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Late summer northwestward Amazon plume pathway under the action of the North Brazil Current rings Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-23 L. Olivier, G. Reverdin, J. Boutin, R. Laxenaire, D. Iudicone, S. Pesant, Paulo H.R. Calil, J. Horstmann, D. Couet, J.M. Erta, P. Huber, H. Sarmento, A. Freire, A. Koch-Larrouy, J.-L. Vergely, P. Rousselot, S. Speich
The North Brazil Current (NBC) flows offshore of the mouth of the Amazon River and seasonally sheds anticyclonic rings (NBC rings) that propagate northwestward and interact with the Amazon River plume (ARP). Mesoscale features have a high temporal variability that is hard to monitor from current weekly and monthly sea surface salinity (SSS) satellite fields. Novel SSS fields with a higher temporal
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Propagation velocity of landslide-induced liquefaction and entrainment of overridden loose, saturated sediments Eng. Geol. (IF 7.4) Pub Date : 2024-04-22 Liam J. Steers, Ryley A. Beddoe, W. Andy Take
Loose saturated granular materials are particularly susceptible to instability, resulting in deviatoric strain softening, and static liquefaction. When instability occurs in the context of a landslide, the consequences in terms of the mobility of the debris and risk to life and property can be catastrophic. Physical model landslides initiated in a geotechnical centrifuge under rising groundwater conditions
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Volcanic and climatic impacts on silicon abundance in shale: Implications for the expansion of Permo-Carboniferous terrestrial plants in North China Gondwana Res. (IF 6.1) Pub Date : 2024-04-21 Yu Qi, Yiwen Ju, Mu Liu, Chunfang Cai, Hongjian Zhu
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A conceptual model for evaluating the stability of high-altitude ice-rich slopes through coupled thermo-hydro-mechanical simulation Eng. Geol. (IF 7.4) Pub Date : 2024-04-20 Mingdong Wei, Limin Zhang, Ruochen Jiang
The collapse of glacial, permafrost, and ice-rich moraine slopes in high-altitude mountainous areas not only threatens downstream residents and infrastructure but also displaces ice mass to lower and warmer elevations, accelerating glacial ablation to some extent. Despite being considered rare, ice-rich slopes collapse more frequently than commonly thought due to climate change. For example, two adjacent
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Influence of desiccation during freeze-thaw cycles on volumetric shrinkage and tensile strength of compacted clayey soils Eng. Geol. (IF 7.4) Pub Date : 2024-04-20 Yao Wei, Chao-Sheng Tang, Cheng Zhu, Qing Cheng, Yang Lu, Lin Li, Ben-Gang Tian, Bin Shi
Tensile strength is a crucial mechanical property that governs the initiation and propagation of soil tensile cracks. With the global prevalence of warming effects and extreme climatic events, the recurrent freeze-thaw (F-T) cycles intensify the complex evolutions of soil pore structure and tensile strength in regions with widespread seasonal freezing or permafrost active layers. This study investigates
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Damage assessment of Siverek Castle during the Kahramanmaraş Earthquakes (Mw 7.7 and Mw 7.6) on 06 February 2023: Remediation and strengthening proposals Eng. Geol. (IF 7.4) Pub Date : 2024-04-20 Mohammad Manzoor Nasery, Muhammet Çelik, Erol Şadoğlu
On February 6, 2023, two significant earthquakes with magnitudes (Mw) of 7.7 and 7.6 struck Turkey, occurring nine hours apart. In addition to the tragic loss of over 50,000 lives in the earthquakes centered in Kahramanmaraş, hundreds of thousands of engineering structures, such as residences, schools, hospitals, historical landmarks, highways, and more, were severely damaged. This study assesses the
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Reconstruction of the evolution of the Yurongguo ophiolite: Constraints on the southward intra-oceanic subduction of the Bangong-Nujiang Tethys Ocean Gondwana Res. (IF 6.1) Pub Date : 2024-04-20 Chenglei Zhang, Qingkun Yang, Qiangtai Huang, Wenchao Chen, Yudong Cao, Haotong Yu, Hongfei Duan
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Cadmium isotope fractionation in a S-type granite related large magmatic–hydrothermal system Gondwana Res. (IF 6.1) Pub Date : 2024-04-20 Chuanwei Zhu, Guangshu Yang, Hanjie Wen, Yuxu Zhang, Zhengbing Zhou, Zhanke Li, Shengjiang Du, Lei Zhang, Xiaocui Chen, Béatrice Luais
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Modeling gross primary production and transpiration from sun-induced chlorophyll fluorescence using a mechanistic light-response approach Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-18 Quentin Beauclaire, Simon De Cannière, François Jonard, Natacha Pezzetti, Laura Delhez, Bernard Longdoz
Sun-induced chlorophyll fluorescence (SIF) is a promising optical remote sensing signal which is directly linked to photosynthesis, allowing for the monitoring of gross primary production (GPP). Although empirical relationships between these variables have demonstrated the potential of SIF for site-specific GPP estimations, a better physiological understanding of the link between SIF and GPP would
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Estimation of shear strength parameters of intact limestones using miniature triaxial test Eng. Geol. (IF 7.4) Pub Date : 2024-04-18 Ebrahim Ahmadi Sheshde, A. Cheshomi, Reza Maleki
Determination of the strength parameters of intact rock samples is an important requirement in rock engineering. On the other hand, proposing a simple method as an index to estimating the strength parameters is one of the tasks of engineering geology. The conventional triaxial test (CTT) is one approach used to determine shear strength parameters (φ and c) that requires standard core cylindrical samples
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Assessment of snow cover mapping algorithms from Landsat surface reflectance data and application to automated snowline delineation Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-17 Xiongxin Xiao, Shuang Liang
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Spectral-temporal traits in Sentinel-1 C-band SAR and Sentinel-2 multispectral remote sensing time series for 61 tree species in Central Europe Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-17 Christian Schulz, Michael Förster, Stenka Valentinova Vulova, Alby Duarte Rocha, Birgit Kleinschmit
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Quantifying vegetation species functional traits along hydrologic gradients in karst wetland based on 3D mapping with UAV hyperspectral point cloud Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-17 Bolin Fu, Liwei Deng, Weiwei Sun, Hongchang He, Huajian Li, Yong Wang, Yeqiao Wang
Karst wetlands, recognized for their unique hydrology and remarkable biodiversity, play a crucial role in global carbon sequestration and the terrestrial carbon cycle. However, understanding the relationships between hydrology and the spatial distribution, functional traits, and diversity of karst wetland vegetation is challenging. This study proposes a novel self-supervised deep learning method, the
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Mangrove species mapping in coastal China using synthesized Sentinel-2 high-separability images Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-17 Chuanpeng Zhao, Mingming Jia, Rong Zhang, Zongming Wang, Chunying Ren, Dehua Mao, Yeqiao Wang
The absence of national-scale mangrove species maps has hindered the precise estimation of their blue carbon storage ecological value evaluation, and effective management of protected areas. Mangroves typically grow in harsh intertidal environments, with non-mono species distributed together, and exhibit varied species compositions and appearances along the latitudes. Previous studies demonstrated
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Corrigendum to “A stochastic model of geomorphic risk due to episodic river aggradation and degradation” [Engineering Geology 309 (2022) 106845] Eng. Geol. (IF 7.4) Pub Date : 2024-04-16 Tzu-Yin Kasha Chen, Corentine Chevillard, Chi-Yao Hung, Yu-Chou Chaing, Meng-Long Hsieh, Hervé Capart
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Examination of the correlation between SPT and undrained shear strength: Case study of clay till in Alberta, Canada Eng. Geol. (IF 7.4) Pub Date : 2024-04-16 Chao Kang, Mark Brotherton, Karen Anderson, Kevin Semeniuk, Gavin Mayer, Alex Law, Zhenyao Xia, Lun Zhang, Ali Farrag, Jin You, Majed Abdallah
In this study, we introduce a novel method for estimating undrained shear strength (C) by incorporating SPT depth. A comprehensive dataset of 328 data groups from locations in Alberta was employed to investigate the correlation between C and various factors such as Atterberg limits, moisture content, sampling depth, and both field SPT numbers (N) and modified SPT numbers (N), utilizing Pearson Correlation
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Impact assessment of geohazards triggered by 6 February 2023 Kahramanmaras Earthquakes (Mw 7.7 and Mw 7.6) on the natural gas pipelines Eng. Geol. (IF 7.4) Pub Date : 2024-04-16 Erdinc Orsan Unal, Sultan Kocaman, Candan Gokceoglu
The safe operation of pipelines transporting natural gas is crucial to meet the energy demands of modern societies, but geohazards pose significant challenges to their integrity. This study evaluates the impact of geohazards, namely landslides, high peak ground acceleration (PGA), liquefaction and surface rupture on natural gas pipelines. These hazards caused several incidents on the pipelines during
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Geochemical characteristics and formation mechanism of organic-rich source rocks of mixed sedimentary strata in continental saline lacustrine basin: A case study of Permian Pingdiquan formation in the Shishugou Sag, Junggar Basin, Northwest China Int. J. Coal Geol. (IF 5.6) Pub Date : 2024-04-16 Wenren Zeng, Boran Wang, Xuan Chen, Guobin Fu, Zhihuan Zhang, Zhilong Huang
The Permian Pingdiquan Formation (Pp) in Shishugou Sag, Junggar Basin, Northwest China, is a typical example of mixed sedimentary strata formed in a saline lacustrine environment, characterized by complex lithological assemblages and extensive distribution of organic-rich source rocks. To further investigate the differences in oil-source contribution and hydrocarbon generation characteristics of source
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Stratified burn severity assessment by integrating spaceborne spectral and waveform attributes in Great Xing'an Mountain Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-15 Simei Lin, Linyuan Li, Shangbo Liu, Ge Gao, Xun Zhao, Ling Chen, Jianbo Qi, Qin Shen, Huaguo Huang
Burn severity assessment is critical for understanding the pattern of post-fire vegetation recovery and ecosystem resilience. Previous studies proposed various field criteria (e.g., Composite Burn Index (CBI)) to quantify burn severity from strata level to total site level, yet suffering from surveyors' subjective interpretation across site conditions. High-resolution passive remote sensing allows
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Determination of damage evolution characteristics in granite residual soil shear bands by micro-CT-based advanced digital volume correlation Eng. Geol. (IF 7.4) Pub Date : 2024-04-15 Chengsheng Li, Lingwei Kong, Bingxin Zhang, Zhijun Liu, Rongjun Shu, Tianguo Li
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Practical considerations for using petrophysics and geoelectrical methods on clay rich landslides Eng. Geol. (IF 7.4) Pub Date : 2024-04-13 James P. Boyd, Andrew Binley, Paul Wilkinson, Jessica Holmes, Edward Bruce, Jonathan Chambers
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Ocean eddy detection based on YOLO deep learning algorithm by synthetic aperture radar data Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-12 Nannan Zi, Xiao-Ming Li, Martin Gade, Han Fu, Sisi Min
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Satellite-based tracking of reservoir operations for flood management during the 2018 extreme weather event in Kerala, India Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-11 Sarath Suresh, Faisal Hossain, Sanchit Minocha, Pritam Das, Shahzaib Khan, Hyongki Lee, Konstantinos Andreadis, Perry Oddo
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Soil moisture profile estimation under bare and vegetated soils using combined L-band and P-band radiometer observations: An incoherent modeling approach Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-11 Foad Brakhasi, Jeffrey P. Walker, Jasmeet Judge, Pang-Wei Liu, Xiaoji Shen, Nan Ye, Xiaoling Wu, In-Young Yeo, Edward Kim, Yann Kerr, Thomas Jackson
Effective water management in agriculture requires a comprehensive understanding of the distribution of water content throughout the soil profile to the root zone. This knowledge empowers farmers and water managers to make informed decisions regarding irrigation timing and quantity for optimizing crop growth. To estimate the soil moisture profile, this study utilized combined L- and P-band radiometry
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Changes in the lithosphere, atmosphere, and ionosphere before and during the Mw = 7.7 Jamaica 2020 earthquake Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-10 Dedalo Marchetti, Kaiguang Zhu, Alessandro Piscini, Essam Ghamry, Xuhui Shen, Rui Yan, Xiaodan He, Ting Wang, Wenqi Chen, Jiami Wen, Yiqun Zhang, Yuqi Cheng, Mengxuan Fan, Donghua Zhang, Hanshuo Zhang, Guido Ventura
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Simulation of dynamic pulsing fracking in poroelastic media by a hydro-damage-mechanical coupled cohesive phase field model Eng. Geol. (IF 7.4) Pub Date : 2024-04-10 Hui Li, Zhenjun Yang, Fengchen An, Jianying Wu
This study develops a hydro-damage-mechanical fully coupled numerical method capable of modelling complex fluid-driven transient dynamic crack propagation in quasi-brittle poroelastic media. In this method, the fluid flow in both fractures and porous media is described by a fluid continuity equation with the modified Darcy-Poiseuille law based on the Biot's poroelastic theory. The fluid pressure and
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Slope stability analysis of an open pit mine with considering the weathering agent: Field, laboratory and numerical studies Eng. Geol. (IF 7.4) Pub Date : 2024-04-10 Mohammad Rezaei, Seyed Zanyar Seyed Mousavi
Freezing-thawing (F-T) processes can affect the slope instability of open pit mine wall in cold regions, resulting the increase of mining operations cost and decrease the safety of personnel and equipment. Therefore, estimating the degradation of rockmass geomechanical properties under the weathering agent is crucial for slope stability analysis of an open pit mine in mountain areas. Accordingly, for
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Global estimates of L-band vegetation optical depth and soil permittivity of snow-covered boreal forests and permafrost landscape using SMAP satellite data Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-09 Divya Kumawat, Ardeshir Ebtehaj, Mike Schwank, Xiaojun Li, Jean-Pierre Wigneron
The tau-omega model is expanded to properly simulate L-band microwave emission of the soil–snow–vegetation continuum through a closed-form solution of Maxwell’s equations, considering the intervening dry snow layer as a loss-less medium. The error standard deviations of a least-squared inversion are 0.1 and 3.5 for VOD and ground permittivity, over moderately dense vegetation and a snow density ranging
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Retrieval of ground, snow, and forest parameters from space borne passive L band observations. A case study over Sodankylä, Finland Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-09 Manu Holmberg, Juha Lemmetyinen, Mike Schwank, Anna Kontu, Kimmo Rautiainen, Ioanna Merkouriadi, Johanna Tamminen
Previous studies have indicated and shown the feasibility of retrieving snow density from ground based passive microwave measurements at the L band (2GHz) from theoretical and experimental viewpoints. This paper expands the previous studies by presenting a case study of the retrieval problem with space borne brightness temperature measurements from the SMOS satellite over Sodankylä, Finland. To successfully
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Reliability-oriented segmentation of sublayers in geologically uncertain substrate: A case study of the Żelazny Most TSF Eng. Geol. (IF 7.4) Pub Date : 2024-04-09 Dariusz Łydżba, Adrian Różański, Marek Kawa, Mikołaj Masłowski, Jakub Rainer, Maciej Sobótka, Paweł Stefanek
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Seasonality of rockfall triggers and conditioning factors interpreted from a lidar-derived rockfall database Eng. Geol. (IF 7.4) Pub Date : 2024-04-09 Adam Malsam, Gabriel Walton
Relationships between rockfall and environmental factors have been the focus of considerable research over the last several decades. Many prior studies have not quantified rockfall volume due to challenges in volume estimation without the use of modern remote sensing methods, and the role of longer-term conditioning factors on rockfall activity is often not considered. As part of a broader effort to
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CFD-DEM-based evaluation of main-channel sediment transport processes subject to supplement from a steep tributary Eng. Geol. (IF 7.4) Pub Date : 2024-04-09 Yi-Pin Nie, Xie-Kang Wang, Xu-Feng Yan
The accumulation of sediments within mountainous gullies serves as a significant source for the main channel. Understanding the transport characteristics is crucial for comprehending reach-scale sediment supply features and channel morphodynamics. This study addresses the previously unexplored challenges in accurately quantifying variations in sediment transport rates, particularly during critical
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InSAR supported by geophysical and geotechnical information constrains two-dimensional motion of a railway embankment constructed on peat Eng. Geol. (IF 7.4) Pub Date : 2024-04-09 S. Azadnejad, A. Hrysiewicz, A. Trafford, F. O'Loughlin, E.P. Holohan, F. Kelly, S. Donohue
Rail and road embankments constructed on peatlands are subjected to significant challenges due to the high compressibility of peat. They are, therefore, susceptible to considerable settlement following construction. Accurate and timely monitoring of such embankments is important in order to enable proactive intervention strategies and to avoid failures. Multi-temporal Synthetic Aperture RADAR Interferometry
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A novel framework for landslide displacement prediction using MT-InSAR and machine learning techniques Eng. Geol. (IF 7.4) Pub Date : 2024-04-08 Chao Zhou, Ying Cao, Lulu Gan, Yue Wang, Mahdi Motagh, Sigrid Roessner, Xie Hu, Kunlong Yin
The prediction of landslide deformation is an important part of landslide early warning systems. Displacement prediction based on geotechnical in-situ monitoring performs well, but its high costs and spatial limitations hinder frequent use within large areas. Here, we propose a novel physically-based and cost-effective landslide displacement prediction framework using the combination of Multi-Temporal
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A creep model for soil-rock mixture considering the effect of rock contents and freeze-thaw cycles Eng. Geol. (IF 7.4) Pub Date : 2024-04-08 Peiyong Qiu, Liyun Tang, Pengyu Wang, Jianguo Zheng, Weibing Wang, Yongqiang Li, Guoyu Li, Long Jin, Yongtang Yu, Xu Duan
The complicated heterogeneity and discontinuity of soil-rock mixture (SRM) usually cause high variability in SRM's creep characteristics, which can easily cause geological disasters (e.g., landslides) under harsh environment such as freeze-thaw (F-T) cycles. However, the nonlinear creep behaviors of SRM material, under varying internal structures induced by F-T cycles, skeleton changes and stress states
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Shedding effects of sediment composition and bed morphology on debris flow dynamics and entrainment mechanism: Insights from laboratory experiments Eng. Geol. (IF 7.4) Pub Date : 2024-04-08 Pu Li, Jiading Wang, Kaiheng Hu, Jialin Xie
Sediment composition and bed morphology are two crucial factors that can significantly affect the dynamics of debris mixtures and attendant entrainment characteristics. In this study, three types of bed sediments with varying contents of coarse and fine grains and different bed longitudinal transition angles were designed for our small-scale flume experiments. The profound deceleration, redirection
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Time-dependent degradation of sliding cohesion due to subcritical crack propagation and damage to rock bridge in rock slopes Eng. Geol. (IF 7.4) Pub Date : 2024-04-08 Yuntao Zhou, Xiaoyan Zhao
The time-dependent properties of brittle rocks with discontinuities are important for long-term rock-slope stability. This study proposes a subcritical crack growth model considering damage (SCGMD) for the time-dependent degradation of rock joint cohesion under compression-shear stress. In this model, the rock joint cohesion was derived as a function of the damage degree and of the length of rock bridges
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A generalized model for mapping sunflower areas using Sentinel-1 SAR data Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-06 Abdul Qadir, Sergii Skakun, Nataliia Kussul, Andrii Shelestov, Inbal Becker-Reshef
Existing crop mapping models, rely heavily on reference (calibration) data obtained from remote sensing observations. However, the transferability of such models in space and time, without the need for additional extensive datasets remains a significant challenge. There is still a large gap in developing generalized classification models capable of mapping specific or multiple crops with minimal calibration
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Life in the Cambrian shallows: Exceptionally preserved arthropod and mollusk microfossils from the early Cambrian of Sweden Geology (IF 5.8) Pub Date : 2024-04-01 Ben J. Slater
Burgess Shale–type (BST) Lagerstätten record an exceptional variety of Cambrian soft-bodied fauna, yet these deposits are typically restricted to outboard depositional settings >1000 km from the paleocoastline. For shallow, well-oxygenated shelf environments, our knowledge of non-mineralized animals (the majority of diversity) is severely limited, giving rise to substantial bias in our perception of
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Four-decades of sediment transport variations in the Yellow River on the Loess Plateau using Landsat imagery Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-05 Zhiqiang Qiu, Dong Liu, Mengwei Duan, Panpan Chen, Chen Yang, Keyu Li, Hongtao Duan
The Yellow River is globally recognized for its significant sediment load, primarily attributed to its passage through the Loess Plateau. Notably, effective soil erosion control measures have led to a substantial decrease in sediment transport since the 1950s. However, a lack of comprehensive and detailed data impedes understanding of long-term spatiotemporal changes in suspended sediment concentration
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Filling gaps in cloudy Landsat LST product by spatial-temporal fusion of multi-scale data Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-05 Qunming Wang, Yijie Tang, Xiaohua Tong, Peter M. Atkinson
Land surface temperature (LST) is an important factor in studies of surface energy fluxes between the Earth's surface and atmosphere. The Landsat LST product has been applied widely due to its fine spatial resolution and high data quality. Frequent cloud coverage, however, results in different degrees of gaps in the Landsat LST images, restricting greatly their application in practical cases requiring
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Does zircon geochemistry record global sediment subduction? Geology (IF 5.8) Pub Date : 2024-04-01 Kurt E. Sundell, Francis A. Macdonald, Stephen J. Puetz
Global compilations of zircon geochemistry have been used as evidence for changes in plate tectonic styles and surface environments. In particular, zircon δ18O has been used as a proxy for global sediment subduction and incorporation into igneous melts. However, research employing such compilations commonly ignores geologic and geographic context. We analyze a newly georeferenced zircon δ18O database
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Subduction polarity reversal facilitated by plate coupling during arc-continent collision: Evidence from the Western Kunlun orogenic belt, northwest Tibetan Plateau Geology (IF 5.8) Pub Date : 2024-04-01 Zaili Tao, Jiyuan Yin, Christopher J. Spencer, Min Sun, Wenjiao Xiao, Andrew C. Kerr, Tao Wang, Pengpeng Huangfu, Yunchuan Zeng, Wen Chen
Subduction polarity reversal usually involves the break off or tearing of the downgoing plate (DP) along the continent-ocean transition zone, in order to initiate subduction of the overriding plate (OP) with opposite polarity. We propose that subduction polarity reversal can also be caused by DP-OP coupling and can account for the early Paleozoic geological relationships in the Western Kunlun orogenic
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Ice-rafted dropstones at midlatitudes in the Cretaceous of continental, Iberia: REPLY Geology (IF 5.8) Pub Date : 2024-04-01 Juan Pedro Rodríguez-López, Carlos L. Liesa, Aránzazu Luzón, Arsenio Muñoz, María J. Mayayo, Julian B. Murton, Ana R. Soria
Abstract not available
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Lighting characteristics of public space in urban functional areas based on SDGSAT-1 glimmer imagery:A case study in Beijing, China Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-04 Saimiao Liu, Yi Zhou, Futao Wang, Shixin Wang, Zhenqing Wang, Yanchao Wang, Gang Qin, Ping Wang, Ming Liu, Lei Huang
The artificial light sources in urban areas constitute the primary source of stable nighttime illumination, which can be utilized to reflect the nighttime human activity and the conditions of public space lighting. The previous studies have focused on the evaluation of lighting environments in specific scenarios and the public's perception of these lighting environments. There has been limited analysis
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Assimilation of RCM data in the Canadian ice concentration analysis system Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-04 Alexander S. Komarov, Alain Caya, Lynn Pogson, Mark Buehner
The sea and lake ice concentration pan-Arctic analysis system at Environment and Climate Change Canada (ECCC) initializes both the short-range Arctic sea ice forecasting models and numerical weather prediction tools. In this study, our previously developed approach for deriving ice concentration from RADARSAT-2 was adjusted to become applicable to the RADARSAT Constellation Mission (RCM) data. This
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Tailored clustering method to identify quasi-regional sites Eng. Geol. (IF 7.4) Pub Date : 2024-04-04 Yongmin Cai, Jianye Ching, Kok-Kwang Phoon
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Geoelectric evidence for a wide spatial footprint of active extension in central Colorado Geology (IF 5.8) Pub Date : 2024-04-01 Benjamin S. Murphy, Jonathan Saul Caine, Paul A. Bedrosian, Jade W. Crosbie
Three-dimensional magnetotelluric (MT) imaging in central Colorado reveals a set of north-striking high-conductivity tracks at lower-crustal (50–20 km) depths, with conductive finger-like structures rising off these tracks into the middle crust (20–5 km depth). We interpret these features to represent saline aqueous fluids and partial melt that are products of active extensional tectonomagmatism. These
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Resolving pressure differences within the Grand Canyon Precambrian basement: Implications for Proterozoic tectonics Geology (IF 5.8) Pub Date : 2024-04-01 Suzanne Autrey-Mulligan, Chloe Bonamici, Michael L. Williams, Karl Karlstrom, Cailey B. Condit
Burial pressures (depths) within mountain belts place fundamental constraints on the growth and stabilization of continental crust. We report precise metamorphic pressures for ca. 1.7 Ga rocks from the Upper Granite Gorge (UGG) of the Grand Canyon (southwestern United States) and, for the first time, resolve pressure variations across this continuous exposure of mid-crustal rocks. We applied quartz-in-garnet
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Iron fertilization–induced deoxygenation of eastern equatorial Pacific Ocean intermediate waters during the Paleocene–Eocene thermal maximum Geology (IF 5.8) Pub Date : 2024-04-01 Xiaodong Jiang, Xiangyu Zhao, Xiaoming Sun, Andrew P. Roberts, Appy Sluijs, Yu-Min Chou, Weiqi Yao, Jieqi Xing, Weijie Zhang, Qingsong Liu
The Paleocene–Eocene thermal maximum (PETM), a transient period of global warming, is considered to be an important analog for future greenhouse conditions. It was accompanied by a significant carbon cycle perturbation. Although ocean deoxygenation across the PETM is reported widely, its mechanism in the open ocean remains uncertain. Here, we present magnetic and geochemical analyses of sediments from
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The PROLIB leaf radiative transfer model: Simulation of the dorsiventrality of leaves from visible to mid-wave infrared Remote Sens. Environ. (IF 13.5) Pub Date : 2024-04-03 Hanyu Shi, Stéphane Jacquemoud, Jingyi Jiang, Minqiang Zhou, Sophie Fabre, Andrew D. Richardson, Shuang Wang, Xuju Jiang, Zhiqiang Xiao
Many plant species have dorsiventral leaves that have significant differences in optical properties from one side to the other. Several studies have revealed that ignoring this asymmetry induces significant errors in plant canopy reflectance, and current leaf models simulating leaf dorsiventrality are limited to the 0.4–2.5 m wavelength range. This article, partly based on two recently collected datasets
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Investigating the toppling failure of anti-dip rock slopes containing non-persistent cross-joints via a strength-based fracture method Eng. Geol. (IF 7.4) Pub Date : 2024-04-03 Leitao Zhang, Shibin Tang
The toppling failure of anti-dip rock slopes is significantly affected by crack propagation from non-persistent cross-joints (NPCJs). In this study, a strength-based localized maximum stress (SLMS) criterion is adopted to model the toppling failure process caused by crack propagation in anti-dip rock slopes containing a set of NPCJs via the finite element method. The crack initiation sequence from
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Toppling stability of partially buried blocks in granite residual soil slope under extremely heavy rainfall condition Eng. Geol. (IF 7.4) Pub Date : 2024-04-03 Xiucheng Zhao, Xiaoyan Zhao, Hongwei Liu, Bernd Wünnemann, Gang Luo, Zongyao Yang
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Rare earth element transport and mineralization linked to fluids from carbonatite systems Geology (IF 5.8) Pub Date : 2024-04-01 E.A.A. Mororó, M. Berkesi, Z. Zajacz, T. Guzmics
Rare earth elements are critical constituents for modern technologies, and some of their largest natural resource deposits are related to carbonatite systems. However, the mechanisms leading to rare earth element mineralization and the role of magmatic fluids in carbonatite systems remain poorly understood. Here, we present the first in situ characterization of fluids and their trace-element compositions
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Duration of Sturtian “Snowball Earth” glaciation linked to exceptionally low mid-ocean ridge outgassing Geology (IF 5.8) Pub Date : 2024-04-01 Adriana Dutkiewicz, Andrew S. Merdith, Alan S. Collins, Ben Mather, Lauren Ilano, Sabin Zahirovic, R. Dietmar Müller
The Sturtian “Snowball Earth” glaciation (ca. 717–661 Ma) is regarded as the most extreme interval of icehouse climate in Earth’s history. The exact trigger and sustention mechanisms for this long-lived global glaciation remain obscure. The most widely debated causes are silicate weathering of the ca. 718 Ma Franklin large igneous province (LIP) and changes in the length and degassing of continental
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Mantle flow and olivine fabric transition in the Myanmar continental subduction zone Geology (IF 5.8) Pub Date : 2024-04-01 Enbo Fan, Yinshuang Ai, Stephen S. Gao, Yumei He, Kelly H. Liu, Mingming Jiang, Guangbing Hou, Shun Yang, Chit Thet Mon, Myo Thant, Kyaing Sein
One of the major advances in mineral physics and seismology is the realization that different olivine fabric types are functions of temperature, shear stress, and water content in oceanic subducting systems. The distribution of different olivine fabric types and geodynamic processes in the mantle wedge above a subducting continental slab remain poorly understood. Here, based on splitting analysis of
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Nannofossil imprints across the Paleocene–Eocene thermal maximum Geology (IF 5.8) Pub Date : 2024-04-01 Sam M. Slater, Paul R. Bown, Phillip E. Jardine
The Paleocene–Eocene thermal maximum (PETM; ca. 56 Ma) geological interval records a marked decline in calcium carbonate (CaCO3) in seafloor sediments, potentially reflecting an episode of deep- and possibly shallow-water ocean acidification. However, because CaCO3 is susceptible to postburial dissolution, the extent to which this process has influenced the PETM geological record remains uncertain
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Increase in magma supply to Sakurajima volcano’s (Japan) shallow magma chamber over the past 500 years Geology (IF 5.8) Pub Date : 2024-04-01 Christian Huber, Atsushi Toramaru
Constraining the magma supply to a subvolcanic reservoir is crucial to characterizing unrest and evaluating the potential for a forthcoming eruption. With the advent of GPS, tiltmeters, and satellite interferometry, it has been possible to infer changes in the supply rate of magma to shallow reservoirs over time scales of as much as decades. While these methods have impacted our ability to characterize
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Bulldoze and rebuild: Modifying cratonic lithosphere via removal and replacement induced by continental subduction Geology (IF 5.8) Pub Date : 2024-04-01 Lingtong Meng, Yang Chu, Wei Lin, Ross N. Mitchell, Liang Zhao
Establishing the mechanisms for craton modification is critical for understanding cratonic stability and architecture. It is well known that oceanic subduction and mantle plumes can destroy and destabilize the overriding cratonic lithosphere, but the role of continental subduction in craton modification remains unclear. In the North China craton (NCC), which experienced deep continental subduction
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A late refugium for Classopollis in the Paleocene Lower Wilcox Group along the Texas Gulf Coast Geology (IF 5.8) Pub Date : 2024-04-01 Vann Smith, Angela Hessler, Lorena Moscardelli, David Bord, Iulia Olariu, Maria Antonieta Lorente, Evan Sivil, Xiuju Liu
We report a new ecological refugium for the Cheirolepidiaceae family (pollen form genus Classopollis) in the Paleocene Lower Wilcox Group in the Gulf Coast of southeastern Texas based on palynological analysis of four wells. The Cheirolepidiaceae were once thought to have gone extinct at the Cretaceous–Paleogene (K/Pg) boundary or earlier in North America; however, similar ecological refugia for this