ABE AUV near-bottom merged navigation and raw magnetic sensor data, Kane Megamullion area, Mid-Atlantic Ridge (KN180-02, 2004)

This data set consists of raw magnetic field measurements and vehicle corrected navigation for autonomous underwater vehicle (AUV) ABE (Autonomous Benthic Explorer) dives over the Kane Megamullion located on the south side of the Kane transform and west flank of the Mid-Atlantic Ridge. The data were collected in 2004 during research cruise KN180-02 on R/V Knorr. AUV ABE was an experimental vehicle built by engineers at Woods Hole Oceanographic Institution (WHOI) and was eventually operated as part of National Deep Submergence Facility (NDSF) funded by the National Science Foundation (NSF). ABE was lost at sea in 2010. Magnetic data is supplied by a Develco model 3-axis fluxgate sensor mounted inside the hull of AUV ABE. Navigation is primarily by long-baseline (LBL) transponder and Doppler velocity log (DVL) where available. The magnetic data consists of raw magnetic values that have not been corrected (calibrated) for the magnetic effects of the AUV and have not been corrected for the IGRF. The data files are in ASCII format with the following columns: year, month, day, hour, min, sec, longitude(decimal degrees), latitude (decimal degrees), depth (meters), pressure (decibars), heading (degrees), pitch (degrees), roll (degrees), altitude (meters), mag02x (nT), mag02y (nT), mag02z (nT), optical backscatter sensor OBS (volts), redox potential eh (volts), rate of change of redox potential deh/dt (volts/second), oxygen O2 (micromolar), temperature (celsius), conductivity (siemens/meter), sound speed (meters/second), sound velocity profile SVP (meters/second). Where no sensor data are reported it is shown by 0.0. Navigation commenced only on the seafloor and is flagged with "NaN" where no navigation data is available. The data set was collected under grant OCE-0118445 from the US National Science Foundation.