Research and Economic Development, Office of


Date of this Version

Spring 4-11-2022

Document Type



Fernández, A., Filina, I., 2022, Comparing Satellite vs Marine Potential Fields Data Over the Bathymetrists Seamounts, University of Nebraska-Lincoln Student Research Days Posters


Copyright © 2022 Alexa Fernández, Irina Filina


The Bathymetrists Seamounts (BSM) are located north of the Sierra Leone Rise (SLR) in the mid-Atlantic Ocean. The seamounts reside on oceanic crust that is 105 to 45 million years old. However, dredging over the Bathymetrists Seamounts dated rocks at ~40 Myr. The general trend of the seamounts contradicts the eastward motion of the African tectonic plate. The origin and tectonic history of the Bathymetrists Seamounts remains debated in literature. Potential fields (gravity and magnetic) data can provide important insight into the formation and evolution of the seamounts. The purpose of this study is to compare available gravity and magnetic data acquired by two different methods, satellite and marine.

Satellite gravity and magnetic data over the Bathymetrists Seamounts and Sierra Leone Rise are publicly available for analysis. However, this data has a relatively low resolution. In contrast, recently acquired marine data from the University of Hamburg-Germany is higher resolution, but limited to a number of 2-D profiles. Comparing satellite and marine data revealed that each provide advantages and disadvantages for geological analysis. Marine data is useful for 2-D modeling, while satellite data is better for spatial analysis. Combining both data sets will be beneficial for investigating the origin and history of the Bathymetrists Seamounts.