Geosciences, Multidisciplinary

Article Geosciences, Multidisciplinary

Estimation of China's terrestrial ecosystem carbon sink: Methods, progress and prospects

Shilong Piao, Yue He, Xuhui Wang, Fahu Chen

Summary: The article reviews the principles, frameworks and methods of estimating carbon sink in China's terrestrial ecosystems, as well as identifying key issues for improving accuracy and precision in order to serve more realistic policy making towards achieving carbon neutrality in China.

SCIENCE CHINA-EARTH SCIENCES (2022)

Article Geosciences, Multidisciplinary

Supply chain disruption during the COVID-19 pandemic: Recognizing potential disruption management strategies

Javid Moosavi, Amir M. Fathollahi-Fard, Maxim A. Dulebenets

Summary: The COVID-19 pandemic has significantly impacted supply chains worldwide. This study utilizes bibliometric, network, and thematic analyses to identify influential contributors, research streams, and disruption management strategies related to supply chain performance in the context of COVID-19. The primary themes identified are resilience and sustainability, with major research areas focused on food, health-related supply chains, and technology-aided tools such as AI, IoT, and blockchains.

INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION (2022)

Article Geosciences, Multidisciplinary

Global Propagation of Ionospheric Disturbances Associated With the 2022 Tonga Volcanic Eruption

David R. Themens, Chris Watson, Nedjeljka Zagar, Sergiy Vasylkevych, Sean Elvidge, Anthony McCaffrey, Paul Prikryl, Ben Reid, Alan Wood, P. T. Jayachandran

Summary: This study uses measurements from globally distributed Global Navigation Satellite System receivers to track the progression of traveling ionospheric disturbances (TIDs) associated with the eruption of the Hunga Tonga-Hunga Ha'apai submarine volcano. The results demonstrate the global impact of the Tonga eruption on the ionospheric state.

GEOPHYSICAL RESEARCH LETTERS (2022)

Review Environmental Sciences

Timing and mechanisms of Tibetan Plateau uplift

Lin Ding, Paul Kapp, Fulong Cai, Carmala N. Garzione, Zhongyu Xiong, Houqi Wang, Chao Wang

Summary: This review discusses the temporal and spatial distribution of surface uplift in the Tibetan Plateau and the geodynamic mechanisms behind it. The initial collision between India and Asia and the subsequent formation of the high Tibetan Plateau are still not well understood, but the uplift is primarily controlled by delamination and break-off of the subducted Indian and Asian lithosphere.

NATURE REVIEWS EARTH & ENVIRONMENT (2022)

Article Geography, Physical

UNetFormer: A UNet-like transformer for efficient semantic segmentation of remote sensing urban scene imagery

Libo Wang, Rui Li, Ce Zhang, Shenghui Fang, Chenxi Duan, Xiaoliang Meng, Peter M. Atkinson

Summary: This paper discusses the importance of semantic segmentation of remotely sensed urban scene images in practical applications, and highlights the advantages of using Transformer and the proposed UNetFormer model for real-time segmentation. Experimental results demonstrate that UNetFormer achieves faster inference speed and higher accuracy compared to state-of-the-art lightweight models.

ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING (2022)

Article Engineering, Environmental

Experimental investigation on the nonlinear characteristics of energy evolution and failure characteristics of coal under different gas pressures

Yi Xue, Jia Liu, P. G. Ranjith, Zhizhen Zhang, Feng Gao, Songhe Wang

Summary: This study conducted triaxial compression tests on coal under different gas pressure conditions to explore the influence mechanism of gas pressure on coal deformation, failure, and energy evolution. The mechanical properties, acoustic emission energy characteristics, and nonlinear characteristics of coal containing gas were obtained based on the test data. A theoretical formula for analyzing energy evolution was introduced and verified by test data. The research results indicate that energy rate can be used as a new effective mechanical parameter to analyze and predict the damage and failure characteristics of coal. The findings on energy dissipation characteristics and the defined ratio of dissipative energy rate and input energy rate provide insights for understanding the fracturing evolution and energy driving mechanism of coal.

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2022)

Article Engineering, Geological

Group Performance of Energy Piles under Cyclic and Variable Thermal Loading

Jincheng Fang, Gangqiang Kong, Qing Yang

Summary: Energy piles, a type of dual-purpose heat exchanger, have gained attention due to increasing energy demand and carbon emissions. Cyclic and variable thermal loadings can affect the stress and settlement of energy pile groups.

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING (2022)

Article Geosciences, Multidisciplinary

Numerical Simulation of Atmospheric Lamb Waves Generated by the 2022 Hunga-Tonga Volcanic Eruption

Angel Amores, Sebastian Monserrat, Marta Marcos, Daniel Argueso, Joan Villalonga, Gabriel Jorda, Damia Gomis

Summary: On 15 January 2022, the eruption of the Hunga-Tonga volcano in the South Pacific Ocean resulted in a violent underwater explosion, causing tsunami waves and atmospheric pressure disturbances. Numerical simulation shows an excellent agreement between the simulated wave arrival time and observations.

GEOPHYSICAL RESEARCH LETTERS (2022)

Article Geosciences, Multidisciplinary

Green economic growth and its inherent driving factors in Chinese cities: Based on the Metafrontier-global-SBM super-efficiency DEA model

Xin Zhao, Xiaowei Ma, Yuping Shang, Zhenhuang Yang, Umer Shahzad

Summary: This study measures and analyzes the green economic growth of 286 prefecture-level cities in China using a newly constructed DEA model, and the results show the most significant improvement in the northeast and eastern coastal cities. The study finds that the innovation effect is the primary factor driving growth.

GONDWANA RESEARCH (2022)

Article Geosciences, Multidisciplinary

Ice velocity and thickness of the world's glaciers

Romain Millan, Jeremie Mouginot, Antoine Rabatel, Mathieu Morlighem

Summary: This study provides high-resolution mapping of ice motion and thickness for glaciers worldwide, and estimates the global ice volume. The results show that the contribution of world's glaciers to sea-level rise is 20% less than previously thought. Additionally, there are notable changes in ice resources in low latitude regions, with an increase of 37% in the Himalayas and a decrease of 27% in the tropical Andes of South America, which affects water availability for local populations.

NATURE GEOSCIENCE (2022)

Article Geosciences, Multidisciplinary

Recent climate and hydrological changes in a mountain-basin system in Xinjiang, China

Junqiang Yao, Yaning Chen, Xuefeng Guan, Yong Zhao, Jing Chen, Weiyi Mao

Summary: Xinjiang, China, has experienced significant warming and moistening climate changes, leading to increases in precipitation and warm extremes, as well as decreases in cold extremes. These climate changes have resulted in glacier shrinkage, decreased snow cover, increased river runoff, and potential adverse ecological effects.

EARTH-SCIENCE REVIEWS (2022)

Article Engineering, Geological

Detection and segmentation of loess landslides via satellite images: a two-phase framework

Huajin Li, Yusen He, Qiang Xu, Jiahao Deng, Weile Li, Yong Wei

Summary: Landslides are catastrophic natural hazards that can cause loss of life, property damage, and economic disruption. In this study, an image-based two-phase data-driven framework is proposed for detecting and segmenting landslide regions using satellite images. This framework outperforms other benchmarking algorithms in accurately segmenting landslides.

LANDSLIDES (2022)

Article Engineering, Geological

Numerical Simulation of Water-Silt Inrush Hazard of Fault Rock: A Three-Phase Flow Model

Dan Ma, Hongyu Duan, Jixiong Zhang, Xianwei Liu, Zhenhua Li

Summary: A one-dimensional radial three-phase flow model of water-rock-silt was established to investigate the hydraulic characteristics of fault rock during water-silt inrush. The accuracy of the proposed model was verified through laboratory tests and the temporal-spatial distribution of hydraulic properties was obtained.

ROCK MECHANICS AND ROCK ENGINEERING (2022)

Article Environmental Sciences

Microplastics and nanoplastics in the marine-atmosphere environment

Deonie Allen, Steve Allen, Sajjad Abbasi, Alex Baker, Melanie Bergmann, Janice Brahney, Tim Butler, Robert A. Duce, Sabine Eckhardt, Nikolaos Evangeliou, Tim Jickells, Maria Kanakidou, Peter Kershaw, Paolo Laj, Joseph Levermore, Daoji Li, Peter Liss, Kai Liu, Natalie Mahowald, Pere Masque, Dusan Materic, Andrew G. Mayes, Paul McGinnity, Iolanda Osvath, Kimberly A. Prather, Joseph M. Prospero, Laura E. Revell, Sylvia G. Sander, Won Joon Shim, Jonathan Slade, Ariel Stein, Oksana Tarasova, Stephanie Wright

Summary: The study analyzes the processes and fluxes of the marine-atmospheric micro(nano)plastic cycle and highlights the limited observations. A global observation strategy for marine-atmospheric micro(nano)plastics is proposed to address the uncertainties and knowledge gaps.

NATURE REVIEWS EARTH & ENVIRONMENT (2022)

Article Environmental Sciences

Ensemble models of GLM, FDA, MARS, and RF for flood and erosion susceptibility mapping: a priority assessment of sub-basins

Amirhosein Mosavi, Mohammad Golshan, Saeid Janizadeh, Bahram Choubin, Assefa M. Melesse, Adrienn A. Dineva

Summary: This study proposes novel predictive models for flood and erosion susceptibility mapping in mountainous watersheds. The study also prioritizes the existing sub-basins based on their susceptibility to erosion and flood. A comparative analysis of different models and their ensemble is performed to determine the best model for predicting susceptibility. The results show that the ensemble model has the highest predictive performance and the sub-basins SW3 and SW5 are identified as highly sensitive to flood and soil erosion, respectively.

GEOCARTO INTERNATIONAL (2022)

Article Geosciences, Multidisciplinary

Stereo Plume Height and Motion Retrievals for the Record-Setting Hunga Tonga-Hunga Ha'apai Eruption of 15 January 2022

James L. Carr, Akos Horvath, Dong L. Wu, Mariel D. Friberg

Summary: Stereo methods using GOES-17 and Himawari-8 satellites revealed that the Hunga Tonga-Hunga Ha'apai volcanic plume reached a record altitude of 50-55 km on January 15, 2022. This information is crucial for understanding plume height, dispersion, transport in the stratosphere, and climate impacts.

GEOPHYSICAL RESEARCH LETTERS (2022)

Article Environmental Sciences

Digital Twin Technology Challenges and Applications: A Comprehensive Review

Diego M. Botin-Sanabria, Adriana-Simona Mihaita, Rodrigo E. Peimbert-Garcia, Mauricio A. Ramirez-Moreno, Ricardo A. Ramirez-Mendoza, Jorge de J. Lozoya-Santos

Summary: A digital twin is a virtual representation of a physical object or process that collects information from the real environment to validate and simulate its present and future behavior. It plays a crucial role in data-driven decision making, complex systems monitoring, product validation and simulation, and object lifecycle management.

REMOTE SENSING (2022)

Article Geosciences, Multidisciplinary

Worldwide Signature of the 2022 Tonga Volcanic Tsunami

Matias Carvajal, Ignacio Sepulveda, Alejandra Gubler, Rene Garreaud

Summary: The 2022 Tonga tsunami, triggered by the eruption of the Hunga Tonga-Hunga Ha'apai volcano, was characterized by small leading waves arriving earlier than expected, while the largest waves were concentrated in the Pacific region and their timing coincided with tsunami propagation times from the volcano.

GEOPHYSICAL RESEARCH LETTERS (2022)

Article Geosciences, Multidisciplinary

Recent advances in carbon dioxide geological storage, experimental procedures, influencing parameters, and future outlook

Muhammad Ali, Nilesh Kumar Jha, Nilanjan Pal, Alireza Keshavarz, Hussein Hoteit, Mohammad Sarmadivaleh

Summary: The oxidation of fossil fuels leads to significant CO2 emissions, contributing to global warming. Storing CO2 in underground formations is a potential solution, but the presence of organic material in geological formations affects storage potential. Studying the wetting characteristics and the impact of organic material is crucial for understanding CO2 behavior and enhancing storage capacity.

EARTH-SCIENCE REVIEWS (2022)

Review Environmental Sciences

Plant phenology changes and drivers on the Qinghai-Tibetan Plateau

Miaogen Shen, Shiping Wang, Nan Jiang, Jianping Sun, Ruyin Cao, Xiaofang Ling, Bo Fang, Lei Zhang, Lihao Zhang, Xiyan Xu, Wangwang Lv, Baolin Li, Qingling Sun, Fandong Meng, Yuhao Jiang, Tsechoe Dorji, Yongshuo Fu, Amy Iler, Yann Vitasse, Heidi Steltzer, Zhenming Ji, Wenwu Zhao, Shilong Piao, Bojie Fu

Summary: Warming temperatures and shifting precipitation patterns on the Qinghai-Tibetan Plateau are causing changes in vegetation phenology, with the start of the growing season advancing and the end of season delaying. These changes could impact land surface and atmospheric processes, species interactions, and regional climate patterns.

NATURE REVIEWS EARTH & ENVIRONMENT (2022)