30日，两个天灾接踵而来：海啸把萨摩亚整个社区夷为平地；黎克特制7.6级的大地震则祸及苏门答腊岛。
On the30th , two disasters hit : a massive tsunami flattened entire communities in Samoa , and a7.6 magnitude earthquake struck Sumatra .
黎克特制