Geomagnetism and Aeronomy最新文献_第6页

Preflare Fluctuations of Radio Emission from Active Regions of the Sun According to Observations at RSTN 根据RSTN观测太阳活跃区域射电辐射的耀斑前波动

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-16 DOI: 10.1134/S0016793224700087

V. E. Abramov-Maximov, I. A. Bakunina

引用次数: 0

Possible Influence of Solar Activity on Trajectories of Extratropical Cyclones in the North Atlantic: An Update 太阳活动对北大西洋温带气旋轨迹的可能影响：最新资料

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-16 DOI: 10.1134/S001679322470004X

S. V. Veretenenko, P. B. Dmitriev

{"title":"Possible Influence of Solar Activity on Trajectories of Extratropical Cyclones in the North Atlantic: An Update","authors":"S. V. Veretenenko, P. B. Dmitriev","doi":"10.1134/S001679322470004X","DOIUrl":"10.1134/S001679322470004X","url":null,"abstract":"In this article we continue studying the influence of solar activity on the main trajectories of extratropical cyclones (storm tracks) in different parts of the North Atlantic during the cold half of the year (period of intense cyclogenesis). Long-term oscillations in the latitude of storm tracks in the areas located west and east of the Greenwich meridian are compared. It is shown that secular oscillations in latitudes of storm tracks (with periods of ∼80–100 years) are most distinctly pronounced in the western North Atlantic (longitudes 60°–40° W), weaken in the area of the Icelandic Low (30°−10° W), and completely disappear in the eastern part (0°−20° E), where multidecadal oscillations with periods of ∼50–60 years dominate. Bidecadal oscillations in cyclone trajectories (northward shift of trajectories during the declining phase and at the minima of even-numbered solar cycles) have the greatest amplitude in the region of the Icelandic Low and noticeably weaken east of Greenwich. It is shown that the shift of cyclone trajectories to the north in even cycles occurs under increased galactic cosmic ray (GCR) intensity compared to odd cycles. The data providing evidence for the influence of the stratospheric polar vortex on the position of North Atlantic cyclone trajectories are presented. It is suggested that possible reasons for oscillations in the vortex intensity are changes in the chemical composition and temperature regime of the middle polar stratosphere caused by variations in GCR fluxes and geomagnetic activity.","PeriodicalId":55597,"journal":{"name":"Geomagnetism and Aeronomy","volume":"64 7","pages":"1021 - 1032"},"PeriodicalIF":0.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Application of the Astronomical Theory of Climate Change to Explain Global Climate Events in the Late Pleistocene and Holocene 气候变化天文学理论在解释晚更新世和全新世全球气候事件中的应用

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-16 DOI: 10.1134/S0016793224700051

V. M. Fedorov, D. M. Frolov

{"title":"Application of the Astronomical Theory of Climate Change to Explain Global Climate Events in the Late Pleistocene and Holocene","authors":"V. M. Fedorov, D. M. Frolov","doi":"10.1134/S0016793224700051","DOIUrl":"10.1134/S0016793224700051","url":null,"abstract":"The study demonstrates the synchronicity of the positive and negative phases of summer irradiation of the Northern Hemisphere in the precession cycle with periods of global climate warming and cooling for the Late Pleistocene and Holocene. The cold phase 50–41.5 ka BP corresponds to the Shestikhinsky cooling in Eastern Europe and the development of glaciation in North America. The warm phase 41–30 ka BP accounts for climate warming in Europe (Bryansk interstadial, Paudorf, Gotwei warming) and in North America (Plum Point Interstadial). The period of maximum development of glaciation in Europe and North America is synchronized with the cold phase 29.5–17.5 ka BP. The warm phase 17–5.5 ka BP is associated with the transition from the cold Pleistocene to the relatively warm Holocene. The Little Ice Age falls on the cold phase 5 ka BP – 5000 CE. It is expected that warming of the climate with respect to the present will correspond to the Warm Epoch 5000–13 000 CE. Changes in solar radiation arriving in the first astronomical half of the year in 5° latitude zones were determined for all astronomical months of the tropical year for climatic precession extrema. This makes it possible to compare spatiotemporal changes in Earth’s solar climate during years of climate precession extrema.","PeriodicalId":55597,"journal":{"name":"Geomagnetism and Aeronomy","volume":"64 7","pages":"1033 - 1043"},"PeriodicalIF":0.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

The Link between Lengths and Amplitudes of the Eleven-Year Cycle for the Millennium Sunspot Index Series 千禧年太阳黑子指数系列11年周期的长度和振幅之间的联系

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-16 DOI: 10.1134/S0016793224700117

V. G. Ivanov

引用次数: 0

Effect of Corotating Interaction Regions of Solar Wind on GCR Intensity in 2D Modulation Problems 二维调制问题中太阳风旋转相互作用区对GCR强度的影响

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-16 DOI: 10.1134/S0016793224700154

M. S. Kalinin, M. B. Krainev, X. Luo, M. S. Podgieter

{"title":"Effect of Corotating Interaction Regions of Solar Wind on GCR Intensity in 2D Modulation Problems","authors":"M. S. Kalinin, M. B. Krainev, X. Luo, M. S. Podgieter","doi":"10.1134/S0016793224700154","DOIUrl":"10.1134/S0016793224700154","url":null,"abstract":"Сorotating interaction regions of solar wind flows with different velocities have actively been magnetohydrodynamically simulated for many years. However, the main goal is to predict heliospheric characteristics in Earth’s orbit, and so calculations are performed to distances of 1–1.5 AU. In the last decade, systematic magnetohydrodynamic calculations of corotating interaction regions up to much larger distances have appeared, which are necessary for studying recurrent variations in the intensity of galactic cosmic rays. Based on one of these calculations, we previously showed that, at least for one rotation of the Sun (Carrington rotation 2066, January–February 2008), the effect of corotating interaction regions on large-scale characteristics of the heliosphere that are important for GCR modulation and, therefore, the intensity averaged over longitude is significant. We assumed that the main principles of this effect of corotating interaction regions on GCRs can be studied both by 3D modeling of the GCR intensity and in much simpler 2D models. In this paper, we discuss the results, prospects, and shortcomings of such a 2D description of the effect of corotating interaction regions on the GCR intensity.","PeriodicalId":55597,"journal":{"name":"Geomagnetism and Aeronomy","volume":"64 7","pages":"1098 - 1108"},"PeriodicalIF":0.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Relationship of Asymmetries in the Distribution of Solar Tracer Activity and Generation of the Solar Magnetic Field 太阳示踪剂活性分布的不对称性与太阳磁场产生的关系

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-16 DOI: 10.1134/S0016793224700245

D. D. Sokolov, E. V. Yushkov

引用次数: 0

Study of Coronal Jets 研究日冕喷流

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-16 DOI: 10.1134/S0016793224700099

G. V. Yakunina

引用次数: 0

Solar UVB Radiation as an Exposure Factor Space Climate on the Spread of Large-Scale Epidemics 太阳UVB辐射作为暴露因子对大范围流行病传播的空间气候影响

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-16 DOI: 10.1134/S0016793224700105

S. N. Shapovalov, M. P. Chernysheva

引用次数: 0

Study of Solar Wind Influences on Earth’s Magnetic Field

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-09 DOI: 10.1134/S0016793224600024

Gishamol Mathew, P. G. Louie Frobel

引用次数: 0

Fractal Analysis of VLF Electric Field Changes Observed at Mathura in Relation to Moderate Shallow Earthquakes (M = 4.9–5.6, depth < 17 Km) Happened in India and Around

IF 0.7 4区地球科学

Geomagnetism and Aeronomy Pub Date : 2025-01-09 DOI: 10.1134/S0016793224601005

Raj Pal Singh, Sarita Sharma, Devbrat Pundhir

{"title":"Fractal Analysis of VLF Electric Field Changes Observed at Mathura in Relation to Moderate Shallow Earthquakes (M = 4.9–5.6, depth < 17 Km) Happened in India and Around","authors":"Raj Pal Singh, Sarita Sharma, Devbrat Pundhir","doi":"10.1134/S0016793224601005","DOIUrl":"10.1134/S0016793224601005","url":null,"abstract":"Fractal analysis of VLF electric field data obtained by using vertical antenna located at Chaumuhan, Mathura station (Lat., 27.5° N, Long., 72.68° E) has been carried out using Higuchi method for investigating the impact of moderate shallow earthquakes (M = 4.9–5.6, depth 4.44–16.7 Km) that occurred during February 1, 2016 to October 31, 2016 (excluding April 2016) on the fractal dimension of VLF data. The results of the analysis show that daily values of fractal dimension vary much above and below the monthly mean during the period of observations, 1–30 days before and 1–30 days after the onset of the quakes considered in the present study. The ranges of reductions and enhancements in fractal dimension from the monthly mean are 0.05–0.33 and 0.054–0.43 respectively while the percentage ranges of reductions and enhancements in its daily variation are 3.0–23.21 and 2.81–19.88% respectively. The observed variations in fractal dimension have also been studied in the light of other expected sources like, magnetic storms, lightning activity, local building noises, and instrumental errors which may affect the fractal dimension of the VLF data. It is noticed that the observed variations of fractal dimensions do not correspond to these spurious sources considered. Further, model describing the genesis of VLF emissions in preparatory zones of the impending seismic events and their mechanism of transmission to the observing station have also been discussed.","PeriodicalId":55597,"journal":{"name":"Geomagnetism and Aeronomy","volume":"64 1 supplement","pages":"S24 - S38"},"PeriodicalIF":0.7,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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