第五次空间天气学研讨会暨中国科学院空间天气学研讨会（2004年9月19～25日，武夷山）

第五次空间天气学研讨会暨“中国科学院空间天气学研讨会”，也是第一次国际日地系统气候和天气计划空间天气主题研讨会(The First Chinese Space Weather／CAWSES Symposium)，由国家自然科学基金委员会地球科学部和中国科学院主办，中国科学院空间科学与应用研究中心具体组织、承办．出席会议的人数为161人，其中院士7人．     

第五次空间天气学研讨会暨中国科学院空间天气学研讨会

(2 0 0 4年 9月 1 9～ 2 5日 ,武夷山 )第五次空间天气学研讨会暨“中国科学院空间天气学研讨会” ,也是第一次国际日地系统气候和天气计划空间天气主题研讨会 (TheFirstChineseSpaceWeather/CAWSESSymposium) ,由国家自然科学基金委员会地球科学部和中国科学院主办 ,中国科学院空间科学与应用研究中心具体组织、承办 .出席会议的人数为 16 1人 ,其中院士 7人 .会议由中国科学院空间科学与应用研究中心魏奉思研究员和国家自然科学基金委员会地球科学部地球物理和空间物理学科主任于晟博士共同主持 ,各单元的学术报告由刘振兴院士和中国…     

第二次全国空间天气学研讨会

第二次全国空间天气学研讨会于1998年8月7日至13日在黄山举行,这次会议是由国家自然科学基金委地球科学部、信息产业部22所和中国科学院空间科学与应用研究中心"日球物理数值研究开放实验室"联合主办,来自总参气象局、总参通信部、航天部、信息产业部、高校、地震局、海洋局和中国科学院等部门所属20余个单位80余位代表参加了会议．国家科技部基础司邵立勤副司长到会作重要讲话,他指出,空间天气学是一门跨世纪的新学科,从现在起应予重视,好好策划．空间天气是指太阳表面、太阳风、磁层、电离层和热层中影响空间、地面技术系统的运行和…     

开展空间天气业务对广东社会经济的影响

通过对空间天气和空间天气学的描述,介绍空间天气学的研究内容、方法、监测手段以及空间天气灾害的危害;分析了在广东开展空间天气业务的必要性,并对如何开展广东空间天气业务提出建议。     

2004年全球灾害地震的灾情综述

根据美国地质调查局国家信息中心的互联网数据，2004年1月1日～12月31日，全球共发生M≥6地震156次。其中M≥7地震16次，M≥8的地震2次。M≥9的地震1次。M≥6的地震与最近10年(1990～2000年)期间的年平均数153次相近。比近100年来(1900～1999年)的年平均数126次高。     

日冕物质抛射—空间天气的扰动源

日冕物质抛射是引起空间天气扰动的重要起因＿本文对日冕物质抛射的一般参量和形态、它与其它太阳活动现象的关系、它在行星际空间的表现以及它导致的地球空间环境扰动的研究进展作了介绍和讨论     

中国的空间环境研究

主要介绍我国的空间环境研究及其进展，包括空间环境探测，特别是利用卫星探测；空间环境资料和模式的收集与研究；空间环境与航天器的相互作用及其对航天器的影响；以及空间环境预报等．     

中国的空间环境研究与空间环境预报

本文主要介绍我国在空间环境研究与空间环境预报方面的进展, 包括空间环境资料和模式的收集、研究与应用; 空间环境与航天器的相互作用及其对航天器的影响; 以及空间环境预报方法和预报技术等的进展     

我国空间物理研究进展

经过多年的建设与努力,我国日地空间物理与空间天气领域的研究呈现蓬勃的发展态势.《地球物理学报》以空间物理为专辑,集中在2014年11期刊发38篇文章,涵盖了基于"子午工程"观测数据分析在内的空间物理和空间天气方面的一批最新研究成果.这些工作涉及电离层、中高层大气、地磁与磁层、太阳及太阳风等学科方向,还有两篇工作涉及行星空间环境.本文将从这五个学科方向简要地介绍收入专辑的这些工作.     

空间域位置相关法道间插值

为了消除地震资料空间采样不够造成的空间假频现象,在ｃｌａｅｒｂｏｕｔ空间２－Ｄ预测误差滤波器的启示下,本文提出了空间域位置相关法道内插值,在地面实际资料处理中都取得了良好的效果。     

Summary of Global Earthquake Disasters in 2018

According to global seismic hazards data in 2018, the paper summarizes major hazards data of the global earthquakes, describes the major seismic hazards, and analyzes the characteristics of disasters losses of hazard earthquakes in this year. Focusing on the disaster and the cause of the September 28, 2018, Indonesia earthquake, and listing the major earthquakes triggered the tsunami disasters in history. Finally, giving suggestions and measures to deal with the earthquake disasters effectively.     

Ionospheric index of solar activity based on the data of measurements of the spacecraft signals characteristics

The method for estimating an ionospheric index of solar-activity (IISA) based on the processing of spacecraft radio signals is suggested. The IISA values have been obtained by comparison between the measured and calculated variations of radio-signal characteristics. To calculate the variations of radio-signal characteristics, the straight rays approximation and the solar-activity index (Wolf numbers W and/or values of F_10.7 solar flux) as a control parameter of the ionospheric model have been used. The suggested method was tested using spacecraft radio signals from the radio-navigation system “CIKADA”. The reduced differences of phases (ΔΦ) for frequencies 150 and 400 MHz were measured and the same characteristics were calculated by integration along the ray of radio-wave propagation between the receiver and the satellite. The IRI-95 has been used as a background ionospheric model. The satellite co-ordinates were determined using the orbit parameters recorded in the navigation messages. Minimization of the difference measured and calculated ΔΦ using arbitrary time steps, or during whole time intervals of observation, gives the IISA corresponding the satellite pass. Daily IISA values were obtained by averaging over all communication contacts during a day (20–30 passes). Testing this approach based on the measurements during March/April 1997, 1998, shows that on magnetically quiet days differences between IISA and the primary solar activity indices are about 5%.     

Fundamentals about the flow of geomagnetically induced currents in a power system applicable to estimating space weather risks and designing remedies

Geomagnetically induced currents (GIC) in technological systems, like electric power transmission grids, at the Earth's surface are caused by space weather processes, whose origin is in the Sun. In power systems, transformers may be saturated due to GIC leading to different problems extending from an increase of harmonics to a blackout of the system and damage of transformers. To design reasonable measures against impending problems, GIC magnitudes in the network should be estimated in different circumstances. This paper tackles basic features of GIC flow in a fictitious five-transformer/four-line power system, which is simple enough to make the equations easily manageable but complex enough to yield real and usable information. It is shown that the direction of the geoelectric field affects GIC at different sites but the dependence is not straightforward since GIC produced in one part of the system flows to others. Generally, transmission lines experience much larger GIC than transformers. Series capacitors in transmission lines prevent the flow of dc-like GIC but, without a careful analysis, their installation may result in larger GIC at some transformers of the system thus increasing the risk of problems.