📄 Category

earth_science

1371 papers

📄 earth_science

Spatiotemporal dynamics and driving mechanisms of carbon emissions from China’s expressway operations

This study presents a nationwide, high-resolution analysis of China's 2024 expressway operational CO₂ emissions, revealing that emissions are heavily concentrated on major trunk corridors and exhibit significant monthly fluctuations driven by congestion-induced speed reductions, thereby highlighting the critical need for fine-scale temporal data to inform effective transport decarbonization strategies.

Panyue Zhang, zhuohan liu, yajie Zhang, guangming zhang2026-09-01
📄 earth_science

Magnetic Signatures and Geochemical Fingerprints of Heavy-Mineral Black Sands Along the Bayelsa Coast, Niger Delta

This study integrates aeromagnetic, geological, and geochemical data to identify a heavy-mineral placer system along the Bayelsa coast of the Niger Delta, characterized by shallow magnetic anomalies and a distinct Zr–Ti–Fe geochemical signature, while recommending further investigation to fully assess its economic potential.

Francis Omonefe, Edeye Ejaita, Christopher Unyime Ebong2026-09-01
📄 earth_science

Temporal-scale-dependent regulation of ecosystem carbon exchange by meteorological and hydrological drivers in a small riverine wetland of the middle Yellow River

This study utilizes one year of eddy covariance data from the Sanhekou wetland in the middle Yellow River to demonstrate that meteorological and hydrological drivers regulate ecosystem carbon exchange through distinct linear and nonlinear mechanisms that vary significantly across temporal scales, ultimately confirming the wetland's role as a seasonal carbon sink.

Jingru Zhang, Lin Liu, Xiaohuang Liu, Dongdong Wang, Shikai Fan, Hailong Zhao, Bo Wang, Zhicai Guo, Zhiping Luo2026-09-01
📄 earth_science

Revealing Stratosphere-Troposphere Interactions via Regime-Based Transfer Entropy

This paper introduces a regime-based Transfer Entropy framework that overcomes the curse of dimensionality in high-dimensional atmospheric systems to reveal complex, state-dependent, and non-linear causal couplings between the stratosphere and troposphere, including distinct memory timescales and a multi-week positive feedback loop.

Dmitry Mukhin, Roman Samoilov, Abdel Hannachi, Alexander Feigin2026-09-01
📄 earth_science

Historical Baseline Assessment of Coastal Pollution in Bou Ismaïl Bay (Algeria) Using a Multi- Compartment Biomonitoring Approach

This study establishes a historical baseline for Bou Ismaïl Bay, revealing that varying levels of anthropogenic pressure have caused severe eutrophication, fecal contamination, and trace element accumulation, leading to the significant degradation of *Posidonia oceanica* meadows and highlighting the urgent need for improved wastewater management in the region.

Rachida GHALMI, Fateh TARMOUL, Juba CHABANE2026-09-01
📄 earth_science

The Atlantic–Far East Asia (AFEA) Rossby–gravity waveguide revealed by a global constellation of geostationary satellites

This study utilizes a global constellation of geostationary satellites to identify and characterize the Atlantic–Far East Asia (AFEA) Rossby–gravity waveguide, a transcontinental atmospheric corridor that facilitates hemispheric-scale energy propagation and long-range connections between tropical and extratropical regions.

Kenji Tanaka, Taichi Murakami, Katsumasa Takahashi2026-09-01