Victorian Coastal Cliff Assessment - Cliff Face Landslip Areas (ASTaR) - Present day - 0.0m SLR

The Victorian Coastal Cliff Assessment - Instability Areas (ASCCIE) is a digital dataset consisting of multiple spatial layer outputs from modelled erosion scenarios. The dataset is recommended for use at the statewide / regional scale along the Victorian coastline. Application of the data should be guided by the accompanying Victorian Coastal Cliff Assessment technical reports and expert advice. The product is not suitable for individual property scale assessments. ASTaR have been derived based on the geological unit type and cliff height. The methodology for defining ASTaR isa new method undertaken at a high level and based on the existing cliff height and a defined slopeto identify the possible seaward extent of talus runout. For this state-wide/regional scale assessment, single values were derived for each component. This ‘building-block’ approach (ie: a combination of individual parameters) is expected to produce ‘upper bound’, conservative results, which identifies areas potentially exposed to coastal erosion, cliff instability and cliff slumping/talusThe product is an update to the Victorian Coastal Cliff Assessment, Stage 1. Included datasets for Stage 2a supersede the Stage 1 outputs. The Stage 2a project report should be read in conjunction with the Stage 1 report. Application of the data should be guided by the accompanying "Victorian Coastal Cliff Assessment, Stage 2a technical report" (Tonkin & Taylor 2025) read in conjunction with the Stage 1 technical report, combined with appropriate expert advice.

《维多利亚海岸悬崖评估——不稳定区域（ASCCIE）》是一套数字化数据集，包含多套基于侵蚀情景模拟生成的空间图层输出成果。本数据集推荐应用于维多利亚海岸线的全州域/区域尺度分析。数据的使用需遵循配套的《维多利亚海岸悬崖评估》技术报告及专家建议。本产品不适用于单个物业尺度的评估工作。
ASTaR（ASTaR）参数基于地质单元类型与悬崖高度推导得出。其定义方法为一种全新的高阶方法：依托现有悬崖高度与设定坡度，识别倒石堆（talus）运移的可能向海延伸范围。针对本次全州域/区域尺度评估，为各组分均推导得到单一数值。
这种"积木式"方法（即多个独立参数的组合）预计将生成"上限保守"的估算结果，可识别出潜在受海岸侵蚀、悬崖失稳及悬崖崩塌/倒石堆流影响的区域。
本产品为《维多利亚海岸悬崖评估》第一阶段的更新版本。第二阶段a项目包含的数据集已完全替代第一阶段的输出成果。第二阶段a项目报告需与第一阶段报告结合研读。数据的使用需遵循配套的《维多利亚海岸悬崖评估 第二阶段a技术报告》（Tonkin & Taylor 2025），并结合第一阶段技术报告与适当的专家建议。