Article
Environmental Sciences
Changbin Lim, Jung-Lyul Lee
Summary: In this study, a set of governing equations were derived to simulate short-term shoreline changes by considering the horizontal behavior of suspended sediments. The beach response factor and beach recovery factor, two key variables related to transverse drift, can be obtained based on the median grain size. The actual transport speed of littoral drift was estimated by comparing with the CERC formula and considering the alongshore energy flux and wave duration.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Ateeth Shetty, R. S. Kankara, S. Dhanalakshmi, S. Buckle, S. Subburaj
Summary: The study examines the changes in shoreline and nearshore morphology to understand the variability of littoral drift and sediment budget. Erosion is observed in the northern sector, while accretion occurs in the southern sector. Seasonal changes in nearshore morphology indicate net erosion in the northern sector and net accretion in the southern sector. Human interventions reduce the quantity of sediment gain. The dominant littoral drift is towards north from February to October, and southwards from November to January.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Engineering, Marine
Changbin Lim, Jooyong Lee, Jung Lyul Lee
Summary: The study utilized the parabolic bay shape equation and shoreline change model to predict shoreline changes caused by offshore breakwaters, and verified the effectiveness of the model through application to satellite images.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Geography, Physical
Meghna Sengupta, Murray R. Ford, Paul S. Kench
Summary: With projections of accelerating sea-level rise and changing weather patterns due to anthropogenic climate change, the study analyzed shoreline changes on 104 coral reef islands in the western equatorial Pacific. The results showed that despite sea-level rise, accretion has been the predominant mode of shoreline change with some new islands formed while others eroded, revealing a dynamic geomorphic response of reef islands in this region.
Article
Engineering, Civil
Inaki de Santiago, Paula Camus, Manuel Gonzalez, Pedro Liria, Irati Epelde, Guillem Chust, Andrea del Campo, Ainhize Uriarte
Summary: The study revealed that the beaches along the Basque Coast are highly vulnerable to erosion due to climate change, with potential shoreline mean erosion ranging from 10-66 meters by the year 2100 under different scenarios. The response of each beach is highly variable, emphasizing the need for localized management strategies to mitigate the impact of coastal erosion.
COASTAL ENGINEERING
(2021)
Article
Marine & Freshwater Biology
Laura Lopez-Olmedilla, Luis Pedro Almeida, Salette Amaral de Figueiredo, Angela Fontan-Bouzas, Paulo A. Silva, Javier Alcantara-Carrio
Summary: This study aims to model the shoreline evolution for 2050 and 2100 in a sandy coastal stretch in northwest Portugal, considering different scenarios of sea-level rise and the influence of sediment budget on shoreline displacement.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Qin Ju, Tongqing Shen, Wenjie Zhao, Xingping Wang, Peng Jiang, Guoqing Wang, Yanli Liu, Qin Wang, Zhongbo Yu
Summary: This study discusses the maximum freeze depth of frozen ground in the source region of the Yellow River, including analysis of measured data, comparison of simulation models, and projection of future changes. The study finds that the maximum freeze depth of frozen ground in the source region of the Yellow River is decreasing, and the BP neural network model shows remarkable performance in predicting the freeze depth. Based on the projected results, the freeze depth of frozen ground in the source region of the Yellow River will continue to decrease in the future.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
S. Sreedevi, T. I. Eldho, T. Jayasankar
Summary: This study evaluates the impacts of land use/land cover and climate change on hydrology and soil erosion processes in a humid tropical region in India. Using the SHETRAN model, the researchers compare past land use maps and climate data with future climate scenarios. The results show that land use, climate variability, and combined effects have different influences on streamflow and sediment load. The projections from a general circulation model indicate an increase in temperature, precipitation, streamflow, and sediment load in the future. The SHETRAN model proves to be effective in assessing the impact of climate change on hydrology and sediment yield, providing valuable insights for future river basin management.
Article
Engineering, Civil
Nabil Al Aamery, James F. Fox, Tyler Mahoney
Summary: This study focused on forecasting sediment transport using global climate model ensembles and identified hydrologic modeling parameterization as the primary source of variance impacting forecasted sediment transport, surpassing the uncertainty from the selected global climate model realizations. Climate change impacts on sediment transport were mainly attributed to meteorological variables like precipitation and temperature, with underestimation observed when considering only these factors. Variance introduced by different global climate model ensembles had limited impact on forecasted streamflow and sediment yield, indicating the importance of researcher effort in designing ensemble models for robust results.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Min Chen, Zhen Qian, Niklas Boers, Anthony J. Jakeman, Albert J. Kettner, Martin Brandt, Mei-Po Kwan, Michael Batty, Wenwen Li, Rui Zhu, Wei Luo, Daniel P. Ames, C. Michael Barton, Susan M. Cuddy, Sujan Koirala, Fan Zhang, Carlo Ratti, Jian Liu, Teng Zhong, Junzhi Liu, Yongning Wen, Songshan Yue, Zhiyi Zhu, Zhixin Zhang, Zhuo Sun, Jian Lin, Zaiyang Ma, Yuanqing He, Kai Xu, Chunxiao Zhang, Hui Lin, Guonian Lue
Summary: Methods to integrate Earth system modelling with deep learning offer promise for advancing understanding of Earth processes. This Perspective explores the development and applications of hybrid Earth system modelling, a framework that integrates neural networks into ESM throughout the modelling lifecycle. Yet existing hybrid ESMs largely have deep neural networks incorporated only during the initial stage of model development.
NATURE REVIEWS EARTH & ENVIRONMENT
(2023)
Article
Environmental Sciences
Tong Li, Qiang Liao, Shuai Wang, Bojie Fu
Summary: Large lakes play crucial roles in hydrological processes and have significant ecological and economic functions. This study investigated the changes in runoff and sediment fluxes entering Qinghai Lake and Poyang Lake over the past 50 years. The results showed divergent trends in the two lake basins, with different patterns of streamflow and sediment transport changes. Climate change was found to be the dominant driver for the increase in water resources and sediment load in Qinghai Lake, while the reduction in sediment flux entering Poyang Lake was mainly attributed to human activities, such as reservoir construction and soil conservation practices.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Laura Kauppi, Norman Gobeler, Joanna Norkko, Alf Norkko, Alicia Romero-Ramirez, Guillaume Bernard
Summary: The increasing frequency and intensity of marine heatwaves (MHWs) have significant effects on the structure and functioning of ecological communities. This study found that short-term, strong MHWs can alter bioturbation and biogeochemical cycling of nutrients, leading to enhanced organic matter degradation, increased solute exchange, and sediment oxygen consumption. These changes highlight the system-wide impacts of even shorter-term, strong MHWs on ecosystem functioning.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Sara Savi, Anuschka Buter, Tobias Heckmann, Joshua Theule, Luca Mao, Francesco Comiti
Summary: This study used four high-resolution topographic surveys to analyze the spatial and temporal patterns of sediment transport in the proglacial area of the Sulden glacier. The results show that erosion and deposition generally have similar values in this area, indicating that it acts both as a sediment trap and source. The dynamics of the area are influenced by high temperatures, rapid glacier melt, and extreme precipitation events, impacting sediment connectivity and causing irregular pulses of sediment supply to downstream river channels.
Article
Engineering, Marine
Sean P. McGill, Brian D. Harris, Brian C. McFall, Douglas R. Krafft, Rachel L. Bain, Nicholas R. Olsen, Ian W. Conery, Monica A. Chasten
Summary: Nearshore nourishment is an effective coastal flood risk management technique that utilizes dredged sediment, as demonstrated by the Harvey Cedars project. It had positive impacts on coastal morphology and beach width, including material transport, shoreline migration, and onshore beach widening.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Kazimierz Banasik, Leszek Hejduk, Adam Krajewski, Michal Wasilewicz
Summary: The study compared the sediment deposited in a small reservoir in Poland with estimates of sediment yield from its catchment. Results showed a decreasing trend in sediment deposition in the reservoir over four different periods.
Article
Environmental Sciences
B. R. Rajasree, M. C. Deo
LAND DEGRADATION & DEVELOPMENT
(2018)
Article
Engineering, Civil
B. R. Rajasree, M. C. Deo
JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING
(2020)
Article
Environmental Sciences
Bharathan Radhamma Rajasree, Makarand Chintamani Deo
JOURNAL OF COASTAL RESEARCH
(2020)
Article
Meteorology & Atmospheric Sciences
B. R. Rajasree, Manasa Ranjan Behera, R. S. Kankara
Summary: This study examines the wind-wave climate data over a span of 41 years to analyze the characteristics and trends of wind-generated waves. The results indicate significant changes in wave activity at specific locations during different time periods, highlighting the importance of understanding and simulating wind-wave changes for effective coastal management, environmental impact assessments, and sustainable development.