Magnetic reduction-to-the-pole (RTP) anomaly map of the Continental United States

The total-field magnetic anomaly of continental US is collected from "Magnetic anomaly maps and data for North America (https://mrdata.usgs.gov/magnetic/)". The magnetic reduction-to-the-pole (RTP) anomaly is obtained using a large-area RTP method based on a sliding-window framework.美国大陆总磁场磁异常（total-field magnetic anomaly）数据集源自《北美磁异常图与数据》（Magnetic anomaly maps and data for North America，https://mrdata.usgs.gov/magnetic/）。磁异常化极（magnetic reduction-to-the-pole，RTP）异常采用基于滑动窗口框架的大区域化极方法计算获得。