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Visible spirals associated with postnoon UV ’bright spots’ aurora

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Visible spirals associated with postnoon UV ’bright spots’...

第十一届全国日地空间物理学术讨论会

作者： George Parks Matt Fillingim natsuo sato Makoto Taguchi Tohru Araki Asgeir Brekke Syun-Ichi Akasofu Space Science Laboratory University of California Berkeley Space Science Laboratory University of California Berkeley National Institute of Polar Research Tokyo 173-8515 Japan National Institute of Polar Research Tokyo 173-8515 Japan Kyoto University Kyoto 606-8502 Japan Faculty of Science University of Tromoso Norway International Arctic Research Center Fairbanks USA

＜正＞’Bright spots’ is an auroral feature well observed on postnoon auroral oval by satellite UV imageries. Because of strong atmospheric absorption on UV emissions, however, UV ’bright spots’ cannot be directly observed on the ground. All sky images obtained at Zhongshan in the Antarctic have been used to study the conjugate visible features of ’bright spots’ aurora in Polar UV images covering the northern oval. Two case studies shown for the first time that bright spots in satellite UVI might be associated with spirals along a bright arc aurora in all sky images. Ground observation on aurora spirals with high temporal and spatial resolution camera allowed us to clarify that bright spots might be of the scale of 10-100 km and last for less than 1 minute. Investigation with all-sky images indicates that UV bright spots might display same rotation sense as aurora spirals do, namely, counter-clockwise in magnetic field direction.

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南极中山站极光形态的统计特征

极地研究 1999年第1期11卷 8-18页

作者：胡红桥刘瑞源王敬芳杨惠根 KAZUO MAKITA 王幸 natsuo sato 武汉大学中国极地研究所 TAKUSHOKU UNIVERSITY National INSTRITUREOF POLAR RESNRCH

利用极光全天空摄象机１９９５年和１９９７年在南极中山站观测的极光数据，对中山站上空极光的出现情况进行了统计分析。在南极中山站，午后（磁地方时１４００～１８００ＭＬＴ）和子夜前后（２２００～０３００ＭＬＴ）出现极光的情... 详细信息

利用极光全天空摄象机１９９５年和１９９７年在南极中山站观测的极光数据，对中山站上空极光的出现情况进行了统计分析。在南极中山站，午后（磁地方时１４００～１８００ＭＬＴ）和子夜前后（２２００～０３００ＭＬＴ）出现极光的情况比较多，在傍晚（１８００～２２００ＭＬＴ）出现极光的情况要少一些；较强的极光主要也出现在午后和子夜附近。冕状极光主要出现在子夜附近和午后的极向侧和天顶，在傍晚出现很少；带状极光主要出现在午后和赤道侧的傍晚与子夜；极光浪涌主要出现在子夜前后；向日极光弧则主要出现在子夜前后，子夜前比子夜后多，极向和天顶比赤道侧多。除向日极光弧外，其它形态的极光在中山站的出现情况与Ｋｐ指数相关。中山站进入极光带的时间通常在午后。

关键词：极光极光带 Kp指数中山站南极

The extremely intense CNA events observed at Zhongshan Station in July, 2000

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Chinese Journal of Polar Science 2002年第1期13卷 7-14页

作者：胡红桥刘瑞源刘勇华刘顺林杨惠根徐中华 natsuo sato Hisao Yamagishi Polar Research Institute of China Shanghai 200129 China National Institute of Polar Research Tokyo 173-8515 Japan

Using the ground observation data at Zhongshan Station of Antarctica during July 13 to 17, 2000, the intense absorption events associated with the activities of the solar active region R9077 are analyzed. It was shown that an intense polar cap absorption event lasted more than 3 days, which was caused by the solar proton event associated with the X5/3B major flare at 1024 UT on July 13. The polar cap event started at about 1040 UT on July 14, and lasted to about 1940 UT on July 17, with a typical day night variation. At the same time, the intense solar activities extremely disturbed the magnetosphere, therefore aurora substorms occurred frequently. The energetic particle precipitation from the magnetosphere caused several absorption spikes superposing on the background of polar cap absorption. One distinct event is the absorption enhancement that started at about 0300 UT on July 15, reached its peak of 26 dB at about 0645 UT and recovered at about 1110 UT on the same day, which was the strongest absorption event observed at Zhongshan Station since the imaging riometer installed in February, 1997. Another outstanding absorption spike with pulsation occurred at about 1753 UT on 14th, its peak reached to 6 dB.

关键词： polar ionosphere cosmic noise absorption polar cap absorption solar activity Zhongshan Station Antarctica.

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南极中山站午后极光强度与太阳风参数的关系

极地研究 2001年第3期13卷 151-158页

作者：胡红桥刘瑞源杨惠根王敬芳 natsuo sato Masayu kiKikuchi 李升贵中国极地研究所上海200129 武汉大学光电信息学院武汉430072 National Institute of Polar Research

本文利用 1 997年和 1 998年南极中山站多通道扫描光度计的地面观测数据和 WIND卫星在弓激波上游对太阳风参数的观测数据 ,对午后高纬极光强度与太阳风等离子体密度、动压以及太阳风速度之间的相关性进行了定量研究。研究表明 ,午后极光... 详细信息

本文利用 1 997年和 1 998年南极中山站多通道扫描光度计的地面观测数据和 WIND卫星在弓激波上游对太阳风参数的观测数据 ,对午后高纬极光强度与太阳风等离子体密度、动压以及太阳风速度之间的相关性进行了定量研究。研究表明 ,午后极光 6 3 0 .0 nm的强度与太阳风等离子体参数之间有较好的相关 ,6 3 0 .0 nm的强度表现出随太阳风等离子体密度、动压和速度的增大而增加的趋势 ,其相关系数分别为 0 .84、0 .88和 0 .6 1 ;而 5 5 7.7nm极光的强度与太阳风等离子体参数之间的相关较差。午后 5 5 7.7nm和 6 3 0 .0 nm对太阳风参数的不同响应表明太阳风对 6 3 0 .0 nm影响更直接 ,而 5 5 7.

关键词：中山站午后极光极光强度太阳风参数磁层动力学南极

An integrated analysis platform merging SuperDARN data within the THEMIS tool developed by ERG-Science Center (ERG-SC)

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Advances in Polar Science 2013年第1期24卷 69-77页

作者： Tomoaki Hori Nozomu Nishitani Yoshizumi Miyoshi Yukinaga Miyashita Kanako Seki Tomonori Segawa Keisuke Hosokawa Akira S Yukimatu Yoshimasa Tanaka natsuo sato Manabu Kunitake Tsutomu Nagatsuma Solar-Terrestrial Environment Laboratory Nagoya University Furou-cho The University of Electro-Communications National Institute of Polar Research National Institute of Information and Communications Technology

The Energization and Radiation in Geospace （ERG） mission seeks to explore the dynamics of the radiation belts in the Earth＇s inner magnetosphere with a space-borne probe （ERG satellite） in coordination with related ground observations and simulations/modeling studies. For this mission, the Science Center of the ERG project （ERG-SC） will provide a useful data analysis platform based on the THEMIS Data Analysis software Suite （TDAS）, which has been widely used by researchers in many conjunction studies of the Time History of Events and Macroscale Interactions during Substorms （THEMIS） spacecraft and ground data. To import SuperDARN data to this highly useful platform, ERG-SC, in close collaboration with SuperDARN groups, developed the Common Data Format （CDF） design suitable for fitacf data and has prepared an open database of SuperDARN data archived in CDE ERG-SC has also been developing programs written in Interactive Data Language （IDL） to load fltacf CDF files and to generate various kinds of plots-not only range-time-intensity-type plots but also two-dimensional map plots that can be superposed with other data, such as all-sky images of THEMIS-GBO and orbital footprints of various satellites. The CDF-TDAS scheme developed by ERG-SC will make it easier for researchers who are not familiar with SuperDARN data to access and analyze SuperDARN data and thereby facilitate collaborative studies with satellite data, such as the inner magnetosphere data pro- vided by the ERG （Japan）-RBSP （USA）-THEMIS （USA） fleet.

关键词： ERG Science Center SuperDARN database data analysis software TItEMIS Common Data Format

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南极中山站极光发生率及其形态特征

南极中山站极光发生率及其形态特征

Expansively Hemorrhagic Foreign Body Granuloma at the Pelvis Caused by Microscopic Materials

第五届中外空间/太空科学讨论会

作者：胡红桥刘瑞源杨惠根王敬芳 Kazuo Makita natsuo sato 中国极地研究所中国极地研究所中国极地研究所武汉大学 Takushoku University Tokyo 193 National Institute of Polar Research Tokyo 173-8515

＜正＞我国南极中山站的地理坐标为（69°22′24″S,76°22′40″E）,地磁（偶极）坐标为（77.2°S,120.5°E）,不变磁纬约为75°S,L=13.9,MLT=UT+2h,LT=UT+5h,该站是开展午后极光及高纬极光观测研究的少数理想台站之一.自1995年以来,...

＜正＞我国南极中山站的地理坐标为（69°22′24″S,76°22′40″E）,地磁（偶极）坐标为（77.2°S,120.5°E）,不变磁纬约为75°S,L=13.9,MLT=UT+2h,LT=UT+5h,该站是开展午后极光及高纬极光观测研究的少数理想台站之一.自1995年以来,中山站已建设成为具有国际先进水平的日地物理综合观测台站.本文利用极光全天空摄象机1995年和1997年在南极中山站观测的极光数据,对中山站上空极光的出现情况进行了统计分析,得到了中山站极光形态及其发生率随滋地方时和地磁活动变化的一些初步认识.

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Open Journal of Orthopedics 2012年第1期2卷 1-5页

作者： Masatoshi Morimoto Mitsuhiko Takahashi Nori sato Toshihiko Nishisho Seiko Kagawa Eiji Kudo Shoichiro Takao natsuo Yasui Department of Human Pathology Institute of Health Biosciences the University of Tokushima Graduate School Tokushima Japan Department of Orthopaedic Surgery Institute of Health Biosciences the University of Tokushima Graduate School Tokushima Japan Department of Radiology Institute of Health Biosciences the University of Tokushima Graduate School Tokushima Japan.

A foreign body granuloma is a mass lesion consisting of a foreign body with host reaction. Its diagnosis is not always easy in respect of its similarity to soft tissue sarcoma. The most common foreign body is surgical sponge which can be detectable macroscopically. We present a foreign body granuloma in the left buttock caused by microscopic surgical materials that developed into a large lesion. An 80-year-old man with a history of surgery for dislocation of the left hip 20 years earlier, presented with a slowly growing mass that had expanded rapidly over the preceding 2 months. Histological examination revealed organizing granulation tissue surrounding the scattered foreign materials. One should be aware of foreign body granuloma at previously operated sites even without a retained macroscopic gauze sponge.

关键词： Expanding Hematoma Foreign Body Granuloma Histologic Examination Magnetic Resonance Imaging

Analysis of Characteristic of Aurora Substorm Observed at Antarctic Zhongshan Station

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Wuhan University Journal of Natural Sciences 2000年第3期5卷 312-316页

作者： Ai Yong1, Wang Jing-fang1, Liu Rut-yuan2, Yang Hut-gen 2, sato natsuo3 1. College of Electronic information, Wuhan University, Wuhan 4 30072, China 2. Polar Research institute of China, Shanghai 200129, China 3. National Institute of Polar Research, Tokyo, Japan 173 Wuhan University College of Electronic Information Wuhan China (GRID:grid.49470.3e) (ISNI:***) Polar Research Institute of China Shanghai China (GRID:grid.418683.0) (ISNI:***) National Institute of Polar Research Tokyo Japan (GRID:grid.410816.a) (ISNI:***)

The characteristics of a strong aurora substorm observed at Antarctic Zhongshan station (magnetic latitude=74.5°) on 8 April, 1999, were discussed and analyzed. The developing steps of the aurora substorm that happened in dusk time were almost the same with that of midnight aurora substorm. The averaged moving speed of the aurora arc toward pole area during the substorm expansion phase was about 3.0 km/s, westward-traveling surge speed was about 2.0 km/s. The extension from south to north in the substorm can cover 1100 km in distance.

关键词： aurora substorm observation