📄 Category

earth_science

2455 papers

📄 earth science

Research Progress on Spontaneous Combustion Characteristics and Internal Influence Mechanism of Fractured Gas-bearing Coal Under Stress

This paper reviews the spontaneous combustion characteristics and internal mechanisms of fractured gas-bearing coal under stress, integrating macroscopic and microscopic analyses to elucidate the synergistic effects of stress and adsorbed gas, thereby addressing gaps in single-factor research and providing a theoretical basis for the collaborative prevention of compound gas and fire disasters in deep coal mining.

Rui Ru, Fuchao Tian, Yu Zhang, Kangteng Jia, Libin Wang, Wenbo Ding, Mingyi Chen, Yi Lu, Pengtao Zhao2026-08-10
📄 earth science

Rainwater harvesting for water security in Uzbekistan: a social-ecological systems analysis

This study employs a social-ecological systems framework to demonstrate that while rainwater harvesting is biophysically feasible and beneficial for agricultural sustainability in Uzbekistan, its low adoption stems primarily from institutional path dependence and resource constraints rather than technical limitations, necessitating policy reforms focused on land tenure, financial support, and extension services to scale the technology effectively.

Ugonna Oboke, Ahmad Hamidov, Akmal Akramkhanov, Dilfuza Egamberdieva, Sonoko Dorothea Bellingrath-Kimura2026-08-10
📄 earth science

Assessing Land Productivity Using Normalized Difference Vegetation Index and Key Environmental Drivers in Dewgain, Rural India

This study assesses land productivity in Dewgain, rural India, by integrating Sentinel-2 derived NDVI with climatic and soil data to reveal that while vegetation trends are non-significantly declining, rainfall and soil organic carbon are key drivers of productivity, with nearly half the area classified as low-productivity zones requiring sustainable management.

Demisie Ejigu, Raji Pushpalatha2026-08-10
📄 earth science

Permeability Evolution and Cross-Specimen Machine-Learning Prediction of Geothermal-Reservoir Sandstone under Coupled Temperature and Pressure

This study develops a robust machine-learning framework using nested specimen-grouped cross-validation to predict the path-dependent permeability of geothermal-reservoir sandstone under coupled temperature and pressure, identifying random forest as the optimal model and highlighting confining pressure as the most stable predictive factor while demonstrating incomplete permeability recovery after unloading.

Jibin He¹˒², Li Yu¹, Kun Zhao¹, Xiaoyan Niu¹2026-08-10
📄 earth science

Long-Term Migration of Plutonium and Americium in Soil: A Multi-Year Laboratory Lysimeter Study

This multi-year laboratory lysimeter study on German agricultural soil reveals that while americium exhibits negligible upward migration over five years, plutonium demonstrates significant capillary-driven movement toward the soil surface, challenging current radioecological models that often overlook this pathway.

Tim Schmalz, Lena Drieling, Nils Sassenberg, Simon Pottgießer, Beate Riebe, Clemens Walther2026-08-10
📄 earth science

Interannual Variability of Chlorophyll-a in the Southeastern Arabian Sea: Impacts of the Tropical Easterly Jet and Indian Ocean Dipole

This study utilizes 2003–2023 satellite and reanalysis data to demonstrate that the interannual variability of Chlorophyll-a in the Southeastern Arabian Sea during the summer monsoon is primarily driven by the combined effects of the Tropical Easterly Jet and Indian Ocean Dipole, which modulate local winds, upwelling dynamics, and coastal wave propagation to trigger anomalous phytoplankton blooms.

Prasanna Konatham, KanthaRao Bhimala, Krushna Chandra Gouda2026-08-10