Microseisms, the background signal recorded by seismometers, are sensitive to oceanic waves and the storms that generate them. Characterizing microseisms is a major point of interest since they represent a quantitative data source by which we can seek to understand the effects of global warming, e.g., how the frequency or intensity of storms has changed. The understanding of the extent to which microseisms propagate inland from storms yields crucial information about the feasibility of reconstructing historical storm activity from seismic data. The primary objective of this project is to examine the attenuation of microseisms derived from storms in 2014 across the continental United States. Herein, our study presents preliminary findings from a data integration approach based on Transportable Array (TA) data, Advanced National Seismic System (ANSS) stations, and the HURDAT storm catalog published by NOAA. This research has resulted in identifying the attenuation of microseism activity derived from a wide range of storm intensities. Based on the location of seismic stations, our findings contribute to determining the regions where historical seismograms can contribute to reanalyses of historical storm catalogs. Because existing historical storm data is often incomplete or limited, this research lays the foundation to offering an additional avenue for corroborating storm activity and improving the accuracy of storm databases, thus improving the catalog of past storms and allowing for better documentation of changes in storm behavior.

This work will be presented at the 2023 AGU Meeting in San Francisco, CA as: Characterization of Microseism Attenuation from Storms in the Pacific and Atlantic Oceans