Processed AUV magnetic anomaly and corrected vehicle navigation data for the HD-YLAKE project, Yellowstone Lake, 2016

This data set consists of processed track line navigation and magnetic field measurements collected by an autonomous underwater vehicle (AUV) in Yellowstone Lake in July 2016 by Ocean Floor Geophysics Inc. (OFG) (https://www.oceanfloorgeophysics.com/). Diurnal corrections to the magnetic data were applied utilizing the Newport (NEW) and Boulder (BOU) geomagnetic observatory records. The regional IGRF magnetic field [Thebault et al., 2015] was removed to produce the anomaly. Navigation was provided by a deployed acoustic transponder network. Data processing of the navigation data included masking of AUV maneuvers and jumps in the data, correction of a residual heading effect and separation of the data acquired at the 15-m height above lake bed from a 7-m height above lake bed. Details of the processing are explained in Bouligand et al., 2020. The data files are in ASCII format with the following columns: longitude, latitude, UTM x (m), UTM y (m), depth(m), height above lake floor (m), magnetic anomaly (nT). The lake surface and AUV magnetic data sets were acquired under National Park Service research permit YELL-2016-SCI-7018. The data set was generated as part of the Hydrothermal Dynamics of Yellowstone Lake (HD-YLAKE) project and was supported by National Science Foundation grant EAR-1516361.

本数据集包含2016年7月由海底地球物理公司（Ocean Floor Geophysics Inc., OFG）于黄石湖通过自主水下航行器（Autonomous Underwater Vehicle, AUV）采集的经处理航迹线导航数据与磁场测量数据，数据源网址为https://www.oceanfloorgeophysics.com/。针对磁场数据的日变校正，采用纽波特（Newport, NEW）与博尔德（Boulder, BOU）地磁台站的观测记录完成；为生成磁异常数据，已移除区域国际地磁参考场（International Geomagnetic Reference Field, IGRF）[Thebault等，2015]的相关数据。导航数据由部署的声学应答器网络提供，其处理流程包括对AUV机动动作与数据跳变的掩膜处理、残余航向效应校正，以及将湖床上方15米高度与7米高度采集的数据进行分离。详细的数据处理方法见Bouligand等2020年的研究成果。本数据集采用ASCII格式存储，各列依次为：经度、纬度、UTM x坐标（米）、UTM y坐标（米）、水深（米）、湖床上方高度（米）、磁异常（纳特斯拉，nT）。本湖表与AUV磁场数据集的采集工作获得了美国国家公园管理局的研究许可YELL-2016-SCI-7018。本数据集作为黄石湖热液动力学（Hydrothermal Dynamics of Yellowstone Lake, HD-YLAKE）项目的一部分生成，得到了美国国家科学基金会EAR-1516361号项目资助。