📄 Category

earth_science

1482 papers

📄 earth_science

Hydrochemical Characteristics, Driving Mechanisms, and Water Transformation Relationships in Lake Chagan, Songnen Plain

This study elucidates the hydrochemical characteristics and water transformation pathways in Lake Chagan, revealing a complex cycle where precipitation infiltrates and interacts with rocks in shallow groundwater before undergoing evaporative concentration and ion exchange in the lake, ultimately contributing to river water through a process that decouples isotopic evaporation signals from baseflow-dominated hydrochemistry.

海超 贾, Jimin Huang, Hui Guo, Junpeng Chen, Liye Liu, Xiangpeng Lin, Jiangchao Liu, Jie Ma, Qiance Qiu, Hanmeng Li, Qingch (…)2026-07-09
📄 earth_science

Hydropower expansion in an already transformed tropical transition basin: cumulative pressures on Indigenous Lands in the Sangue River Basin, southern Amazon, Brazil

This study reveals that hydropower expansion in the Sangue River Basin of the southern Amazon is superimposed upon an already heavily transformed landscape, compounding cumulative socio-environmental pressures on Indigenous Lands and underscoring the critical need for basin-scale planning that accounts for historical land-use change rather than evaluating projects in isolation.

Douglas Bezerra Gonçalves¹2026-07-09
📄 earth_science

Dynamic and Non-Thermodynamic Processes Dominate Extreme Monsoon Rainfall Intensification at the Eastern Himalayan Margin

This study reveals that extreme monsoon rainfall intensification at the Eastern Himalayan margin is primarily driven by dynamic and non-thermodynamic processes rather than local thermodynamic scaling, highlighting the critical need to improve climate model representations of atmospheric circulation and topography to accurately project future rainfall extremes.

Laldinchhuaha Khiangte¹, Michelle Lalhruaizeli², Vishwambhar Prasad Sati¹, B. P. Mishra²2026-07-09
📄 earth_science

Output Growth Contribution to Environmental Degradation in Sub- Saharan Africa: Does Institutional Quality matter more than Green Technology?

This study of 40 Sub-Saharan African countries from 2000 to 2024 confirms an inverted-U-shaped Environmental Kuznets Curve and finds that while green technology directly reduces material footprint, strengthening institutional quality is more critical than technology alone for mitigating ecological footprint by moderating energy intensity.

Ademola Israel Adeniyi, Sunday Mauton Posu, David Tunji Eyinolorunshe2026-07-09
📄 earth_science

Contrasting Polynya Dynamics Regulating Antarctic Bottom Water Precursors in the Ross Sea

By integrating year-round Argo float data with satellite-derived polynya extent and atmospheric observations from 2021 to 2024, this study reveals that Antarctic Bottom Water formation in the Ross Sea is driven not just by polynya size and wind forcing, but by a seasonal decoupling where early-season openings efficiently accumulate salt while later efficiency declines, highlighting the critical interplay between atmospheric conditions and upper-ocean thermohaline structure.

Angela Garzia, Simone Di Palma, Lauro D'Esposito, Giuseppe Aulicino, Vincenzo Capozzi, Pasquale Castagno, Yuri Cotroneo (…)2026-07-09
📄 earth_science

Seasonal variability, geochemical control and probabilistic health risk assessment of high fluoride groundwater in the Gangetic floodplain of Eastern Uttar Pradesh

This study investigates the seasonal hydrogeochemical controls on high fluoride groundwater in Eastern Uttar Pradesh's Gangetic floodplain and employs deterministic and probabilistic risk assessments to reveal that infants face the highest non-carcinogenic health risks, driven primarily by fluoride concentration and ingestion rates.

Rohit Bhardwaj, Prasoon Kumar Dwivedi, Vipin Garg, Alok Kumar, Anand Kumar, Chander Kumar Singh2026-07-09
📄 earth_science

Current and Historic Levels of Persistent (PAHs, PCBs) and Emerging Pollutant (Nano-microplastics or NMPs) Body-Burdens in Oysters and Fish from an Urban-Industrialized Estuary

This study quantifies persistent (PAHs, PCBs) and emerging (nano-microplastics) pollutants in Galveston Bay oysters and fish, revealing that nano-microplastics exhibit body-burdens orders of magnitude higher than legacy contaminants, with oysters accumulating the highest concentrations and serving as a significant vector for human exposure.

Asif Mortuza, Bryan Gahn, Marcus Wharton, R. J. David Wells, Lene Petersen, Antonietta Quigg, Karl Kaiser, David Hala2026-07-09
📄 earth_science

Mutual Information assessment of the quality of the GRAV-D airborne gravity data and its compatibility with the NGS’ historical surface gravity database

This study demonstrates that Mutual Information serves as an effective diagnostic tool for assessing the internal consistency of GRAV-D airborne gravity data, evaluating its compatibility with historical surface and satellite datasets, and identifying the specific spectral contributions of airborne observations for future geoid modeling.

Jarir Saleh, Yan Ming Wang, Kevin M Ahlgren, Ryan A Hardy, Jeffery A Johnson2026-07-09
📄 earth_science

Validation of a Modified Normalized Mann-Whitney Fractal Dimension Method for characterizing Permo-Tiassic Khuff Carbonate Reservoirs, Saudi Arabia

This study validates that the modified normalized Mann–Whitney method provides an accurate and reliable approximation of pore-radius-derived fractal dimensions for characterizing Permo-Triassic Khuff carbonate reservoirs in Saudi Arabia, demonstrating near-perfect agreement with the established normalized pore-radius method.

Khalid Elyas Mohamed Elameen Alkhidir2026-07-09
📄 earth_science

Remote Sensing-Based Baseline Assessment of Reef Extent, Thermal Stress, and Anthropogenic Pressure in the Newly Designated Great Reef Protectorate, Red Sea, Egypt

This preprint establishes the first satellite-derived baseline for Egypt's newly designated Great Reef Protectorate by integrating Sentinel-2 mapping, a 41-year thermal stress reconstruction, and anthropogenic pressure assessments to characterize the reef's extent, record unprecedented 2024 heat stress, and confirm its oligotrophic conditions.

Michael Nagy Riad Kamel Abd AlMalk2026-07-09