Tsunami Forerunner 1 : A series of oscillations of the water level preceding the arrival of the main tsunami waves, mainly due to the resonance in bays and shelves that could occur before the arrival of the main tsunami
International Tsunami Information Center (A UNESCO/IOC-NOAA Partnership), Honolulu, HI, USA 2013.http://itic.ioc-unesco.org/index.php?option=c om_content&view=article&id=1868:online-glo ssary-2013328&catid=1142&Itemid=2435, (ND/ Tsunami Emr - Amer) {959}