Morphology and dynamics of daytime mid-latitude sporadic-E patches revealed by GPS total electron content observations in Japan

被引：52
|
作者：
Maeda, Jun [1 ,2 ]
Heki, Kosuke [1 ]
机构：
[1] Hokkaido Univ, Dept Nat Hist Sci, Kita Ku, Sapporo, Hokkaido 0600810, Japan
[2] Hokkaido Univ Lib, Kita Ku, Sapporo, Hokkaido 0600808, Japan
来源：
EARTH PLANETS AND SPACE | 2015年 / 67卷
关键词：
Sporadic-E; Ionosphere; GPS-TEC; Morphology; Wind shear; Atmospheric tide; QUASI-PERIODIC ECHOES; E-LAYERS; MU-RADAR; LOWER THERMOSPHERE; RADIO OCCULTATION; E IRREGULARITIES; REGION; INSTABILITY; WINDS; SCINTILLATIONS;
D O I：
10.1186/s40623-015-0257-4
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Morphological characteristics of daytime mid-latitude sporadic-E (Es) patches are studied by two-dimensional total electron content (TEC) maps drawn using the Japanese dense network of Global Positioning System (GPS) receivers. By analyzing over 70 cases, we found that their horizontal shapes are characterized by frontal structure typically elongated in east-west by similar to 100 km. They are observed to migrate mainly northward in the morning and southward in the afternoon with speeds of 30-100 m/s. This may reflect the velocities of neutral winds controlled by the atmospheric tides. Such frontal structures are often found to include smaller scale structures.
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页数：9
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