Processed Ocean Bottom Hydrophone (OBH) navigation data from the Great Meteor seamounts, northeast Atlantic Ocean (R/V Meteor, 1990)

The OBH data was acquired along five ~200 km-long profiles during R/V METEOR cruise No. 12/2 in the summer of 1990. Navigation during the cruise was controlled by the Global Positioning System (GPS). R/V Meteor was equipped with a source array of four 19-litre airguns, providing a total volume of 76 litres. Guns were towed at a depth of ~8 m and fired every 2 minutes at a pressure of ~140 bars, providing a dominant source frequency of 6 Hz. The OBH instruments were a prototype supplied by University of Hamburg and used in conjunction with University of Bergen air guns. The continuously-recorded analogue data were digitized at 100 samples per second and stored on Exabyte tapes. The digitised data was reprocessed in 2022/2023 using a predictive deconvolution and a simple Butterworth bandpass filtered from 4 to 15 Hz, and stored in SEG-Y file format. SEG-Y files have been reduced by 8 km/s. Record sections start at t = 0. The "station_and_profile_coordinates.txt" file is in ASCII format and contains three groups of navigation data, as follows. The first group presents the coordinates (lon/lat) of the start and end of five profiles that were shot during Meteor M12-2. The second group gives the coordinates (lon/lat) of the OBHs where reprocessed SEG-Y-formatted data files are available. The final group provides the coordinates (lon/lat) of the OBHs where reprocessed travel-time pick files are available. The data was collected under Deutsche Forschungsgemeinschaft grant We 690/27 1-4.