Multi-resolution Valley Bottom Flatness (MrVBF)

MrVBF is a topographic index designed to identify areas of deposited material at a range of scales based on the observations that valley bottoms are low and flat relative to their surroundings and that large valley bottoms are flatter than smaller ones. Zero values indicate erosional terrain with values 1 and larger indicating progressively larger areas of deposition. There is some evidence that MrVBF values correlate with depth of deposited material. This collection includes 1 arc-second and 3 arc-second resolution versions of MrVBF. The 3 arc-second resolution product was generated from the 1 arc-second MrVBF product and masked by the 3” water and ocean mask datasets.

搜集汇总

背景与挑战

背景概述

Multi-resolution Valley Bottom Flatness (MrVBF) 是一个地形指数数据集，旨在通过分析坡度和景观位置来识别不同尺度下的沉积区域，包含1弧秒和3弧秒分辨率版本，覆盖澳大利亚部分地区。该数据集基于SRTM数字高程模型生成，值范围从0（侵蚀地形）到9（广泛沉积盆地），用于土壤深度预测和景观管理，是澳大利亚土壤和景观网格项目的重要组成部分。