📄 Category

earth_science

2485 papers

📄 earth science

Composition and molecular transformation mechanisms of dissolved organic matter in the Huai River (Anhui Section)

This study elucidates the spatiotemporal heterogeneity and molecular transformation mechanisms of dissolved organic matter in the Anhui section of the Huai River using 3D-EEMs-PARAFAC and FT-ICR MS, revealing seasonal shifts from autochthonous tryptophan-like substances to refractory humic compounds and identifying specific molecular pathways that inform water treatment optimization and risk mitigation.

Ruoxin Yin, Liangmin Gao, Yanjun Liu, Xiaoqing Chen, Xiaoli Kai, Jinxiang Yang, Haoran Sun2026-07-07
📄 earth science

Temporal Toxicity Dynamics and Safe Exposure Thresholds of Fixed-Ratio Cadmium Chloride–Glyphosate Potassium Binary Mixtures in Sub-Adult Clarias gariepinus

This study demonstrates that the acute toxicity of fixed-ratio cadmium chloride–glyphosate potassium binary mixtures in sub-adult African catfish (*Clarias gariepinus*) increases significantly with exposure duration, resulting in a 96-hour LC₅₀ of 28.100 mg/L and establishing preliminary safe exposure thresholds of 2.81 mg/L and 0.28 mg/L to inform environmental risk assessments.

Kenneth Igbang Sunday, Nsa Akiba Ayi2026-07-07
📄 earth science

Global Policy Analysis: Aligning PM2.5 Reductions with Sustained Air Quality and Health Benefits

This study analyzes global PM2.5 trends and health outcomes to demonstrate that while emission reductions are necessary, sustained public health benefits require integrating health assessments with air quality management and adopting adaptive, equity-oriented policies, as evidenced by divergent results in Europe, China, and developing nations.

Steve H.L. Yim, Gajapriya Gajapathi, Yue Li, Christine Cheung, Tingting Fang, Frank Kelly, Thomas Y.T. Lam, Victor Chee (…)2026-07-07
📄 earth science

Centennial transitions in woody debris recruitment during rainfall-induced disasters in Japan: Evidence of evolving human–natural systems

This study analyzes 49 rainfall-induced disasters in Japan from 1931 to 2025 to reveal that woody debris recruitment sources have shifted from a mix of natural wood, disaster waste, and anthropogenic wood to a predominance of natural wood since the 1960s, demonstrating that debris dynamics are driven by evolving human–natural systems rather than fluvial processes alone.

Tadamichi Sato2026-07-07
📄 earth science

Analyzing Public Sentiments on Environmental Noise Pollution Using Social Media Data

This study introduces a computational framework leveraging large-scale social media data and optimized BERT models to analyze public sentiment on environmental noise pollution, revealing that road traffic and construction are primary irritants causing widespread negative sentiment and sleep disruption, thereby offering a real-time, cost-effective tool for urban noise mitigation and policy design.

Ibrahim Ali Mohammed, Mukhtar Dahiru, Sunusi Hudu2026-07-07
📄 earth science

Strengthening Sustainable Clean Water Supply through Governance Synthesis: A Mini Literature Review on Informality, Institutional Capacity, and Infrastructure Monitoring

This mini literature review synthesizes evidence from twenty-one studies to argue that achieving sustainable clean water supply requires integrating formal engineering solutions with locally legitimate institutional arrangements, recognizing informal water systems as adaptive responses to state incapacity and emphasizing that the success of community-managed systems relies on organizational structure and participation rather than technology alone.

Mochamad Irfan Ramadani, Moses Glorino Rumambo Pandin2026-07-07
📄 earth science

Strengthening Water Security through Technical Innovation, Informal Institutions, and Local Governance Capacity: A Mini Literature Review

This mini literature review synthesizes twenty-one studies to argue that achieving sustainable water security requires the deliberate integration of advanced technical diagnostic tools, the recognition of informal institutional arrangements, and the strengthening of local government capacity, proposing a unified framework to bridge these previously separate scholarly strands.

Mochamad Irfan Ramadani, Moses Glorino Rumambo Pandin2026-07-07
📄 earth science

Self-Arresting Earthquakes Require Event-Specific k-values: A Physics-Informed Deep Learning Framework

By analyzing dynamic rupture simulations and natural earthquakes, this study demonstrates that self-arresting earthquakes require event-specific k-values rather than universal constants, leading to a physics-informed deep learning framework that significantly reduces stress drop estimation biases and reveals rupture mode diversity as the fundamental control on spectral characteristics.

Tao Mo, Jiankuan Xu, Xiaofei Chen2026-07-07
📄 earth science

From Rigid Failure to Adaptive Resilience: A Replicable Analytic-Hierarchy Framework for Selecting Debris-Flow Retaining Structures in Andean-Coastal Gullies of Peru The Case of El Pedregal Gully, Chosica

This paper proposes and validates a reproducible Analytic Hierarchy Process (AHP) framework that, by integrating site-specific dynamics with multi-criteria decision-making, identifies a hybrid system of gabion and MSE walls as the superior alternative to traditional rigid concrete structures for mitigating debris-flow hazards in Andean-coastal gullies like El Pedregal, Peru.

PAUL RICARDO PRUDENCIO GALVEZ2026-07-07