Bathymetry Study of the Kick-‘em-Jenny Volcano

Kick-’em-Jenny is a submarine volcano located near Grenada in the Lesser Antilles.

kickemjenny

 

In 1939, a major eruption sent volcanic material up to 300 meters into the air, signaling the potential growth of a new island. Seismometers have recorded further activity approximately once a decade, but these events are rarely observed directly. Scientists therefore understand little about what is happening at the volcano that is approximately 190 meters below the sea surface.

In a new study in Geochemistry, Geophysics, Geosystems, a journal of the American Geophysical Union, scientists conducted bathymetric surveys of the volcano in 2016 and 2017. They combined this with four previous surveys of the volcano, made between 1985 and 2014, covering a number of these periods of unrest. This movie shows two of those surveys: a 2017 survey performed by the R.R.S. James Cook, which shows a close-up view of the cone of Kick-‘em-Jenny and a 3D rendering of the gas released during that survey; and a regional 2013 survey collected by the R/V Nautilus.

Not to be confused with the  Nautilus Institute

Rather than a growing cone, the study’s authors observed several small landslides from the flanks of Kick-’em-Jenny. In recent decades, far more material has fallen away from the cone than has been added in eruptions, with some parts of the volcano growing and collapsing with regularity. This type of behavior is also seen in the handful of other studied underwater volcanoes worldwide, suggesting it is a common process. In the next stage of the project, the study’s authors try to further decode the seismic signals in the light of these volcanic processes to aid future monitoring of the volcano.

Read the full study at: http://onlinelibrary.wiley.com/doi/10…

Video Animation by: IVS Fledermaus

Video Produced by AGU

AGU video
Music by: departures by airtone (c) copyright 2015 Licensed under a Creative Commons Attribution Noncommercial (3.0) license. http://dig.ccmixter.org/files/airtone… Ft: speck
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