Physics and Chemistry of the Earth最新文献

筛选
英文 中文
An NMF-based qualified review of the trending topics in hydrology in the current era
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-19 DOI: 10.1016/j.pce.2025.103907
Sila Ovgu Korkut , Femin Yalcin , Erman Ulker
{"title":"An NMF-based qualified review of the trending topics in hydrology in the current era","authors":"Sila Ovgu Korkut ,&nbsp;Femin Yalcin ,&nbsp;Erman Ulker","doi":"10.1016/j.pce.2025.103907","DOIUrl":"10.1016/j.pce.2025.103907","url":null,"abstract":"<div><div>This study employs an AI-based approach using a non-negative matrix factorization tool, a kind of topic modeling method, to identify key research areas in hydrology. The observed hot topics were categorized into two main topic strands through a rigorous validity analysis which are “river basin” and “soil moisture.” Focusing on studies from January 1, 2022, to December 31, 2023, it examines the interconnected topics of \"river basin\" and \"soil moisture,\" narrowed down to 130 by expert review. These research items have been rigorously detailed in a tabular form for clarity and comprehensive understanding. Key findings indicate that 67 % of studies focus on “river basin,” 47 % on “soil moisture,” and 14 % on both, with “climate change” being a primary focus across these topics. The review highlights the increasing use of software, AI, and machine learning in hydrology, driven by digitalization. Optimization and forecasting are identified as prominent research areas, reflecting the ongoing relevance of climate crisis and water resource management in contemporary research.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103907"},"PeriodicalIF":3.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Three parameter calculation method for dry rock modulus and its application in feasibility evaluation of time-lapse seismic in G oilfield
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-13 DOI: 10.1016/j.pce.2025.103904
Shuchun Cao , Xiangyang Cao , Xiangsheng Bao , Chunpeng Li , Liyun Liu
{"title":"Three parameter calculation method for dry rock modulus and its application in feasibility evaluation of time-lapse seismic in G oilfield","authors":"Shuchun Cao ,&nbsp;Xiangyang Cao ,&nbsp;Xiangsheng Bao ,&nbsp;Chunpeng Li ,&nbsp;Liyun Liu","doi":"10.1016/j.pce.2025.103904","DOIUrl":"10.1016/j.pce.2025.103904","url":null,"abstract":"<div><div>This study focuses on the offshore GE Oilfield with typical marine turbidite sandstone reservoirs and rich reserves. Improving production efficiency is crucial, and OBN-based TLS monitoring is the key means. However, the Macbeth method for calculating dry rock modulus in TLS rock physics theory has limited applicability. It's hard to accurately assess TLS performance in different porous reservoirs, severely restricting in-depth reservoir understanding. To address this issue, this study innovatively proposes a three-parameter dry rock modulus TP method that comprehensively considers porosity, density, and effective pressure, based on the petrophysical test data of 9 representative rock samples. Through rigorous comparative verification of data from low-, medium-, and high-porosity rock samples, the results show the TP method can be stably used under different porosity conditions, with broad universality and high prediction accuracy. It's incorporated into the Gassmann equation for G Oilfield TLS evaluation. A relational template of the CWI difference of 16 reservoir types considering porosity and shale content versus water saturation and pressure changes is constructed, and the corresponding changing laws are clarified. Meanwhile, factoring in bound water and residual oil saturation, a comparative analysis of TLS evaluations of four reservoir rock samples (R1, R2, R3, R4) is performed. It aims to assess the feasibility of TLS monitoring for each reservoir under different conditions, including maximum fluid replacement, single fluid replacement, and the combined impact of fluid replacement and pressure drop. The results will offer a more accurate and efficient method for G Oilfield's TLS monitoring, strongly supporting the enhancement of production efficiency.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103904"},"PeriodicalIF":3.0,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrochemical characteristics, groundwater nitrate sources and potential health risks in a typical alluvial plain of northwest China
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-12 DOI: 10.1016/j.pce.2025.103903
Hao Liang , Peiyue Li , Vetrimurugan Elumalai , Yan Tian , Xiaomei Kou
{"title":"Hydrochemical characteristics, groundwater nitrate sources and potential health risks in a typical alluvial plain of northwest China","authors":"Hao Liang ,&nbsp;Peiyue Li ,&nbsp;Vetrimurugan Elumalai ,&nbsp;Yan Tian ,&nbsp;Xiaomei Kou","doi":"10.1016/j.pce.2025.103903","DOIUrl":"10.1016/j.pce.2025.103903","url":null,"abstract":"<div><div>Due to anthropogenic pressures and the unpredictable impacts of climate change, groundwater quality issue has emerged as a critical concern. This study was carried out to investigate the evolving geochemical profile, identify the nitrate sources and transformation mechanisms, and assess the associated health hazards of phreatic groundwater in the Hua District, China. To achieve this goal, 65 and 37 phreatic water samples were collected in in October 2018 and March 2023, respectively, and analyzed for main water quality parameters and stable isotopes (δ<sup>18</sup>O-H<sub>2</sub>O, δ<sup>2</sup>H-H<sub>2</sub>O, δ<sup>15</sup>N-NO<sub>3</sub><sup>-</sup>, and δ<sup>18</sup>O-NO<sub>3</sub><sup>-</sup>). Piper diagram and ionic ratios were used for understanding the hydrochemical types and its evolution, stable isotopes were employed for tracing nitrate source, and human health risk assessment was also conducted to quantify the human health risk caused by exposure to groundwater NO<sub>3</sub><sup>−</sup>. The results showed that main ion composition of groundwater hydrochemistry is controlled by the rock weathering and dissolution of carbonates and sulfate minerals. The chemical types of groundwater present an evolution trend from SO<sub>4</sub>•Cl-Ca•Mg to HCO<sub>3</sub>-Ca•Mg. Severe nitrate pollution was detected particularly in the central and southern regions, with peak nitrate concentrations reaching 442 and 271 mg/L in 2018 and 2023, respectively. Nitrate sources include sewage, soil organic nitrogen, and fertilizers. A shift from single (M&amp;S) to multiple nitrate sources in groundwater was observed, with nitrification as the primary transformation process. The non-carcinogenic risks for children and adults declined from 0.245–3.455 to 0.039–2.586 and from 0.236–2.392 to 0.031–1.469, respectively, from 2018 to 2023. Additionally, these risky regions are shifting northward. Hence, individuals in the north-central part should heighten their vigilance towards groundwater quality to reduce the threats of nitrate pollution to human health.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103903"},"PeriodicalIF":3.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fractal interpretation and forewarning of mining area disasters via microseismic time-space-energy nested
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-12 DOI: 10.1016/j.pce.2025.103905
Congcong Zhao , Zilong Zhou , Dazhao Song
{"title":"Fractal interpretation and forewarning of mining area disasters via microseismic time-space-energy nested","authors":"Congcong Zhao ,&nbsp;Zilong Zhou ,&nbsp;Dazhao Song","doi":"10.1016/j.pce.2025.103905","DOIUrl":"10.1016/j.pce.2025.103905","url":null,"abstract":"<div><div>The mining of deep metal deposits faces frequent disasters such as ground pressure. Although microseismic monitoring technology is widely used, the nonlinear and disordered characteristics of its signals increase the difficulty of disaster prediction. To effectively process and analyze chaotic microseismic signals, and apply them to disaster warning in mining sites. We introduce fractal theory to conduct data analysis and fractal interpretation of microseismic data, thereby revealing the evolution laws of microseismic events. A new warning method based on spatiotemporal energy fractal dimension is proposed by combining theoretical analysis, numerical simulation, and field experiments. Taking a copper mine in Xinjiang as an example, microseismic monitoring technology is used to obtain time-space-energy parameters of rock mass failure, and fractal dimension is applied to characterize the state and development trend of rock mass failure. By studying the mechanical properties of rock masses and the time-space-energy evolution of microseismic activity, the effectiveness and practicality of rock mass regional failure characterization and forewarning methods based on microseismic monitoring have been verified. Specifically, when the time series is 3.26 days and the spatial unit is 6.97 m ∗ 7.88 m ∗ 1.67 m, and the maximum 25 % energy fractal dimension interval is used as the threshold, the event prediction rate is 96.875 %.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103905"},"PeriodicalIF":3.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparative analysis of evapotranspiration models for lake Urmia: Implications for water resource management in semi-arid regions
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-12 DOI: 10.1016/j.pce.2025.103906
Jafar Chabokpour
{"title":"Comparative analysis of evapotranspiration models for lake Urmia: Implications for water resource management in semi-arid regions","authors":"Jafar Chabokpour","doi":"10.1016/j.pce.2025.103906","DOIUrl":"10.1016/j.pce.2025.103906","url":null,"abstract":"<div><div>This paper presents a detailed study of evapotranspiration estimation over the period of 1974–2017 in the Lake Urmia basin, Iran. Traditional empirical models like Penman-Monteith, Hargreaves-Samani, Priestley-Taylor, and Thornthwaite are compared in this study with some advanced soft computing techniques, including artificial neural networks, adaptive neuro-fuzzy inference systems, and support vector regression. The results show that the soft computing techniques always perform better, particularly ANN, in comparison to traditional models for both accuracy and adaptability over various climatic conditions. Among the traditional approaches, the Penman-Monteith model performs best. It also introduces a new ET model dimensionally consistent, developed through dimensional analysis, which works comparably to the Penman-Monteith model. This long-term trend analysis reveals a highly significant annual increase in ET of about 5.2 mm y<sup>−1</sup>, with a change point detected in the year 1995. The study further discusses the effect of land use changes on ET patterns, showing remarkable increases in agricultural and urban areas of about 23.7 % and 156.3 %, respectively, over the study period. Sensitivity analyses, in fact, show that accurate ET estimation is very important where temperature and solar radiation measurements are concerned. In this respect, different statistical techniques like wavelet analysis and principal component analysis will be used to create nuanced insight into ET dynamics within the Lake Urmia basin. Moreover, the paper investigates models' performance for differing climatic conditions and their ability to capture extreme ET events. In this respect, the comprehensive approach to and the intercomparison of ET processes in semi-arid regions presented in this study are very useful.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103906"},"PeriodicalIF":3.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Naturally occurring radionuclides and potentially toxic elements in mine waters from artisanal mining sites within Ife-Ilesha schist-belt in Nigeria
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-12 DOI: 10.1016/j.pce.2025.103902
Matthew Omoniyi Isinkaye , Paulinah Oyindamola Fasanmi , Hamid Osman , Mayeen Uddin Khandaker
{"title":"Naturally occurring radionuclides and potentially toxic elements in mine waters from artisanal mining sites within Ife-Ilesha schist-belt in Nigeria","authors":"Matthew Omoniyi Isinkaye ,&nbsp;Paulinah Oyindamola Fasanmi ,&nbsp;Hamid Osman ,&nbsp;Mayeen Uddin Khandaker","doi":"10.1016/j.pce.2025.103902","DOIUrl":"10.1016/j.pce.2025.103902","url":null,"abstract":"<div><div>The Ife-Ilesha schist belt in southwest Nigeria is one of the most mineralized schist belts in Nigeria. Large amount of wastes are generated during mining processes and accumulate as tailings within the mining environment. These tailings, which contain high concentrations of natural radionuclides and potentially toxic elements, are washed into mining ponds in the mining environment. The water in these mining ponds is utilized by miners and populations around the mining sites, thereby causing serious negative health effects on humans and the environment. Water samples were collected from mining pits and waste water ponds in five gold mining sites and a kaolin mining site within the Ife-Ilesha schist belt. Activity concentrations of natural radionuclides (<sup>40</sup>K, <sup>238</sup>U, and <sup>232</sup>Th) and potential toxic elements (PTEs) have been measured using gamma and atomic absorption spectroscopies. The results show that average concentrations of <sup>40</sup>K, <sup>238</sup>U, and <sup>232</sup>Th in the mine waters are 217 ± 40, 10 ± 09 and 16 ± 02 Bq/kg, which are far higher than their permissible level in water. The average concentrations PTEs decrease according to the sequence; Zn &gt; Cr &gt; Cu &gt; Pb &gt; As &gt; Cd &gt; Ni. The concentrations of As, Cd and Cr, exceeded their respective limits in mine water. Based on the results of this research, it can be concluded that the mine waters pose significant radiological risks. The results of PTEs show potential risks to both humans and the environment from the mine waters.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103902"},"PeriodicalIF":3.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization and potential use of Djiboutian clays: Adsorption studies for the removal of heavy metal from wastewater
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-07 DOI: 10.1016/j.pce.2025.103898
Mohamed Osman Awaleh , Youssouf Djibril Soubaneh , Leila Farah Adawe , Alexandre Coulombe , Mohamed Abdillahi Robleh , Moussa Mahdi Ahmed , Nima Moussa Egueh , Omar Assowe Dabar , Mahamoud Ali Chirdon , Ibrahim Houssein Kadieh
{"title":"Characterization and potential use of Djiboutian clays: Adsorption studies for the removal of heavy metal from wastewater","authors":"Mohamed Osman Awaleh ,&nbsp;Youssouf Djibril Soubaneh ,&nbsp;Leila Farah Adawe ,&nbsp;Alexandre Coulombe ,&nbsp;Mohamed Abdillahi Robleh ,&nbsp;Moussa Mahdi Ahmed ,&nbsp;Nima Moussa Egueh ,&nbsp;Omar Assowe Dabar ,&nbsp;Mahamoud Ali Chirdon ,&nbsp;Ibrahim Houssein Kadieh","doi":"10.1016/j.pce.2025.103898","DOIUrl":"10.1016/j.pce.2025.103898","url":null,"abstract":"<div><div>The aim of this study was to evaluate the potential use of the two biggest clay deposits from the Djibouti region as raw material for wastewater treatment and for the production of ceramics. The present study is the first to investigate the kinetics, sorption isotherms, hysteresis of Cu and Cd on two clays from the East African Rift System (EARS). Djiboutian clays (DCs) were characterized by a rapid uptake of these heavy metals with an equilibrium time of 400 min and uptake ranging from 48.8% to 97.4% at high initial metal concentrations (15 mg L<sup>−1</sup>) in the medium. A high adsorption coefficient (k<sub>d</sub><sup>S</sup>) values, from 8.31 to 20.80 L g<sup>−1</sup>, were observed for Cu, indicating a strong affinity of this metal for both clays. The k<sub>d</sub><sup>S</sup> values for Cd (0.29–3.64 L g<sup>−1</sup>) were significantly lower, suggesting different interaction mechanisms. These results are consistent with the Freundlich constant (k<sub>f</sub>) values obtained for Cu (8.88–1.05 mg g<sup>−1</sup>(L·mg<sup>−1</sup>)<sup>1/<em>n</em></sup>) and Cd (0.80–1.05 mg g<sup>−1</sup>(L·mg<sup>−1</sup>)<sup>1/<em>n</em></sup>) sorption isotherms onto DCs clays. Furthermore, desorption process exhibited high hysteresis index (HI) values (2.18–2.33) for Cu, suggesting strong sequestration on both DCs. These sorption behaviors can be associated with the properties of both Djiboutian clays whose characterization revealed large specific surface areas (62.7–64.8 m3/g), high open porosity (44.4–51.2%), and the presence of organic matter and negatively charged clay minerals such as illite, which interact well with divalent metals. Characterization of both clays and the chemical data of DCs plotted on a ternary diagram (SiO<sub>2</sub> <sup>−</sup> Al<sub>2</sub>O<sub>3</sub>−other oxides) suggested that these clays can be applied as raw materials for structural ceramic products. The study underscores the potential of DCs for trapping Cu and Cd pollutants from wastewater and for producing Class BIIb ceramics<sup>.</sup></div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103898"},"PeriodicalIF":3.0,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Refinement of ICESat-2 derived inland water surface levels with the TG20 local geoid model: In the case of Türkiye lakes
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-06 DOI: 10.1016/j.pce.2025.103900
Yunus Kaya , Fusun Balik Sanli , Saygin Abdikan
{"title":"Refinement of ICESat-2 derived inland water surface levels with the TG20 local geoid model: In the case of Türkiye lakes","authors":"Yunus Kaya ,&nbsp;Fusun Balik Sanli ,&nbsp;Saygin Abdikan","doi":"10.1016/j.pce.2025.103900","DOIUrl":"10.1016/j.pce.2025.103900","url":null,"abstract":"<div><div>This study examined the contribution of the Türkiye Geoid 2020 (TG20) local gravitational model to water height estimation using ICESat-2 ATL13 data. We tested eight separate lakes in Türkiye to achieve this aim. The EGM2008 values were determined by a comparison of the orthometric heights derived from ATL13 data and the ellipsoidal heights derived from ATL03 data. Subsequently, the corresponding latitude and longitude values within the local gravitational model were obtained and integrated into the ICESat-2 data. The root mean square error (RMSE) for the unfiltered and filtered ATL13<sub>EGM2008</sub> data was 0.66 <em>m</em> and 0.53 <em>m</em>, respectively. The filtering method in the ATL13<sub>TG20</sub> data resulted in an average improvement of the RMSE from 0.62 <em>m</em> to 0.27 <em>m</em>. The local gravity model refinement tested in 8 different lakes showed an RMSE improvement ranging from 17% to 71%. This study demonstrates that local gravity models significantly improve the vertical accuracy of ICESat-2.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103900"},"PeriodicalIF":3.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","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 geothermal water environment using multi-influencing factor analysis method: A case study of Reshuiwei geothermal field
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-05 DOI: 10.1016/j.pce.2025.103896
Weiwu Ma , Cheng Peng , Shams Forruque Ahmed , Chong Yang , Gang Liu
{"title":"Assessment of geothermal water environment using multi-influencing factor analysis method: A case study of Reshuiwei geothermal field","authors":"Weiwu Ma ,&nbsp;Cheng Peng ,&nbsp;Shams Forruque Ahmed ,&nbsp;Chong Yang ,&nbsp;Gang Liu","doi":"10.1016/j.pce.2025.103896","DOIUrl":"10.1016/j.pce.2025.103896","url":null,"abstract":"<div><div>Geothermal water environment assessment is crucial to the utilization. Reshuiwei geothermal field has more resources than others in Hunan province. However, existing methods has some problems such as complicated analysis, need much data and/or rely more on geographic information system (GIS). Due to research limitations, data is insufficient. Thus, using existing methods in this study is challenging. Therefore, we develop ‘multi-influencing factor analysis’ method to assess this geothermal water environment. The ‘multi-influencing factor’ including gas composition, physiochemical characteristics, variations of essential ions and indicators, corrosion and scaling possibilities of geothermal water. The methodology is: First, the original data are gathered by shallow drilling and gas sampling equipment. Second, data is initially analyzed by cooperative departments. Finally, using proposed method, we empirically evaluate the geothermal water environment by considering outcomes of 4 elements. Results show that gas of geothermal water is mainly composed of O<sub>2</sub> and N<sub>2</sub>. Small contents of H<sub>2</sub>S are spotted. Geothermal water is depleted in Mg<sup>2+</sup>, Cl<sup>−</sup>, enriched in Na<sup>+</sup>, <span><math><mrow><msubsup><mtext>HCO</mtext><mn>3</mn><mo>−</mo></msubsup></mrow></math></span>, SiO<sub>2</sub>. Special substances such as <span><math><mrow><msubsup><mtext>SiO</mtext><mn>3</mn><mrow><mn>2</mn><mo>−</mo></mrow></msubsup></mrow></math></span> and F<sup>−</sup> are also spotted. Due to potential negative impacts of O<sub>2</sub>, H<sub>2</sub>S, SiO<sub>2</sub>, <span><math><mrow><msubsup><mtext>SiO</mtext><mn>3</mn><mrow><mn>2</mn><mo>−</mo></mrow></msubsup></mrow></math></span> and F<sup>−</sup> on geothermal water environment, they must be considered in future. The main ions and indicators of geothermal water show stable variations. Geothermal water exhibits low corrosion, reduced scale formation and is less likely to develop calcium carbonate scale. The geothermal water environment is stable and less erosive, which is beneficial for utilization. Geothermal resource exploitation would benefit from the proposed approach and results.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103896"},"PeriodicalIF":3.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimum design of diversion weirs with grey wolf optimization
IF 3 3区 地球科学
Physics and Chemistry of the Earth Pub Date : 2025-03-05 DOI: 10.1016/j.pce.2025.103899
Tulay Sugra Kucukerdem Ozturk, Kemal Saplıoğlu
{"title":"Optimum design of diversion weirs with grey wolf optimization","authors":"Tulay Sugra Kucukerdem Ozturk,&nbsp;Kemal Saplıoğlu","doi":"10.1016/j.pce.2025.103899","DOIUrl":"10.1016/j.pce.2025.103899","url":null,"abstract":"<div><div>Water structures known as diversion weirs are built to control water flow and raise water levels. There are two distinct goals for this investigation. Making a minimal cost structure profile is the first step. Finding the constraint functions that are significant in various scenarios is the second step. While performing optimization, it is necessary to provide all constraint functions. On the other hand, while a single constraint function takes a value close to the limit value, the others move towards a safer area. The research looks at the most significant constraint functions considering this circumstance. One of the meta-heuristic techniques, the Grey Wolf algorithm, was used for these two goals. 500 iterations and 100 Grey Wolves were utilized while all models were running. Furthermore, every scenario will be executed thirty times, and the mean and standard deviation of the outcomes will be analyzed to assess the models' dependability. Finally, an interface that users who do not know how to use the program can easily use was created, and it was turned into a simple application.</div></div>","PeriodicalId":54616,"journal":{"name":"Physics and Chemistry of the Earth","volume":"139 ","pages":"Article 103899"},"PeriodicalIF":3.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信