Predicted seabed sand content in the north-northwest region of the Australian continental EEZ 2013

This dataset provides the spatially continuous data of predicted seabed sand content (sediment fraction 63 - 2000 µm) expressed as a weight percentage ranging from 0 to 100%, presented in 0.0025 decimal degree (dd) resolution raster grids format and an ascii text file. The dataset covers the north-northwest region of the Australian continental EEZ. This dataset supersedes previous predictions of seabed sand content for the region 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 areas. This dataset is intended for use at regional scale. 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砂含量预测数据，对应沉积物粒级为63~2000微米，以0~100%的重量百分比表征，采用0.0025十进制度（decimal degree, dd）分辨率的栅格数据集格式与ASCII文本文件存储。本数据集覆盖澳大利亚大陆专属经济区（Exclusive Economic Zone, EEZ）的北西北海域，取代了该区域此前的海底砂含量预测成果，且经证实精度有所提升。预测精度随基础数据密度与海底复杂程度的变化而存在差异；由于相关区域采样不足，本数据集存在数据伪影现象。本数据集适用于区域尺度的应用，在采样密度不足以识别沉积物属性局地变化的区域，本数据集不适用于局地尺度的应用。若需在上述区域获得最精准的沉积物分布解译结果，建议补充采集样品并更新空间插值方法。