ETOPO1 Global Relief Model

ETOPO1 is a 1 arc-minute global relief model of Earth's surface that integrates land topography and ocean bathymetry. It was built from numerous global and regional data sets, and is available in Ice Surface (top of Antarctic and Greenland ice sheets) and Bedrock (base of the ice sheets) versions. Historic ETOPO2v2 and ETOPO5 global relief grids are deprecated but still available. NGDC has utilized the ETOPO1 Global Relief Model to calculate the volumes of the world's oceans and to derive a hypsographic curve of Earth's surface.

ETOPO1是一款1弧分分辨率的全球地表起伏模型，整合了陆地地形与海洋水深数据。该模型基于海量全球与区域数据集构建，提供冰面（即南极与格陵兰冰盖顶部）和基岩（即冰盖底部）两个版本。历史版本ETOPO2v2与ETOPO5全球起伏网格已被弃用，但仍可获取。美国国家地球物理数据中心（National Geophysical Data Center, NGDC）已利用ETOPO1全球起伏模型计算了全球海洋的总体积，并推导得到了地球地表的高程面积分布曲线（hypsographic curve）。