Casey Station GIS Dataset update from various sources

The Australian Antarctic Data Centre's Casey Station GIS data were originally mapped from Aerial photography (January 4 1994). Refer to the metadata record 'Casey Station GIS Dataset'. Since then various features have been added to these data as structures have been removed, moved or established. Some of these features have been surveyed. These surveys have metadata records from which the report describing the survey can be downloaded. However, the locations of other features have been obtained from a variety of sources. The data are included in the data available for download from the provided URLs. The data conforms to the SCAR Feature Catalogue which includes data quality information. See the provided URL. Data described by this metadata record has Dataset_id = 17. Data quality information for each feature is included within the dataset.

澳大利亚南极数据中心（Australian Antarctic Data Centre）的凯西站地理信息系统（Geographic Information System, GIS）数据最初基于1994年1月4日的航空摄影完成制图。请参阅元数据记录「凯西站GIS数据集（Casey Station GIS Dataset）」。
此后，随着相关设施被拆除、迁移或新建，各类地物要素陆续被补充至该数据集内，其中部分地物要素已完成外业勘测。此类勘测均配有专属元数据记录，通过该记录可下载描述勘测详情的正式报告。但其余部分地物要素的位置信息则源自多种不同渠道。
该数据集已纳入本次提供的下载链接可获取的数据范畴之中。本数据集符合南极研究科学委员会（Scientific Committee on Antarctic Research, SCAR）地物目录（SCAR Feature Catalogue）的规范，该目录涵盖数据质量相关信息，请参阅本次提供的链接。
本元数据记录所描述的数据集，其数据集编号（Dataset_id）为17。数据集内已包含各地物要素的完整数据质量信息。