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Directivity and apparent velocity of the coseismic ionospheric disturbances observed with a dense GPS array
文献类型：期刊论文
| 作者 | Heki, K; Ping, JS |
| 刊名 | EARTH AND PLANETARY SCIENCE LETTERS
 |
| 出版日期 | 2005-08-15 |
| 卷号 | 236期号:3-4页码:845-855 |
| 关键词 | ionospheric disturbance earthquake TEC GPS Japan |
| 英文摘要 | Coseismic disturbances in ionosphere have been observed after recent thrust earthquakes off the Pacific coast of Japan, with a dense Global Positioning System array. Positive pulses in electron content, as large as several times 10(15) electrons/m(2) and as long as 4-5 min, emerge similar to 10 min after earthquakes and propagate horizontally with apparent velocity of similar to 1 km/s, close to the sound velocity at the ionospheric height. They may have been excited by coseismic uplifts of the sea surface initially as upward propagating compressive pulses of atmosphere, which were gradually refracted to propagate horizontally in ionosphere. The propagation has strong north-south asymmetry, and interaction between the movements of charged particles in acoustic waves and geomagnetic fields might have selectively attenuated the northward propagating disturbances. (c) 2005 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geochemistry & Geophysics |
| 研究领域[WOS] | Geochemistry & Geophysics |
| 关键词[WOS] | OKI EARTHQUAKE ; SURFACE-WAVES ; PERTURBATIONS ; JAPAN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000232047200020 |
| 源URL | [http://119.78.226.72/handle/331011/19438]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Hokkaido Univ, Div Earth & Planetary Sci, Kita Ku, Sapporo, Hokkaido 0600810, Japan 2.Chinese Acad Sci, Shanghai Astron Observat, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Heki, K,Ping, JS. Directivity and apparent velocity of the coseismic ionospheric disturbances observed with a dense GPS array[J]. EARTH AND PLANETARY SCIENCE LETTERS,2005,236(3-4):845-855. |
| APA | Heki, K,&Ping, JS.(2005).Directivity and apparent velocity of the coseismic ionospheric disturbances observed with a dense GPS array.EARTH AND PLANETARY SCIENCE LETTERS,236(3-4),845-855. |
| MLA | Heki, K,et al."Directivity and apparent velocity of the coseismic ionospheric disturbances observed with a dense GPS array".EARTH AND PLANETARY SCIENCE LETTERS 236.3-4(2005):845-855. |
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