Atlantic coast barrier-island shorelines are sinuous in plan view, with curvatures ranging in size from cusps to capes. The orientation of shoreline segments within the larger of these sinuous features (10 to 15 kilometers between apexes) is significantly related to shoreline dynamics.
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http://dx.doi.org/10.1126/science.197.4298.49 | DOI Listing |
Ground Water
December 2024
Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
Quantifying lacustrine groundwater discharge (LGD) is important for understanding the dynamics of lake ecosystems and their expansion. This study focuses on Lake Qinghai, employing radium isotope models to evaluate the contributions of both shallow and deep groundwater. The data indicate that the activity of Ra and Ra demonstrates a pronounced gradient, decreasing from the shoreline to the center of Lake Qinghai.
View Article and Find Full Text PDFEnviron Monit Assess
December 2024
School of Geomatics Science and Natural Resources, College of Built Environment, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia.
This study evaluates the effectiveness of unmanned aerial vehicles (UAVs) in monitoring coastal changes at Pantai Mengabang Telipot, Kuala Terengganu, Malaysia. Addressing the limitations of traditional monitoring methods, such as ground-based surveys and satellite imagery, the research underscores the critical need for timely and precise coastal monitoring using drone technology. The study employs a comprehensive four-phase methodology involving area identification, data acquisition through UAV imagery, data processing, and accuracy analysis.
View Article and Find Full Text PDFMicroplastics (MPs), less than 5 mm in length, have become a major environmental issue due to their hazardous physical and chemical properties. The research investigated 54 sediment samples collected from three different zones of the beaches, namely the wrack line, beach face, and swash zone. This study aims to enumerate the number and polymeric variety of microplastics found in beach sediments from coastal islands of Bangladesh, including Sandwip, Kutubdia, and Saint Martin's Island in the northeastern Bay of Bengal.
View Article and Find Full Text PDFSci Total Environ
December 2024
Mediterranean Institute for Advanced Studies (CSIC-UIB), Esporles 07190, Spain; School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.
Seagrass berms are a natural accumulation of seagrass leaves along the shoreline, which play an important role in coastal protection. Seagrass berms have been shown to reduce wave energy, helping to shield the coast from erosion. However, their protective role is debated in coastal management, where there are contrasting views on whether berms should be left in place or removed to improve beach aesthetics or accessibility.
View Article and Find Full Text PDFMar Pollut Bull
December 2024
Department of Earth Sciences, Faculty of Marine and Environmental Sciences, University of Cádiz, 11510 Puerto Real, Spain. Electronic address:
In December 2023, 25 tons of pellets were lost by the Toconao ship in the Northwest Atlantic Ocean in front of the Portuguese coast. In this work, a coastal stretch of 633 km in Asturias and Galicia (Spain) and Northern Portugal was investigated to assess pellets' concentration on 31 beaches. Field surveys were carried out in March 2024 and focused on sampling plastic pellets deposited along the shoreline.
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