channel (DNC) in the North Passage (NP) of the Changjiang River Estuary (CRE) in wet and dry seasons of 2016, 2017 and 2018. The observed [...] Read more.
The estuarine turbidity maximum (ETM) under strong tidal dynamics (during spring tides) was investigated along the Deepwater Navigation Channel (DNC) in the North Passage (NP) of the Changjiang River Estuary (CRE) in wet and dry seasons of 2016, 2017 and 2018. The observed water current, salinity, stratification and suspended sediment concentration (SSC) were illustrated and analyzed. Results show that the SSC was lower in wet seasons than dry seasons in 2016 and 2017 because of the weak influence of typhoons before observations in wet seasons. On the contrary, the SSC was higher in the wet season than the dry season in 2018 because of the strong influence of typhoons in the wet season. Our observations challenged the common perspective that SSC in the NP is higher in wet seasons than dry seasons, because the magnitudes of SSC were found to be easily influenced by strong winds before observations. The along-channel distribution of high SSC was determined by the location of salt wedge, and consequently, the ETM was further upstream in dry seasons than wet seasons. The observed SSC was more concentrated in lower water layers in wet seasons (“exponential” profile) than dry seasons (“linear” profile). This seasonal difference of vertical SSC was related to the flocculation setting velocity influenced by temperature rather than the weak stratification during spring tides. Moreover, on the basis of the net water/sediment transport and flux splitting, large river discharge and a low-SSC condition could reduce siltation in the middle DNC. The former vanished the convergence of water transport, and the latter reduced landward tidal pumping sediment transport. Sediment trapping and siltation in the dry seasons occurred in the seaward segment of the upper reach because of the decrease in the river discharge. Full article
(This article belongs to the Special Issue Observation and Modeling of Coastal Morphodynamics)
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