globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2873
论文题名:
Large stationary gravity wave in the atmosphere of Venus
作者: Fukuhara T.; Futaguchi M.; Hashimoto G.L.; Horinouchi T.; Imamura T.; Iwagaimi N.; Kouyama T.; Murakami S.-Y.; Nakamura M.; Ogohara K.; Sato M.; Sato T.M.; Suzuki M.; Taguchi M.; Takagi S.; Ueno M.; Watanabe S.; Yamada M.; Yamazaki A.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期:2
起始页码: 85
结束页码: 88
语种: 英语
Scopus关键词: gravity wave ; numerical method ; planetary atmosphere ; upper atmosphere ; Venus ; wave propagation
英文摘要: The planet Venus is covered by thick clouds of sulfuric acid that move westwards because the entire upper atmosphere rotates much faster than the planet itself. At the cloud tops, about 65 km in altitude, small-scale features are predominantly carried by the background wind at speeds of approximately 100 m s â '1. In contrast, planetary-scale atmospheric features have been observed to move slightly faster or slower than the background wind, a phenomenon that has been interpreted to reflect the propagation of planetary-scale waves. Here we report the detection of an interhemispheric bow-shaped structure stretching 10,000 km across at the cloud-top level of Venus in middle infrared and ultraviolet images from the Japanese orbiter Akatsuki. Over several days of observation, the bow-shaped structure remained relatively fixed in position above the highland on the slowly rotating surface, despite the background atmospheric super rotation. We suggest that the bow-shaped structure is the result of an atmospheric gravity wave generated in the lower atmosphere by mountain topography that then propagated upwards. Numerical simulations provide preliminary support for this interpretation, but the formation and propagation of a mountain gravity wave remain difficult to reconcile with assumed near-surface conditions on Venus. We suggest that winds in the deep atmosphere may be spatially or temporally more variable than previously thought. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105844
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, Japan; Omori Medical Center, Toho University, 6-11-1 Omorinishi, Ota-ku, Tokyo, Japan; Department of Earth Sciences, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, Japan; Faculty of Environmental Earth Science, Hokkaido University, N10W5, Sapporo, Hokkaido, Japan; Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, Japan; School of Commerce, Senshu University, 2-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa, Japan; Artificial Intelligence Research Center, National Institute of Advanced Industrial Science and Technology, 2-3-26 Aomi, Koto-ku, Tokyo, Japan; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa, Japan; School of Engineering, University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga, Japan; Research and Information Center, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa, Japan; Graduate School of Science, Kobe University, 7-1-48 Minatojima, Minamimachi, Chuo-ku, Kobe, Hyogo, Japan; Space Information Center, Hokkaido Information University, Ebetsu, Hokkaido, Japan; Planetary Exploration Research Center, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba, Japan

Recommended Citation:
Fukuhara T.,Futaguchi M.,Hashimoto G.L.,et al. Large stationary gravity wave in the atmosphere of Venus[J]. Nature Geoscience,2017-01-01,10(2)
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