IMSA - Very High Resolution Seafloor Classification and Satellite Derived Bathymetry of Swanbourne, Australia

Mapping of benthic habitat and bathymetry, derived from satellite imagery captured on 03 June 2017 at a spatial resolution of 2 m.

Mapping extent covered as much of the Defence gazetted waters as possible, to a depth of approximately 18 m based on water clarity. Recently dead or senesced (e.g. winter dieback of leaves) and mobile seagrass have the same satellite signature as live seagrass at spectral resolutions of the sensor (WorldView-2). This ensured areas of winter dieback and/or senescence were captured as areas of seagrass for the purposes of impact assessment.

本数据集为基于2017年6月3日采集的卫星影像生成的底栖生境（benthic habitat）与海底地形（bathymetry）制图，空间分辨率为2米。本次制图覆盖范围尽可能涵盖国防部门公报划定的管辖水域，依据水体透明度条件，制图水深上限约为18米。由于在该传感器（WorldView-2）的光谱分辨率条件下，新近死亡或衰亡（例如海草叶片冬季枯萎）的海草以及活动海草，均与活体海草具有一致的卫星光谱特征，因此在开展影响评估时，冬季枯萎和/或海草衰亡区域会被归类为海草分布区域。