Arabian Journal of Geosciences最新文献

{"title":"Geographically distributed trend and variability analysis of rainfall over the state of Haryana, India, using Climate Hazards Group InfraRed Precipitation with Station (CHIRPS) data dataset","authors":"Amit Kumar,&nbsp;Anil Kumar Singh,&nbsp;Ajay Kumar Taloor","doi":"10.1007/s12517-024-12110-3","DOIUrl":"10.1007/s12517-024-12110-3","url":null,"abstract":"<div><p>Climate change is impacting global rainfall patterns, subsequently affecting food security worldwide. This study aims to analyse long-term rainfall trends at finer spatial resolutions to understand the effects of changing rainfall patterns on agriculture and other socioeconomic activities. Point rain-gauge data presents limitations, such as non-uniform geographic coverage, issues of data continuity and availability, and lack of data in remote regions. These challenges make high-resolution spatial trend analysis using point gauge observations difficult. To overcome these limitations, the study utilizes the Climate Hazards Group InfraRed Precipitation with Station (CHIRPS) data, which merges remote sensing data (radar and satellite observations) calibrated with rain-gauge datasets. The CHIRPS dataset, available at three temporal scales with a 5-km spatial resolution, is used for trend analysis and drought monitoring. The research evaluates rainfall trends over Haryana and its 77 tehsils (talukas) at seasonal and annual scales from 1981 to 2020. Trend analysis was conducted using the Mann–Kendall Test, Spearman’s coefficient test, and the magnitude of the trends was assessed using Sen’s slope estimate and linear regression. The findings reveal an increasing trend in both annual and monsoonal rainfall across Haryana and its 77 tehsils, except for Naraingarh tehsil in northern Haryana. The western part of Haryana shows a statistically significant increase in annual and monsoon rainfall. Conversely, winter and post-monsoon seasons exhibit a decreasing trend across almost all tehsils, while pre-monsoon rainfall shows a significant rising trend in the southern and southeastern tehsils. The annual and monsoon rainfall patterns have shifted, increasing by 6.26% and 6.68% respectively from the 1981–2010 WMO standard period to 1991–2020. These changing patterns suggest potential impacts on agricultural and economic activity management.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518896","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":"Analysis of stress intensity factor for moving Griffith crack in a transversely isotropic strip under punch pressure","authors":"Ajeet Kumar Singh,&nbsp;Abhishek Kumar Singh,&nbsp;Ram Prasad Yadav,&nbsp;Sayantan Guha","doi":"10.1007/s12517-024-12098-w","DOIUrl":"10.1007/s12517-024-12098-w","url":null,"abstract":"<div><p>The present study is dedicated to analyzing Griffith crack transference within finitely thick and infinitely extending transversely isotropic strip. This strip is bounded by two parallel punches exerting a constant load distribution through Dirac delta functions, which are a consequence of plane waves propagating due to mechanical point loading. Moreover, the developed model employs coupled singular integral equations and Cauchy-type singularities. It is utilized to analyze the point load at the advancing crack tip, while leveraging Hilbert transformation properties to derive the stress intensity factor (SIF) under constant point loading in a closed analytical form. The investigation incorporates numerical computations and graphical representations to scrutinize the impact of various parameters, including crack length and speed, punch pressure, and different positions of the point load, on the SIF. These analyses are conducted for both transversely isotropic and isotropic material strips.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12517-024-12098-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453130","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":"K-means for earthquakes: disaggregation analyses of small events by considering wave components and soil types","authors":"Enrico Zacchei,&nbsp;Reyolando Brasil","doi":"10.1007/s12517-024-12113-0","DOIUrl":"10.1007/s12517-024-12113-0","url":null,"abstract":"<div><p>In this paper, k-means algorithm has been used to disaggregate seismic parameters to evaluate their inter-correlations. A goal is to quantify in a disaggregated way the weights and effects of each parameter with respect to other ones. From the database, about 4900.0 data, divided into 22.0 categories, have been collected. The main divisions regard the wave components in horizontal and vertical axis and the soil characteristics. The studied seismic zone is the “Norpirenaica oriental,” placed in the Pyrenees area between Spain and France, classified as a very high seismic hazard. Numerical and analytical analyses have been carried out to implement the algorithm. Preliminary analyses and results would quantify the role of the sand horizontal stratigraphy, the non-linear effects, the elasticity of the soil, and the energy damping phenomenon. Curves are plotted in stochastic distributions and elastic spectra accelerations. Results show good prediction for vertical spectral accelerations and for far and relative strong events. Rigorously, results are valid only for the studied seismogenic zone under predefined constrictions and ranges.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12517-024-12113-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453055","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":"Artificially obtained humic-like substances from chicken manure and symbionts in in vitro and in situ improvement of oil degradation in soil","authors":"Olga Senko,&nbsp;Nikolay Stepanov,&nbsp;Olga Maslova,&nbsp;Marina Gladchenko,&nbsp;Sergey Gaydamaka,&nbsp;Aysel Aslanli,&nbsp;Elena Efremenko","doi":"10.1007/s12517-024-12105-0","DOIUrl":"10.1007/s12517-024-12105-0","url":null,"abstract":"<div><p>Alkaline hydrolysate of chicken manure (HCM) containing artificially formed humic-like substances (HLSs) was investigated in combination with specially loaded cells (bacteria and microalgae) for oil degradation in soil. After 7 days in the laboratory experiment, the oil biodegradation efficiency in the polluted soil (50 g oil/kg soil) was 5–78% in 11 soil samples depending on the soil characteristics and used combination of additives. Higher level of oil-degradation corresponded to soil with high initial concentration of humic substances (HSs) (85–107 g/kg of dry matter). The best result in bioremediation (degradation of 82% of oil for 7 days) was achieved in experiment under field conditions with the similar initial oil pollution in the soil, when the HCM was used as additive (up to 220 mg HLSs/kg dry soil) in combination with an artificial symbionts composed of <i>Rhodococcus erythropolis</i> and <i>Chlorella vulgaris</i> cells. The introduction of HCM into oil-polluted soil with the mentioned cells led to an increase in all controlled enzymatic activities (peroxidase, dehydrogenase, phosphatase, protease, amylase, and urease) in the soil. The observed effects testified to activation of cell metabolic processes in the soil. As a result, the introduction of HCM in combination with artificial symbionts into the soil increased the rate of oil biodegradation under environmental conditions up to 1.8 times.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447385","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":"Assessing the stabilization impact of silica fume and phosphogypsum on hydro-mechanical characteristics of clayey sand","authors":"Muhammad Waleed,&nbsp;Fahad Alshawmar,&nbsp;Muhammad Abu-Bakr Jamil,&nbsp;Turab H. Jafri","doi":"10.1007/s12517-024-12108-x","DOIUrl":"10.1007/s12517-024-12108-x","url":null,"abstract":"<div><p>This work investigates the soil stabilization impact of adding silica fume and phosphogypsum on the hydro-mechanical behavior of clayey sand. Laboratory tests were performed on natural soil samples containing 5%, 10%, 15%, and 20% of silica fume and 3%, 6%, 9%, and 12% of phosphogypsum by weight of dry soil. The tests included particle size distribution, compaction characteristics, liquid limit, plastic limit, direct shear test, and hydraulic conductivity. The addition of phosphogypsum from 3 to 6% by weight of dry soil improved the engineering properties of the soil, resulting in an increase in the maximum dry density from 15.73 to 16.22 kN/m³. The highest shear strength of 17.91 kPa was obtained with an addition of 6% of phosphogypsum waste by the weight of dry soil. Similarly, a 10% substitution of silica fume in natural soil resulted in the highest shear strength of 20.37 kPa, providing improved resistance against liquefaction. The results show that the addition of phosphogypsum and silica fume stabilizers can be successfully used to treat clayey sand for various construction activities. The research outcomes will help engineers and construction professionals in implementing cost-effective and sustainable solutions for soil stabilization of clayey sand in practical applications.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451141","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":"Impact of climate change on drought in the Wadi Lakhdar watershed, North Algeria","authors":"Amine Diaf,&nbsp;Fayçal Djellouli,&nbsp;Abderrahmane Nekkache Ghenim","doi":"10.1007/s12517-024-12112-1","DOIUrl":"10.1007/s12517-024-12112-1","url":null,"abstract":"<div><p>In Algeria, one of the most alarming effects of climate change is drought. These periods of low rainfall have significant social and environmental implications, prompting investigations into management strategies, associated risks, and resulting crises. This study focuses on the Wadi Lakhdar watershed, a semi-arid region in northwestern Algeria, aiming to demonstrate the historical presence of drought and its impact on the environment and agriculture. To quantify long-term meteorological droughts and identify wet and dry periods from 1999 to 2021, we will utilize three drought indices: the Standardized Precipitation Index (SPI-12 months), the Standardized Precipitation and Evapotranspiration Index (SPEI-12 months), and the Palmer Drought Severity Index (PDSI-12 months). These indices are currently valuable tools for implementing various countermeasures, including drought early warning systems, monitoring, and contingency planning. Our analysis employing SPI, SPEI, and PDSI data will reveal distinct value ranges for wet years (1.01 to 2 for SPI, 0.64 to 1.28 for SPEI, and 1.35 to 2.68 for PDSI) and extremely dry years (− 1.07 to − 2.1 for SPI, − 0.68 to − 1.34 for SPEI, and − 1.43 to − 2.81 for PDSI). The wettest years were 2009, 2010, and 2013, while the driest years occurred in 2000, 2005, 2006, and 2007. Understanding drought characteristics is crucial for effective drought management. Drought indices provide a practical way to convert vast amounts of data into quantitative information for applications such as drought forecasting, communication of drought severity levels, and raising public awareness about the potential consequences of drought. This study’s social benefit lies in raising public awareness of these implications and anticipated consequences.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443309","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":"Retraction Note: Effects of size and strain rate on the mechanical behaviors of rock specimens under uniaxial compression","authors":"Qingbin Meng,&nbsp;Mingwei Zhang,&nbsp;Lijun Han,&nbsp;Hai Pu,&nbsp;Hao Li","doi":"10.1007/s12517-024-12099-9","DOIUrl":"10.1007/s12517-024-12099-9","url":null,"abstract":"","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443308","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":"The effects of pervasive dolomitization on the geochemical records of Cambrian series-3 evaporative carbonates in Bachu Uplift, China","authors":"Ngong Roger Ngia,&nbsp;Mingyi Hu,&nbsp;Quansheng Cai","doi":"10.1007/s12517-024-12095-z","DOIUrl":"10.1007/s12517-024-12095-z","url":null,"abstract":"<div><p>The effects of pervasive dolomitization on geochemical records and the mechanism of formation of Cambrian series-3 evaporite-bearing dolomites in the Bachu Uplift are assessed from petrography, geochemistry, and fluid inclusion. Near-surface diagenetic dolomites (dolomicrite (DM), microbial (algal) dolomite (MD)) and shallow-deep diagenetic dolomites (fine- to medium-crystalline dolomite (FM) and medium- to coarse-crystalline dolomite (MC)) were identified. Secondary fracture and pore-filling cements (dolomite (CD), early-stage calcite (ESC)<i>,</i> later-stage calcite (LSC), gypsum/anhydrite, and authigenic quartz were identified. Weak relationships exist between δ¹³C, δ¹⁸O, ⁸⁷Sr/⁸⁶Sr, and Mg/Ca versus Mn/Sr ratios, which are tools used to evaluate the impact of the diagenetic environment on C-O-Sr isotope composition of the carbonates. The replacement dolomites (MD, FM, MC) and DC with high Mg/Ca ratios (0.61–1.23) have low depleted δ¹⁸O, δ¹³C values, compared to the ESC and LSC with more depleted δ¹⁸O, δ¹³C values, indicating that the C-O-Sr isotope composition suffered diagenetic alteration by higher-temperature and equilibrium isotopic fractionation. The decreasing trend of halogens/(Ca + Mg) ratios in DM and MD compared to the increasing trend in these ratios in FM, MC, and CD confirms that dolomitization had substantial effects on halogens/(Ca + Mg) ratios of dolomites formed in sabkha and evaporative-lagoon environment due to the mixing of dolomitization fluids with halite derived from seawater and halogen-enriched saline fluids during fluid-rock interaction. The DM and MD mechanisms of formation were respectively seepage-reflux penecontemporaneous dolomitization and microbial dolomitization of the underlying carbonate sediments and organic substrates at near-surface diagenetic burial settings in ancient sabkha environment. The ⁸⁷Sr/⁸⁶Sr, δ¹⁸O, δ¹³C values, and δ¹⁸O VSMOW values revealed that the FM and MC were formed during shallow-deep burial dolomitization from radiogenic-strontium, and Mg-enhanced saline dolomitization fluids at relatively high-temperatures. The growth of dolomite cement in fractures was the result of higher-temperature ⁸⁷Sr/⁸⁶Sr, Mg-enhanced saline basinal fluids squeezed upward and laterally along fractures and other permeable horizons by geothermal squeegee-fluid flows dolomitization mechanism from deep to shallow burial settings.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438884","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":"Site characterization using active and passive surface wave analysis: a case study for some representative sites in Addis Ababa, Ethiopia","authors":"Biruk Wolde,&nbsp;Atalay Ayele,&nbsp;Turfat Hailmariam,&nbsp;Zemenu Geremew","doi":"10.1007/s12517-024-12100-5","DOIUrl":"10.1007/s12517-024-12100-5","url":null,"abstract":"<div><p>The subsurface condition of Addis Ababa City is heterogeneous and distinctly varies from place to place, ranging from very soft soil formation to competent rock mass units. This study characterized subsurface variations and estimated site-specific average shear wave velocity changes within the upmost 30 m (Vs30) geological medium at representative sites. We implemented combined active-source Multichannel Analysis of Surface Waves (MASW) and passive-source Microtremor Array Measurements (MAM) surface wave methods to effectively characterize and estimate the shear wave velocity (Vs) of shallow and deep subsurface materials at nine selected sites in the city. The Vs30 of geological profile at the selected sites was attained by joint dispersion inversion analysis of active and passive surface wave data. The result shows that the Vs30 calculated at the selected sites in the city ranges from 256 to 1787 m/s. The study results were used for site classification of near-surface geological materials according to the Vs30 classification guideline proposed by the National Earthquake Hazards Reduction Program (NERHP) and Eurocode-8 (EC-8) classification. Based on Vs30 results, the near-surface materials at the representative sites of the study area are categorized as site types C and D as per NEHRP and as site types B and C as per EC-8. Exceptionally, the rocky Arat Killo site is classified as a site type A in accordance with both NEHRP and EC-8. In addition, we validated acquired shear wave velocity profiles with local geological and engineering geological mapping and geotechnical boreholes proximate to measured sites to control the final inversion quality of Vs values to the corresponding layers. Since this study is the first in Addis Ababa City, the findings will be used for preliminary local site characterization and site specific seismic response analysis.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411506","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":"Prospect evaluation of the Paleogene Sokor-1 reservoirs in Fana Field, Termit Basin (Niger Republic) using geophysical well logs and sedimentological data","authors":"Abass Yacoubou Issaka,&nbsp;Olugbenga A. Ehinola,&nbsp;Oladotun Oluwajana,&nbsp;Jerome Asedegbega","doi":"10.1007/s12517-024-12102-3","DOIUrl":"10.1007/s12517-024-12102-3","url":null,"abstract":"<div><p>The present study evaluated the Paleogene Sokor-1 clastic reservoirs in the Fana Field on the Agadem Block, Termit Basin, Niger Republic. The evaluation of the hydrocarbon prospect of the Field, which involved petrophysical analysis of six wells namely Fana_2, Fana E_1, Fana N_2, Fana W_1, Fana S_1, Fana SW_1, and sidewall core sample description of Fana_2 well. The petrophysical interpretation of the well-log data was carried out using Interactive Petrophysics software. The petrophysical properties of the hydrocarbon-bearing reservoirs were rated to be suitable reservoirs with average effective porosities varying from 25.8 to 31.6%, permeability varying from 123.6 to 427.7 mD, average water saturation values ranging from 15.2 to 33.0%, and the average range of hydrocarbon saturation is 67.0 to 84.8%. The values of volume of shale (V_sh) of the identified reservoirs indicated that the reservoirs are generally shaly to a high shale/clayey content. The dia-porosity and M-N cross plots revealed that the reservoirs of the Sokor-1 Formation are predominantly sandstone with shale/clay intercalations. The shale structural behaviour of the reservoirs revealed that the dominant shale was mainly dispersed and laminated shale volumes that could impact on the reservoir qualities. The spatial variations of petrophysical parameters indicated that lower ^N/_G values favour the northeast and southern part of the map while the south area has a higher average effective porosity value. This study identified the southern part of the Fana Field as the most prospective and should be considered for the future exploration and development of the Fana field.</p></div>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":"17 11","pages":""},"PeriodicalIF":1.827,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411376","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}