Marine Geoscience Data System
HD-YLAKE Magnetic:Anomaly, Magnetic:Field, Navigation:Primary
Lake surface track line navigation and magnetic anomaly data for the HD-YLAKE project, Yellowstone Lake, 2016
This data set consists of track line navigation and magnetic field measurements collected on Yellowstone Lake in September 2016. The magnetic sensor was an Overhauser scalar magnetometer (Marine Magnetics Explorer sensor) towed at ~15 m behind the USGS boat Alamar with navigation recorded using a GlobalSat USB GPS receiver with a precision of a few meters. The magnetic data was collected at the lake level, at a mean elevation value of 2358 meters above sea level. The data files are in ASCII format with the following columns: longitude, latitude, x (m), y(m), date(YYYY/MM/DD), utc_time(HH:MM:SS), raw magnetic field intensity (nT), magnetic anomaly (nT). The magnetic anomaly was computed after correcting for diurnal variations and removing the regional IGRF [Thebault et al., 2015]. Diurnal corrections were applied utilizing the Newport (NEW) and Boulder (BOU) geomagnetic observatory records. 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, U.S Geological Survey Mineral Resource and Volcano Hazard Programs, and benefited from major in-kind support from the U.S. Geological Survey Yellowstone Volcano Observatory. The lake surface and AUV magnetic data sets were acquired under National Park Service research permit YELL-2016-SCI-7018. Maurice Tivey was supported under NSF IPA grant 1557455 to WHOI. During the course of this study, C. Bouligand was a visiting scientist at the U.S. Geological Survey in Menlo Park, California, USA and benefited from a delegation to Centre National de la Recherche Scientifique (CNRS) and received funding from CNRS-INSU program SYSTER.
Device Info
Device Info
Alamar (Boat)
The data have been processed/modified to a level beyond that of basic quality control (e.g. final processed sonar data, photo-mosaics).

Data Files



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