eddy By analogy with a molecule, a "glob" of fluid within the fluid mass that has a certain integrity and life history of its own; the activities of the bulk fluid being the net result of the motion of the eddies.

elapsed time Time between the maximum level arrival time and the arrival time of the first wave.

estimated time of arrival (ETA) estimated time of arrival (ETA) Time of tsunami arrival at some fixed location, as estimated from modeling the speed and refraction of the tsunami waves as they travel from the source. ETA is estimated with very good precision if the bathymetry and source are well known (less than a couple of minutes).

evacuation map evacuation map A drawing or representation that outlines danger zones and designates limits beyond which people must be evacuated to avoid harm from tsunami waves. Inundation and Evacuation Map created for the coastal town of Pucusana, Peru.