📄 Category

earth_science

2485 papers

📄 earth science

Quantifying Multiscale Heterogeneity in Persian Gulf Carbonate Reservoirs: Linking Microfacies, Rock Types and Statistical Heterogeneity Indicators

This study presents an integrated multiscale framework linking petrographic, electrofacies, and rock-typing data with statistical and geostatistical indicators to demonstrate that effective reservoir connectivity in Persian Gulf carbonates is defined not by low heterogeneity alone, but by a specific combination of systematic heterogeneity, high spatial continuity, and minimal porosity separation, thereby distinguishing productive flow units from non-reservoir zones dominated by anhydrite cementation.

Adeleh Jamalian, Ali Kadkhodaie Ilkhchi2026-07-30
📄 earth science

The impact of data missingness mechanisms and degradation levels on rainfall agroclimatic data analyses

This study utilizes Monte Carlo simulations to demonstrate that missing not at random (MNAR) mechanisms and higher missingness volumes (up to 20%) significantly bias agroclimatic rainfall indices, with Maximum Consecutive Dry Days (CDD) proving most sensitive and dry regions least affected compared to wetter areas.

Tinetariro Wesley Chikati, Moven Manjowe, Tapiwa Michelle Masawi2026-07-30
📄 earth science

Assessing Low-Carbon Steel Pathways in Europe: A Spatially and Temporally Explicit TEA-LCA Framework

This study presents a spatially and temporally explicit techno-economic and life-cycle assessment framework revealing that while conventional blast furnace steelmaking remains the most cost-effective option today, hydrogen-based direct reduced iron with biochar integration offers the lowest emissions by 2050, though no single low-carbon pathway dominates across Europe due to significant regional variations in resource availability and costs.

Johannes Kern, Carsten Gondrf, Ali Abdelshafy, Grit Walther2026-07-30
📄 earth science

Spatial representativeness of total column ozone monitoring in Reykjavik, Iceland, and its regional significance in the North Atlantic region

This study validates the spatial representativeness of the new Reykjavik Brewer spectrophotometer for monitoring total column ozone, demonstrating its ability to capture major regional patterns in the North Atlantic and effectively fill the observational gap between Greenland and Scandinavia.

Klára Čížková, Kamil Láska, David Tichopád, Martin Staněk, Sibylle Löwis, Ladislav Metelka, Martin Stráník2026-07-30
📄 earth science

Resprouters quickly rebuild fuel in Cerrado grassland, even when it occurs as an enclave within the Caatinga

This study demonstrates that Cerrado grassland enclaves within the Caatinga biome exhibit high resilience to fire, characterized by rapid biomass consumption followed by a quick recovery driven by seedling pulses and resprouting plants, thereby supporting the ecological role of fire and informing future fuel management strategies.

Abel Augusto Conceição, Graziela Araújo Lima2026-07-30
📄 earth science

Seasonal occurrence and removal of artificial sweeteners in wastewater from five treatment plants in Tshwane, South Africa

This study analyzed the seasonal occurrence and incomplete removal of four artificial sweeteners across five wastewater treatment plants in Tshwane, South Africa, revealing their persistence in effluents and highlighting the need for enhanced monitoring and treatment technologies.

Mothabi E. Makaleng, Nompumelelo R. Sibanyoni, Thabo Nkambule, Dineo E. Moema, Illunga Kamika2026-07-30
📄 earth science

Local and regional drivers of standing-water metacommunities on a riverine island

This study demonstrates that standing-water metacommunities on a European riverine island are primarily structured by local environmental conditions and regional species pools rather than spatial configuration alone, revealing that molluscs serve as better indicators of hydrological connectivity while zooplankton reflect regional dispersal dynamics.

Igor Kokavec, Marta Illýová, Tomáš Čejka2026-07-30
📄 earth science

From diversity patterns to assembly processes: plankton community assembly along a natural salinity gradient in northern plateau lakes of China

This study reveals that increasing salinity along a natural gradient in northern Chinese plateau lakes drives a linear decline in plankton taxonomic diversity and functional richness, shifts community assembly from deterministic environmental filtering in freshwater to greater stochasticity in brackish waters, and partially decouples biodiversity from ecosystem functioning under salinity stress.

Yi Zhang, Wenjie Liu, Jinrui Zhang, Zhendong Wu, Pan Hu, Yongli Tian, Xinliang Zhao, Hao Li, Juanjuan Qi, Rui Wang, Xuwa (…)2026-07-30
📄 earth science

Spatiotemporal Assessment of Ambient Air Quality in Selected Urban, Tourist and Industrial Regions of Himachal Pradesh, India: A Case Study

This case study utilizes 30 days of public monitoring data from June to July 2026 to demonstrate that Himachal Pradesh's industrial and urban centers (Baddi and Solan) experience significantly higher air pollution levels driven primarily by particulate matter compared to tourist hill towns, establishing a critical baseline for differentiated air quality management across these distinct land-use settings.

OM RAJ, Indramani Dhada2026-07-30