Bathymetric (or sea floor terrain) data is often collected from boats using sonar to take measurements of the sea floor. The lines reflect the path of the boat as it gathers the data.
水深(或海底地形)的数据往往是在船只上使用声纳测量海底采集的。
2
The sea level which been rising since direct measurements began in 1870 at a rate that is now five times faster than it was at the beginning of recorded measurements.
1870年起，人们开始测量海平面上升的速度，现在的速度是那时的5倍。
3
The 10 indicators of climate change include measurements of sea level rise taken from ships, the temperature of the upper atmosphere taken from weather balloons and field surveys of melting glaciers.