Results in Earth Sciences最新文献_第8页

Analysis of seismic refraction and uphole survey data over eastern niger delta basin for engineering structures 尼日尔三角洲盆地东部工程构造地震折射及井眼测量资料分析

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-09-30 DOI: 10.1016/j.rines.2025.100132

Tochukwu Michael Odoh , Uche Olodu , Amobi Chigozie Ekwe , George-Best Azuoko , Elijah Edet Nkitnam , Gloria Otosigbo

{"title":"Analysis of seismic refraction and uphole survey data over eastern niger delta basin for engineering structures","authors":"Tochukwu Michael Odoh , Uche Olodu , Amobi Chigozie Ekwe , George-Best Azuoko , Elijah Edet Nkitnam , Gloria Otosigbo","doi":"10.1016/j.rines.2025.100132","DOIUrl":"10.1016/j.rines.2025.100132","url":null,"abstract":"<div><div>Seismic refraction survey was conducted in the eastern Niger Delta basin to determine the thickness and velocities of weathered layers for civil engineering constructions. 25 forward-reverse refraction data, along a 300 m profile with geophone spacing of 12.5 m, were acquired using the OYO McSeis seismograph. 12 uphole data from 60 m deep boreholes with 32 hydrophones positioned at 1.8 m intervals were acquired using a RAS-24 seismograph. The seismic energy was a dynamite-charged source. The first break arrival of the signals was picked using the IXseg2segy tool, and time-distance relations were established. The model with the layer sequence was done with Upsphere software to obtain the velocity of the different layers. The lithology log of the drilled boreholes revealed clay and sand units with variable sand texture. Analyses of the forward-reverse refraction, uphole and lithology data showed that the study area consists of weathered to variably weathered and consolidated layers derived from the contrasting acoustic impedance of the beds. The weathered layer has an average thickness of 3.13 m and a velocity of 339.25 m/s. A partially weathered layer of about 11.23 m thick with a mean velocity of 692.58 m/s. The consolidated layer has an average velocity of 1740.65 m/s and within the range of the obtained true velocity of the layer, competent to support engineering structures. It is recommended that a depth of piling/foundation of about 19 m and beyond would be most suitable for industrial structures coming into the area.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100132"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264949","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

Petrography and sedimentary sequence relationships of speleothems from the Cradle of Humankind, South Africa 南非人类摇篮的岩石学和沉积层序关系

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-09-13 DOI: 10.1016/j.rines.2025.100131

Georgina Luti , Tara Edwards , Rieneke Weij , Robyn Pickering

{"title":"Petrography and sedimentary sequence relationships of speleothems from the Cradle of Humankind, South Africa","authors":"Georgina Luti , Tara Edwards , Rieneke Weij , Robyn Pickering","doi":"10.1016/j.rines.2025.100131","DOIUrl":"10.1016/j.rines.2025.100131","url":null,"abstract":"<div><div>Speleothems are ubiquitous sedimentary features of caves in the Cradle of Humankind (locally referred to as the Cradle). Dominantly composed of calcite/remnant aragonite, these deposits are often interbedded with clastic sediments, which host a rich collection of hominin and faunal materials. Research into flowstones (horizontally-bedded speleothems) laid the foundation for establishing a U-Pb based chronology for the formation history of the caves and the important fossils they preserve but little work has been done on the flowstones themselves. The relationship between dated flowstones and sediments is key to building the regional U-Pb chronology. Here we test whether speleothems from the Cradle represent a homogenous lithology and assess the presence/absence of diagenesis through petrography. To do this, we analyse flowstones (n = 63) and stalagmites (n = 4) from twelve major fossil-bearing caves, making this the largest and most comprehensive study on speleothems from this region. Five speleothem categories are identified based on macrofabrics: macro-layered, micro-layered, detritally-interbedded, rare (raft and microbially-influenced) and diagenetic. Based on these, we identify previously unrecognised heterogeneity in Cradle speleothems and discuss the impact of diagenesis on speleothem palaeoclimatic and chronological studies. Finally field observations, hand samples and petrographic analysis document alternating deposition between speleothem and clastic deposits, forming long conformable sequences, driven by external hydroclimatic changes. In our dataset, we do not find evidence of flowstone intrusion into existing clastic sedimentary sequences and argue that, unless exceptional circumstances can be documented in detail, flowstones represent breaks in clastic deposition and can provide robust bracketing ages for sediments and fossils.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100131"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104722","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

Polyphase deformation and control of structural position on lineament distribution in a pop-up fault-propagation fold: Inferences from structural and lineament analysis of the Kambhu anticline, Southern Kirthar Fold Belt, Pakistan 突发性断展褶皱多相变形及构造位置对线性分布的控制——来自巴基斯坦南基尔塔尔褶皱带Kambhu背斜构造和线性分析的推论

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-07-16 DOI: 10.1016/j.rines.2025.100116

Aijaz Ali Halepoto , Muhammad Hassan Agheem , Shabeer Ahmed , Surriya Bibi Ahmedani , Rafique Ahmed Lashari

{"title":"Polyphase deformation and control of structural position on lineament distribution in a pop-up fault-propagation fold: Inferences from structural and lineament analysis of the Kambhu anticline, Southern Kirthar Fold Belt, Pakistan","authors":"Aijaz Ali Halepoto , Muhammad Hassan Agheem , Shabeer Ahmed , Surriya Bibi Ahmedani , Rafique Ahmed Lashari","doi":"10.1016/j.rines.2025.100116","DOIUrl":"10.1016/j.rines.2025.100116","url":null,"abstract":"<div><div>The Southern Kirthar Fold Belt represents the southernmost extent of the active left-lateral transpressional regime between the Indian and Eurasian Plates. This study investigates the structural geometry, deformation history, lineament distribution and the control of structural position on lineament distribution within the Kambhu anticline, a 37 km long and 7 km wide structure located in the frontal part of the Southern Kirthar Fold belt. The analysis is based on geological map (1:253,440), topographic maps (1:50,000) and Digital Elevation Model acquired by Shuttle Radar Topographic Mission with spatial resolution of 30 m. The Kambhu anticline is a north-south trending, asymmetrical, doubly-plunging, upright, gentle and east-vergent pop-up fault-propagation fold that has undergone two post-folding deformation phases. It was cut across by two antagonistic tear faults, dividing it into northern, central and southern segments. Subsequently, the southern segment was re-deformed by a regional left-lateral strike-slip fault step-over. Lineament analysis reveals that longitudinal lineaments are primarily concentrated along synclinal hinges, while, transverse and oblique lineaments are mainly distributed across the back-limb and hinge zone. Contrary to conventional models, this study identifies a dense population of lineaments in the back-limb, likely associated with the pop-up folding mechanism and post-folding anticlockwise drag induced by strike-slip faulting. The study highlights the significance of polyphase deformation in structural segmentation and controlling lineament density and orientation in pop-up fault-propagation folds.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100116"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656534","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

Aquifer integrity test using the Dar Zarouk parameters in Emure Ekiti Southwestern Nigeria 在尼日利亚西南部Emure Ekiti使用Dar Zarouk参数进行含水层完整性测试

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-04-11 DOI: 10.1016/j.rines.2025.100087

M.A. Bello , M.I. Oladapo , M.R. Abraham-A , O.M. Orji

{"title":"Aquifer integrity test using the Dar Zarouk parameters in Emure Ekiti Southwestern Nigeria","authors":"M.A. Bello , M.I. Oladapo , M.R. Abraham-A , O.M. Orji","doi":"10.1016/j.rines.2025.100087","DOIUrl":"10.1016/j.rines.2025.100087","url":null,"abstract":"<div><div>The call for borehole drilling to exploit underground water in Emure Ekiti due to the failure/unavailability of pipe bone water engenders the application of the Dar Zarouk parameter for potential aquifer delineation, which is uncommon for the region. H and HA curve types are the most dominant sounding curves, revealing (3) to six (6) subsurface layers whose topsoil resistivity and thickness range from 42 Ω-m to 4965 Ω-m and 0.4 m and 2.1 m, respectively. The laterite layer resistivity and thickness range from 42 Ω-m to infinity (∞) and 2.9 m to 63.4 m, respectively. The fracture basement layer resistivity and thicknesses range between 112 Ω-m and ∞ , 8.1 m and 95.1 m, respectively. The weathered layer gave a resistivity value between 145 and 16100 Ω-m and a layer thickness of 61.5 m and ∞ . The fresh bedrock resistivity and depths range from 1537 Ω-m and 0.4 m to 132.4 m, respectively. The basement relief map reveals fairly deep basement depressions on the northeastern flank and basement ridges on the southwestern flank. Geoelectric parameters and maps classify the study area into poor/low, medium, and high groundwater potential zones. 80 % of Emure Ekiti is underlain by marginally thick overburden, thus constituting shallow aquifer units with poor to marginal groundwater potential. The weathered fractured basements constitute the aquifer unit. Partially weathered/fractured basements in isolated regions tend to have low to marginal groundwater yield around the northeastern flank. The results reasonably provide essential information that is expected to assist the town’s future development of groundwater resources.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100087"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839276","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

Understanding the constraints to the correct application of tilt derivative operation to a vertical prism in gravity data processing 在重力数据处理中，倾斜导数操作对垂直棱镜正确应用的限制

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-06-19 DOI: 10.1016/j.rines.2025.100107

Oluwatimilehin B. Balogun , Obafemi E. Bilesanmi , Mohamed Metwaly , Oluwatosin F. Akerele , Odunayo T. Ojo , Oluwaseyi A. Dasho

{"title":"Understanding the constraints to the correct application of tilt derivative operation to a vertical prism in gravity data processing","authors":"Oluwatimilehin B. Balogun , Obafemi E. Bilesanmi , Mohamed Metwaly , Oluwatosin F. Akerele , Odunayo T. Ojo , Oluwaseyi A. Dasho","doi":"10.1016/j.rines.2025.100107","DOIUrl":"10.1016/j.rines.2025.100107","url":null,"abstract":"<div><div>Analytical simulation of a buried 3D vertical square prism with known density contrast, depth to the top of the buried body, thickness and cross-section area has been done, and tilt angle derivative enhancement operation has been applied to the data in order to establish the constraints that could impede the correct application of tilt derivative operation on gravity data. From the tilt derivative map generated for the data, the distances between contours “-45° to + 45°” and “-30° to + 30°” were used to estimate the depth to the bottom and top of the prism respectively. Where the depth estimates differ significantly from the depth values used for the simulation, the grid size was varied until estimated depth values that were in good agreement with the simulated depths were gotten. By revealing that estimated depth values from the tilt derivative operation will not be accurate when the simulated depth to the top or bottom of the buried body is too small or large compared with the grid size, the results enshrined the importance of optimum grid size on the accuracy of the result. The optimum grid size for the research was found to be between 6.6 and 10 times the depth of burial. Based on the analytical simulation, the research concluded that depth estimate results obtained from the tilt derivative analysis of gravity data is only accurate when the grid size of data sample is between 6.6 and 10 times the depth of burial of the target. The best result was obtained when the grid size of data sample is about 7.5 times the depth of burial.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100107"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501593","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

Climatic, tectonic, and fluvial controls on the origin and retreat of the Aharbal Waterfall, Himalaya 气候、构造和河流对喜马拉雅阿哈尔巴尔瀑布起源和消退的控制

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-11-19 DOI: 10.1016/j.rines.2025.100143

Omar Jaan Paul , Reyaz Ahmad Dar , Shakil Ahmad Romshoo

{"title":"Climatic, tectonic, and fluvial controls on the origin and retreat of the Aharbal Waterfall, Himalaya","authors":"Omar Jaan Paul , Reyaz Ahmad Dar , Shakil Ahmad Romshoo","doi":"10.1016/j.rines.2025.100143","DOIUrl":"10.1016/j.rines.2025.100143","url":null,"abstract":"<div><div>River incision is a fundamental geomorphic process in tectonically active mountain regions, influenced by structural, hydrological, lithological, and morphological factors. This process often results in formation of knickpoints along river courses. The Aharbal Waterfall (AWF) is a structural knickpoint, formed along the Vishav River in Pir Panjal Range of northwestern Himalaya. It originated through continuous erosion of glacial till down to underlying basement rocks, composed of highly jointed basalts and agglomerates. Field investigations supplemented by high-resolution drone surveys indicate that AWF has retreated by approximately 538 m upstream from its original location subsequent to the exposure of basement rocks triggered by intensified fluvial activity in the region. The continued retreat is driven by active tectonics, river incision, and lithological controls. High SL and Ksn values concentrated along the Aharbal reach further support enhanced channel incision and indicate active tectonic forcing associated with the AWF. Numerous step-falls downstream likely mark former positions of the retreating AWF. To quantify retreat rate, we utilized Schmidt hammer (N-type) repeated impact tests and an empirical model evaluating the balance between erosive and resistant forces. Our analysis estimates retreat rate of 0.94 cm/year, which is relatively high given basaltic lithology of the site. The persistent upstream migration is primarily controlled by toppling failure of well-jointed basalts, allowing waterfall to maintain its steep gradient. However, the presence of active faults in the reach especially in vicinity and the potential for landslides in the immediate proximity pose significant geohazards, threatening both the stability of waterfall and surrounding landscape. Understanding these retreat dynamics is critical for assessing long-term landscape evolution and mitigating potential hazards in this tectonically active region.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100143"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145623396","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

In situ reaction and alteration of mudstone-cement interfaces at the Horonobe URL: Comparison between ordinary Portland cement and low alkaline cement Horonobe油田泥岩-水泥界面的原位反应与蚀变：普通硅酸盐水泥与低碱性水泥的对比

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-05-15 DOI: 10.1016/j.rines.2025.100097

Shuntaro Dei , Masahito Shibata , Kumi Negishi , Yuki Sugiura , Yuki Amano , Keith Bateman , James Wilson , Tatsunori Yokoyama , Saya Kagami , Masaki Takeda , Akitaka Sakurai , Yukio Tachi

{"title":"In situ reaction and alteration of mudstone-cement interfaces at the Horonobe URL: Comparison between ordinary Portland cement and low alkaline cement","authors":"Shuntaro Dei , Masahito Shibata , Kumi Negishi , Yuki Sugiura , Yuki Amano , Keith Bateman , James Wilson , Tatsunori Yokoyama , Saya Kagami , Masaki Takeda , Akitaka Sakurai , Yukio Tachi","doi":"10.1016/j.rines.2025.100097","DOIUrl":"10.1016/j.rines.2025.100097","url":null,"abstract":"<div><div>Interactions between cement and host rock in geological repositories for radioactive waste will result in the formation of a chemically disturbed zone which may affect repository safety. The chemical evolution at the interface between cement (Ordinary Portland Cement: OPC and Low Alkaline Cement: LAC) and mudstone after 11 years of <em>in situ</em> reactions at the Horonobe Underground Research Laboratory is described. Various analytical techniques were used to identify the key reactions at the cement-rock interface, which included cement dissolution, precipitation of secondary minerals such as calcite and C-(A-)S-H phases, cation exchange in clay minerals, and reduction of rock porosity. The results show that the mudstone contacted by both OPC and LAC was altered to depths of a few millimetres, whereas cement alteration was observed over a wider area in LAC.</div><div>Calcite formation occurred at both interfaces due to the ingress of carbonate ions in the groundwater. A relatively denser calcite layer formed at the OPC interface, suggesting a more favourable environment for calcite precipitation, as suggested by thermodynamic calculations. Furthermore, C-(A-)S-H phases were prevalent in the mudstone, suggesting complex interactions depending on porewater composition, pH, and mineral stability. The study also highlights the effects of cement-mudstone interactions on radionuclide migration, such as reduction of diffusivity due to reduced porosity and enhancement of sorption or incorporation into secondary minerals in the altered mudstone. Overall, the research provides valuable insights into long-term cement-mudstone interactions and their effects on radionuclide behaviour.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100097"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168683","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

Assessment of geomorphic indices, tectonic implications and channel dynamics along the Dibang river basin, Eastern Arunachal Himalaya 东喜马拉雅地邦河流域地貌指数、构造意义及河道动力学评价

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-10-09 DOI: 10.1016/j.rines.2025.100133

Rahul Das , Priyanka Negi , Pranjit Kalita

{"title":"Assessment of geomorphic indices, tectonic implications and channel dynamics along the Dibang river basin, Eastern Arunachal Himalaya","authors":"Rahul Das , Priyanka Negi , Pranjit Kalita","doi":"10.1016/j.rines.2025.100133","DOIUrl":"10.1016/j.rines.2025.100133","url":null,"abstract":"<div><div>The Eastern Arunachal Himalaya (EAH) serves as a crucial juncture between the geodynamic complexity of the Himalayan and the Mishmi orogeny and is considered to be seismically active. This study focuses on the Dibang Basin to evaluate its structural and morphotectonic characteristics using an integrated approach combining MATLAB-based geomorphic analysis, satellite remote sensing, and field surveys. Geomorphic indices were calculated for eight sub-catchments to assess active tectonics. River longitudinal profiles reveal knickpoints ranging from < 30 m to 845 m, concentrated along thrust zones, reflecting strong tectonic control. Hypsometric integrals (0.47–0.50) suggest youthful to mature topography, while basin asymmetry (0.28–0.59) and transverse topographic symmetry factors (0.13–0.33) indicate systematic rightward tilting across all sub-catchments. Stream length-gradient (SL) values (0–7347) and normalized channel steepness (Ksn: 51.1–171 m^0.9) highlight zones of anomalous geomorphic activity that coincide with major faults and knickzones. Field surveys along the mountain front show clear evidences of active tectonics, such as tilted terraces, steep scarps, and differential uplift. Three terrace levels are identified on the Deopani and Iphipani tributaries, and two along Sirki Nala, indicating episodic uplift. Notably, terrace deposits along Iphipani River are thrusted up to 50 m by the Mishmi thrust. Structural features such as discontinuities and scarps further support ongoing tectonic activity. Moreover, channel migration analysis of the Dibang River from 1986 to 2021 reveals a consistent rightward shift, interpreted as a result of tectonic deformation along the mountain front. These findings underscore the active tectonic nature of the Dibang Basin within the EAH.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100133"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264951","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

Prioritizing groundwater recharge zones through morphometric and geospatial analysis: A case study of the Musi River basin,Telangana, India 通过形态计量学和地理空间分析确定地下水补给区的优先顺序：以印度特伦加纳邦Musi河流域为例

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-10-13 DOI: 10.1016/j.rines.2025.100136

Linga Swamy Jogu , Naveen Kumar Gardas

{"title":"Prioritizing groundwater recharge zones through morphometric and geospatial analysis: A case study of the Musi River basin,Telangana, India","authors":"Linga Swamy Jogu , Naveen Kumar Gardas","doi":"10.1016/j.rines.2025.100136","DOIUrl":"10.1016/j.rines.2025.100136","url":null,"abstract":"<div><div>Groundwater availability in the Archaean granitic basement, Proterozoic sedimentary rocks, and Deccan Traps of Telangana is strongly influenced by lithology, weathered-zone thickness, flow morphology, and structural features. Rapid population growth and urban expansion have intensified water demand, leading to acute groundwater depletion, particularly in the Musi River basin. The present study aims to delineate potential zones for groundwater recharge by: (i) computing linear, areal, and relief morphometric parameters for eight sub-basins; (ii) prioritizing sub-basins using Weighted Sum Analysis (WSA) informed by statistical correlations and validated against Analytical Hierarchical Process (AHP) results; and (iii) identifying dominant morphometric parameters using Principal Component Analysis (PCA). Eleven key morphometric parameters were considered and weighted according to hydrological significance. One-way ANOVA confirmed significant differences in groundwater recharge potential across priority classes (F = 12.36, p = 0.015). Results indicate that MSB-7 exhibits the highest recharge potential (suitability index = 2.79), while MSB-1 is the least suitable (index = 6.45). Based on index values, sub-basins were classified into four priority categories, with approximately 47 % of the basin falling under ‘very good’–‘good’ zones. PCA revealed that drainage density, drainage texture, and stream frequency (PC1; 33.29 % variance) and relief-related parameters (PC2; 32.69 % variance) are the most influential controls on recharge. These findings provide actionable guidance for targeted watershed interventions including check dams, percolation tanks, and rainwater harvesting to enhance groundwater sustainability in the Musi River basin.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100136"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324168","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

Evolution of Char lands in the Padma River in Bangladesh and its impacts on planform morphology of the river 孟加拉国帕德玛河中查尔土地的演变及其对河流平面形态的影响

Results in Earth Sciences Pub Date : 2025-12-01 Epub Date: 2025-02-18 DOI: 10.1016/j.rines.2025.100075

MD. Raihanul Islam, Shovon Mohonto, Fahmida Noor

{"title":"Evolution of Char lands in the Padma River in Bangladesh and its impacts on planform morphology of the river","authors":"MD. Raihanul Islam, Shovon Mohonto, Fahmida Noor","doi":"10.1016/j.rines.2025.100075","DOIUrl":"10.1016/j.rines.2025.100075","url":null,"abstract":"<div><div>This paper examines the morphological evolution of the Char lands of the Padma River and its impact on planform morphology of the Padma. Drivers of the morphological evolution are also investigated. The study utilizes geospatial data derived from remotely sensed images taken between 1962 and 2022. Development through huge accretion and erosion in the Harirampur Char, repeated movement of Amirabad Char from the left bank to the right bank, and straight geomorphological connectivity between Paler Char and Chhitar Char were the main occurrences in the Char lands of the Padma. The morphological changes in Char lands are seen to enforce changes in the banklines around them and, in some cases, in the other co-existing Char lands. The expansion rate of Harirampur Char and the erosion rate in the banks around the Char were mutually related in a half-decadal delay mode. Due to this enforcement, the cyclic evolutions of Char lands contributed to the repeating channel pattern of the Padma. The dynamics of the Ganges-Jamuna confluence enhanced the morphological changes of the Padma, particularly in the upstream segment. High-magnitude floods contributed to making the morphological pattern of the Padma unstable.</div></div>","PeriodicalId":101084,"journal":{"name":"Results in Earth Sciences","volume":"3 ","pages":"Article 100075"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464575","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}

引用次数: 0