Article
Geosciences, Multidisciplinary
Junbo He, Yanhong Wu, He Zhu, Jun Zhou, Chaoyi Luo, Haijian Bing
Summary: Landslides have a significant influence on bedrock weathering, pedogenesis, and ecological succession, playing a pivotal role in biogeochemical cycles. Landslide chronosequences are valuable study systems for investigating vegetation succession, soil development, and nutrient dynamics. This study analyzed soil phosphorus fractions across a 22,000-year landslide chronosequence, revealing the impact of environmental factors on these fractions and elucidating the supply of bioavailable phosphorus.
Article
Geosciences, Multidisciplinary
Nanji Suo, Changchun Xu, Linlin Cao, Lingling Song, Xiaoni Lei
Summary: In this paper, a non-linear trivariate drought index (NTDI) was developed to comprehensively monitor and evaluate drought events by considering precipitation, potential evapotranspiration, and soil moisture. The NTDI performed well in agricultural drought monitoring, providing accurate and reliable information.
Article
Geosciences, Multidisciplinary
Yongsheng Hong, Jonathan Sanderman, Tomislav Hengl, Songchao Chen, Nan Wang, Jie Xue, Zhiqing Zhuo, Jie Peng, Shuo Li, Yiyun Chen, Yaolin Liu, Abdul Mounem Mouazen, Zhou Shi
Summary: This study used a globally distributed topsoil MIR spectral library to predict SOC using different modeling methods. The results showed that fractional-order derivatives (FODs) improved the prediction accuracy of SOC. The 0.75-order derivative was found to be optimal for ratio index-based linear regression (RI-LR) models, while the convolutional neural network (CNN) model outperformed other models for full-spectrum modeling.
Article
Geosciences, Multidisciplinary
Lanlan Du, Shengli Guo, Rui Wang, Yanqing Guo, Yaxian Hu, Lin Yang, Weijia Li
Summary: Exploring the changes in abundant and rare sub-communities and their correlations with soil carbon cycling functionality (SCCF), this study sheds light on the different characteristics of these sub-communities in eroded ecosystems. Abundant sub-communities show higher degree and betweenness centrality in the co-occurrence network, while rare sub-communities have more frequent positive interactions with other species. The alpha-diversity of both abundant and rare sub-communities is positively linked to SCCF.
Article
Geosciences, Multidisciplinary
Wenfeng Ruan, Cong Hu, Zhenghui Li, Yonggang Jia
Summary: Sea level and bottom water temperature variations caused by the Last Deglaciation climate warming have impacted the stability of marine hydrates. Simulations revealed that hydrate dissociation occurred in certain areas of the northern South China Sea, resulting in the release of methane into the seawater and atmosphere. The depth at which dissociation occurred ranged from 480 to 720 meters, covering approximately 6.68% of the northern South China Sea Area. Since the Last Deglaciation, an estimated amount of hydrates dissociated, releasing a significant amount of methane.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Fengbei Shen, Chengdong Xu, Jinfeng Wang, Maogui Hu, Guanlin Guo, Tingting Fang, Xingbao Zhu, Hongying Cao, Huan Tao, Yixuan Hou
Summary: Soil heavy metals contamination is closely related to human health. Three-dimensional modeling and mapping are crucial for site assessment and remediation. However, current methods have limitations in considering spatial auto-correlation and stratified heterogeneity simultaneously. This study introduced a novel methodology, 3D-MSN, which accounted for both auto-correlation and heterogeneity. The results demonstrated the superiority of 3D-MSN compared to traditional approaches, providing valuable insights for site assessment and remediation efforts.
Article
Geosciences, Multidisciplinary
A. M. Usman, D. J. J. Versfeld
Summary: In this study, the performance of the hidden Markov models (HMMs) for detecting and classifying whale vocalisations was improved. Feature extraction techniques based on principal component analysis (PCA) were proposed to extract relevant features. The experiments using PCA-HMMs and kPCA-HMMs on southern right whale and humpback whale vocalisation datasets showed that kPCA-HMMs outperformed PCA-HMMs. The proposed PC-HMMs not only outperformed existing FE-HMMs but also had lower computational complexity.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Najia Saqib, Shujaat Abbas, Ilhan Ozturk, Muntasir Murshed, Malgorzata Tarczynska-Luniewska, Mohammad Mahtab Alam, Waldemar Tarczynski
Summary: This study examines the impact of economic growth, financial development, eco-friendly ICT, renewable energy, and human capital on lowering carbon footprint in the world's top polluting economies from 1993 to 2020. The findings suggest that eco-friendly ICT has the potential to effectively alleviate pollution, and financial development, renewable energy, and environmental technology are proposed as potential solutions for reducing carbon emissions.
Article
Geosciences, Multidisciplinary
Xiqin Yan, Juying Jiao, Xiaohan Jiang, Qian Xu, Mengmeng Li, Ziqi Zhang, Hongkun Qi, Long Yang
Summary: Sediment connectivity is crucial for watershed management and soil and water conservation, but quantifying it remains challenging. This research uses sediment yield and sediment marks to monitor functional sediment connectivity. Results show that rainfall characteristics influence the activation of sediment connectivity.
Article
Geosciences, Multidisciplinary
Yuri Lopes Zinn, Welton Pereira da Rocha Jr
Summary: This study assessed the evolution of Journal Impact Factors (JIF) and related data in the field of Soil Science over a 26-year period, and compared it with the field of Agronomy. The results showed a significant growth in JIFs and output in Soil Science, with commercial scientific publishers' journals experiencing higher growth rates than non-profit journals. The study also highlighted the importance of considering not only JIF, but also the bibliometric footprint, in determining the relevance and leadership of journals in the discipline.
Article
Geosciences, Multidisciplinary
Anastasios Nikitas, Georgios Makrodimitras, Maria V. Triantaphyllou, Nikolaos Pasadakis, Kimon Christanis, Stavros Kalaitzidis, Grigoris Rousakis, Ioannis Panagiotopoulos, Alexandra Gogou, Alexandros Papadopoulos, Efthimios Tartaras, Aristofanis Stefatos
Summary: Due to the lack of deep wells in the broader region, studying mud volcanic deposits can improve the geological understanding of the Mediterranean Ridge. In this study, biostratigraphic and geochemical analyses were performed on mud breccia deposits from five Mud Volcanoes in the central MR. The results indicate the origin of these deposits and provide insights into the source rock potential. Seismic data is also used to determine the distribution of major lithostratigraphic formations.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Energy & Fuels
Lin Jia, Kewen Li, Yun Han, Chi Zhang, Lipeng Zhao
Summary: This study proposes a new approach of retrofitting abandoned oil wells into geothermal wells, and investigates the effects of different parameters on the performance using a numerical model. The results show that the enhanced fracture system significantly improves the efficiency of geothermal energy extraction, and optimal design should control the flow rate and use proppant.
Article
Computer Science, Interdisciplinary Applications
Yurong Zhang, Shuntao Fan, Sa Li, Zhenyi Shen
Summary: This study analyzes the effect of the installation process on the subsequent foundation consolidation response. By comparing the results from large deformation finite element analysis and small strain finite element model, the influence of large soil deformations on consolidated bearing capacity is examined. The relationship between preload and settlement is determined and a revised time factor function is proposed.
COMPUTERS AND GEOTECHNICS
(2024)
Article
Geosciences, Multidisciplinary
Xiaocan Yu, Chunlian Wang, Hua Huang, Kai Yan
Summary: Oilfield brines are a significant alternative lithium resource. This study investigates the metallogenic characteristics and enrichment process of oilfield brines from the Jianghan Basin, central China using chemical and multi-isotope data. The results suggest that lithium enrichment in these brines is the result of interaction with clastic host rocks and dilution by meteoric water.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Computer Science, Interdisciplinary Applications
Anfeng Hu, Senlin Xie, Zhirong Xiao, Xunjian Hu, Meihui Wang, Yuan Chen, Yiyang Chen
Summary: This paper presents a novel analytical solution for the consolidation behavior of viscoelastic saturated soft soil under large-scale ground loading. The study shows that the soil permeability coefficient, Newtonian viscosity coefficient, and Hooke's spring modulus have significant influences on the dissipation of excess pore water pressure and the degree of consolidation. The permeability condition of the tunnel also affects the distribution of excess pore water pressure in the soil layer above the tunnel.
COMPUTERS AND GEOTECHNICS
(2024)
Article
Energy & Fuels
Luis Salala, Jonathan Argueta, Noel Lopez, Osmany Aparicio, Diana Martinez, Pedro Santos, Arturo Quezada, Oziel Garcia, Jose Erazo, Hiroyuki Yamagishi, Noriyoshi Tsuchiya
Summary: Geothermal systems have significant potential to replace reliance on fossil fuels. El Salvador, being tectonically active, already supplies a significant portion of its electricity demand using volcanic geothermal fields. The study compares different geothermal areas in El Salvador and highlights the controlling factors in the characteristics of geothermal reservoirs.
Article
Geosciences, Multidisciplinary
Guanfang Sun, Yan Zhu, Wei Mao, Yonghong Li, Jinzhong Yang, Zhaoliang Gao
Summary: This study developed a water and salt balance model to predict long-term water and salt dynamics in seasonally frozen arid agricultural regions. The model was validated in a region in China and showed that increasing autumn irrigation water can decrease soil salinity during the irrigation period, but has limited impact on long-term average soil salinity.
Article
Computer Science, Interdisciplinary Applications
Jian-Hong Wan, Ali Zaoui
Summary: Ground vibrations during earthquakes can cause soil strength loss and structural damage. Rubber-soil mixtures (RSM) have shown promise in reducing residual ground deformation. This study used molecular dynamics simulations to investigate the friction behavior of the rubber-clay interface in RSM systems. The results revealed a direct correlation between normal stress and friction force, with denser soil systems exhibiting higher friction forces.
COMPUTERS AND GEOTECHNICS
(2024)
Article
Computer Science, Interdisciplinary Applications
Hongying Wang, Qiang Zhang, Peinan Wu, Yanjing Li, Lijun Han, Guilei Han
Summary: In addition to the Mohr-Coulomb and Hoek-Brown criteria, other nonlinear functions are used to describe the plastic response of rock mass. This paper derived the equivalent cohesive strength, frictional angle, and dilatancy angle for nonlinear yield and plastic flow rock masses. The solution for a circular tunnel in any nonlinear yield and plastic flow rock masses was derived and verified using a numerical procedure. The analysis of strain-softening rock masses under two assumed nonlinear yield criteria was also studied.
COMPUTERS AND GEOTECHNICS
(2024)
Article
Geosciences, Multidisciplinary
Mohamed Khatif Tawaf Mohamed Yusof, Ahmad Safuan A. Rashid, Mohd Faisal Abdul Khanan, Muhammad Zulkarnain Abdul Rahman, Wardatun Ahmar Abdul Manan, Roohollah Kalatehjari, Ali Dehghanbanadaki
Summary: This study investigates the effects of climate change on landslide susceptibility mapping (LSM) using a case study on Penang Island in Malaysia. The results show that future rainfall and temperatures are expected to increase, especially under a higher climate change scenario. LSM can help local authorities identify critical areas for monitoring and responding to landslide risks caused by climate change.
PHYSICS AND CHEMISTRY OF THE EARTH
(2024)
