NASA researchers detect tsunamis by their rumble in the atmosphere NASA
), but are impractical to apply in real time. However, this does not introduce additional complexities on GUARDIAN’s detection scheme because the filtering process removes any unestimated biases from the TEC time series.
We note that a fixed single-shell model might not be exact in all possible conditions due to the fact that the ionosphere is a highly dynamic environment. A different shell height would not significantly displace the IPPs, but may have a slight impact on the determination of the celerity and direction of propagation for TIDs . However, introducing shell models varying in time and/or space would adversely impact the consistency of our products in time and space.