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Permian tectonic switch of the southern Central Asian Orogenic Belt: Constraints from magmatism in the southern Alxa region, NW China Open Geosci. (IF 2.0) Pub Date : 2024-03-16 Erteng Wang, Xinwei Zhai, Yaoshen Huang, Chengze Li, Ruihuan Su, Lei Wu, Gaorui Song, Zhiang Guo, Wanfeng Chen, Jinrong Wang
Late Paleozoic plutons are widely distributed in the Alxa region, southernmost Central Asian Orogenic Belt, and provided an important clue in constraint for the closing time of the Paleo-Asian Ocean (PAO). In this article, we present new zircon U-Pb ages and whole-rock geochemical data from the Permian Huoersen and Zongnaishan plutons in the southern Alxa region. The Huoersen gabbro (ca. 285 Ma) is
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Evaluation of Viaducts’ contribution to road network accessibility in the Yunnan–Guizhou area based on the node deletion method Open Geosci. (IF 2.0) Pub Date : 2024-03-15 Zichen Wang, Changxiu Cheng, Lanlan Guo, Shan Liu
It is necessary to evaluate the construction effect of viaducts and identify the viaducts that play a key role in road networks. Based on the node deletion method, this article proposes a method to identify the importance of viaducts in road networks. After applying this method to simulate the importance of viaducts in the highway networks in Yunnan and Guizhou Provinces from 2001 to 2020, the results
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Lower limits of physical properties and classification evaluation criteria of the tight reservoir in the Ahe Formation in the Dibei Area of the Kuqa depression Open Geosci. (IF 2.0) Pub Date : 2024-03-15 Caiyuan Dong, Wei Yang, Jun Li, Dejiang Li, Xueqiong Wu, Weidong Miao, Haihua Zhu, Xilin Yang
The Ahe Formation in the Dibei Area is a key natural gas exploration formation in the northern structural belt. Based on geological data such as formation tests and physical properties, the tight reservoirs were determined using the empirical statistics method, distribution function method, oil-bearing occurrence method, and bound fluid saturation method reasonably. The lower limit of the oil-bearing
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Flood risk assessment, a case study in an arid environment of Southeast Morocco Open Geosci. (IF 2.0) Pub Date : 2024-03-14 Khadija Diani, Mohamed Hafedh Hamza, Hicham Elbelrhiti, Ilias Kacimi, Fatima Zahra Faqihi, Ali Torabi Haghighi, Mohamed El Amrani, Youssef Hahou, Lhoussaine Masmoudi, Ousaid Lahcen, Fahad Alshehri, Mohamed Elhag
Since the early 1980s, several regions of Morocco have experienced alternating series of wet and dry periods related to climate change, with significant consequences for the country’s economy. This study aims to map flood hazards by using a hydraulic modeling approach, with a specific focus on the Oued (river) Zaouiat Sidi Hamza passing through Zaouiat Sidi Hamza township belonging to the High Ziz
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Enhancing attapulgite and cement-modified loess for effective landfill lining: A study on seepage prevention and Cu/Pb ion adsorption Open Geosci. (IF 2.0) Pub Date : 2024-03-13 Zhengrui Zhang, Siti Jahara Matlan, Lili Zhang, Ahad Amini Pishro, Mojdeh Amini Pishro, Xian Gao, Nazaruddin Abdul Taha, Yuxin Zhou
This study aims to use attapulgite (ATT) and cement to modify loess as the lining material of landfills in loess areas and to exert the adsorption property of modified loess to ensure seepage prevention. It provides a safe, efficient, low-cost anti-seepage material for constructing a landfill in a loess area. For ATT-modified loess, when the content of ATT is less than 10%, the decrease rate of permeability
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Platform margin belt structure and sedimentation characteristics of Changxing Formation reefs on both sides of the Kaijiang-Liangping trough, eastern Sichuan Basin, China Open Geosci. (IF 2.0) Pub Date : 2024-03-13 Mingtao Zuo, Jiangong Wang, Xiujian Sun, Zhonggui Hu, Yadong Bai, Wei Yang, Hongzhe Li
This article discusses the types and characteristics of platform margin belts on both sides of the Kaijiang-Liangping trough in the Sichuan Basin during the Late-Permian Changhsingian age combined with the seismic reflection characteristics. The results show that there are four types of platform margin belts on both sides of the Kaijiang-Liangping trough: (1) steep-slope, single-platform margin belts
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Improved deep learning segmentation of outdoor point clouds with different sampling strategies and using intensities Open Geosci. (IF 2.0) Pub Date : 2024-03-13 Harintaka Harintaka, Calvin Wijaya
The rapid growth of outdoor digital twin data sets and advancements in 3D data acquisition technology have sparked interest in improving segmentation performance using deep learning. This research aims to analyze and evaluate different sampling strategies and optimization techniques while exploring the intensity information of outdoor point cloud data. Two sampling strategies, random and stratified
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Integrated geophysical approach for detection and size-geometry characterization of a multiscale karst system in carbonate units, semiarid Brazil Open Geosci. (IF 2.0) Pub Date : 2024-03-08 David L. de Castro, Francisco H. R. Bezerra, Josibel G. Oliveira Jr
The karstification of carbonate rocks creates 3D maze voids that are normally controlled by fracture networks and sedimentary bedding. The spatial distribution and density of karst systems are usually complex and difficult to predict, demanding multidisciplinary studies at different scales of investigation to determine the spatial distribution and density of karst features and their possible links
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Zircon U–Pb ages of the Paleozoic volcaniclastic strata in the Junggar Basin, NW China Open Geosci. (IF 2.0) Pub Date : 2024-03-05 Fan Chun
A large set of Paleozoic volcaniclastic rocks is exposed in the northwestern margin of the Junggar Basin from the southern part of the Central Asian Orogenic Belt. The Carboniferous volcaniclastic strata in this area have been studied in depth, and an accurate chronostratigraphic framework of these strata has been established. However, there is a lack of sufficient geochronological data for the deposition
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Deep fault sliding rates for Ka-Ping block of Xinjiang based on repeating earthquakes Open Geosci. (IF 2.0) Pub Date : 2024-03-02 Chaojun Gao, Daiqin Liu, Jie Li, Chunyan Song, Gulizinati Yideresi, Ailixiati Yushan
The seismically active Ka-Ping Block within Xinjiang, China, represents a zone of potential earthquake hazards, and existing surface measurements cannot fully reflect the area’s sub-surface slip rates. To determine these slip rates and characterize the level of hazard that the study area may face in future years, using a cross-correlation of waveforms, we identified 432 repeat sequences along large
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Spatial and temporal changes in ecosystem services value and analysis of driving factors in the Yangtze River Delta Region Open Geosci. (IF 2.0) Pub Date : 2024-03-02 Wei Zhang, Fang-Fang Wang, Wei Shan
Based on land use classification data for the Yangtze River Delta region in 2000, 2015, and 2020, this study aims to explore the spatial and temporal evolution of ecosystem services value (ESV) in the region. By analyzing the land use structure and its dynamic changes, an ESV model is constructed. Furthermore, the study utilizes a geodetector to analyze the driving factors of ESV in the Yangtze River
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Random forest and artificial neural network-based tsunami forests classification using data fusion of Sentinel-2 and Airbus Vision-1 satellites: A case study of Garhi Chandan, Pakistan Open Geosci. (IF 2.0) Pub Date : 2024-02-24 Shabnam Mateen, Narissara Nuthammachot, Kuaanan Techato
This article proposes random forest algorithm (RFA), multi-layer perception (MLP) artificial neural network (ANN), and support vector machine (SVM) method for classifying the fused data of Sentinel-2, Landsat-8, and Airbus Vision-1 satellites for the years 2016 and 2023. The first variant of fusion is performed for Sentinel-2 and Landsat-8 data to sharpen it to 10 m spatial resolution, while in the
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Differences in urban daytime and night block vitality based on mobile phone signaling data: A case study of Kunming’s urban district Open Geosci. (IF 2.0) Pub Date : 2024-02-23 Yang Wang, Youyang You, Jinyu Huang, Xiaoli Yue, Guiquan Sun
Exploring the pattern of block vitality within cities and its influencing factors is an important topic in urban vitality research, which has great significance in promoting high-quality urban development. However, existing research has paid little attention to the spatial difference characteristics of daytime and night urban vitality and the differences in their influencing factors. Using the urban
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Petrogenesis of Jurassic granitic rocks in South China Block: Implications for events related to subduction of Paleo-Pacific plate Open Geosci. (IF 2.0) Pub Date : 2024-02-22 Meng-Yu Tian, Yong-Jun Di
Frequent magmatic intrusion and eruption during the early Yanshanian in South China formed a unique and diverse igneous rock assemblage, mainly comprising granite, rhyolite, and some basic rocks. Nevertheless, the tectonic regime responsible for the formation of these granitic rocks remains controversial. The comprehensive available data suggest that the Jurassic granitic rocks formed during the period
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Adolescents’ consumption intentions toward leisure tourism in high-risk leisure environments in riverine areas Open Geosci. (IF 2.0) Pub Date : 2024-02-22 Hsiao-Hsien Lin, Tzu-Yun Lin, Chih-Cheng Lo, Chao-Yen Lin, Su-Fang Zhang, Po-Hsuan Wu, Qi-Yuan Li, I-En Tsai, Xue-Qi Yan, Jing-Hui Huang, Gan-Hong Chen
This study investigated the effects of food culture on the economic and ecological development of rural rivers and adolescents’ intentions toward tourism in high-risk leisure environments. The study applied a mixed-methods design. A questionnaire was designed and distributed to recruited participants, and 900 responses were collected and analyzed, with SPSS 26.0 used to perform basic statistical validation
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Impact of fully rotating steel casing bored pile on adjacent tunnels Open Geosci. (IF 2.0) Pub Date : 2024-02-16 Jingran Zhang, Dajiang Geng, Xiaoxia Zhao, Zhicheng Bai, Mingjian Long
Based on the theoretical model of a soil plug column, the stress analysis of the soil plug column during the spinning process of steel casing is carried out, and the critical depth of the soil column is determined using the stress and torsional shear ratio of the soil column. The effect of factors such as casing wall thickness, surface load, and steel casing spinning speed on the critical depth of
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Monitoring of mangrove forests vegetation based on optical versus microwave data: A case study western coast of Saudi Arabia Open Geosci. (IF 2.0) Pub Date : 2024-02-15 Mohammed H. Aljahdali, Baradin Adisu, Esubalew Adem, Anis Chaabani, Silvena Boteva, Lifu Zhang, Mohamed Elhag
Normalized difference vegetation index (NDVI) is one of the parameters of vegetation that can be studied by remote sensing of land surface with Sentinel-2 (S-2) satellite image. The NDVI is a nondimensional index that depicts the difference in plant cover reflectivity between visible and near-infrared light and can be used to measure the density of green on a piece of land. On the other hand, the dual-pol
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Multisource remote sensing image fusion processing in plateau seismic region feature information extraction and application analysis – An example of the Menyuan Ms6.9 earthquake on January 8, 2022 Open Geosci. (IF 2.0) Pub Date : 2024-02-15 Nana Zhang, Long Li, Jun Li, Gang Jiang, Yujun Ma, Yuejing Ge
A 6.9 magnitude earthquake hit Menyuan County, Haibei Prefecture, Qinghai Province, at 01:45 PM Beijing time on January 8, 2022 (17:45 PM GMT time on January 7, 2022). To explore the magnitude of the earthquake deformation and the affected area, this work combined optical remote sensing interpretation, interferometric synthetic aperture radar (InSAR) coseismic deformation extraction, and field surveys
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Microfacies analysis of marine shale: A case study of the shales of the Wufeng–Longmaxi formation in the western Chongqing, Sichuan Basin, China Open Geosci. (IF 2.0) Pub Date : 2024-02-15 Yana Chen, Jia Liu, Nan Wang, Yiqing Zhu, Wei Lin, Quansheng Cai, Yuchuan Chen, Mingtao Li
It is a great challenge for sedimentologists to perform the facies analysis of shales due to the lack of macro-structures and high heterogeneity in shale, and thus, conventional research methods are poorly applied in the field of shale sedimentology. To establish a typical depositional model for marine shales, a new method adopted from marine carbonate rocks was employed to perform the microfacies
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Identification of magnetic mineralogy and paleo-flow direction of the Miocene-quaternary volcanic products in the north of Lake Van, Eastern Turkey Open Geosci. (IF 2.0) Pub Date : 2024-02-15 Sercan Kayın, Turgay İşseven
One of the major challenges facing geochemistry, petrology, and volcanology researchers is the difficulty in determining the origin and paleo-flow directions of igneous and volcanic rocks. It is not possible to clearly determine origins and paleo-flow directions in areas with numerous volcanic centers. Anisotropy of magnetic susceptibility (AMS) is a valuable method that provides insights into the
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Water transportation planning in connection with extreme weather conditions; case study – Port of Novi Sad, Serbia Open Geosci. (IF 2.0) Pub Date : 2024-01-30 Nenad Komazec, Svetislav Šoškić, Aleksandar Milić, Katarina Štrbac, Aleksandar Valjarević
The Danube has a length of 588 km in the Republic of Serbia. The water transport on this river is underused. The hazardous events have a great impact on the traffic on this river, and the understanding of these events is of great importance. This study focuses on hazardous events on the Danube with the main focus on the port of Novi. The hazardous events used in this study are extreme air temperatures
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The research of common drought indexes for the application to the drought monitoring in the region of Jin Sha river Open Geosci. (IF 2.0) Pub Date : 2024-01-25 Xingyu Zhou, Xinhui Xu
Based on MODIS data from 2010 to 2020 and precipitation, air temperature, and soil moisture data of 33 meteorological stations in Jinsha River Basin from 1990 to 2020, the applicability of different remote sensing drought indexes in Jinsha River Basin was studied. These indexes include temperature condition index (TCI) and temperature vegetation drought index (TVDI), the results of vegetation condition
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Evolutionary game analysis of government, businesses, and consumers in high-standard farmland low-carbon construction Open Geosci. (IF 2.0) Pub Date : 2024-01-25 Yuting Dai, Jinbao Liu, Yichun Du
Soil is an important carbon reservoir, and high-standard farmland construction projects have significant potential to promote low-carbon development. In order to study the management and implementation of low-carbon production in high-standard farmland construction projects, the tripartite evolution game model of government, business, and consumer is constructed based on the tripartite bounded rationality
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On the use of low-frequency passive seismic as a direct hydrocarbon indicator: A case study at Banyubang oil field, Indonesia Open Geosci. (IF 2.0) Pub Date : 2024-01-25 Awali Priyono, Rexha Verdhora Ry, Andri Dian Nugraha, Aditya Lesmana, Billy S. Prabowo, Yayan M. Husni, A. Ardianto, Nyoman Witarsa, Buyung I. Sutan
Low-frequency passive seismic (LFPS), discussed in recent years, has emphasized a strong correlation between the spectral properties and the presence of hydrocarbon reservoirs. While the theoretical background supporting this phenomenon is still debated, its application has been popular in Indonesia and exposes broad possibilities for exploration. In this study, we conducted a survey at an oil field
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Theoretical magnetotelluric response of stratiform earth consisting of alternative homogeneous and transitional layers Open Geosci. (IF 2.0) Pub Date : 2024-01-23 Hongzhi Miao, Huifang Ming, Xuelu Xiao, Bolan Dai, Xiaowei Yang
The magnetotelluric (MT) responses are explicitly solved for a stratiform earth containing multiple transitional layers in which the conductivity varies linearly with depth. In the model under consideration, any one homogeneous layer with constant conductivity or transitional one may be absent in the geometry. The traditional one-dimensional (1D) models with sharp boundaries will be obtained if all
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Introducing an intelligent multi-level retrieval method for mineral resource potential evaluation result data Open Geosci. (IF 2.0) Pub Date : 2024-01-05 Li Chaokui, Liu Mingxi, Guo Ruirong, Zhao Yanan, Yang Wentao, Zhang Xinchang
The geological data of the mineral resource potential evaluation results (MRPERs) are diverse and extremely large; efficiently retrieving data remains a challenging problem. In this work, a new way of using the Hadoop platform is proposed. The Hadoop distributed file system is used to store the massive data and construct the data storage model of geological and mineral resources. Using a distributed
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The interrelation of natural diversity with tourism in Kosovo Open Geosci. (IF 2.0) Pub Date : 2023-12-29 Fitim Humolli, Cezar Morar, Ferat Krasniqi, Shpejtim Bulliqi
The plant and animal wealth of a place, region, or state represents a significant component of the geographic-natural tourist offer. Tourist routes are concentrated specifically on areas with a variety of plants, rich vegetation, and diverse animal world. The Balkan Peninsula in general, and Kosovo in particular, is characterized by high geodiversity and biodiversity value. This feature can serve as
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Monitoring drought dynamics using remote sensing-based combined drought index in Ergene Basin, Türkiye Open Geosci. (IF 2.0) Pub Date : 2023-12-29 Kerim Aykut Gümüş, Filiz Bektaş Balçık, Tolga Esetlili, Ceyhan Kahya
Remote sensing-based approaches have gained widespread usage in drought monitoring studies. However, relying on single-variable drought indices may be inadequate to provide a comprehensive understanding of drought dynamics. In this study, principal component analysis was employed to derive a combined index, namely, the combined drought index (CDI), from multiple indices such as vegetation condition
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Assessment of geosites as a basis for geotourism development: A case study of the Toplica District, Serbia Open Geosci. (IF 2.0) Pub Date : 2023-12-29 Marko Ivanović, Tin Lukić, Nikola Milentijević, Vojkan Bojović, Aleksandar Valjarević
Toplica district represents an area in Southern Serbia with significant forms of geoheritage that have not been valorized yet. The aim of this pioneering study is to systematically analyze and evaluate all manifestations of the geodiversity in the Toplica district. Based on the geological importance, degree of attractiveness, and size, a total of six geosites were selected. The main goal of the study
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IG-YOLOv5-based underwater biological recognition and detection for marine protection Open Geosci. (IF 2.0) Pub Date : 2023-12-29 Jialu Huo, Qing Jiang
Underwater biological detection is of great significance to marine protection. However, the traditional target detection techniques have some challenges, such as insufficient feature extraction for small targets and low feature utilization rate. To address these challenges, an underwater biological detection model IG-YOLOv5 based on the idea of feature reuse is proposed. An Improved-Ghost module with
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Pre-collisional architecture of the European distal margin: Inferences from the high-pressure continental units of central Corsica (France) Open Geosci. (IF 2.0) Pub Date : 2023-12-28 Maria Di Rosa, Chiara Frassi, Michele Marroni, Luca Pandolfi, Alessandro Malasoma, Francesca Meneghini
The Lower Units of Alpine Corsica, France, are fragments of continental crust strongly deformed and metamorphosed under high-pressure metamorphic conditions. Three slices of Lower Units are well exposed in the area between the Asco and Tavignano valleys, Central Corsica. Despite their complex structural setting, they provide the opportunity for a reconstruction of the pristine stratigraphic setting
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Influence of nappe structure on the Carboniferous volcanic reservoir in the middle of the Hongche Fault Zone, Junggar Basin, China Open Geosci. (IF 2.0) Pub Date : 2023-12-26 Zhengyu Chen, Qirong Qin, Hu Li, Jiling Zhou, Jie Wang
This work presents an in-depth examination of the Carboniferous volcanic reservoir within the CH471 well area, situated in the central portion of the Hongche fault zone on the northwestern margin of the Junggar Basin. Leveraging seismic data and well connection comparisons, we scrutinize the tectonic evolution model and elucidate the impact of the nappe structure of the Hongche fault zone on the volcanic
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Relationship between annual soil erosion and surface runoff in Wadi Hanifa sub-basins Open Geosci. (IF 2.0) Pub Date : 2023-12-26 Hassan Alzahrani
Soil erosion is the major environmental risk that causes topsoil loss, which decreases fertility in agricultural land. Spatial estimation of soil erosion is essential for conserving land resources and for developing control plans. This study evaluated soil erosion in 17 sub-basins of the Wadi Hanifa catchment using the Gavrilović model. The soil erosion rate is categorized into three classes based
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Dynamic analysis of MSE wall subjected to surface vibration loading Open Geosci. (IF 2.0) Pub Date : 2023-12-26 Christine P. Langcuyan, Shamsher Sadiq, Tae-Woong Park, Myoung-Soo Won
Extensively used Mechanically Stabilized Earth (MSE) walls in Rail Transportation System (RTS) are vulnerable to surface vibrations generated by moving vehicles. Hence, it is necessary to consider the effects of surface vibrations during the design of MSE walls for RTS. Steel-reinforced panel-type MSE walls are shown to perform well during vibration loading, but costly steel materials have led to greater
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Varying particle size selectivity of soil erosion along a cultivated catena Open Geosci. (IF 2.0) Pub Date : 2023-12-22 Judit Alexandra Szabó, Boglárka Keller, Csaba Centeri, István Gábor Hatvani, József Kovács, Zoltán Szalai, Gergely Jakab
Sheet erosion is a complex multi-factor-dependent process with high spatial heterogeneity on hillslopes. Although the individual factors have been well studied, their aggregated effect on size-selective erosional processes is highly uncertain. Therefore, this study concentrates on the aggregate size distribution and effective particle size distribution (PSD) of the aggregates in the soil loss, collected
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Passenger flow forecast of tourist attraction based on MACBL in LBS big data environment Open Geosci. (IF 2.0) Pub Date : 2023-12-19 Qili Tang, Li Yang, Li Pan
The existing scenic spot passenger flow prediction models have poor prediction accuracy and inadequate feature extraction ability. To address these issues, a multi-attentional convolutional bidirectional long short-term memory (MACBL)-based method for predicting tourist flow in tourist scenic locations in a location-based services big data environment is proposed in this study. First, a convolutional
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Temporal dynamics of green urban areas in Romania. A comparison between spatial and statistical data Open Geosci. (IF 2.0) Pub Date : 2023-12-19 Andra-Cosmina Albulescu, Daniela Larion
The social function and the ecosystem services provided by green urban areas (GUAs) have long been acknowledged by both the scientific community and the public. They become even more relevant to urban sustainability and human welfare in the post-pandemic world, which still has to confront social, environmental, and energy-related issues. This study aims to provide an example of how to perform a temporal
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Predicting copper-polymetallic deposits in Kalatag using the weight of evidence model and novel data sources Open Geosci. (IF 2.0) Pub Date : 2023-12-16 Wei Xi, YuanYe Ping, JinTao Tao, Chaoyang Liu, Junru Shen, YaWen Zhang
The Kalatag Ore Cluster Area, located in the Eastern Tianshan metallogenic belt of Xinjiang, stands out as a notable copper polymetallic mineralization zone, recognized for its diverse ore types and untapped potential. Despite the foundational nature of traditional exploration methods, they have not fully exploited this potential. Addressing this, our study leverages modern geospatial technologies
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Walkaway vertical seismic profiling first-arrival traveltime tomography with velocity structure constraints Open Geosci. (IF 2.0) Pub Date : 2023-12-16 Lu Cai, Zhang Chunlong, Zhang Zhibin
Walkaway vertical seismic profiling (WVSP) is known for its high level of credibility in obtaining the relationship between first-arrival traveltime and detector depth through first-arrival picking. This relationship can be utilized for seismic velocity model inversion to improve velocity model accuracy and rationality. Here, we present a WVSP first-arrival velocity model with velocity structure constraints
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Study on the evaluation system and risk factor traceability of receiving water body Open Geosci. (IF 2.0) Pub Date : 2023-12-16 Yang Qiu, Xiaoming Ren, Zixuan Wang, Yukun Zhou
The risk factor of the receiving water body is one of the important factors that affect the self-purification ability of the water body. Analyzing the concentration and removal rate of the target substances such as suspended solid (SS), chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP) in the receiving water body during the life cycle can trace the risk factor. Based on this
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Spatiotemporal changes in land use and residential satisfaction in the Huai River-Gaoyou Lake Rim area Open Geosci. (IF 2.0) Pub Date : 2023-12-13 Jianwei Yu, Chenyang Wang, Xiaoting Yang, Hongshen Chen, Limin Liang
This research investigates the dynamic interplay between land use changes and landscape ecological risks in China’s Jiangsu Province, specifically focusing on the Huai River-Gaoyou Lake region. Leveraging multi-temporal remote sensing data from 2000 to 2020, we conducted a comprehensive analysis of shifting land cover patterns and their implications. Employing geostatistical techniques, we developed
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Environmental health risk assessment of urban water sources based on fuzzy set theory Open Geosci. (IF 2.0) Pub Date : 2023-12-11 Di Liao, Yongsheng Jin, Xiao Zhang
Water pollution and protection of water resources have become an urgent task for humanity today and are also important components of environmental risk assessment. In response to the problems of high risk level and low risk credibility in the current environmental health risk assessment of urban water sources, this article aims to use fuzzy set theory to comprehensively evaluate the environmental quality
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Petrogenesis of the Morobe Granodiorite and their shoshonitic mafic microgranular enclaves in Maramuni arc, Papua New Guinea Open Geosci. (IF 2.0) Pub Date : 2023-12-11 Takashi Hoshide, Angela Bokuik, Tatsuki Ishikawa
The Miocene tectonics of Papua New Guinea, where subduction, arc-continent collision, and changes in subduction direction are considered to have occurred, is very complex and various tectonic models have been proposed. The Maramuni arc, active in the Miocene, is composed of a chain of granitoid bodies. As the chain-like distribution indicates the generation of igneous activities in a wide range of
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Spatial distribution of urban basic education resources in Shanghai: Accessibility and supply-demand matching evaluation Open Geosci. (IF 2.0) Pub Date : 2023-12-11 Hongfu Yuan, Xiangguo Yang
This article focuses on Shanghai as a case study and utilizes various factors such as points of interest, nighttime lights, land use, road networks, and Digital Elevation Model to examine the spatial distribution of population. A random forest model is constructed to decompose the population of streets in 2022 into a 100-m grid. The study then assesses the spatial accessibility of basic education resources
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Rainfall-induced transportation embankment failure: A review Open Geosci. (IF 2.0) Pub Date : 2023-12-08 Xu Linrong, Aliyu Bamaiyi Usman, Al-Amin Danladi Bello, Li Yongwei
Rainfall is one of the leading causes of transportation embankment failure. Similarly, the fill material properties and the loading conditions of the embankment serve as principals for assessing the mechanisms of potential failures that are derived from rainfall-related events. These events affect the hydro-mechanical behaviors of embankment fills and cast doubt on the construction and service life
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Query optimization-oriented lateral expansion method of distributed geological borehole database Open Geosci. (IF 2.0) Pub Date : 2023-12-08 Qingjia Luo
In order to reduce the resource occupancy and retrieval efficiency of geological drilling databases, this study proposes a distributed horizontal expansion method for query optimization of geological drilling databases by constructing a comprehensive geological data subtree, analyzing the characteristics of distributed databases and elements in geological databases, and quickly retrieving data resources
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Noise masking of near-surface scattering (heterogeneities) on subsurface seismic reflectivity Open Geosci. (IF 2.0) Pub Date : 2023-12-02 Hussein M. Harbi, Ali H. Atef
Near-surface velocity variations are the main cause of seismic scattering in exploration seismology. Many studies create the near-surface heterogeneity as velocity models that have random velocity distribution, random objects, or irregular subsurface topography to study and mitigate the resultant scattering effects of the near-surface layer. Von Kármán (self-similar) method is a known method in the
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The effect of weathering on drillability of dolomites Open Geosci. (IF 2.0) Pub Date : 2023-12-02 Candan Bilen, Utku Sakız
In this study, an aggregate quarry was investigated in order to understand the impact of weathering phenomenon on the drillability of dolomite stones, respectively. Samples were collected from the study area and analyzed in terms of physicomechanical tests (specific gravity, dry unit weight, uniaxial compressive strength, point load index (Is50), and Brazillian tensile strength). The drillability of
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Study on spatial pattern of tourism landscape resources in county cities of Yangtze River Economic Belt Open Geosci. (IF 2.0) Pub Date : 2023-11-30 Shuo Song, Hongying Wang, Ying Meng
Identifying the classification of tourism landscape resources and accurately studying their spatial pattern are of great significance to the ecological environment protection, industrial transformation, and economic growth of the Yangtze River Economic Belt. Taking Zixi County of Jiangxi Province as the research area, based on field survey and network collection, the scientific statistical classification
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Detection and characterization of lineaments using gravity data in the south-west Cameroon zone: Hydrogeological implications Open Geosci. (IF 2.0) Pub Date : 2023-11-28 Ghislain Nkamgan Ndongmo, Fidèle Koumetio, François Ngapgue, Ernest Léontin Lemoubou
In Cameroon, the drying up of wells and boreholes during the dry season is characterized by a lack of knowledge about the surface structures of the subsoil and the spatial distribution of groundwater. In this study, we propose to use gravity data to detect and characterize the surface structures of the south-west (SW) Cameroon and to analyze their hydrogeological implications. The application of the
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Geochemical evaluation of the carbonaceous shale associated with the Permian Mikambeni Formation of the Tuli Basin for potential gas generation, South Africa Open Geosci. (IF 2.0) Pub Date : 2023-11-27 George Oluwole Akintola
The increasing demand for energy and global commitment to reduce CO2 emissions to mitigate climate change has spurred countries to pursue unconventional hydrocarbon generation for power production. The investigation of the carbonaceous shale from the Permian Mikambeni Formation of the Tuli Basin in South Africa aims to assess the potential for gas generation. The Rock-Eval 6 pyrolysis of the studied
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Water resources utilization and tourism environment assessment based on water footprint Open Geosci. (IF 2.0) Pub Date : 2023-11-15 Juanjuan Su
Purpose With population growth and economic development, global Water Resources (WR) are becoming increasingly scarce. As an important consumer sector, the tourism industry is increasingly consuming and polluting WR. How to reasonably utilize WR and protect the water environment has become an important issue for the sustainable development of the current tourism industry. Methods Based on the Water
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Numerical study on the group wall effect of nodular diaphragm wall foundation in high-rise buildings Open Geosci. (IF 2.0) Pub Date : 2023-11-15 Lijuan Wang, Qihua Zhao, Jiujiang Wu
As a new type of foundation, the nodular diaphragm wall (N-D wall) has large transverse stiffness and high bearing capacity, with low noise and low vibration, which is suitable for high-rise buildings in cities with limited land area. The reduction coefficient of each load composition under the same displacement conditions and the ABAQUS finite element numerical analysis software are introduced to
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Loess and geotourism potential of the Braničevo District (NE Serbia): From overexploitation to paleoclimate interpretation Open Geosci. (IF 2.0) Pub Date : 2023-11-15 Aleksandar Antić, Milica G. Radaković, Miloš Marjanović, Slobodan B. Marković, Zoran M. Perić, Velibor Spalević, Oliver Momčilović, Milica Kostadinović, Rastko Marković, Nemanja Tomić
The use of loess as a resource for paleoclimatic research is quite well established. In Serbia, a significant number of loess sequences have been preserved in old brickyards. The results of the previously conducted research indicate extremely valuable data that enable a better understanding of the mid- to late Pleistocene climatic evolution in this part of Europe, as well as human dispersal from Africa
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Petrogenesis of the Sukadana Basalt based on petrology and whole rock geochemistry, Lampung, Indonesia: Geodynamic significances Open Geosci. (IF 2.0) Pub Date : 2023-11-15 Luhut Pardamean Siringoringo, Benyamin Sapiie, Alfend Rudyawan, I Gusti Bagus Eddy Sucipta
The petrogenesis of Sukadana Basalt remains an enigma till present. Major and trace element data are analyzed from Sukadana Basalt lava, located at East Lampung, Sumatra, to study the processes involved in the petrogenesis of the erupted magmas and the origin of mantle source compositions. The Sukadana Basalt display SiO2 (48.1–52.5 wt%), MgO (5.3–9.3 wt%), TiO2 (1.3–2.6 wt%), P2O5 (0.2–0.6 wt%), and
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Analysis of heavy pollution weather in Shenyang City and numerical simulation of main pollutants Open Geosci. (IF 2.0) Pub Date : 2023-11-13 Yunfeng Ma, Huijie Zhao, Lei Feng, Siyu Jin, Di Zhao, Shuai Wang, Qiyao Liu, Kunyu Gao, Zhengqing Xu
In the present research, a statistical analysis of all pollution incidents occurring from 2015 to 2019 in the cities of the urban agglomeration centered on Shenyang was performed. The results indicated that heavy pollution mainly occurred during the heating season, and the main pollutants were (particulate matter) PM2.5 and PM10. It was also determined that the heavy pollution that occurred during
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Forest biomass assessment combining field inventorying and remote sensing data Open Geosci. (IF 2.0) Pub Date : 2023-11-13 Mohammad Qasim, Elmar Csaplovics, Mike Harvey Salazar Villegas
Forests offer high potential for the fight against climate change. However, forests are faced with increased deforestation. REDD+ is a financial mechanism that offers hope to developing countries for tackling deforestation. Aboveground (AGB) estimation, however, is necessary for such financial mechanisms. Remote sensing methods offer various advantages for AGB estimation. A study, therefore, was conducted
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Road cut slope stability analysis for static and dynamic (pseudo-static analysis) loading conditions Open Geosci. (IF 2.0) Pub Date : 2023-11-13 Leta Meko, Yadeta C. Chemeda, Bikila Meko
Slope instability has been identified as one of the most natural and man-made disasters that can lead to the life of humans in danger and enormous loss of capital. The roads which pass on the hilly and mountainous terrains are frequently affected by slope failures since hilly and mountainous areas are characterized by variable topographical, geological, hydrological, and land-use conditions. Slope
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Late Jurassic Haobugao granites from the southern Great Xing’an Range, NE China: Implications for postcollision extension of the Mongol–Okhotsk Ocean Open Geosci. (IF 2.0) Pub Date : 2023-11-13 Jianda Li, Yue Tian, Yuqi Cheng
The Mongolia-Okhotsk tectonic regime had a significant impact on the tectonic evolution of Northeastern (NE) China. However, there is no consensus on the role of this regime in the geological evolution of the Xing’an Massif during the late Mesozoic. This article presents the results of zircon U–Pb geochronology, whole-rock major and trace-element geochemistry, and zircon Hf isotopic compositions for
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Numerical investigation of gravity-grouted soil-nail pullout capacity in sand Open Geosci. (IF 2.0) Pub Date : 2023-11-08 Myoung-Soo Won, Shamsher Sadiq, Sung-Uk Seo, Jun-Yong Park
Soil nailing reinforces soil slopes and retaining walls by installing reinforcing elements into the soil, which rely on bonding strength with surrounding soil to transfer axial forces. This study focuses on the pullout capacity evaluation of grouted soil-nailing, which is conventionally determined through costly and time-intensive site-specific field pullout tests or simplified design methods, Federal