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THREE EVENTS OF OUTBURST OF COMET HALE-BOPP

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紫金山天文台台刊 1998年第2期 67-69页

作者： Zhang Chun-sheng(purple mountain observatory, nanjing 2.0008)Sun Shou-sheng Zhang Yan Sun Li-nan(Qingdao Station of purple mountain observatory, Qingdao 266003)

The results of photographic observations of Comet Hale-Bopp made at Qingdao Station of purple mountain observatory during the period from September to November of 1996 are given. It is shown that three events of outbu... 详细信息

关键词： Comet Hale - Bopp Outburst Jet.

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太阳黑子研究的新进展

天文学进展 1998年第1期16卷 17-25页

作者：叶式中国科学院紫金山天文台

对近年来太阳黑子研究的主要成果和存在的问题作了比较全面的描述，内容涉及观测仪器和技术，黑子的精细结构、磁场、埃弗谢德效应、振荡和磁流体波动、致冷机制、形成与消亡和新发现的早期观测资料，并对今后工作方向提出了概括性的意见。

关键词：太阳黑子研究进展磁场

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第二太阳光谱

天文学进展 1998年第3期16卷 187-194页

作者：叶式辉中国科学院紫金山天文台南京210008

在太阳大气中，共振散射可引起辐射的线偏振．用偏振度测量精度达10－5的仪器，已经探测出完整的偏振辐射谱，这称为第二太阳光谱．它具有大量的、与通常太阳光谱截然不同的特征和结构．已有的研究发现它们与量子力学干涉、同位素效应... 详细信息

在太阳大气中，共振散射可引起辐射的线偏振．用偏振度测量精度达10－5的仪器，已经探测出完整的偏振辐射谱，这称为第二太阳光谱．它具有大量的、与通常太阳光谱截然不同的特征和结构．已有的研究发现它们与量子力学干涉、同位素效应、分子散射等物理过程有关．利用第二太阳光谱，可以进一步开展太阳物理的多项研究．

关键词：偏振太阳光谱太阳物理

太阳质子辐射和软X射线耀斑与射电爆发间的相关研究

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天文学报 1999年第2期40卷 149-155页

作者：周树荣中国科学院紫金山天文台

统计分析了太阳质子事件与微波爆发和软Ｘ射线（ＳＸＲ）耀斑间的关系．结果表明：质子事件的峰值流量与微波爆发和ＳＸＲ耀斑的峰值流量、能通量间呈正的对数线性相关，相关系数０．７—０．８．根据这一统计结果和观测的微波爆发、Ｓ... 详细信息

统计分析了太阳质子事件与微波爆发和软Ｘ射线（ＳＸＲ）耀斑间的关系．结果表明：质子事件的峰值流量与微波爆发和ＳＸＲ耀斑的峰值流量、能通量间呈正的对数线性相关，相关系数０．７—０．８．根据这一统计结果和观测的微波爆发、ＳＸＲ耀斑的有关物理量，可以估算伴随的质子事件峰值流量．太阳质子辐射、ＳＸＲ耀斑和微波爆发三者间的共生关系，可以用磁环中耀斑产生的磁流体动力学过程来解释．大约３３％的质子事件没有对应的Ⅱ型爆发，这表明高能质子的加速有随机ＭＨＤ湍流加速（有Ⅱ型暴）和低频快磁声波湍动加速（无Ⅱ型暴。

关键词：太阳射电爆发质子辐射软X射线耀斑耀斑

CO observations of massive star forming regions at different evolutionary phases

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Science china(Physics,Mechanics & Astronomy) 2006年第5期49卷 626-640页

作者： CHEN Xi1,2, XU Ye1,3, SHEN Zhiqiang1,3 & LI Jingjing1,2 1. Shanghai Astronomical observatory, chinese academy of sciences, Shanghai 200030, china 2. Graduate School of the chinese academy of sciences, Beijing 100034, china 3. Joint Institute for Galaxy and Cosmology, Shanghai Astronomical observatory and the University of Science and Technology of china, Shanghai 200030, china Shanghai Astronomical observatory Chinese Academy of Sciences Shanghai China Graduate School of the chinese academy of sciences Beijing China Joint Institute for Galaxy and Cosmology Shanghai Astronomical Observatory and the University of Science and Technology of China Shanghai China

The 12CO (J=1-0), 13CO (J=1-0) and C18O (J=1-0) emissions in 9 massive star forming regions, which are believed to be at different stages of massive star formation, were mapped with the 13.7 m millimeter wave telescope at Qinghai Station of purple mountain observatory. Of the observed 9 sources, 13CO cores were detected in seven of them, and C18O cores in five of them. And only two sources associated with C18O cores and H2O masers showed the extended structures and strong outflows. This is the first detection of outflow associated with IRAS 22566+5828 in the observing field of S152/S153. The physical parameters of cores and outflows for these sources, derived from Local Thermal Equilibrium (LTE) analysis, are presented. These observing results suggest that the C18O cores will only appear when the gas density is high enough and the probability to have an outflow is very high when the clumps show the C18O and H2O maser simulta- neously.

关键词： star formation cloud core outflow H2O maser

Changes in overland flow and sediment during simulated rainfall events on cropland in hilly areas of the Sichuan Basin,china

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Progress in Natural Science:Materials International 2009年第11期19卷 1613-1618页

作者： Bin Fu,Yukuan Wang~*,Pei Xu,Daojie Wang Key Laboratory of mountain Hazards and Earth Surface Process,Institute of mountain Hazards and Environment, The chinese academy of sciences,Chengdu 610041,china Key Laboratory of mountain Hazards and Earth Surface Process Institute of Mountain Hazards and Environment The Chinese Academy of Sciences Chengdu 610041 China

Water and soil loss are the major causes of the land degradation in the hilly area of the Sichuan Basin,china,where purple soil(FAO, Calcaric Regosols) is widely *** research has been conducted on changes in overland flow and sediment during rain events on sloping cropland in this *** this study,45 artificial rainfall events were applied to five runoff plots with slopes of 9%,18%,27%, 36%,and 47%,*** showed that erosion processes on purple soil of sloping cropland are complex,because the sediment concentration changes with time under different *** to correlations between runoff discharge and sediment concentration, all erosion events were classified into three types:(1) positive correlation;(2) negative correlation;and(3) no *** correlations were dominant,accounting for 60%of all *** intensity,slope gradient,and tillage treatment were the main factors that influenced erosion events.

关键词： Discharge-sediment concentration relationships Water erosion Artificial rainfall Hilly area of the Sichuan Basin purple soil

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用SAVQ技术实现太阳射电频谱的数据压缩

天文学报 1998年第3期39卷 324-332页

作者：丁祖高中国科学院紫金山天文台南京210008

对自适应矢量量化（SAVQ）技术在太阳射电频谱数据压缩中的应用进行了有意义的讨论．给出一种压缩比和失真可调的SAVQ压缩方法，指出提高数据压缩比的有效方法之一为样本集成，同时介绍了用该技术对北京天文台太阳射电频谱仪上的两个波... 详细信息

对自适应矢量量化（SAVQ）技术在太阳射电频谱数据压缩中的应用进行了有意义的讨论．给出一种压缩比和失真可调的SAVQ压缩方法，指出提高数据压缩比的有效方法之一为样本集成，同时介绍了用该技术对北京天文台太阳射电频谱仪上的两个波段（1．0GHz－2．0GHz和2．6GHz－3．8GHz）的观测数据进行压缩的实用效果，并与国际同行所用的ICON方式进行性能比较．最后展示了数据压缩技术及其在天文上的应用．

关键词：自适应矢量量化数据压缩 SAVQ 太阳射电频谱

Validation of three infiltration models on purple soil under simulated rainfall

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Progress in Natural Science:Materials International 2007年第9期17卷 1059-1066页

作者： Wang Yukuan1,2,Fu Bin1,3,Xu Pei1,2,Wang Daojie1,2,Wang Xiantuo1,3 and Wang Yongqiang1,3(1.Key Laboratory of mountain Surface Process and Hazards,chinese academy of Seiences,Chengdu 610041,china 2.Institute of mountain Hazards and Environment,chinese academy of sciences,Chengdu 610041,china 3.Graduate University of the chinese academy of sciences,Beijing 100049,china) Key Laboratory of mountain Surface Process and Hazards Chinese Academy of Sciences Chengdu 610041 China Institute of mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China Graduate University of the chinese academy of sciences Beijing 100049 China

So as to find models suitable for the prediction of water infiltration in purple soil,infiltration rates simulated by three popular empirical infiltration models,Horton model,Kostiakov model,and the modified Kostiakov model,were compared by using those observed results on slope in purple soil under rainfall simulation.28 sets of infiltration data were divided into two parts for parameter estimation and validation *** performance of the three infiltration models was evaluated with the Nash and Sutcliffe efficiency *** results show that the percent for Nash and Sutcliffe efficiency greater than 0.7 is about 69.7% for the Horton model,and 48.48%,and 54.55% for the Kostiakov model and the modified Kostiakov model,*** model is better than Kostiakov model and the modified Kostiakov model in most rain events in the ***,Kostiakov model is still suitable for reasonable prediction of the infiltration in purple soil sloping farmland because fewer parameters are ***,rainfall intensity has significant effects on the parameter values used in the simulation *** simulation results can be improved by choosing suitable parameters according to the rainfall intensity.

关键词： infiltration model sloping farmland purple soil rainfall simulation

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太阳运动Ⅳ型射电爆发的相干辐射模型

天文学报 2004年第2期45卷 168-175页

作者：王德焴中国科学院紫金山天文台

为解释太阳运动Ⅳ型射电爆发的相干辐射机制提出一个理论模型。从耀斑中产生的高能电子,可以被扩展上升的太阳磁流管俘获。在磁流管顶部,这些高能电子的速度分布形成为类束流速度分布,激发束流等离子体的不稳定性,并且主要直接放大O模... 详细信息

为解释太阳运动Ⅳ型射电爆发的相干辐射机制提出一个理论模型。从耀斑中产生的高能电子,可以被扩展上升的太阳磁流管俘获。在磁流管顶部,这些高能电子的速度分布形成为类束流速度分布,激发束流等离子体的不稳定性,并且主要直接放大O模电磁波。不稳定性增长率敏锐地依赖了日冕等离子体参数f_(pe)/f_(ce)和射束温度T_b,这能定性解释在太阳运动Ⅳ型射电爆发中观测到的高亮温度和高偏振度,以及宽频谱的特性。

关键词：太阳运动射电辐射等离子体不稳定性相干辐射机制耀斑