Results in Earth Sciences最新文献

Integrating GIS-based AHP and groundwater quality assessment to delineate groundwater potential zones in the Rontu Watershed, West Nusa Tenggara, Indonesia 结合基于gis的AHP和地下水质量评价，划定了印度尼西亚西努沙登加拉Rontu流域的地下水潜力区

Results in Earth Sciences Pub Date : 2025-06-19 DOI: 10.1016/j.rines.2025.100110

Pascalia Vinca Alvando , Dede Rohmat , Faizal Immaddudin Wira Rohmat , Dasapta Erwin Irawan , Abdullah Husna , Wendi Harjupa , Fauzan Ikhlas Wira Rohmat , Mutiara Indah Nur Rohman

{"title":"Integrating GIS-based AHP and groundwater quality assessment to delineate groundwater potential zones in the Rontu Watershed, West Nusa Tenggara, Indonesia","authors":"Pascalia Vinca Alvando , Dede Rohmat , Faizal Immaddudin Wira Rohmat , Dasapta Erwin Irawan , Abdullah Husna , Wendi Harjupa , Fauzan Ikhlas Wira Rohmat , Mutiara Indah Nur Rohman","doi":"10.1016/j.rines.2025.100110","DOIUrl":"10.1016/j.rines.2025.100110","url":null,"abstract":"<div><div>This study investigates the spatial distribution and quality of groundwater in the Rontu Watershed, West Nusa Tenggara, Indonesia. The analysis combines Geographic Information System (GIS)-based modeling with hydrochemical analysis. The Analytical Hierarchy Process (AHP) was employed to generate a Groundwater Potential Zone (GWPZ) map based on seven weighted parameters: geology, geomorphology, soil texture, slope, land use/land cover (LULC), lineament density, and drainage density. Sensitivity analysis revealed that slope and lithology significantly influence groundwater potential, as evident in the weighting scheme. Areas with mild topography (0°–12°) and lowland alluvial zones were found to be favorable for infiltration. The resulting GWPZ map classified the watershed into five categories, with high to very high potential zones concentrated in the northern and central parts and low potential zones found predominantly in the southeast. The high potential zone covers approximately 21 % of the study area, while the very high zone accounts for around 10 %. Groundwater quality was assessed through field measurements and laboratory analyses of physicochemical parameters, including TDS, EC, DO, pH, temperature, and major ions. Results indicate that several lowland and coastal areas exhibit elevated levels of TDS, sodium, and sulfate, which exceed national drinking water standards, potentially due to seawater intrusion and anthropogenic influence. Major ion composition further supports this finding, with dominant ion sequences of Na⁺ > Ca²⁺ > K⁺ and Cl⁻ > SO₄²⁻ > NO₃⁻. Despite this, most groundwater sources remain within sanitation quality limits. This study provides a replicable tool for groundwater development in data-limited, urbanizing regions.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100110"},"PeriodicalIF":0.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144470439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of reservoir-induced crustal motion study of Koyna-Warna & Tehri Dam 库纳-瓦尔纳-特赫里大坝水库诱发地壳运动研究对比

Results in Earth Sciences Pub Date : 2025-06-19 DOI: 10.1016/j.rines.2025.100108

Anshul Panwar , Kamal , Cyril Shaju

{"title":"Comparison of reservoir-induced crustal motion study of Koyna-Warna & Tehri Dam","authors":"Anshul Panwar , Kamal , Cyril Shaju","doi":"10.1016/j.rines.2025.100108","DOIUrl":"10.1016/j.rines.2025.100108","url":null,"abstract":"<div><div>Earthquake triggering is a phenomenon characterized by the advancement or delay of the initial occurrence of an earthquake in nearby or distant locations. This study investigates reservoir-triggered seismicity in two geographically contrasting regions: the Koyna-Warna region, Maharashtra, and the Tehri region, Uttarakhand. The primary objectives of this research are to determine whether the earthquake occurrence process is uniform or distinct for local (areas that are in close proximity to the source of seismic activity. This would include areas directly surrounding the Dam and the reservoir within −50 km range) and remote regions (areas farther away from the source of seismic activity. This would include locations at a considerable distance from the Dam, ranging beyond 50 km) and to examine variations in reservoir-triggered seismicity between the two dams as mentioned earlier. Additionally, we aim to elucidate the precise triggering mechanism, which involves alterations in the stress field at proximate and distant locations. This study also explores the impact of sinusoidal loading of the water cycle within the dam on the triggered seismicity of the specified region. Furthermore, we have conducted a comparative analysis of the b-value, a seismic parameter, for both regions over the past four decades. This paper consists of results necessary for comparing the induced seismicity of the Koyna and Tehri dams by calculating the effect of a sinusoidal load of the water cycle on the frequency of earthquakes occurring in the nearby region. It has shown that reservoir-induced seismicity is predominant in the case of Koyna-Warna—however, the worry for reservoir-triggered seismicity (RTS) is still speculated in the Tehri region.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100108"},"PeriodicalIF":0.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid statistical-algorithmic approach using the frog algorithm to optimize blast patterns for reducing blast vibrations 混合统计-算法方法，使用青蛙算法优化爆破模式，以减少爆破振动

Results in Earth Sciences Pub Date : 2025-06-18 DOI: 10.1016/j.rines.2025.100109

Abbas Khajouei Sirjani , Farhang Sereshki , Mohammad Ataei , Manoj Khandelwal , Hojatollah Mohammadi Anayi , Seyed Mohammad Mehdi Mousavi Nasab , Mohammad Amiri Hosseini

{"title":"Hybrid statistical-algorithmic approach using the frog algorithm to optimize blast patterns for reducing blast vibrations","authors":"Abbas Khajouei Sirjani , Farhang Sereshki , Mohammad Ataei , Manoj Khandelwal , Hojatollah Mohammadi Anayi , Seyed Mohammad Mehdi Mousavi Nasab , Mohammad Amiri Hosseini","doi":"10.1016/j.rines.2025.100109","DOIUrl":"10.1016/j.rines.2025.100109","url":null,"abstract":"<div><div>This study introduces an innovative approach to predict and mitigate blast-induced vibrations by optimizing blast patterns. By combining a statistical model with the frog algorithm, the method achieves enhanced accuracy and efficiency. Addressing a notable gap in blast engineering, this research uniquely integrates statistical models and optimization algorithms for vibration control. Data from 58 blasting events at Golgohar Iron Ore Mine No. 1 were utilized, with 40 datasets used for model training and 18 reserved for independent evaluation. In the prediction phase, four statistical and four AI-based models were developed to estimate peak particle velocity (PPV). Classical evaluation metrics, including R, R², RMSE, MAPE, MAD, and MSE, were applied to identify the best model. The multivariable linear regression model demonstrated superior accuracy, achieving R = 0.94, R² = 0.925, and low error metrics. Following this, the optimization phase employed the multivariable linear regression model as the objective function, integrated with the frog algorithm, to minimize PPV. Several models were developed to assess the influence of algorithmic parameters under the specific conditions of the mine. The results provide a reliable and practical methodology for predicting PPV and optimizing blast patterns, effectively reducing ground vibrations. This straightforward approach offers significant utility for pre-blasting planning and contributes to the advancement of sustainable and efficient blasting practices.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100109"},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144470583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-index detection of rainfall trends and climate shifts in urban tropical kinshasa (1991–2023) 1991-2023年热带金沙萨城市降水趋势和气候变化的多指标探测

Results in Earth Sciences Pub Date : 2025-06-10 DOI: 10.1016/j.rines.2025.100106

Vithundwa Richard Posite , Bayongwa Samuel Ahana , Cherifa Abdelbaki , Mohamed Saber , Emad Habib , LY Aliousseyni , Awoke Guadie

{"title":"Multi-index detection of rainfall trends and climate shifts in urban tropical kinshasa (1991–2023)","authors":"Vithundwa Richard Posite , Bayongwa Samuel Ahana , Cherifa Abdelbaki , Mohamed Saber , Emad Habib , LY Aliousseyni , Awoke Guadie","doi":"10.1016/j.rines.2025.100106","DOIUrl":"10.1016/j.rines.2025.100106","url":null,"abstract":"<div><div>Kinshasa, the capital of the Democratic Republic of Congo, is increasingly vulnerable to climate-induced rainfall extremes that threaten urban resilience. This study analyzes daily precipitation data over a 33-year period (1991–2023) using a suite of rainfall indices, including those developed by the Expert Team on Climate Change Detection and Indices (ETCCDI), alongside the Mann-Kendall trend test, to assess changes in rainfall intensity, frequency, duration, and extremes. Among the examined indices, Extremely Wet Days (EWD) and the Simple Daily Intensity Index (SDII) exhibited statistically significant positive trends. EWD showed a marked increase (Z = 2.657, p = 0.007), peaking at 15 days in 2020, the highest in the record, indicating a growing frequency of intense rainfall events. SDII also showed a significant rise (Z = 2.866, p = 0.004), suggesting intensification in daily rainfall amounts. Although the upward trend in annual total rainfall (PRCPTOT) was not statistically significant, it supports the overall pattern of increasing wetness. These findings underscore a rising risk of flash flooding and highlight the urgent need for adaptive water management strategies, early warning systems, and climate-resilient infrastructure planning in Kinshasa. The study provides vital evidence to inform policy and urban planning across tropical African cities.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100106"},"PeriodicalIF":0.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flood hazard zonation using remote sensing, geographic information system, and analytic hierarchy process in the Bhagirathi River Basin, Uttarakhand, India 基于遥感、地理信息系统和层次分析法的印度北阿坎德邦Bhagirathi河流域洪水灾害区划

Results in Earth Sciences Pub Date : 2025-06-03 DOI: 10.1016/j.rines.2025.100105

Aditya Kumar Varma, Anurag Dhote, Aneesh Mathew, Chinthu Naresh, Padala Raja Shekar

{"title":"Flood hazard zonation using remote sensing, geographic information system, and analytic hierarchy process in the Bhagirathi River Basin, Uttarakhand, India","authors":"Aditya Kumar Varma, Anurag Dhote, Aneesh Mathew, Chinthu Naresh, Padala Raja Shekar","doi":"10.1016/j.rines.2025.100105","DOIUrl":"10.1016/j.rines.2025.100105","url":null,"abstract":"<div><div>Floods are seen as a substantial environmental hazard. A flood hazard map is a crucial tool for evaluating regions vulnerable to flooding. This study seeks to identify flood-prone regions along the Bhagirathi River in the Uttarkashi and Tehri Garhwal districts of Uttarakhand. A hybrid approach utilizing remote sensing (RS) and geographic information system (GIS), in conjunction with the Analytical Hierarchy (AHP) Process, was implemented to delineate flood hazard zones within the study area. Seven parameters were selected for this purpose: drainage density, precipitation, slope, land use/land cover (LULC), distance from the river, soil type, and topographic wetness index (TWI). The thematic maps of the parameters were reclassified after ranks were assigned to different classes. AHP was employed to construct a pairwise comparison matrix for all parameters to ascertain the relative weight of each parameter. A weighted overlay analysis was performed by combining reclassified thematic layers with their respective AHP-derived weights to generate the flood hazard map (FHM) for the study area. The output is divided into five distinct flooding hazard zones: very high, high, moderate, low, and very low. The precision of these classifications was confirmed using the Receiver Operating Characteristic Curve (ROC) and Area Under the Curve (AUC). The findings revealed that the accuracy rate for AHP was 66.8 %. The study's findings can serve as a convenient resource to aid in the management and reduction of rescue operations on the banks of the Bhagirathi.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100105"},"PeriodicalIF":0.0,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

GOD - and DRASTIC - based valuation of groundwater vulnerability to contamination of hinterland aquifers of northern part of Akwa Ibom State, Nigeria 基于GOD和DRASTIC方法对尼日利亚阿夸伊博姆州北部内陆含水层地下水易受污染程度的评价

Results in Earth Sciences Pub Date : 2025-05-30 DOI: 10.1016/j.rines.2025.100104

Emem O. Ikpe , Aniekan M. Ekanem , Nyakno J. George , Jewel E. Thomas , Ndifreke I. Udosen

{"title":"GOD - and DRASTIC - based valuation of groundwater vulnerability to contamination of hinterland aquifers of northern part of Akwa Ibom State, Nigeria","authors":"Emem O. Ikpe , Aniekan M. Ekanem , Nyakno J. George , Jewel E. Thomas , Ndifreke I. Udosen","doi":"10.1016/j.rines.2025.100104","DOIUrl":"10.1016/j.rines.2025.100104","url":null,"abstract":"<div><div>There are growing worries over groundwater contamination globally. The main aim of this study is to evaluate the groundwater vulnerability to contamination in the northern part of Akwa Ibom state, southern Nigeria through the application of the GOD and DRASTIC models in conjunction with the surface electrical resistivity method. The results from the VES data interpretation acquired at 55 communities in the study region were utilized to appraise the groundwater vulnerability to contamination in the region. A maximum of 4 earth layers comprising sequence of sands (fine, coarse and gravelly sands) with minor clay intercalations were revealed by the sounding results. The aquifer layer exists at a depth ranging from 1.0 to 47.8 m and has a thickness of 18.6–102.7 m. The GOD model results show five groundwater vulnerability to contamination gradings (GWCG): very low (18 %), low (25 %), average (16 %), high (29 %) and very high (11 %). The DRASTIC model results identity three GWCGs: low (33 %), moderate (62 %) and high (5 %). The sensitivity analysis of the DRASTIC model reveals that the depth to the groundwater and hydraulic conductivity parameters have the greatest and least influence respectively on the GWCGs. The GWCG maps produced based on the GOD and DRASTIC models seems to show some degree of correlation and the respective grading areas are well demarcated. It is adjudged from these maps that the groundwater vulnerability to contamination grading is low, moderate and high respectively and these grading areas are well delineated on the maps. These outcomes provide a useful baseline data on groundwater contamination in the area which is essential for efficient and sustainable groundwater utilization in the region and other places with comparable geology.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100104"},"PeriodicalIF":0.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Forward stratigraphic modeling in rift sedimentary basins 裂谷沉积盆地的正演地层模拟

Results in Earth Sciences Pub Date : 2025-05-28 DOI: 10.1016/j.rines.2025.100102

Donatien Ishimwe , Olugbenga Ajayi Ehinola , Liang Xue

{"title":"Forward stratigraphic modeling in rift sedimentary basins","authors":"Donatien Ishimwe , Olugbenga Ajayi Ehinola , Liang Xue","doi":"10.1016/j.rines.2025.100102","DOIUrl":"10.1016/j.rines.2025.100102","url":null,"abstract":"<div><div>This review explores the application of Forward Stratigraphic Modeling (FSM) in rift sedimentary basins, with a special focus on the capabilities of DionisosFlow™. Rift basins, shaped by complex tectono-sedimentary processes, present modeling challenges due to their evolving accommodation space, abrupt facies transitions, and variable sediment supply. DionisosFlow™, a diffusion-based FSM software, enables 3D simulation of sedimentary architecture by integrating tectonic and thermal subsidence, sediment transport, and sea-level change. Through a comparative evaluation of case studies, including the Midyan and East African Rift basins, this review highlights how DionisosFlow™ performs in both data-rich and data-scarce frontier basins. The tool's process-based modeling framework is compared with other FSM platforms like GPM and Badlands, emphasizing their respective strengths, limitations, and application scopes. Additionally, the review addresses methodological workflows, model calibration, and the integration of geological constraints, including plume-related magmatic influences. It concludes by outlining future directions for improving FSM realism in rift settings through enhanced data integration, multi-scale modeling, and scenario testing</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100102"},"PeriodicalIF":0.0,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Landslide susceptibility mapping using geospatial, analytical hierarchy process (AHP), and binary logistic regression (BLR) techniques – A study of Wadi Habban Basin, Shabwah, Yemen 利用地理空间、层次分析法（AHP）和二元逻辑回归（BLR）技术绘制滑坡易感性图——对也门沙布瓦瓦的瓦迪哈班盆地的研究

Results in Earth Sciences Pub Date : 2025-05-21 DOI: 10.1016/j.rines.2025.100103

Haial Al-kordi , Abdulmohsen Al-Amri , Govinda raju

{"title":"Landslide susceptibility mapping using geospatial, analytical hierarchy process (AHP), and binary logistic regression (BLR) techniques – A study of Wadi Habban Basin, Shabwah, Yemen","authors":"Haial Al-kordi , Abdulmohsen Al-Amri , Govinda raju","doi":"10.1016/j.rines.2025.100103","DOIUrl":"10.1016/j.rines.2025.100103","url":null,"abstract":"<div><div>Wadi Habban Basin is continuously prone to numerous geological hazards, such as landslides. This study aims to generate landslide susceptibility maps by integrating of remote sensing, Geographic-Information-System (GIS) techniques, Analytical-Hierarchy-Process (AHP), and Binary -Logistic-Regression (BLR) models. In this study, multiple datasets were utilized for delineating landslide susceptibility maps, including slope, elevation, lithology, aspect, proximity to faults, proximity to drainage, proximity to roads, proximity to lineaments, geomorphology, soil texture, rainfall, land use/land cover, Normalized Difference Vegetation Index, curvature, and stream power index. Spatially distributed maps and thematic layers for all the aforementioned parameters were generated using a combination of remote sensing data and ground-based observations within a GIS environment. A comparative analysis of the AHP and BLR models was conducted to evaluate their predictive capability. The BLR model classified 49 % of the area as high to very high susceptibility, compared to 26 % by AHP, and showed a stronger delineation of low-risk zones. ROC curve analysis indicated high predictive accuracy for BLR than AHP models, with AUC values of 90.4 % for BLR and 81.7 % for AHP. Validation using confusion matrices demonstrated that the (BLR) model achieved an overall accuracy of 91.5 %, with a precision of 93 % and a recall of 91 %. In comparison, the (AHP) model yielded an overall accuracy of 75 %, a precision of 87.5 %, and a recall of 75 %.Results confirm the robustness of the BLR model for effective landslide susceptibility mapping and highlight its potential for risk informed planning. This study provides valuable insights for disaster risk reduction, sustainable land-use management, and the application of targeted mitigation strategies in landslide-prone regions.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100103"},"PeriodicalIF":0.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transitioning from equilibrium of glacier mass balance in the Upper Bhagirathi Valley, Central Himalaya 喜马拉雅中部上巴吉拉蒂河谷冰川物质平衡的过渡

Results in Earth Sciences Pub Date : 2025-05-20 DOI: 10.1016/j.rines.2025.100100

Sarmistha Halder , Pritam Chand , C. Scott Watson , Ishtiaq Ahmed , Rakesh Bhambri

{"title":"Transitioning from equilibrium of glacier mass balance in the Upper Bhagirathi Valley, Central Himalaya","authors":"Sarmistha Halder , Pritam Chand , C. Scott Watson , Ishtiaq Ahmed , Rakesh Bhambri","doi":"10.1016/j.rines.2025.100100","DOIUrl":"10.1016/j.rines.2025.100100","url":null,"abstract":"<div><div>This study analyses key glaciers in the Upper Bhagirathi Valley, Central Himalaya, India, between 1973 and 2024 based on multi-date digital elevation models (DEMs) to examine the shift from balanced to imbalanced glacier mass budget. From 1973 to 2000, ice loss was evident mainly at the terminus (-0.10 ± 0.04 m w.e. a⁻¹), with a data gap (∼16 km²) in the higher ablation and accumulation zone of Gangotri Glacier, where elevation changes through the main glacier flow path indicated a mass stability or a minor positive mass balance. A marginal increase in mass (+0.11 ± 0.04 m w.e. a<sup>−1</sup>) was observed from 2000 to 2015, followed by substantial losses during 2015–2020 (-0.27 ± 0.09 m w.e. a<sup>−1</sup>) and 2020–2024 (-0.62 ± 0.39 m w.e. a<sup>−1</sup>). Notably, thinning and ice loss expanded from the low-altitude to high-altitude zones (∼>5200 m asl). Gangotri Glacier's mass loss intensified over time, increasing from −0.17 ± 0.01 m w.e. a⁻¹ (1973–2000) to −1.03 ± 0.58 m w.e. a⁻¹ (2020–2024). Similar trends were observed in former tributary glaciers like Raktavaran and Chaturangi. The contact zone between debris-mantled and bare ice exhibited the highest thinning rates, highlighting the influence of surface debris on melting rates. This study reveals surge activity for the first time in the Chaturangi Glacier's tributary (1973–2006), highlighting localized dynamics. The recent shift to an imbalanced state underscores climate change’s impact on ice melt, threatening water supply and ecosystems, and highlighting the need for regular monitoring and adaptive strategies in the warming Himalaya.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100100"},"PeriodicalIF":0.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced seismic hazard assessment and risk zoning in the Kashan Region, Central Iran: Insights from historical data and advanced modeling techniques 伊朗中部卡尚地区加强地震灾害评估和风险区划：来自历史数据和先进建模技术的见解

Results in Earth Sciences Pub Date : 2025-05-16 DOI: 10.1016/j.rines.2025.100098

Ahmad Adib , Pooria Kianoush

{"title":"Enhanced seismic hazard assessment and risk zoning in the Kashan Region, Central Iran: Insights from historical data and advanced modeling techniques","authors":"Ahmad Adib , Pooria Kianoush","doi":"10.1016/j.rines.2025.100098","DOIUrl":"10.1016/j.rines.2025.100098","url":null,"abstract":"<div><div>This research focuses on earthquake risk zoning in the Kashan region of central Iran—an area with significant seismic activity due to its location along major fault lines. Central Iran is bordered to the east by the Lut Block, to the north by the Alborz mountain range, and to the south by the Sanandaj-Sirjan region, forming the Iranian plateau. The study area, located in Isfahan province approximately 100 kilometers from Kashan, lies within the structural zones of the elevated Zagros, Sanandaj-Sirjan, and the volcanic arc of Urmia-Dokhtar. The study aims to enhance understanding of seismic hazards and improve risk assessment methodologies. Key findings include the identification of historical earthquakes, which underscore the region's vulnerability. Advanced probabilistic seismic hazard assessment techniques were employed using the OpenQuake platform to model seismic risks effectively. This research is novel in its integration of historical data with modern probabilistic modeling, providing a comprehensive framework for assessing seismic hazards in an underexplored region. Results indicate that while some areas exhibit low seismic activity, the potential for future earthquakes remains significant, highlighting the need for updated hazard assessments. A critical finding is the extended intervals associated with major earthquakes, which may lead to an underestimation of seismic risk. Additionally, the analysis of fault systems reveals complex interactions that influence the seismic behavior of Kashan, providing insights for urban planning and disaster preparedness. Ultimately, this research aims to inform local authorities and stakeholders about seismic risks, enabling effective mitigation strategies and enhancing community resilience against potential disasters.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100098"},"PeriodicalIF":0.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0