Results in Earth Sciences最新文献

{"title":"3D modeling of source and reservoir rock characteristics in key oil and gas fields, Gippsland Basin, Southern Australia","authors":"Kamalia Norjannah Kamalrulzaman ,&nbsp;Mohamed Ragab Shalaby ,&nbsp;Md Aminul Islam","doi":"10.1016/j.rines.2025.100112","DOIUrl":"10.1016/j.rines.2025.100112","url":null,"abstract":"<div><div>Despite extensive hydrocarbon production from the Gippsland Basin, limited integrated 3D modeling studies have comparatively assessed the structural, geochemical, and petrophysical variations between the Kingfish and Volador formations across oil- and gas-producing fields. This gap hampers accurate reservoir characterization and development strategies. To address this, a comparative 3D modeling analysis was conducted on the Kingfish and Volador formations in the Kingfish Oil and Kipper Gas fields, Gippsland Basin, Australia. Structural analysis revealed NW-SE trending steep faults (70–72°) in the Kingfish Field and shallower WNW-ESE faults (62.5–65°) in the Kipper Field. Facies models indicated similar stratigraphic successions, with upper high-energy sandstones transitioning to organic-rich shales at the base. Geochemical analysis showed the Kingfish Formation has TOC of 1.0–12.0 wt%, HI of 120–140 mg HC/g TOC, and higher maturity (Tmax 422–430 °C; % VR 0.50–0.52 %), consistent with deeper burial. In contrast, the Volador Formation has TOC of 2.0–6.0 wt%, higher HI (150–210 mg HC/g TOC), but lower maturity (Tmax 422.5–428 °C; % VR 0.48–0.49 %). Petrophysical results showed superior reservoir quality in the Volador Formation, with porosity of 10–25 %, permeability up to 10 mD, low clay volume (0–25 %), and water saturation of 50–100 %. The Kingfish Formation displayed more variable porosity (2.5–22.5 %), lower permeability (&lt;10 mD), higher clay content (2.5–55 %), and water saturation of 40–95 %. Limited data from deeper Kingfish sections highlight the need for further exploration</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100112"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589052","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}

{"title":"Optimisation of stope support system using kinematic analysis and numerical modelling – A sustainable mining approach","authors":"Wayne Mudamburi ,&nbsp;Tawanda Zvarivadza ,&nbsp;Takunda Bvumai Muwirimi ,&nbsp;Moshood Onifade ,&nbsp;Manoj Khandelwal","doi":"10.1016/j.rines.2025.100083","DOIUrl":"10.1016/j.rines.2025.100083","url":null,"abstract":"<div><div>Optimising stope support design is crucial in mining engineering to ensure underground safety and stability. Traditionally, rock mass classification methods have guided support strategies, but they come with inherent limitations. This study takes a novel approach by adopting support resistance design criteria, providing a more effective alternative. Using advanced numerical modelling techniques, the research evaluates stope support systems by considering key factors such as geomechanical properties, stope geometry, and support configurations. The study specifically examines three primary failure modes wedge failure, block failure, and spalling through simulations that replicate real-world mining conditions. By integrating empirical data with sophisticated analytical tools, the research accurately determines support resistance requirements, ensuring structural reliability and minimising failure risks. The optimised design, tailored to local geological conditions, significantly enhances worker safety and operational resilience by reducing the likelihood of support failures. A comprehensive economic analysis indicates that while the initial implementation costs are slightly higher, the long-term advantages such as reduced downtime, fewer ground falls, and improved safety protocols far outweigh the investment. This approach strikes a balance between economic feasibility and operational sustainability by prioritising durable and effective support systems. By moving away from traditional methodologies, this study highlights the need for innovative strategies in stope support design, ultimately contributing to safer, more efficient, and sustainable mining practices. The findings also promote resource optimisation, reducing unnecessary support material usage and mitigating the need for ground fall reclamation.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100083"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating field data, petrography, and induced polarization geophysical survey for 3D modeling and delineation of gold mineralization targets in Bissiang area, Nyong group, Cameroon","authors":"Kouankap Nono Gus Djibril ,&nbsp;Mohamed Moustapha Ndam Njikam ,&nbsp;Alessandra Ribodetti ,&nbsp;Njikeu Olivier ,&nbsp;Ntoogue Paul ,&nbsp;Robillard Claude","doi":"10.1016/j.rines.2025.100139","DOIUrl":"10.1016/j.rines.2025.100139","url":null,"abstract":"<div><div>Stream sediments sampling, lithological observations and induced polarization (IP) survey were carried out in Bissiang area, located at the northwestern border of the Congo Craton in Cameroon. The aim of the study was to delineate potential gold targets through the integration of field, petrographic, and geophysical data. Most stream sediment samples yielded alluvial gold particles, suggesting a mineralized catchment composed of quartzite, schist, and gneiss. Inverted chargeability sections helped identify Very High Chargeability (VHC) and High Chargeability (HC) domains, interpreted as potential primary and secondary gold targets, respectively. Their spatial correlation revealed a N-S-trending anomaly affected by a dextral fault, and a 3D model of the VHC (25–44 mV/V) and HC (15–25 mV/V) domains was developed. The volume of the primary VHC targets was estimated at 340,388,500 m³ and that of the secondary or HC targets at 705,358,000 m³. These results provide a basis for further exploration and drilling campaigns.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100139"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145465237","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}

{"title":"Spatial characterisation of groundwater systems using fuzzy c-mean clustering: A multi-parameter approach in crystalline aquifers","authors":"B.E. Akeredolu ,&nbsp;K.A.N. Adiat ,&nbsp;G.M. Olayanju ,&nbsp;A.A. Akinlalu ,&nbsp;D.O. Afolabi","doi":"10.1016/j.rines.2024.100051","DOIUrl":"10.1016/j.rines.2024.100051","url":null,"abstract":"<div><div>Similarity based approaches to groundwater system characterization has proven to be of great value in describing groundwater system in terms of assessment and prediction of groundwater resource where data are scarce in heterogeneous basement complex environment. With this aim, a fuzzy c-means clustering approach was utilized to co-locate hydrogeophysical parameters according to their similarities into groups, that are internally homogeneous which informs a specific hydrogeological zone. The study was carried out in some part of Osun River catchment, Ilesa southwestern Nigeria, a data-scarce area, which currently suffer water scarcity due to many wells no longer being productive. The study utilizes data from remote sensing, borehole data and geophysical data, such as Landsat image, Digital Elevation Model (DEM), borehole yield, aeromagnetic, and electrical resistivity datasets. Factors influencing spatial-temporal variations of groundwater occurrence of an aquifer in crystalline rocks such as slope, lineament density, drainage density, structural density, aquifer thickness, aquifer resistivity, overburden thickness, transverse resistivity, longitudinal resistivity, anisotropy coefficient were assessed and subjected to fuzzy c-mean algorithm. The fuzzy c-means clustering analysis identified three distinct clusters, each representing zones with similar hydrogeological properties, and some overlap exists due to mixed characteristics at some locations. The cluster validity index results suggest a good well-separated, distinguishable cluster. The findings established that the study area is characterized with three hydrogeological zones, with no definite boundaries between the zones, different from the catchment. Moreover, the study presents an approach to define and describe the target system using the groundwater yield similarity to hydrogeophysical properties.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100051"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel PFG-NMR method to determine CO2 solubility in geological carbon storage","authors":"Heng Wang ,&nbsp;Shouchuan Wang ,&nbsp;Yunfei Li ,&nbsp;Zuhao Kou ,&nbsp;Linghong Fan ,&nbsp;Zemin Ji ,&nbsp;Vladimir Alvarado ,&nbsp;Lei Wang","doi":"10.1016/j.rines.2025.100071","DOIUrl":"10.1016/j.rines.2025.100071","url":null,"abstract":"<div><div>Solubility is a dominant trapping mechanism for geological carbon storage (GCS). CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> dissolution into aquifer water, mainly affected by formation pressure, temperature and salinity, which in turn regulate water molecules self-diffusion coefficient(D<span><math><msub><mrow></mrow><mrow><mn>0</mn></mrow></msub></math></span>). Here we measured CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> solubility in DI water, in 50 kppm and 100 kppm NaCl solutions at different pressures and temperatures. Then, a self-diffusion coefficient experiment, using the pulsed-field gradient nuclear magnetic resonance (PFG-NMR) technique, was conducted to investigate how the different conditions affect CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> dissolution. Results show that the diffusion coefficient in aqueous phase containing dissolved CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> increases with temperature, and decreases inversely with pressure, due to increased CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> dissolution. Additionally, clear, well-defined correlations between D<span><math><msub><mrow></mrow><mrow><mn>0</mn></mrow></msub></math></span> and the CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> dissolved fraction were found in all experiments. These correlations gave rise to a novel method to assess CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> solubility by measuring D<span><math><msub><mrow></mrow><mrow><mn>0</mn></mrow></msub></math></span> via PFG-NMR. This method is fast and provides an assessment of solubility trapping during GCS site screening or storage processes.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100071"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine learning-based hydrograph modeling with LSTM: A case study in the Jatigede Reservoir Catchment, Indonesia","authors":"Neil Andika ,&nbsp;Piter Wongso ,&nbsp;Faizal Immaddudin Wira Rohmat ,&nbsp;Siska Wulandari ,&nbsp;Ammar Fadhil ,&nbsp;Riswanto Rosi ,&nbsp;Nabila Siti Burnama","doi":"10.1016/j.rines.2025.100090","DOIUrl":"10.1016/j.rines.2025.100090","url":null,"abstract":"<div><div>Predicting and comprehending river discharge is essential to Earth system science in order to manage water resources and preserve ecological sustainability. In data-scarce tropical regions, traditional hydrological models often face challenges due to limited observations and high variability in rainfall-runoff responses. This study explores the application of Long Short-Term Memory (LSTM) networks for hydrograph modeling in the Jatigede Reservoir Catchment, Indonesia, where satellite data is becoming more and more accessible, but gauging infrastructure is scarce. Utilizing 12 years of historical data, an LSTM model was developed to capture the complex non-linear dynamics between rainfall and runoff. The model successfully reproduced overall hydrograph patterns, obtaining a Nash-Sutcliffe Efficiency (NSE) of 0.60 and a Root Mean Squared Error (RMSE) of 12.16, while limitations were observed in simulating extreme hydrological events, primarily due to a lack of historical extreme event data. Sensitivity analysis revealed a significant decline in model performance when applied to a partial dataset, highlighting the importance of data representativeness in model calibration. While the LSTM model shows potential for surrogate hydrograph modeling in data-scarce regions, its ability to predict extreme events remains constrained. Future research should focus on incorporating additional extreme event data and enhancing model generalizability across diverse hydrological conditions.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100090"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882127","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}

{"title":"On the steadfastness of the least-squares reverse-time migration wavefield extrapolation via 1st-order Riemannian axis finite-difference solver","authors":"Hussein Muhammed ,&nbsp;AbdelHafiz Gadelmula ,&nbsp;Zhenchun Li","doi":"10.1016/j.rines.2025.100121","DOIUrl":"10.1016/j.rines.2025.100121","url":null,"abstract":"<div><div>Exploring Earth's deep regions via Least-Squares Reverse-Time Migration (LSRTM) methods is of significant interest due to its exceptional structural-amplitude clarity. This cutting-edge seismic imaging technique is time-consuming and memory-intensive, thus wavefield extrapolation was proposed to be in the Pseudodepth domain (1^st-order Riemannian coordinate system’s axis) to address these issues and to prevent oversampling/aliasing when modeling deeper subsurface zones. Stabilizing the generated Riemannian wavefield involves implementing an appropriate mapping velocity and obtaining the vertical axis operator which partially converts the finite difference solver from time to frequency domains. Each Cartesian point <span><math><mrow><mo>(</mo><mi>x</mi><mo>,</mo><mi>y</mi><mo>,</mo><mi>z</mi><mo>)</mo></mrow></math></span> has a corresponding vertical-time point <span><math><mrow><mo>(</mo><msub><mrow><mi>ξ</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>,</mo><msub><mrow><mi>ξ</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>,</mo><msub><mrow><mi>ξ</mi></mrow><mrow><mn>3</mn></mrow></msub><mo>)</mo></mrow></math></span>, allowing interpolation of the reconstructed source wavefield through a Cartesian-to-Riemannian mapping function. Our stability and convergence analysis indicates that the spatial derivatives of the 1^st-order Riemannian axis can be approximated by Fourier pseudo-spectral methods and fast-Fourier transforms using a special Gaussian-like impulse function. This function generates the source term vector-matrix within the finite-difference operator. The mapping velocity, derived as a differential form of the initial input velocity model, controls the CFL conditions of the associated Riemannian-finite difference operator. Numerical, synthetic, and seismic field data examples show that this approach is more stable and efficient in extrapolating a smooth 1^st-order Riemannian axis-based finite-difference wavefield while adhering to Claerbout’s principle for locating subsurface reflectors. Additionally, choosing the appropriate sampling rate for the new vertical axis is inversely related to the maximum frequency of the impulse wavelet and directly related to the minimum velocity value in the model.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100121"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895355","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}

{"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 ,&nbsp;Aniekan M. Ekanem ,&nbsp;Nyakno J. George ,&nbsp;Jewel E. Thomas ,&nbsp;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":"2025-12-01","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}

{"title":"Integrated structural characterization from airborne geophysical data and field observations: A case study from the left bank of the Sankarani River (Southern Mali)","authors":"Aboubacar Denon ,&nbsp;Gbele Ouattara ,&nbsp;Ousmane Wane ,&nbsp;Baco Traoré ,&nbsp;Adama Youssouf Koné ,&nbsp;Souleymane Sangaré","doi":"10.1016/j.rines.2025.100140","DOIUrl":"10.1016/j.rines.2025.100140","url":null,"abstract":"<div><div>Magnetic and electromagnetic surveys carried out over the left bank of the Sankarani River, in southern Mali, outline a structural pattern that matches field observations in key areas. Residual field data with values ranging from −173.94 nT to 286.85 nT were used to produce various maps. These data (magnetic and electromagnetic) show a set of magnetic and conductive lineaments-oriented NW–SE, N–S, NE–SW, and E–W. Several coincide with mapped structures and correspond to major discontinuities, including shear zones that can be followed to depths of several hundred metres. Field-based structural analysis confirms that these lineaments correspond to a complex deformation history involving four successive phases, labelled D1 through D4. D1 reflects a continuum of deformation subdivided into two stages: D1a, associated with WNW–ESE coaxial shortening and responsible for fold stacking and thrusting; and D1b, characterized by NW–SE ductile shearing that generated predominantly sinistral N–S strike-slip faults, dextral NE–SW conjugate faults, and an NNE- to NE-trending foliation. D2 records NE–SW shortening and is associated with disharmonic folds (P2) and a second schistosity (S2). D3 corresponds to brittle deformation of late Eburnean age, while D4 is marked by the intrusion of Mesozoic dolerite dykes reflecting late-stage structural reactivation. The overlay of interpreted lineaments with artisanal gold mining sites reveals a strong spatial correspondence, particularly along shear zones. This association supports a structural control on mineralization and highlights the metallogenic significance of these features for identifying prospective areas.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100140"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527957","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}

{"title":"Comparison of reservoir-induced crustal motion study of Koyna-Warna & Tehri Dam","authors":"Anshul Panwar ,&nbsp;Kamal ,&nbsp;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":"2025-12-01","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}