Seabed Mud Content Across the Australian Continental EEZ, 2011

This dataset provides the spatially continuous data of seabed mud content (sediment fraction < 63 µm) expressed as a weight percentage ranging from 0 to 100%, presented in 0.01 decimal degree resolution raster format. The dataset covers the Australian continental EEZ, including seabed surrounding Tasmania. It does not include areas surrounding Macquarie Island, and the Australian Territories of Norfolk Island, Christmas Island, and Cocos (Keeling) Islands or Australia's marine jurisdiction off of the Territory of Heard and McDonald Islands and the Australian Antarctic Territory.This dataset supersedes previous predictions of sediment mud content for the Australian Margin with demonstrated improvements in accuracy. Accuracy of predictions varies based on density of underlying data and level of seabed complexity. Artefacts occur in this dataset as a result of insufficient samples in relevant regions. This dataset is intended for use at national and regional scales. The dataset may not be appropriate for use at local scales in areas where sample density is insufficient to detect local variation in sediment properties. To obtain the most accurate interpretation of sediment distribution in these areas, it is recommended that additional samples be collected and interpolations updated.

本数据集提供空间连续的海底泥沙含量（沉积物粒径<63微米组分，sediment fraction < 63 µm）数据，以重量百分比（取值范围0~100%）表示，采用0.01十进制度分辨率的栅格（raster）格式存储。本数据集覆盖澳大利亚大陆专属经济区（Exclusive Economic Zone, EEZ），包含塔斯马尼亚岛周边的海底区域，但不涵盖麦夸里岛周边海域、诺福克岛、圣诞岛及科科斯（基林）群岛澳大利亚领地的管辖海域，也不包括赫德岛和麦克唐纳群岛领地周边海域以及澳大利亚南极领地的管辖海域。本数据集替代了此前针对澳大利亚大陆边缘的沉积物泥沙含量预测产品，经验证其精度有所提升。预测精度取决于基础数据密度与海底复杂程度。由于相关区域采样不足，本数据集存在数据伪影。本数据集适用于国家及区域尺度的研究应用。若区域采样密度不足以捕捉沉积物属性的局地变化，则本数据集不适用于局地尺度的应用。若需获取此类区域沉积物分布的精准解译结果，建议补充采集样本并更新空间插值算法。