Marine Geoscience Data System
WT10148 Seismic Reflection/Refraction
Processed multi-channel seismic data (SEG-Y format) for 49.3-75.6 Ma equatorial Atlantic ocean floor acquired in 2015 as part of the TransAtlanticILAB project
These processed MCS files are part of a seismic investigation of the Lithosphere-Asthenosphere Boundary (LAB) for the African plate in the equatorial Atlantic ocean from 49.3-75.6 Ma (investigator Satish Singh). The data is cited in Audhkhasi et al. (2020). This multi-channel seismic data is in SEG-Y format was acquired in individual sequences starting from sequence 1 (eastern most) to sequence 4 (western most) using a 12 km long streamer. These sequences were merged to give a ~400 km continuous flow line from 49.3-75.6 Ma. Processing of the MCS data focused on deeper Earth reflections, particularly the Lithosphere-Asthenosphere Boundary (LAB), and is described in the supplementary figure S1 of Audhkhasi et al. (2020). Final processed data files (SEG-Y format) in two-way time and depth converted using a 1-D velocity (supplementary figure S5) are made available along with their associated images (PNG format). Additionally, the zoom-in of the near surface showing the seafloor and basement interfaces (supplementary figure S2) is also provided. The residual mantle bouguer anomaly (RMBA) along the profile is available in a related data set. This study was carried out from March-April 2015 and is funded by the ERC Advance Grant agreement No. 339442 TransAtlanticILAB.
Device Info
Western Trident
The data have been processed/modified to a level beyond that of basic quality control (e.g. final processed sonar data, photo-mosaics).

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