Article
Environmental Sciences
Congshuang Xie, Peng Chen, Delu Pan, Chunyi Zhong, Zhenhua Zhang
Summary: The study proposed a new Satellite-derived bathymetry method that does not require in situ data by merging active and passive remote sensing. This method allows for rapid and accurate bathymetric mapping without the need for prior in situ data, and has great potential for large-scale and long-term nearshore bathymetry.
Article
Environmental Sciences
Diogo Santos, Tiago Abreu, Paulo A. Silva, Fabio Santos, Paulo Baptista
Summary: A wavelet-based method using a sequence of static images to retrieve bathymetry is proposed. The method generates synthetic images and uses spectral analysis to estimate wave periods, wavelengths, and water depths. The results are validated with model's bathymetry and real case simulations, showing robustness and accuracy in reproducing bathymetry.
Article
Geography, Physical
Xiaohan Zhang, Wei Han, Jun Li, Lizhe Wang
Summary: Accurate bathymetric information is crucial for marine resource development and nearshore ecological protection. This study developed a dual-time phase bispectrum optimization algorithm (DPBOA) to estimate water depth using multispectral imagery in areas without measured data, and the results demonstrate its effectiveness through validation.
GISCIENCE & REMOTE SENSING
(2023)
Article
Environmental Sciences
Isaac Rodriguez-Padilla, Bruno Castelle, Vincent Marieu, Denis Morichon
Summary: This paper examines the influence of headlands on the morphological response of beaches and explores the potential of deriving bathymetries from video imagery. The study found that the rates of accretion/erosion within the surf zone are strongly influenced by the headland, and the beach response can be classified into three regimes depending on the angle of wave incidence. The comparison between video-derived bathymetries and surveys showed some errors, but still provided valuable insights into storm-driven morphological changes.
Article
Environmental Sciences
Evangelos Alevizos, Dimitrios D. Alexakis
Summary: This study introduces a new method for monitoring shallow bathymetry changes using drone multispectral imagery. The results show good correlation and low errors with sonar measurements, and assist in identifying different morphobathymetric features. The temporal data reveal important erosional and depositional patterns, and show a migration trend in the shallow bathymetry over a 5-month period. Drone-based multispectral imagery proves to be an important and cost-effective tool for shallow seafloor mapping and monitoring when combined with shallow water analytical models.
Article
Environmental Sciences
Xiaomeng Geng, Lingli Zhao, Lei Shi, Jie Yang, Pingxiang Li, Weidong Sun
Summary: Ship detection in nearshore areas faces challenges such as material scattering, data labeling difficulties, and interference. A novel method based on candidate target detection, boundary box optimization, and active learning strategy is proposed to achieve high accuracy and efficiency in complex nearshore regions.
Article
Environmental Sciences
Yalei Li, Hege Gundersen, Robert Noddebo Poulsen, Lina Xie, Zhenming Ge, Kasper Hancke
Summary: Macroalgae and seagrass washed ashore create an ocean-to-land transport of carbon and nutrients. A novel method combining UAV photogrammetry and in situ measurements was proposed to quantify marine carbon and nutrient deposits in beach zones. The UAV method showed high accuracy for volume acquisition and cross-sectional area assessment when compared to manual and GNSS measurements. The method demonstrated its effectiveness in quantifying ecosystem carbon and nitrogen deposits, making it valuable for environmental monitoring and management.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Remote Sensing
Osmar Luiz Ferreira de Carvalho, Osmar Abilio de Carvalho Junior, Anesmar Olino de Albuquerque, Nickolas Castro Santana, Dibio Leandro Borges, Argelica Saiaka Luiz, Roberto Arnaldo Trancoso Gomes, Renato Fontes Guimaraes
Summary: This study proposes the first multispectral panoptic segmentation study, which simultaneously recognizes objects and scenes in beach scenarios by evaluating different sets of spectral bands and using the Panoptic-FPN architecture. The results show that the ResNeXt-101 model with all spectral bands performs the best, and semantic models perform poorly in crowded scenes. Panoptic segmentation plays an important role in inspecting tourist infrastructure and mapping background features in beach areas.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Engineering, Geological
Ibsen Chivata Cardenas
Summary: In this paper, a new two-dimensional approach to quantify stratigraphic uncertainty is proposed and demonstrated using a case analysis, showing its usefulness in exploring and representing geological structures and quantifying uncertainty in a computationally inexpensive way.
ENGINEERING GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Xiaolong Geng, James W. Heiss, Holly A. Michael, Hailong Li, Britt Raubenheimer, Michel C. Boufadel
Summary: Coastal beach aquifers are complex systems that play a key role in mediating chemical and material fluxes between land and sea, influenced by physical stressors and geological features. Understanding the interactions between these factors and their impact on water and geochemical fluxes poses challenges for measuring and modeling processes in coastal groundwater systems.
EARTH-SCIENCE REVIEWS
(2021)
Article
Multidisciplinary Sciences
Stephane Bertin, France Floc'h, Nicolas Le Dantec, Marion Jaud, Romain Cancouet, Marcaurelio Franzetti, Veronique Cuq, Christophe Prunier, Jerome Ammann, Emmanuel Augereau, Stevenn Lamarche, Deborah Belleney, Mathias Rouan, Laurence David, Anne Deschamps, Christophe Delacourt, Serge Suanez
Summary: Long-term datasets documenting coastal forms and processes are difficult to collect and rarely made available, but they are essential for understanding coastal change and improving models for future coast planning. This study presents topographic and bathymetric survey results from Porsmilin beach in northwest France, including over 16 years of monthly beach profile data and high-resolution digital elevation models. The dataset also includes time-series data of inshore waves and water levels, providing valuable information for coastal research.
Article
Environmental Sciences
Jing Zhong, Jie Sun, Zulong Lai, Yan Song
Summary: A deep learning framework for nearshore bathymetry was proposed in this paper, utilizing ICESat-2 LiDAR and Sentinel-2 Imagery datasets. It showed better accuracy compared to traditional methods in shallow water nearshore bathymetry.
Article
Computer Science, Theory & Methods
Chandrakanth Gudavalli, Michael Goebel, Tejaswi Nanjundaswamy, Lakshmanan Nataraj, Shivkumar Chandrasekaran, B. S. Manjunath
Summary: Recent advances in machine learning and computer vision have simplified the manipulation of various media, including satellite images. This paper introduces a novel method to verify the authenticity of RPC metadata in orthorectified satellite images using Residual Discrete Fourier Transform (DFT) patterns and the Structural Similarity Index Metric (SSIM). Experimental results demonstrate over 97% accuracy in binary tampering detection tests.
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY
(2023)
Article
Engineering, Marine
Andrea Tadic, Igor Ruzic, Nino Krvavica, Suzana Ilic
Summary: This study utilized UAV surveys and SfM photogrammetry to evaluate the performance of an artificial gravel beach exposed to various external forces, including storms. The results showed that the beach experienced the largest changes after the first storm following nourishment, with most sediment loss occurring on the east side. However, overall changes in beach volume and area were relatively small, indicating the stability of the artificial beach. The study emphasized the importance of considering pocket embayed beaches in three dimensions and highlighted the potential of UAVs and SfM for high-resolution elevation change studies and coastal monitoring of beach nourishment.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Rob Holman, Erwin W. J. Bergsma
Summary: This study presents and evaluates a series of improvements to the cBathy algorithm for estimating bathymetry based on optical observations of nearshore waves. The new version V2.0 showed improvements in statistical measures compared to the original version V1.0, suggesting it to be the new standard algorithm.
Article
Engineering, Civil
H. C. W. van Verseveld, A. R. van Dongeren, N. G. Plant, W. S. Jager, C. den Heijer
COASTAL ENGINEERING
(2015)
Article
Computer Science, Interdisciplinary Applications
Michael N. Fienen, Nathaniel G. Plant
ENVIRONMENTAL MODELLING & SOFTWARE
(2015)
Article
Geosciences, Multidisciplinary
Thomas Wahl, Nathaniel G. Plant
GEOPHYSICAL RESEARCH LETTERS
(2015)
Article
Environmental Sciences
P. Soupy Dalyander, Nathaniel G. Plant, Joseph W. Long, Molly McLaughlin
MARINE POLLUTION BULLETIN
(2015)
Article
Geosciences, Multidisciplinary
Benjamin T. Gutierrez, Nathaniel G. Plant, E. Robert Thieler, Aaron Turecek
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2015)
Article
Engineering, Civil
J. W. Long, N. G. Plant, P. S. Dalyander, D. M. Thompson
COASTAL ENGINEERING
(2014)
Article
Engineering, Civil
H. F. Stockdon, D. M. Thompson, N. G. Plant, J. W. Long
COASTAL ENGINEERING
(2014)
Article
Ecology
Katherina D. Gieder, Sarah M. Karpanty, James D. Fraser, Daniel H. Catlin, Benjamin T. Gutierrez, Nathaniel G. Plant, Aaron M. Turecek, Robert Thieler
ECOLOGICAL MODELLING
(2014)
Article
Geosciences, Multidisciplinary
Joseph W. Long, Anouk T. M. de Bakker, Nathaniel G. Plant
GEOPHYSICAL RESEARCH LETTERS
(2014)
Article
Geosciences, Multidisciplinary
Christopher R. Sherwood, Joseph W. Long, Patrick J. Dickhudt, P. Soupy Dalyander, David M. Thompson, Nathaniel G. Plant
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2014)
Article
Geosciences, Multidisciplinary
Nathaniel G. Plant, James Flocks, Hilary F. Stockdon, Joseph W. Long, Kristy Guy, David M. Thompson, Jamie M. Cormier, Christopher G. Smith, Jennifer L. Miselis, P. Soupy Dalyander
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2014)
Article
Engineering, Civil
Kuifeng Zhao, Yufei Wang, Philip L. -F. Liu
Summary: This note provides guidelines for selecting appropriate analytical periodic water wave solutions based on two physical parameters. The guidelines are summarized in a graphic format and the dividing lines between applicable wave theories are determined by the nonlinearity and frequency dispersion ratios.
COASTAL ENGINEERING
(2024)
Article
Engineering, Civil
Jana Haddad, Johanna H. Rosman, Richard A. Luettich, Christine M. Voss
Summary: Understanding wave transformation in marsh vegetation canopies is crucial for assessing nature-based shoreline strategies. This study investigates the challenges of accurately modeling wave dissipation in coastal marshes and proposes a new dimensionless parameter to represent the canopy drag coefficient (C-D). The study finds that uncertainties in vegetation measurements lead to variations in C-D expressions, and suggests using the Cauchy number (Ca) as the more appropriate parameter for larger waves.
COASTAL ENGINEERING
(2024)
Article
Engineering, Civil
Dirk P. Rijnsdorp, Arnold van Rooijen, Ad Reniers, Marion Tissier, Floris de Wit, Marcel Zijlema
Summary: This paper extends the non-hydrostatic wave-flow model SWASH to account for the influence of a depth-uniform ambient current on wave dynamics. The model's ability is verified by comparing predictions to results from linear theory, laboratory experiments, and a spectral wave model. The extended model accurately captures current-induced changes in the wave field and simulations of wave dynamics in the presence of strong opposing currents.
COASTAL ENGINEERING
(2024)
Article
Engineering, Civil
Zhihao Shen, Duruo Huang, Gang Wang, Feng Jin
Summary: In this study, a resolved CFD-DEM coupling procedure was proposed to study the interaction of waves and irregularly shaped armour units. The model was validated by comparing the numerical results with a flume wave erosion test. The influence of armour shape on overtopping discharge, pressure distribution, and vortex structure was also studied.
COASTAL ENGINEERING
(2024)
Article
Engineering, Civil
Xinyu Hou, Zhonghua Weng, Xin Chen, Gengfa Chen
Summary: A single-phase model is proposed to predict sediment motion on vortex rippled bed under wave action. The model takes into account the acceleration effect of bottom sediment, the development of asymmetric boundary layer, and the sediment phase-lag, and successfully predicts the velocity, concentration, and development of sediment cloud on vortex ripples.
COASTAL ENGINEERING
(2024)
Article
Engineering, Civil
Mark Loveland, Eirik Valseth, Jessica Meixner, Clint Dawson
Summary: This article discusses the importance of using numerical models to predict the wind wave spectrum of the ocean. The article explores various finite element discretizations of the Wave Action Balance Equation and examines their convergence properties through simplified 2-D test cases. It also introduces a new spectral wind wave model called WAVEx and its implementation method.
COASTAL ENGINEERING
(2024)
Article
Engineering, Civil
Yuan Li, Chi Zhang, Shaohua Zhao, Hongshuai Qi, Feng Cai, Jinhai Zheng
Summary: Sandy-muddy transitional beaches (SMT-Beaches) are a type of coastal formation consisting of upper sandy beach and lower mudflat. This study examined the morphological characteristics of SMT-Beaches and the mechanisms of the formation of sandmud transition (SMT) boundary. Field surveys were conducted on SMT-Beaches in South China Coasts and a new equilibrium profile function for SMT-Beaches was developed. The function demonstrated good performance and improved accuracy compared to traditional methods. It was also found that sediment characteristics differ on both sides of the SMT boundary, with clay-to-silt grains increasing seaward.
COASTAL ENGINEERING
(2024)
Article
Engineering, Civil
He Ma, Ludi Xu, Samuel Ukpong Okon, Peng Hu, Wei Li, Huabin Shi, Zhiguo He
Summary: This study presents a coupled model to predict morphodynamic changes during storm surges. The model accurately simulates the morphological evolution of the Santa Rosa barrier island caused by Hurricane Ivan's storm surge.
COASTAL ENGINEERING
(2024)
Article
Engineering, Civil
Myung Jin Koh, Hyoungsu Park, Albert S. Kim
Summary: A framework combining tsunami flow model and debris transport model is developed to evaluate the kinematics of multiple debris and sequential hazards in a coastal community. The impact of tsunami-driven debris at Honolulu Harbor, Hawaii is assessed by simulating the motion of 2500 shipping containers under a hypothetical tsunami event. New types of intensity measures for tsunami-driven debris hazards are introduced, and hazard maps showing the potential impact loadings from debris dispersion are presented.
COASTAL ENGINEERING
(2024)