Aeolian Research最新文献

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Transport and deposition of microplastics and microrubbers during a dust storm (Sarakhs, northeast Iran) 沙尘暴期间微塑料和微橡胶的迁移和沉积(伊朗东北部萨拉赫斯)
IF 3.1 3区 地球科学
Aeolian Research Pub Date : 2024-09-30 DOI: 10.1016/j.aeolia.2024.100942
Sajjad Abbasi , Neda Hashemi , Nafiseh Khodabakhshloo , Monireh Mina , Mohammad Reza Yousefi , Andrew Turner
{"title":"Transport and deposition of microplastics and microrubbers during a dust storm (Sarakhs, northeast Iran)","authors":"Sajjad Abbasi ,&nbsp;Neda Hashemi ,&nbsp;Nafiseh Khodabakhshloo ,&nbsp;Monireh Mina ,&nbsp;Mohammad Reza Yousefi ,&nbsp;Andrew Turner","doi":"10.1016/j.aeolia.2024.100942","DOIUrl":"10.1016/j.aeolia.2024.100942","url":null,"abstract":"<div><div>Dust storms are important vehicles for the erosion and translocation of geogenic material in arid and semi-arid climates but little is known about their role in transporting microplastics (MPs). In this study, local soils (<em>n</em> = 20) and dusts deposited from a storm (<em>n</em> = 41) have been sampled from a remote region of northeastern Iran (Sarakhs) and the quantities and characteristics of MPs and microrubbers (MRs) determined using established techniques. In dusts, MPs and MRs were detected in 33 and 17 cases, respectively, with respective median and maximum concentrations of 0.48 and 23.0 MP g<sup>−1</sup> and 0.50 and 6.48 MR g<sup>−1</sup> and depositional fluxes of up to about 12 MP m<sup>−2</sup> <!-->h<sup>−1</sup> and 7 MR m<sup>−2</sup> <!-->h<sup>−1</sup>. In soils, MPs and MRs were detected in ten and eight cases, respectively, with respective median and maximum concentrations of 0.25 and 1.90 MP g<sup>−1</sup> and 3.27 and 14.3 MR g<sup>−1</sup>. Overall, the ratio of MPs in dusts to soils relative to MRs in dusts to soils was about 20, reflecting the greater mobility of the former type of particle. This can be attributed to the ready suspension and more favourable aerodynamic properties of fibrous MPs compared with fragmented MRs. A comparison of MPs in dusts and soils suggests a preferential long-range transport of fibres with certain characteristics (e.g., long, red and constructed of polypropylene), with HYSPLIT back trajectory modelling suggesting secondary (e.g., soil) sources to the south and southwest. Dust storms are important regional transporters of atmospheric MPs and MRs whose role is predicted to increase as desertification and the demands for potable water and plastics rise.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"70 ","pages":"Article 100942"},"PeriodicalIF":3.1,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142359010","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
Characterizing variability in geochemistry and mineralogy of western US dust sources 美国西部尘源的地球化学和矿物学变异特征
IF 3.1 3区 地球科学
Aeolian Research Pub Date : 2024-09-21 DOI: 10.1016/j.aeolia.2024.100941
Abby L. Mangum , Gregory T. Carling , Barry R. Bickmore , Nicholas Webb , DeTiare L. Leifi , Janice Brahney , Diego P. Fernandez , Kevin A. Rey , Stephen T. Nelson , Landon Burgener , Joshua J. LeMonte , Alyssa N. Thompson , Beth A. Newingham , Michael C. Duniway , Zachary T. Aanderud
{"title":"Characterizing variability in geochemistry and mineralogy of western US dust sources","authors":"Abby L. Mangum ,&nbsp;Gregory T. Carling ,&nbsp;Barry R. Bickmore ,&nbsp;Nicholas Webb ,&nbsp;DeTiare L. Leifi ,&nbsp;Janice Brahney ,&nbsp;Diego P. Fernandez ,&nbsp;Kevin A. Rey ,&nbsp;Stephen T. Nelson ,&nbsp;Landon Burgener ,&nbsp;Joshua J. LeMonte ,&nbsp;Alyssa N. Thompson ,&nbsp;Beth A. Newingham ,&nbsp;Michael C. Duniway ,&nbsp;Zachary T. Aanderud","doi":"10.1016/j.aeolia.2024.100941","DOIUrl":"10.1016/j.aeolia.2024.100941","url":null,"abstract":"<div><div>Dust events originate from multiple sources in arid and semi-arid regions, making it difficult to quantify source contributions. Dust geochemical/mineralogical composition, if the sources are sufficiently distinct, can be used to quantify the contributions from different sources. To test the viability of using geochemical and mineralogical measurements to separate dust-emitting sites, we used dust samples collected between 2018 and 2020 from ten National Wind Erosion Research Network (NWERN) sites that are representative of western United States (US) dust sources. Dust composition varied seasonally at many of the sites, but within-site variability was smaller than across-site variability, indicating that the geochemical signatures are robust over time. It was not possible to separate all the sites using commonly applied principal component analysis (PCA) and cluster analysis because of overlap in dust geochemistry. However, a linear discriminant analysis (LDA) successfully separated all sites based on their geochemistry, suggesting that LDA may prove useful for separating dust sources that cannot be separated using PCA or other methods. Further, an LDA based on mineralogical data separated most sites using only a limited number of mineral phases that were readily explained by the local geologic setting. Taken together, the geochemical and mineralogical measurements generated distinct signatures of dust emissions across NWERN sites. If expanded to include a broader range of sites across the western US, a library of geochemical and mineralogical data may serve as a basis to track and quantify dust contributions from these sources.</div></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"70 ","pages":"Article 100941"},"PeriodicalIF":3.1,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310738","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
Automatic identification of saltating tracks driven by strong wind in high-speed video using multiple statistical quantities of instant particle velocity 利用粒子瞬时速度的多个统计量自动识别高速视频中由强风驱动的盐渍化轨迹
IF 3.1 3区 地球科学
Aeolian Research Pub Date : 2024-09-21 DOI: 10.1016/j.aeolia.2024.100940
Hongji Zhou , Fanmin Mei , Chuan Lin , Mengjie Pu , Aiguo Xi , Jinguang Chen , Jin Su , Zhibao Dong
{"title":"Automatic identification of saltating tracks driven by strong wind in high-speed video using multiple statistical quantities of instant particle velocity","authors":"Hongji Zhou ,&nbsp;Fanmin Mei ,&nbsp;Chuan Lin ,&nbsp;Mengjie Pu ,&nbsp;Aiguo Xi ,&nbsp;Jinguang Chen ,&nbsp;Jin Su ,&nbsp;Zhibao Dong","doi":"10.1016/j.aeolia.2024.100940","DOIUrl":"10.1016/j.aeolia.2024.100940","url":null,"abstract":"<div><p>The evolution of saltating tracks driven by strong wind remains unknown due to the low accuracy or recall rates of saltating particle tracking algorithms (SPTs). Manual identification of saltating tracks becomes a primary bottleneck because of low efficiency, restricting the development of new SPTs with high accuracy. Herein, we proposed an optimized tree model for automatically identifying saltating tracks in the high-speed video under strong wind through establishing the dataset with multiple statistical quantities of instant saltating velocity (<em>MSQV</em>) and the workflow embracing the Tree-structured Parzen Estimator (TPE). The optimized Categorical Boosting model by the D3 dataset (CatBoost-D3) could be considered the best classifier among the tree models, owning the higher accuracy (0.9352), precision (0.9348), recall (0.9352), F1-score (0.9350) and area under an receiver operating characteristics curve (AUC, 0.9730), and lower time cost. The best performances were associated with the ensemble effect of critical and secondary features, distinct from the previous finding which revealed only the effect of critical features on enhancing AUC value. Additionally, one observed that the present model was comparable to other optimized tree model by the dataset with double-class and outperformed the other tree model by the dataset with multi-class. The present work offers a new avenue for identifying hop trajectories and tracking sand particle flow via machine learning in the future, and a new channel for reunderstanding the relationship between midair collision and saltation under strong wind through automatic identification of saltating tracks.</p></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"70 ","pages":"Article 100940"},"PeriodicalIF":3.1,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142271896","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
Regional differences in the grain size characteristics of surface sediments from typical barchan dunes in arid zones 干旱地区典型巴查沙丘表层沉积物粒度特征的地区差异
IF 3.1 3区 地球科学
Aeolian Research Pub Date : 2024-07-22 DOI: 10.1016/j.aeolia.2024.100939
Ning Jiang, Hong Cheng
{"title":"Regional differences in the grain size characteristics of surface sediments from typical barchan dunes in arid zones","authors":"Ning Jiang,&nbsp;Hong Cheng","doi":"10.1016/j.aeolia.2024.100939","DOIUrl":"10.1016/j.aeolia.2024.100939","url":null,"abstract":"<div><p>The grain size characteristics of aeolian sediments are the combined result of sand sources, regional airflow regimes, dune morphology, etc., and are essential for understanding the formation and evolution of barchan dunes. Based on field investigations and laboratory experimental data, in this paper, we explored differences in the grain size characteristics of the surface sediments of barchan dunes at the southeastern edge of the Taklimakan Desert (TKLM-SE), the western (QB-W) and southern parts of the Qaidam Basin Desert (QB-S), the sand belt connecting the Badain Jaran Desert and the Tengger Desert (BT-B), and their responses to sand sources, dune morphology, and wind regimes. The main results were as follows: (i) The mean grian size distribution patterns of the windward slope toe to the leeward slope toe through the dune crest/ridge varied with different transects of the barchan dunes and different deserts, showing four types including gradually fining (GF), gradually coarsening (GC), coarsening followed by fining (CF), and fining followed by coarsening (FC). The patterns were GF and CF in the TKLM-SE; GF, GC, and FC in the BT-B; GF, GC, and CF in the QB-W; and GF in the QB-S. (ii) The interdune sediments provided the source material for the formation and development of barchan dunes and their grain size varied in different deserts. The interdune sediments were composed of gravel and very fine sand in the TKLM-SE, while they were composed of medium and fine sand in the QB-W, QB-S, and BT-B. (iii) The windward side of the barchans varied with different wind directions, and dune height affected dune surface airflow velocity and direction, changing the pattern of grain size distribution on the dune surface. The wind regime over a ten-day or half-month scale could explain the variance in the grain size distribution patterns better than that on an annual scale. (iv) Grain size characteristics of dune surface sands changed with dune shape due to changes in the surface airflow velocity and direction and the sediment-carrying capacity of the airflow. With an increasing ratio of dune height to dune width, the grain size of the dune crest sands became coarser. These results help advance our understanding of the grain size characteristics of barchan dunes and regional variabilities in their patterns.</p></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"70 ","pages":"Article 100939"},"PeriodicalIF":3.1,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141960374","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
Carcinogenic and non-carcinogenic health risks of heavy metals in windborne sediments from a residential area (Case study: Tabas, Iran) 居民区风载沉积物中重金属的致癌和非致癌健康风险(案例研究:伊朗塔巴斯)
IF 3.1 3区 地球科学
Aeolian Research Pub Date : 2024-07-06 DOI: 10.1016/j.aeolia.2024.100938
Hojat Emami , Mahsa Memarzadeh , Fateme Naghizade Asl
{"title":"Carcinogenic and non-carcinogenic health risks of heavy metals in windborne sediments from a residential area (Case study: Tabas, Iran)","authors":"Hojat Emami ,&nbsp;Mahsa Memarzadeh ,&nbsp;Fateme Naghizade Asl","doi":"10.1016/j.aeolia.2024.100938","DOIUrl":"https://doi.org/10.1016/j.aeolia.2024.100938","url":null,"abstract":"<div><p>Dust particles are considered as a very important way of soil contamination by heavy metals. Therefore, this study was conducted to evaluate the concentration of heavy metals and their health risk in windborne sediments. For this purpose, sediment traps were installed in five dominant wind directions including north, northeast, northwest, west, and southwest, and center of Tabas city (Iran) to collect the suspended sediments in the air. Sediment sampling was conducted monthly from January to December 2021. The concentrations of heavy metals were measured using atomic adsorption method followed by extraction by aqua regia, and the carcinogenic and non-carcinogenic health risks of heavy metals for children and adults were evaluated during different months of the year. According to the results, the maximum and minimum amounts of windborne sediments found in northwest (85.66 gm<sup>−2</sup>) and west (29.3 gm<sup>−2</sup>), respectively. Monthly variations in windborne sediments discharge also revealed that the maximum amounts of windborne sediments occurred in September and November 2021 from northeast (125 and 117 mgkg<sup>−1</sup>, respectively). The maximum concentrations of cadmium (0.82 mg/kg) were found in the west of Tabas, while those of lead (192.72 mg/kg), and nickel (227.34 mg/kg) were obtained in the city center. In addition, the highest carcinogenic and non-carcinogenic risks belonged to nickel and the lowest risks were obtained for lead. Also, the carcinogenic risk of cadmium was higher than lead but lower than nickel. In general, the carcinogenic and non-carcinogenic risks of the studied heavy metals were low (less than 1).</p></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"70 ","pages":"Article 100938"},"PeriodicalIF":3.1,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141595120","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 of 21 years of dust events across four West Texas regions 德克萨斯州西部四个地区 21 年沙尘事件的特征描述
IF 3.3 3区 地球科学
Aeolian Research Pub Date : 2024-05-20 DOI: 10.1016/j.aeolia.2024.100930
M.C. Robinson, K. Ardon-Dryer
{"title":"Characterization of 21 years of dust events across four West Texas regions","authors":"M.C. Robinson,&nbsp;K. Ardon-Dryer","doi":"10.1016/j.aeolia.2024.100930","DOIUrl":"https://doi.org/10.1016/j.aeolia.2024.100930","url":null,"abstract":"<div><p>Dust events are caused by strong winds that lift dust particles into the air. Due to surrounding deserts and agriculture, West Texas experiences many dust events. This study examines dust events that occurred between 2000 and 2020 across four locations: Amarillo, Lubbock, Midland, and El Paso. A total of 1,834 dust events were identified across the four locations with an average of 22 dust events annually. 227 dust events were observed in Amarillo, 609 in Lubbock, 545 in Midland, and 453 dust events were observed in El Paso. A slight increasing trend of dust events over time was observed for Amarillo, Lubbock, and Midland while El Paso showed a decreasing trend. Most dust events occurred during the spring to early summer months and they lasted an hour or less. Many dust events occurred during times of drought and periods of La Niña. Separation of the dust events based on the meteorological disturbance that caused them (convective vs. synoptic) showed that synoptic disturbances contribute to &gt;60 % of the dust events, while convective disturbances were responsible for most of the remaining. Synoptic disturbances were predominately in spring while convective disturbances were common in the early summer months. A comparison of meteorological parameters measured during each disturbance shows that synoptic dust events were associated with lower temperatures, dew point, and relative humidity, but with higher wind speeds and gusts.</p></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"67 ","pages":"Article 100930"},"PeriodicalIF":3.3,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1875963724000417/pdfft?md5=b56fd224fd238b77ad4aefbe25b1722b&pid=1-s2.0-S1875963724000417-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141067923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reconstructing star dune dynamics using ground penetrating radar – How movement shapes complex surface structures 利用地面穿透雷达重建星形沙丘动态--运动如何塑造复杂的地表结构
IF 3.3 3区 地球科学
Aeolian Research Pub Date : 2024-05-18 DOI: 10.1016/j.aeolia.2024.100920
Manuel Herzog , Alexander Schmitt , Olaf Bubenzer
{"title":"Reconstructing star dune dynamics using ground penetrating radar – How movement shapes complex surface structures","authors":"Manuel Herzog ,&nbsp;Alexander Schmitt ,&nbsp;Olaf Bubenzer","doi":"10.1016/j.aeolia.2024.100920","DOIUrl":"https://doi.org/10.1016/j.aeolia.2024.100920","url":null,"abstract":"<div><p>The evolution of large star dunes, because of their remote location, size and surface complexity, is barely recorded and understood. This lack of understanding applies to surface and subsurface features alike. In order to detect the transformation, the detailed subsurface stratigraphy and the relative chronology of large star dunes, we used ground penetrating radar (GPR) on all major arms of a complex star dune of Erg Chebbi, south-eastern Morocco. We used a 350 MHz digital antenna from Geophysical Survey Systems, Inc (GSSI), reaching a depth of 12.5 m to identify main radar facies associated with former downwind dune flanks describing the depositional history. Our results enable the determination of former dune crest positions, their potential past movement and in consequence the construction of the paleo-dune topography. In accordance with simulated historical wind data, we found a potential sediment deficit on the south-eastern side of the dune. This also correlates with surface data describing an oblique form of the star dune and the spatial distribution frequency of its major arms. Our detailed recordings show, for the first time, the complex internal composition of all arms of one large star dune and surface sensitive form-flow interactions. Our results allow the discrimination of deposition phases and therefore, we have constructed a relative chronology as a basis for future sampling and the reconstruction of star dune evolution in general.</p></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"67 ","pages":"Article 100920"},"PeriodicalIF":3.3,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1875963724000314/pdfft?md5=9c20c075b4d75bb64e8ddd31f3c4c456&pid=1-s2.0-S1875963724000314-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141067922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The influence of backdune morphology on air flow dynamics through an excavated foredune notch 后沙丘形态对通过开挖前沙丘缺口的气流动力学的影响
IF 3.3 3区 地球科学
Aeolian Research Pub Date : 2024-05-15 DOI: 10.1016/j.aeolia.2024.100929
Duc Nguyen , Sarah Wakes , Mike Hilton
{"title":"The influence of backdune morphology on air flow dynamics through an excavated foredune notch","authors":"Duc Nguyen ,&nbsp;Sarah Wakes ,&nbsp;Mike Hilton","doi":"10.1016/j.aeolia.2024.100929","DOIUrl":"https://doi.org/10.1016/j.aeolia.2024.100929","url":null,"abstract":"<div><p>On many metropolitan and developed coasts foredunes are narrow, vegetated, highly stable and confined by hinterland development. Such foredunes are most likely to erode, rather than landward migration, in response to ongoing eustatic sea-level rise. Foredune notching may be undertaken on such coasts to facilitate sand transport through the foredune zone and accomplish degrees of foredune landward migration; however, the efficacy of this method has not been examined in relation to the backdune topography, which in many instances takes the form of a dyke or similar infrastructure.</p><p>Computational Fluid Dynamics (CFD) is used to investigate how the space behind a notch, and the slope of the seaward face of the backdune topography, modifies near-surface wind through foredune notches. Incident winds are simulated parallel to the notch long axis and the effects of changing backdune morphology on the secondary winds through the notch are examined. Swale widths between 3 and 53 m and hinterland gradients between 0° and 90° are examined.</p><p>Air flow through the notch is strongly influenced by the morphology of backdune infrastructure. Wind speed increases through the notch as the spacing behind the notch increases and the slope of the hinterland topography decreases. An increase in spacing reduces the landward extension of wind recirculation in the lee of the notch. To maximise notch efficiency and sediment accumulation in the lee of the foredune the minimum spacing should be 8 and 30 m when the slope of the backdune infrastructure is 20° and 90°, respectively.</p></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"67 ","pages":"Article 100929"},"PeriodicalIF":3.3,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1875963724000405/pdfft?md5=f4cc8ded9de28d8a73fcb3196ed9c189&pid=1-s2.0-S1875963724000405-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140950285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dune behavior in the Source Area of the Yellow River under climate changes observed from various remote sensing datasets 各种遥感数据集观测到的气候变化下黄河源区的沙丘行为
IF 3.3 3区 地球科学
Aeolian Research Pub Date : 2024-05-08 DOI: 10.1016/j.aeolia.2024.100928
Lukas Dörwald , Frank Lehmkuhl , Lucie Delobel , Deguo Zhang , Xiaoping Yang , Georg Stauch
{"title":"Dune behavior in the Source Area of the Yellow River under climate changes observed from various remote sensing datasets","authors":"Lukas Dörwald ,&nbsp;Frank Lehmkuhl ,&nbsp;Lucie Delobel ,&nbsp;Deguo Zhang ,&nbsp;Xiaoping Yang ,&nbsp;Georg Stauch","doi":"10.1016/j.aeolia.2024.100928","DOIUrl":"https://doi.org/10.1016/j.aeolia.2024.100928","url":null,"abstract":"<div><p>Sand dunes are a landscape feature with a quick response time to climate change and human influences (e.g. grazing, greening projects, and fixation structures). Their migration rates and their development can help to gather information about changing environmental conditions over time. The Source Area of the Yellow River (SAYR), located upon the Tibetan Plateau, is highly complex with topographical, hydrological, and climatological influences on active dunes, making it a good study area for these interactions. Based on remote sensing datasets, spanning the last 54 years, 415 dunes were mapped for migration rate calculations. Further, climate data from ERA-5 reanalysis and a local climate station was used to assess their changes within a changing climate. Generally, dune migration rates are rather slow with an average of 3.62 m y<sup>-1</sup>. In accordance, the averaged resultant drift potential (RDP) values are lower than 10 m3/s<sup>−3</sup>(−|-). Further, we assessed the density development of the main active barchan dune field in direct premise of the Yellow River. Throughout the past 54 years, we observed the emergence of more than 5 new barchans per square kilometer. This increase is likely attributed to higher sand flux from the Yellow River, which has resulted from increased discharge due to declining snowfall and rising precipitation levels.</p></div>","PeriodicalId":49246,"journal":{"name":"Aeolian Research","volume":"67 ","pages":"Article 100928"},"PeriodicalIF":3.3,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1875963724000399/pdfft?md5=b0eb8f186bbcaf6e30d7b3c9e4eb9b24&pid=1-s2.0-S1875963724000399-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140880348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evolution of Weichselian aeolian strata on a coarse-grained substrate in a rugged piedmont topography: A case study from the foothills of the eastern Sudetes Mts., Czechia 崎岖的山麓地形中粗粒基质上的魏希塞尔风化层的演变:捷克苏台德山脉东麓案例研究
IF 3.3 3区 地球科学
Aeolian Research Pub Date : 2024-05-04 DOI: 10.1016/j.aeolia.2024.100927
Jakub Holuša , Martin Hanáček , Daniel Nývlt , Barbara Woronko , Radim Stuchlík
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