ABS - Regional Internal Migration Estimates (SA3) 2007-2016

This dataset presents the estimates of the internal migration statistics of Australia by Statistical Areas Level 3 (SA3) following the 2011 Australian Statistical Geography Standard (ASGS). The dataset spans from the 2006-07 financial year up to the 2015-16 financial year.\n\nRegional internal migration is the movement of people from one region to another within Australia (both interstate and intrastate). For example, it incorporates moves from a Statistical Area Level 3 (SA3) to any other SA3 within the country. Net regional internal migration is the net gain or loss of population through this movement.\n\nThe ABS has developed a new series of annual regional internal migration estimates (RIME) based on the 2011 edition of the Australian Statistical Geography Standard (ASGS). The Medicare and Defence data used for estimating interstate migration is now also used to estimate internal migration below the state/territory level. However, as Medicare and Defence change of address counts are supplied to the ABS by postcode a method was developed to convert these counts to SA3, the base spatial unit of the ASGS. The method used correspondences to convert to SA3, and adjustments were applied to account for known deficiencies in the Medicare and Defence data. A similar method was used to prepare RIME at the LGA level, based on 2011 boundaries.\n\nThis data is Australian Bureau of Statistics (ABS) data (catalogue number: 3412.0) used with permission from the ABS.\n\nFor more information please visit the [ABS Explanatory Notes](https://www.abs.gov.au/AUSSTATS/abs@.nsf/Lookup/3412.0Explanatory%20Notes12015-16?OpenDocument).\n\nPlease note: RIME are not directly comparable with estimated resident populations (ERPs) because of the different methods and source data used to prepare each series. The combination of natural increase and net migration (internal and overseas) therefore may not correspond with change in ERP. AURIN has spatially enabled the [original data](https://explore.data.abs.gov.au/vis?tm=migration&pg=0&df[ds]=ABS_ABS_TOPICS&df[id]=RIME_REGION&df[ag]=ABS&df[vs]=1.0.0&pd=2007%2C&dq=.SA3..A&ly[cl]=RIM&ly[rw]=ASGS_2011_STATE_GCCSA_SA4_SA3_SA2&ly[rs]=TIME_PERIOD).

本数据集基于2011年澳大利亚统计地理标准（Australian Statistical Geography Standard，ASGS），按三级统计区域（Statistical Areas Level 3，SA3）呈现澳大利亚国内人口迁移统计估算结果。数据集的时间跨度为2006-07财年至2015-16财年。

区域国内人口迁移指澳大利亚境内（含州际与州内）的人口跨区域流动。例如，其涵盖从某一三级统计区域（SA3）迁移至国内任意其他SA3的行为。区域国内净迁移量即指该类流动带来的人口净增减规模。

澳大利亚统计局（Australian Bureau of Statistics，ABS）基于2011版澳大利亚统计地理标准（ASGS），构建了全新的年度区域国内迁移估算（Regional Internal Migration Estimates，RIME）序列。此前用于估算州际迁移的医疗保险（Medicare）与国防数据，如今也被用于估算州/领地以下层级的国内人口迁移。不过，由于向ABS提交的医疗保险与国防地址变更计数均按邮政编码划分，因此开发了一套转换方法，将这些计数转换为ASGS的基础空间单元——SA3。该方法通过匹配对应关系完成转换，并针对医疗保险与国防数据中已知的缺陷进行了调整。基于2011年地理边界，还采用类似方法生成了地方政府区域（Local Government Area，LGA）层级的RIME数据。

本数据集经澳大利亚统计局（ABS）授权使用，其目录编号为3412.0。

如需了解更多信息，请访问[澳大利亚统计局说明文档](https://www.abs.gov.au/AUSSTATS/abs@.nsf/Lookup/3412.0Explanatory%20Notes12015-16?OpenDocument)。

请注意：由于RIME与常住人口估算（Estimated Resident Populations，ERPs）采用了不同的编制方法与源数据，二者无法直接进行比较。因此，自然增长与净迁移（含国内与海外）的总和，未必与ERP的变化量相符。AURIN（澳大利亚城市与区域信息网络，Australian Urban and Regional Information Network）已将[原始数据集](https://explore.data.abs.gov.au/vis?tm=migration&pg=0&df[ds]=ABS_ABS_TOPICS&df[id]=RIME_REGION&df[ag]=ABS&df[vs]=1.0.0&pd=2007%2C&dq=.SA3..A&ly[cl]=RIM&ly[rw]=ASGS_2011_STATE_GCCSA_SA4_SA3_SA2&ly[rs]=TIME_PERIOD)进行空间化适配。