But for previous major tsunamis, scientists just had measurements that tide gauges recorded near the coast or that surveyors later estimated from water damage on land. 但相对于过去的大海啸，科学家只能得到验潮仪在岸边记录到的测量值，或是勘测员事后依陆地毁坏程度所做的估测值。
A mathematical model of tide zoning correction is proposed.Based on the computational model, a new tidal correction mode using single suppositive grid tide station is designed. 摘要提出了一种顾及潮时差变化的多验潮站多边形潮汐分区改正数学模型，设计了海量多波束数据通用的虚拟单验潮站改正模式。
