Intermagnet Reference Data Set (IRDS) 2018 – Definitive Magnetic Observatory Data

Definitive digital values of the Earth's mangetic field recorded during 1991..2018 at INTERMAGNET observatories around the world. Data includes minute, hourly and daily vector values, along with observatory baseline values for quality control. Annual means are also included. All data is included on the single downloadable archive files. This is the 28th annual publication in the series. Some national data institutions may have related DOIs that describe subsets of the data. These DOIs are shown under "Related DOIs to be quoted". Beginning with the publication of the definitive data for 2015, INTERMAGNET stopped publishing individual years of data and started publishing the entire, cumulative definitive data set since INTERMAGNET’s first recorded definitive data in 1991. This data set is known as the "INTERMAGNET Reference Data Set" (IRDS). The IRDS comprises all INTERMAGNET one-minute definitive data since 1991 and is annually updated with a new year and occasional corrections to previous releases. Some national data institutions may have related DOIs that describe subsets of the data. These DOIs are shown under "Related DOIs to be quoted". File names for IRDS data are formatted in the form mag_def.zip. The mag section of the filename describes the year in which the data was recorded. The def section of the filename describes the most recent annual INTERMAGNET publication in which the data was updated. Files where mag = def have had no corrections since their original publication. For example, "mag2015_def2016" indicates that this file is different from the first release "mag2015_def2015". For more information on the data formats used in this publication and the technical standards used to create the data, please refer to the INTERMAGNET Technical Manual.

本数据集收录了1991年至2018年间，全球国际实时地磁观测台网（International Real-time Magnetic Observatory Network，简称INTERMAGNET）各观测台站记录的地球磁场最终审定数字化观测值。数据包含分钟级、小时级与日级矢量观测值，以及用于质量管控的观测台站基线值，同时还提供年平均值。所有数据均打包于单个可下载归档文件中。本数据集为该系列的第28份年度发布成果。
部分国家数据机构可能拥有针对该数据集子集的相关数字对象标识符（Digital Object Identifier，简称DOI），此类标识符可在"引用相关数字对象标识符"栏目下查阅。
自2015年最终审定数据发布起，INTERMAGNET不再单独发布单年度数据，转而发布自1991年首次记录最终审定数据以来的全部累积式最终审定数据集。该数据集即被称为"国际地磁参考数据集（INTERMAGNET Reference Data Set，简称IRDS）"。IRDS包含自1991年以来所有INTERMAGNET的一分钟级最终审定数据，并会按年度进行更新，纳入新一年度的数据，同时偶尔会对过往发布版本进行修正。
部分国家数据机构可能拥有针对该数据集子集的相关数字对象标识符，此类标识符可在"引用相关数字对象标识符"栏目下查阅。IRDS数据的文件名格式为mag_def.zip。文件名中的mag字段代表数据记录的年份，def字段代表此次数据更新所对应的最新年度INTERMAGNET发布版本。当mag与def取值相同时，说明该文件自首次发布以来未进行过任何修正。例如，文件名"mag2015_def2016"代表该文件并非首次发布的"mag2015_def2015"版本。
如需了解本发布所采用的数据格式及数据生成所依据的技术标准详情，请参阅《INTERMAGNET技术手册》。

搜集汇总

背景与挑战

背景概述

该数据集是INTERMAGNET发布的1991年至2018年全球地磁观测站权威数据，包含分钟、小时和日向量值、基线值和年平均值，用于地球磁场监测和质量控制。作为第28次年度累积发布，数据集每年更新并可能修正历史数据，文件命名规则（如mag_def.zip）明确标识数据记录和更新年份，便于数据追溯和引用。