U.S.-Japan Cooperative Science: Study of 3-D Solar Wind Structure and Dynamics Using Heliospheric Tomography

美日合作科学：利用日光层断层扫描研究 3D 太阳风结构和动力学

• 批准号: 9815377
• 负责人: Bernard Jackson
• 金额: $ 2.8万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-15 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9815377&HistoricalAwards=false
• 关键词: U.S.; Japan; Cooperative; Science; Study

9815377Jackson This award supports a three year collaborative research project between Professor Bernard Jackson of the University of California, San Diego and Professor Masayoshi Kojima of Nagoya University in Japan. The researchers will be undertaking a study of 3-D solar wind structure and dynamics using heliospheric tomography. The solar atmosphere (the solar wind and the structures within it) forms a solar-terrestrial connection extending from the corona to the magnetosphere of Earth. This project involves the analysis of solar remotely sensed data, which provide densities, velocities, and other physical parameters of heliospheric and coronal plasmas. The primary goal will be the three-dimensional reconstruction and presentation of structures that interact with the Earth using tomographic methods. The researchers will then use these observational data to better define and answer questions such as the shape of quiet solar wind structures which pass the Earth, their interaction with the ambient solar wind plasma, and their effects in modifying embedded solar magnetic fields. The densities, velocities and magnetic fields determined in situ at Earth by spacecraft will be used to check the accuracy of the remote sensing techniques. This project brings together the efforts of two laboratories that have complementary expertise and research capabilities. Results of the research will be used to map solar wind structures, determine the extent of their interactions with the Earth and locate their origins on the Sun. The technique can also be used with a large variety of ground and space-based data systems. This research advances international human resources through the participation of graduate students. Through the exchange of ideas and technology, this project will broaden our base of basic knowledge and promote international understanding and cooperation.***

9815377杰克逊这个奖项支持一个为期三年的合作研究项目之间的教授伯纳德杰克逊的加州大学，圣地亚哥和教授小岛正吉的名古屋大学在日本。 研究人员将利用日光层层析成像技术对三维太阳风结构和动力学进行研究。 太阳大气层（太阳风和其中的结构）形成了从日冕延伸到地球磁层的日地联系。 该项目涉及分析太阳遥感数据，提供日光层和日冕等离子体的密度、速度和其他物理参数。 主要目标将是利用层析成像方法对与地球相互作用的结构进行三维重建和展示。 然后，研究人员将利用这些观测数据来更好地定义和回答一些问题，例如经过地球的安静太阳风结构的形状，它们与周围太阳风等离子体的相互作用，以及它们在修改嵌入式太阳磁场中的作用。 将利用航天器在地球现场确定的密度、速度和磁场来检查遥感技术的准确性。 该项目汇集了两个具有互补专业知识和研究能力的实验室的努力。研究结果将用于绘制太阳风结构图，确定其与地球相互作用的程度，并确定其在太阳上的起源。 该技术还可用于各种各样的地面和空间数据系统。 本研究通过研究生的参与促进国际人力资源。 通过交流思想和技术，该项目将扩大我们的基本知识基础，促进国际理解与合作。