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Abstract:
Seismic instruments have been recording the motion of the Earth since the end of the 19th century. Along with earthquakes, they also recorded the constant motion of the ground due to ocean wave energy, called microseism. This signal provides a unique opportunity to observe storm systems from continuously recording, fixed point observatories. While sensitivity of microseism to tropical storms and hurricanes has long been known, it is still unclear exactly how particular microseismic parameters respond to different storm characteristics. We show the results of a data-integration of seismic and storm data for the Atlantic between 2010 and 2020 that explores the relationship between the microseism and meaningful storm parameters (e.g., generated swell, maximum windspeed). This result provides a step towards definitively linking characteristics of the microseism to specific storm parameters, as well as insights into atmosphere-ocean and ocean-solid Earth interactions. In turn, such an understanding will eventually help to address pre-satellite era storm catalog biases (e.g., those due to observations coming primarily from ships logs) through long-running historical seismic data.
