Article
Environmental Sciences
Yizhan Zhao, Lv Zhou, Cheng Wang, Jiahao Li, Jie Qin, Haiquan Sheng, Liangke Huang, Xin Li
Summary: This article investigates the land subsidence situation in Wuhan and finds that it is unevenly distributed and related to building intensity. The most severe subsidence occurs near Qingling in Hongshan District, which is associated with subway and building construction. Seasonal changes and rainfall are found to affect land subsidence, while the change in the water level of the Yangtze River has a small overall impact. An obvious uplift is observed in Caidian District, possibly due to the expansion effects of expansive clay.
Article
Environmental Sciences
Alejandro Casallas, Maria Paula Castillo-Camacho, Marco Andres Guevara-Luna, Yuri Gonzalez, Edwin Sanchez, Luis Carlos Belalcazar
Summary: This paper analyzes the spatio-temporal variations and exceedances of PM2.5 concentrations in Northwestern South America, assessing the effectiveness of implemented policies and identifying the causes of high PM2.5 levels. Wildfires and local emissions were found to be the main contributors to high PM2.5 levels in most cities. While cities generally complied with local regulations, they did not meet WHO guidelines, highlighting the need for stricter limits. The study also identified daily variations in PM2.5 concentrations and different trends in annual concentrations among cities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Meteorology & Atmospheric Sciences
Maria Paula Llano, Walter Vargas
Summary: This study aims to contribute to the knowledge of daily rainfall in southeastern South America by calculating the concentration index (CI) using daily records of precipitation for 48 stations. The spatial and temporal distribution of CI provides information about frequency and changes in heavy rainfall days, showing different regional behavior. In Brazil, there is an increase in CI, while negative trends are present in Uruguay and the north-central part of Argentina in all four seasons.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Geochemistry & Geophysics
Roland Freisleben, Julius Jara-Munoz, Daniel Melnick, Diego Molina, Andres Tassara, Peter van der Beek, Manfred R. Strecker
Summary: This study investigates the mechanisms driving permanent coastal uplift in the tectonically active South American margin. By analyzing uplifted marine terraces and tectonic parameters, the researchers identify a constant background-uplift rate along the margin, perturbed by changes at variable wavelengths. The study suggests that major, deep earthquakes near the Moho are responsible for the moderate, long-term background uplift, while accumulation of permanent deformation over millennial time scales occurs through multiple, distinct uplift phases. The findings highlight the utility of a signal-analysis approach in understanding surface deformation in subduction zones at a continental scale.
Article
Geography, Physical
Iuri Gorenstein, Luciana F. Prado, Paula R. Bianchini, Ilana Wainer, Michael L. Grif, Francesco S. R. Pausata, Elder Yokoyama
Summary: This article presents a climate reconstruction for eastern South America during the mid-Holocene, using calibrated age models and a multiproxy approach. The study shows reduced rainfall in the Amazon and a warmer and drier climate in southern South America during this period. It also indicates a weakening of the South American Summer Monsoon and local erratic rainfall patterns in certain areas.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Zhongxian Zhao, Zhen Sun, Xiaoxi Zhu, Penggao Fang, Jie Liao, Liheng Sun, Zhe Zhang
Summary: The complex subduction system surrounding the South China Sea region has driven mantle upwelling, which has had significant effects on basin subsidence, rifting, and magmatism. By analyzing seismic interpretation, strain rate calculation, and subsidence analysis, this study has identified two stages of extension and varying strain rates in the northwest margin of the South China Sea during the syn-rifting period. The analysis also revealed the initiation and decay of mantle upwelling and its spatial variations, providing insights into the dynamics of the region.
Article
Environmental Sciences
Shailaja Wasti, Yuxuan Wang
Summary: This study investigates the impact of drought on HCHO concentration in South Korea and finds that drought leads to an increase in HCHO, which is correlated with the vegetation percentage of the region.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Meteorology & Atmospheric Sciences
Joao Paulo Lyra Fialho Breda, Rodrigo Cauduro Dias de Paiva, Sin Chan Chou, Walter Collischonn
Summary: The Eta RCM model underestimates extreme precipitation in South America and this bias decreases with temporal and spatial aggregation. These precipitation biases also affect river streamflow simulations, especially in small basins.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Engineering, Mechanical
Yanbo Hu, Wenping Li, Xinmin Chen, Hongzhong Xu, Shiliang Liu
Summary: This study used mathematical model analysis and BOTDRT technology to monitor the microstrain of floor rock in deep coal seam mining, revealing the mechanism and law of floor failure. The study provides a basis for the prevention and control of high confined water hazard of limestone in deep seam mining.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Geosciences, Multidisciplinary
Xudong Zhao, Huiping Zhang, Richard O. Lease, Ying Wang, Jianzhang Pang, Yifei Li, Ping Wang, Jiawei Zhang, Hao Xie, Yizhou Wang, Yaling Tao, Zifa Ma, Jianguo Xiong, Peizhen Zhang
Summary: The study of the Ninglang Basin reveals that a south-flowing drainage system existed around 45 million years ago, indicating early surface uplift in the eastern Tibetan Plateau. The research supports that the high topography of eastern Tibet was established in the late Eocene.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Green & Sustainable Science & Technology
Shengfang Lu, Jingzheng Ren, Long Zhang, Carman K. M. Lee
Summary: This paper comprehensively assesses the energy poverty performance of 30 provinces in China over an 11-year period. It reveals that while energy poverty conditions tend to be similar across regions, the disparity between the best and worst performers is increasing. Provinces with better economic conditions perform better in alleviating energy poverty, while those with lagging economies regress the most.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Geology
Yin Gong, Victoria Pease, Hua Wang, Huajun Gan, Entao Liu, Qinlin Ma, Shiyu Zhao, Jie He
Summary: Investigating the Beibuwan Basin in the South China Sea has shown that its provenance underwent significant changes during the lower Oligocene, indicating the influence of evolving topography and drainage evolution on sediment sources in rift basins.
SEDIMENTARY GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Simone Racano, Taylor F. Schildgen, Domenico Cosentino, Scott R. Miller
Summary: In geodynamically active areas, variations in rock uplift can be studied through quantitative analysis of river profiles, providing insights into the evolution of topography. Factors such as rock-uplift rate, erodibility of underlying rock, and climate affect fluvial landscapes, and river profiles can be inverted to determine the rock-uplift histories that created them. This study demonstrates how the spatio-temporal rock-uplift history of the CAP southern margin can be defined through analysis of river profiles.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Green & Sustainable Science & Technology
Martina Baborowski, Holger Rupp, Katrin Wendt-Potthoff, Nadine Tauchnitz, Ralph Meissner
Summary: The study on metal content in drainage water under conventional agricultural management found relatively low concentrations, mainly affected by soil erosion.
CLEAN-SOIL AIR WATER
(2021)
Article
Multidisciplinary Sciences
Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschutz, Everton Wilner, Ricardo Tadeu Lopes, Olga Maria Oliveira de Araujo, Alexander Wilhelm Armin Kellner
Summary: The discovery of a new toothless ceratosaur in Brazil challenges previous assumptions about the diets of these dinosaurs, suggesting a potential herbivorous or omnivorous lifestyle and highlighting the diversity within the Ceratosauria lineage.
SCIENTIFIC REPORTS
(2021)
Article
Geosciences, Multidisciplinary
S. A. Alqahtani, R. E. Ll Collier, D. A. Paton, G. G. Roberts, C. P. B. O'Malley
Summary: This study estimates the uplift history along the northeastern Red Sea onshore margin using drainage analysis and stream profile inverse modeling. The results reveal that early rift uplift was likely driven by faulting and possible mantle support, while later uplift was influenced by fault linkage, mantle upwelling, and transform tectonics.
JOURNAL OF AFRICAN EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Fred D. Richards, Mark J. Hoggard, Sia Ghelichkhan, Paula Koelemeijer, Harriet C. P. Lau
Summary: This study addresses the vertical extent and composition of large low-velocity provinces (LLVPs) in the deep mantle using a comprehensive range of geophysical observations. The research suggests that the density anomalies of LLVPs extend vertically to approximately 900 km above the core-mantle boundary (CMB), primarily driven by thermal effects but with a possible dense basal layer containing early-formed chondrite-enriched basalt. These findings have significant implications for understanding mantle plume generation and Earth's supercontinent cycles.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geochemistry & Geophysics
Andrew Hollyday, Jacqueline Austermann, Andrew Lloyd, Mark Hoggard, Fred Richards, Alessio Rovere
Summary: Paleoshorelines are influenced by solid Earth deformation, including glacial isostatic adjustment (GIA) and mantle dynamic topography (DT), making them useful for measuring ancient sea levels and ice volumes. In Argentina, the present-day elevations of three early Pliocene paleoshorelines reflect a unique topographic deformation signature. Using a mantle convection model, scientists were able to identify the most likely convection parameters and DT change by comparing predictions of DT change to GIA-corrected shoreline elevations. The estimated global mean sea level in the early Pliocene Epoch confirms that sea level was significantly higher than present and can be used to calibrate ice sheet models.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Geochemistry & Geophysics
David L. L. Huston, David C. C. Champion, Karol Czarnota, Jingming Duan, Matthew Hutchens, Suzanne Paradis, Mark Hoggard, Bryant Ware, George M. M. Gibson, Michael P. P. Doublier, Karen Kelley, Anne McCafferty, Nathan Hayward, Fred Richards, Svetlana Tessalina, Graham Carr
Summary: The North Australian Zinc Belt and the Northern Cordillera in North America are the largest zinc-lead provinces in the world. Despite the vast resources, exploration in the past two decades has been relatively unsuccessful. This study presents new exploration criteria using previously unused datasets, including lead isotope mapping, geophysical data, and indicators of paleoenvironment and plate motion, to identify prospective mineralized basins and define the most favorable parts.
MINERALIUM DEPOSITA
(2023)
Article
Geosciences, Multidisciplinary
Ikenna C. C. Okwara, Gary J. J. Hampson, Alexander C. C. Whittaker, Gareth G. G. Roberts, Patrick W. W. Ball
Summary: Sediment mass-balance analysis is important for understanding stratigraphic architecture and controls. The study focused on the Middle Jurassic Brent Delta sediment routing system in the Northern North Sea and estimated sediment budgets and mass-balance between source areas and depositional sinks.
Article
Ecology
Conor P. B. O'Malley, Gareth G. G. Roberts, Philip D. D. Mannion, Jan Hackel, Yanghua Wang
Summary: Understanding the connection between environment and biodiversity is crucial for conservation and predicting population responses. In this study, scales and locations where biodiversity is generated and correlates with environment were identified. Results showed that most species richness is generated at large scales and is influenced by topography, precipitation, and temperature.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2023)
Article
Geochemistry & Geophysics
Jonas Eschenfelder, Alex G. Lipp, Gareth G. Roberts
Summary: High concentrations of heavy metals and other pollutants in river sediments can have detrimental effects on the ecosystem and humans. River sediment compositions provide important information for environmental monitoring. This study presents a new strategy for mapping element concentrations along rivers and demonstrates it in a case study of the Clyde drainage basin in Scotland.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Article
Geochemistry & Geophysics
Alex G. Lipp, Patrice de Caritat, Gareth G. Roberts
Summary: This study demonstrates a technique of numerically unmixing alluvial sediments to create a geochemical map of their upstream catchments.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Article
Geochemistry & Geophysics
P. W. Ball, G. G. Roberts, D. F. Mark, D. N. Barfod, N. J. White, B. H. Lodhia, M. M. Nahdi, S. Garni
Summary: Harrat Rahat is the largest volcanic field in Saudi Arabia and has been active from around 10 Ma to the present day. Recent eruptions at Harrat Rahat have been extensively studied, but the evolution of its oldest lava flows, known as the Shawahit Basalt, is poorly understood. In this study, we collected and analyzed samples from Harrat Rahat, focusing on the Shawahit unit. We found that the volcanic activity at Harrat Rahat was initiated by a mantle plume beneath a thinned lithosphere, and the changes in geochemistry can be attributed to a decrease in melt productivity and contamination.
Article
Geosciences, Multidisciplinary
S. S. Husein, A. Fraser, G. G. Roberts, R. Bell
Summary: The use of new seismic reflection and well data has allowed us to map the stratigraphy of the Carboniferous to Neogene and analyze the potential hydrocarbon resources in the region more effectively. The improved seismic imaging has provided better understanding of salt-related structures, leading to new interpretations and implications for the geodynamic evolution of the Carnian and Carboniferous formations. The evaluation and modeling of the Lias and Carboniferous source rocks have revealed the presence of possible pre-salt hydrocarbon traps.
PETROLEUM GEOSCIENCE
(2023)
Article
Geochemistry & Geophysics
James A. N. Hazzard, Fred D. Richards, Saskia D. B. Goes, Gareth G. Roberts
Summary: Uncertainty in present-day glacial isostatic adjustment (GIA) rates represents a significant portion of the total ice mass balance signal over Antarctica. Physical couplings between solid Earth, sea level, and ice dynamics further enhance the dependence of the GIA signal on mantle rheology variations. This study presents a Bayesian inverse method that maps shear-wave velocities into thermomechanical structure, improving estimates of ice mass balance and providing insights into the dynamic response of West Antarctica to ice loss.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geochemistry & Geophysics
Feng Cheng, Jonathan B. Ajo-Franklin, Avinash Nayak, Veronica Rodriguez Tribaldos, Robert Mellors, Patrick Dobson
Summary: We utilize distributed acoustic sensing (DAS) and ambient noise interferometry to image the geothermal reservoirs in Imperial Valley, California, using unlit fiber-optic telecommunication infrastructure (dark fiber). By applying ambient noise interferometry to DAS records, we obtain a high-resolution two-dimensional (2D) S wave velocity (V-s) structure to a depth of 3 km. We discover a high V-s and low V-p/V-s ratio feature beneath the Brawley geothermal system, indicating hydrothermal mineralization and lower porosity.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geochemistry & Geophysics
Tianran Zhang, C. Brenhin Keller, Mark J. Hoggard, Alan D. Rooney, Galen P. Halverson, Kristin D. Bergmann, James L. Crowley, Justin Strauss
Summary: Researchers have improved quantitative subsidence analysis techniques for post-rift thermally subsided basins by introducing uncertainties and using Monte Carlo and Markov chain Monte Carlo methods. They applied this technique to a sedimentary succession in northeastern Svalbard, Norway, and obtained age estimations consistent with previous studies.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
M. J. Morris, A. G. Lipp, G. G. Roberts
Summary: Extracting uplift and erosion histories from landscapes is crucial for Earth sciences. We introduce the Wasserstein distance as a means to measure misfit between observed and theoretical landscapes, showing its advantages over Euclidean measures. Our results demonstrate the accurate recovery of uplift locations and amplitudes from synthetic landscapes, even with different noisy initial conditions. This approach holds promise for inverting real landscapes for their histories.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Catherine Spurin, Gareth G. Roberts, Conor P. B. O'Malley, Takeshi Kurotori, Samuel Krevor, Martin J. Blunt, Hamdi Tchelepi
Summary: Complex pore-scale dynamics during multiphase flow through porous rocks are not accounted for in large-scale models. However, we demonstrate that pressure fluctuations measured at the core-scale can reflect fluid displacements at the pore-scale. The spectral characteristics of pressure data provide information about flow dynamics, sample size, and rock heterogeneity. Understanding fluid flow in porous rocks is crucial for the safe storage of CO2 and hydrogen.
GEOPHYSICAL RESEARCH LETTERS
(2023)
