Zobrazeno 1 - 10
of 1 636
pro vyhledávání: '"Sunspot number"'
Autor:
S. Watari
Publikováno v:
Earth, Planets and Space, Vol 76, Iss 1, Pp 1-13 (2024)
Abstract Solar cycles have an asymmetrical shape with a fast rise and a slow decline, which varies from cycle to cycle. This makes it difficult to study the solar cycle phase dependence of the occurrence of intense solar-terrestrial events such as in
Externí odkaz:
https://doaj.org/article/f0b43c0236d44e0b8cc586ee7c9b6c83
Publikováno v:
Geology, Ecology, and Landscapes, Vol 8, Iss 2, Pp 194-207 (2024)
ABSTRACTThis study was carried out to monitor the shoreline changes and associated erosion along the coastal districts using multi-temporal Landsat digital data over the period from 1978 to 2020. The High Tide Line was delineated using Landsat Satell
Externí odkaz:
https://doaj.org/article/57faef0f094b4256b6aa56788bfbd321
Publikováno v:
Earth and Space Science, Vol 11, Iss 6, Pp n/a-n/a (2024)
Abstract The current study explores the relationship between solar variability and tropical cyclone (TC) activity using sunspot number (SSN) and TC best‐track data as respective proxies. We have considered six regions of the globe, for example, EP:
Externí odkaz:
https://doaj.org/article/483fa2f0f38e4a0d8062646bde224244
Publikováno v:
Water, Vol 16, Iss 19, p 2737 (2024)
Runoff prediction is of great importance to water utilization and water-project regulation. Although sun activity has been considered an important factor in runoff, little modeling has been constructed. This study put forward a forecast heuristic com
Externí odkaz:
https://doaj.org/article/22559e8057f54fd7a875231c2279aa6f
Akademický článek
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Autor:
J-L. Le Mouël, D. Gibert, V. Courtillot, S. Dumont, J. de Bremond d'Ars, S. Petrosino, P. Zuddas, F. Lopes, J-B. Boulé, M. C. Neves, S. Custódio, G. Silveira, V. Kossobokov, L. Coen, M. Gèze
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
The decryption of the temporal sequence of volcanic eruptions is a key step in better anticipating future events. Volcanic activity results from a complex interaction between internal and external processes, with time scales spanning multiple orders
Externí odkaz:
https://doaj.org/article/3dabdebf8ab54d2590b9cbf0ed599bf3
Publikováno v:
Natural Hazards Research, Vol 2, Iss 3, Pp 166-171 (2022)
Fire is a principal disturbance agent in Northeastern Asia forests with the highest fire radiative power globally. The limitation of the wide network of sites with long reconstructed fire histories restricts our understanding of factors forcing regio
Externí odkaz:
https://doaj.org/article/85d33e9e6a0340668c40fbbc447c8ea3
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 2, p 120 (2024)
China has six observing stations, providing over 52,000 handwritten sunspot drawings from 1947–2016. The observing stations are the Purple Mountain Astronomical Observatory (PMO), Yunnan Astronomical Observatory (YNAO), Qingdao Observatory Station
Externí odkaz:
https://doaj.org/article/179a4944d1ee4cf8a30a84a97cd0f46d
Publikováno v:
The Astronomical Journal, Vol 167, Iss 2, p 52 (2024)
The relative sunspot number is one of the major parameters for the study of long-term solar activity. The automatic calculation of the relative sunspot number is more stable and accurate as compared to manual methods. In this paper, we propose an alg
Externí odkaz:
https://doaj.org/article/3a2a581a5bc14d4d86ab2bce58b69946
Autor:
V. M. S. Carrasco, A. J. P. Aparicio, T. Chatzistergos, S. Jamali Jaghdani, H. Hayakawa, M. C. Gallego, J. M. Vaquero
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 65 (2024)
The Maunder Minimum was a period with significantly reduced solar activity between 1645 and 1715, approximately. The transition between the low solar activity in the Maunder Minimum and the subsequent “normal” regime of solar activity was gradual
Externí odkaz:
https://doaj.org/article/8b6ae801934d4efcbdde38f966c2ed3f