Aeromagnetic Data of Portola, California, and Surrounding Areas

This data release provides access to an aeromagnetic survey over a part of northern California, an area that includes the cities of Portola, California, and Reno, Nevada. The survey extends across the northern part of the Sierra Nevada from Honey Lake in the north to Lake Tahoe in the south and over parts of the Sierra Nevada foothills. These data were acquired between March 3 and May 3, 2021, by EDCON-PRJ, Inc., working under contract to the U.S. Geological Survey. The nominal flying height was based on a best fit, pre-planned, three-dimensional draped surface targeted at 305 m above terrain, subject to aircraft climb and descent limitations. Steep terrain in parts of the survey area required significant departures locally from the [...]

本数据集发布提供了加利福尼亚州北部部分区域的航空磁测（aeromagnetic survey）数据，该区域涵盖加利福尼亚州波特罗拉（Portola）与内华达州里诺（Reno）两座城市。本次测区横跨内华达山脉（Sierra Nevada）北部，北起哈尼湖（Honey Lake），南至太浩湖（Lake Tahoe），并覆盖内华达山脉山麓部分区域。该批数据由EDCON-PRJ, Inc. 于2021年3月3日至5月3日期间采集，作业方受美国地质调查局（U.S. Geological Survey）委托开展本次航测工作。标称飞行高度以预先规划的最优拟合三维贴地航面为基准，设定为距地表305米，同时受限于航空器的爬升与下降性能限制。测区部分区域地形陡峭，需在局部区域大幅偏离预设[...]