Collaborative Research: SHINE: Study of Long-Term Variability of Solar Chromospheric Activity in Multiple Solar Cycles

合作研究：SHINE：多个太阳周期中太阳色层活动的长期变化研究

• 批准号: 1620647
• 负责人: Debi Prasad Choudhary
• 金额: $ 11.88万
• 依托单位: The University Corporation, Northridge
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-06-15 至 2023-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1620647&HistoricalAwards=false
• 关键词: Collaborative; Research; SHINE; Study; Long

This 3-year SHINE project is aimed at building a multi-decadal database of H-alpha images using various sources and studying the long-term variation in the database to understand the cyclic behavior of the solar activity. The three project teams will study the statistical properties of filaments, track differential rotation and meridional flows, and investigate the chirality-hemispheric helicity relation, which is essential for understanding the long-term variation of magnetic fields, interior flows and helicity. The project has a strong education component since all three PI institutions have very active programs in education and outreach; the NJIT and CSUN have highly diverse environment, with many minority students. This SHINE project is multidisciplinary in nature since it requires expertise in computer science, engineering, statistics, and physics. The project will promote strong international collaborations for the benefit of advancing space weather research both in the USA and worldwide. The research plan of this 3-year SHINE project includes three main tasks. The first task is to study the long-term variation of the statistical properties of filaments that carries important information about the magnetic signature of the solar cycles. The project team will focus the research on the statistical and cycle dependent properties of filaments, in particular polar crown filaments that are related to the interface between the new and the old solar cycles. The second main task is to track plasma flows using features from H-alpha images as proxy for the magnetic features. The most important components include the differential rotation and meridional flows. Both are closely related to the dynamo signature of solar cycles. Since the SOHO and SDO data are limited to solar cycles 23 and 24, which may be atypical in respect to low level of activity, to accomplish this task the project team will utilize their own data, which spans over 9 solar cycles of both high and low amplitudes. The third task is to investigate the distribution of filament chirality and their cycle variations, which reflect the global structure of helicity. The project is directly relevant to the NSF's SHINE program, because it will provide important knowledge about the long-term variation of the global solar activity, which is the major source of high-energy disturbances in the solar, heliospheric, and interplanetary environment. Such knowledge is critical for accurate modeling and prediction of space weather conditions from the solar surface to the Earth and beyond. The research and EPO agenda of this project supports the Strategic Goals of the AGS Division in discovery, learning, diversity, and interdisciplinary research.

这个为期三年的光泽项目旨在使用各种来源构建H-Alpha图像的多年数据库，并研究数据库中的长期变化，以了解太阳能活动的循环行为。 这三个项目团队将研究细丝的统计特性，跟踪差异旋转和子午流，并研究手性左右的螺旋关系，这对于理解磁场，内部流和螺旋性的长期变化至关重要。 该项目具有强大的教育部分，因为这三个PI机构在教育和宣传方面都具有非常活跃的计划。 NJIT和CSUN拥有许多少数族裔学生的环境。 这个Shine项目本质上是多学科的，因为它需要计算机科学，工程，统计和物理学方面的专业知识。该项目将促进强大的国际合作，以便在美国和全球范围内推进太空天气研究。 这个为期三年的Shine项目的研究计划包括三个主要任务。 第一个任务是研究细丝的统计特性的长期变化，这些统计特性带有有关太阳能循环的磁性特征的重要信息。 项目团队将研究将研究重点放在细丝的统计和依赖性特性上，特别是与新太阳能周期和旧太阳能之间的接口相关的极性冠状丝。 第二个主要任务是使用H-Alpha图像中的特征跟踪等离子流，作为磁功能的代理。 最重要的组件包括差分旋转和子午流。 两者都与太阳循环的发电机特征密切相关。 由于SOHO和SDO数据仅限于太阳能周期23和24，这对于低水平的活动水平可能是非典型的，因此为完成这项任务，项目团队将利用自己的数据，该数据涵盖了9个高振幅和低振幅的太阳能周期。 第三个任务是研究丝质手性的分布及其周期变化，这些变化反映了全球螺旋性的结构。 该项目与NSF的Shine计划直接相关，因为它将提供有关全球太阳能活动的长期差异的重要知识，这是太阳，地球际和行星际环境中高能量干扰的主要来源。 这种知识对于从太阳能表面到地球及以后的太空天气条件进行准确的建模和预测至关重要。 该项目的研究和EPO议程支持AGS部门在发现，学习，多样性和跨学科研究方面的战略目标。