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Assessing microplastic pollution in a river basin: A multidisciplinary study on circularity, sustainability, and socio-economic impacts.
Environ Res
December 2024
Department of Geodetic and Geographic Information Technologies, Middle East Technical University, Üniversiteliler Street, 06800, Ankara, Türkiye; Department of Civil Engineering, Üniversiteliler Street, 06800, Ankara, Türkiye Ankara, Türkiye.
Plastic pollution has emerged as a significant environmental challenge worldwide, posing serious threats to ecosystems and human health. This study seeks to explore the interplay among circularity, sustainability, and the release of microplastics within the freshwater ecosystems situated along the western Black Sea coast- Düzce, Türkiye. Employing a multidisciplinary approach that integrates environmental science, economics, and policy analysis, the research examines the current state of plastic pollution in the region, considering diverse land uses and socio-economic lifestyles.
View Article and Find Full Text PDFNon-linear ground deformation detection and monitoring using time series InSAR along the coastal urban areas of Pakistan.
Environ Sci Pollut Res Int
August 2024
Dipartimento Di Ingegneria, Università Degli Studi Di Napoli Parthenope, 80133, Naples, Italy.
Conventional geodetic methods rely on point measurements, which have drawbacks for detecting and tracking geologic disasters at specific locations. In this study, the time series Interferometric Synthetic Aperture Radar (InSAR) approach was incorporated to estimate non-linear surface deformation caused by tectonic, shoreline reclamation, and other anthropogenic activities in economically important urban regions of Pakistan's southern coast, which possesses around 270 km. The shoreline is extended from the low-populated area on the premises of the Hub River in the west to the highly populated Karachi City and Eastern Industrial Zone, where we collected the Sentinel-1A C-band data from 2017 to 2023 to address urban security and threats to human life and property.
View Article and Find Full Text PDFSlow rupture in a fluid-rich fault zone initiated the 2024 7.5 Noto earthquake.
Science
August 2024
Earth Observatory of Singapore, Nanyang Technological University, Singapore.
Article Synopsis
- - The 2024 Noto Peninsula earthquake in Japan, measuring 7.5 in magnitude, caused significant damage due to a complex rupture process and resulted in a peak ground uplift of 5 meters on the west coast.
- - Observations revealed that there was over 10 meters of shallow slip on an offshore fault, with a peak stress drop exceeding 10 megapascals during the event.
- - The quake began with a slow rupture lasting 15 to 20 seconds near the hypocenter, coinciding with an increase in seismic activity since 2020, indicating a unique slip mode influenced by fluid dynamics in the fault zone.
Advancing coastal resilience: Coastal vulnerability assessment using cutting-edge space geodetic and optical imaging techniques.
iScience
June 2024
Geospatial Imaging and Information Research Group (GI2RG), Faculty of Built Environment and Surveying, Universiti Teknologi Malaysia, Johor Bahru, Johor, Malaysia.
Space geodetic and optical imaging techniques are employed to assess the coastal vulnerability index (CVI) in order to adapt to the contemporary approach to coastal classification. Satellite altimeter, Satellite Pour l'Observation de la Terre (SPOT) and integrated multi-satellite retrievals for GPM (IMERG) were among the satellite data used. The variables were deemed adequate based on the spatiotemporal estimates, then were quantified through expert-weighted scores and integrated into a single index over the Terengganu coastal area.
View Article and Find Full Text PDFQuantitative identification of causes of instrumental acoustic signal distortion in Global Navigation Satellite System-Acoustics Combination observations.
J Acoust Soc Am
April 2024
Institute of Industrial Science, University of Tokyo, Tokyo 1538505, Japan.
Article Synopsis
- The Seafloor Geodetic Observation-Array (SGO-A) uses a combination of satellite positioning and underwater acoustic systems to measure seafloor movement, crucial for earthquake disaster prevention.
- Recently, issues with distortion in the SGO-A's 10-kHz carrier wave were identified, affecting measurement accuracy by several centimeters.
- The study highlights that this distortion stems from both hardware and internal electrical circuit problems, advocating for improved signal processing techniques, including experimental waveform identification, for better accuracy in GNSS-A systems.
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