📄 Category

earth_science

493 papers

📄 earth_science

Mobility risk and desorption irreversibility of glyphosate and aminomethylphosphonic acid in highly weathered tropical soils of Sri Lanka

This study characterizes the sorption-desorption hysteresis of glyphosate and its metabolite AMPA in Sri Lankan tropical soils, revealing that concentration-dependent irreversibility driven by inner-sphere complexation with iron and aluminum oxides significantly reduces mobility risk in acidic, mineral-rich soils while highlighting high risks in alkaline, sandy soils through the introduction of novel risk indices.

Dissanayake Arachchilage Thanuja Warnaka Kumari Dissanayake, Pathmasiri Ranasinghe, Mohamed Naeem Ahammadu Mubarak, Sara (…)2026-07-15
📄 earth_science

Municipal protected areas and hydropower development in a free-flowing river of the Pantanal: parallel governance processes in the Cabaçal River Basin, Brazil

This study examines how municipal Natural Monument protected areas in Brazil's Cabaçal River Basin coexist with ongoing hydropower governance processes, revealing that while both municipalities adopted the same conservation category, they implemented distinct strategies ranging from explicit legal prohibitions to broader management-based approaches within an institutional landscape already shaped by energy development.

Douglas Gonçalves2026-07-15✓ Author reviewed ⓘ
📄 earth_science

Divergent Runoff Responses to 1.5°C, 2.0°C, and 3.0°C Warming Across Headwater and Downstream Regions of the Indus River Basin

This study reveals a stark hydroclimatic divergence in the Indus River Basin under 1.5°C to 3.0°C warming, where headwater runoff significantly increases due to snowmelt while downstream regions face deepening water deficits, posing critical risks to irrigation, food security, and adaptation planning.

Zhijie Zhang, Zahoor Ahmad, Wanchang Zhang2026-07-15
📄 earth_science

Satellite-Based Assessment of Vegetation Water Stress Across West Africa Using Evapotranspiration Limitation and Independent Rainfall Evaluation from 2001 to 2023

This study presents a scalable, satellite-based framework for monitoring crop water stress across West Africa from 2001 to 2023, demonstrating that a parsimonious evapotranspiration limitation index (1 − ET/PET) outperforms temperature-based and vegetation-enhanced metrics in correlating with independent rainfall anomalies and effectively capturing the region's strong north-south moisture gradient.

George Owus Amoah2026-07-15
📄 earth_science

Helium migration pattern in ultra-deep marine strata: A case study of the Sinian– Cambrian reservoirs in the Anyue gas field

This study utilizes noble gas isotope analysis of 23 samples to reveal that crustal-derived helium enrichment in the Anyue gas field's Sinian–Cambrian reservoirs is quantitatively controlled by basement groundwater circulation, where efficient migration in the Sinian contrasts with the Cambrian's poor fault connectivity and overpressure that hindered helium accumulation.

Jiamei Wang, Shengfei Qin, Fenghua Zhao, Yuchong Wang, Hongyi Gao, Hanqian Ou2026-07-15
📄 earth_science

Mechanistic analysis of the performance of earthen sites improved by combined enzyme-induced calcium carbonate precipitation–tung oil modification

This study demonstrates that combining enzyme-induced calcium carbonate precipitation with tung oil modification significantly enhances the mechanical strength, hydrophobicity, and vapor permeability of earthen site soils, with an optimal mixture of 80 g/L soybean powder, 0.75 mol/L cementation solution, and 5% tung oil achieving a 158% increase in unconfined compressive strength while maintaining visual compatibility.

Jianwei Zhang, Zonghao Guo, Hongliang Jiang, Peikun Wang, Jianxin Li, Kebin Ren2026-07-15
📄 earth_science

Integrating rockfall susceptibility, road forensics, and trajectory simulations to quantify hazard along an Alpine corridor

This study integrates a field inventory of road impacts, kinematic source susceptibility, and numerical trajectory simulations to develop a calibrated framework that accurately quantifies and maps rockfall hazards along an Alpine transport corridor.

Tiggi Choanji, Michel Jaboyedoff, François Noël, Antonin Chale, Li Fei, Chunwei Sun, Marc-Henri Derron2026-07-15
📄 earth_science

Urban floods disrupt healthcare before, during, and after peak flooding

This paper introduces a spatio-temporal framework applied to Rotterdam that reveals urban flood disruptions to healthcare follow a distinct timeline from flood extent, necessitating equitable continuity of care strategies across pre-flood, peak, and recovery phases rather than relying solely on maximum flood depth maps.

Mikhail Sirenko, Tina Comes, Yared Abebe, Nikola Stanić, Koen Tromp, Carlo Sobral de Vito, Tije Bakker, Farhan Meke, Kev (…)2026-07-15
📄 earth_science

Thaw-induced degradation as a driver of methane emissions from low-Arctic polygonal peatlands in the Western Siberian Lowland

This study quantifies methane emissions from degrading low-Arctic polygonal peatlands in the Western Siberian Lowland, revealing that water-saturated hollows are the primary source and estimating that these ecosystems contribute significantly (31.1–45.7 kt CH₄ yr⁻¹) to the region's total tundra methane budget.

Arina V. Larina, Nikita B. Ustinov, Georgiy O. Gavrilov, Vladimir S. Kazantsev, Andrey E. Belov, Elena A. Tsvetnova, Ann (…)2026-07-15
📄 earth_science

Biotic Constraints and Hydroperiod Drivers of Mangrove–Saltmarsh Zonation in a Microtidal Estuary

This study demonstrates that while hydroperiod and microtopography are primary drivers of mangrove–saltmarsh zonation in a microtidal estuary, strong competitive exclusion between *Avicennia marina* and saltmarsh species further constrains their distribution, suggesting that biotic interactions play a critical role in shaping future coastal wetland transitions under sea-level rise.

LI WEN, Tanya Mason, Michael Hughes2026-07-15