Bedrock beneath Hebgen Lake warped and rotated, causing a seiche in the lake.
赫布根湖底的基岩发生了翘曲和旋转,引起湖中浪涌。
英语百科
Hebgen Lake
Hebgen Lake is a lake located in Southwest Montana and is created by Hebgen Dam. It is well known for the 1959 Hebgen Lake earthquake (magnitude 7.1 to 7.5) which occurred nearby on August 17, 1959, forming Quake Lake which is located immediately downstream.