The main problem is that near shore, a tsunami's actual size is masked by additional waves generated as the tsunami bounces off seawalls, wraps around islands, or sloshes back and forth in a bay—all of which make for a very tangled signal.
The main problem is that near shore, a tsunami's actual size is masked by additional waves generated as the tsunami bounces off seawalls, wraps around islands, or sloshes back and forth in a bay—all of which make for a very tangled signal.
然而主要问题是当海啸接近岸边时，冲击防波堤产生的巨浪，或是当它包围岛屿、在海湾里来回所飞溅的浪花，都会造成非常紊乱的讯号，掩盖海啸的实际大小。