DEPRECATED - National Intertidal Digital Elevation Model 25m 1.0.0

This record has been superseded by eCat 149403The National Intertidal Digital Elevation Model (NIDEM) product is a continental-scale elevation dataset for Australia's exposed intertidal zone. NIDEM provides the first three-dimensional representation of Australia's intertidal zone (excluding off-shore Territories and intertidal mangroves) at 25 m spatial resolution, addressing a key gap between the availability of sub-tidal bathymetry and terrestrial elevation data. NIDEM was generated by combining global tidal modelling with a 30-year time series archive of spatially and spectrally calibrated Landsat satellite data managed within the Digital Earth Australia (DEA) platform. NIDEM complements existing intertidal extent products, and provides data to support a new suite of use cases that require a more detailed understanding of the three-dimensional topography of the intertidal zone, such as hydrodynamic modelling, coastal risk management and ecological habitat mapping.

本数据集记录已由eCat 149403号记录替代。国家潮间带数字高程模型（National Intertidal Digital Elevation Model, NIDEM）是面向澳大利亚裸露潮间带的大陆尺度高程数据集。NIDEM首次实现了澳大利亚潮间带（不含海外领地与潮间带红树林）25米空间分辨率的三维表征，填补了亚潮带水深地形数据与陆地高程数据之间的关键数据空白。NIDEM通过将全球潮汐模拟与澳大利亚数字地球（Digital Earth Australia, DEA）平台管理的、经过空间与光谱校准的30年时间序列Landsat卫星数据档案库相结合而生成。NIDEM可对现有潮间带范围产品形成补充，并为一系列需要更精细掌握潮间带三维地形的新应用场景提供数据支撑，例如水动力模拟、海岸风险管理与生态栖息地制图。