Tidal forces also affect land masses though not enough to be noticeable.

潮汐引力对陆地板块也有影响，尽管这种影响并不明显。

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Made up mostly of limestone formed from the skeletal remains of sea creatures, the submerged regions of the tidal flats are carved by channels where water flows between land.

这些群岛主要是由海洋生物残骸形成的石灰岩构成，潮汐滩的水下部分被流动的水分割成河道。

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Buried tidal marsh or coastal forest soils point to sudden land subsidence of about 1 meter occurring at the same time from Vancouver Island to Northern California.

埋在地下的潮汐沼泽及沿海森林土壤使温哥华至加利福尼亚州北部一带的地面沉降1米左右。

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That means, in practice, that they can be deployed only some 50km from land, which is better than tidal gauges, but not ideal.

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"It almost looked like a tidal wave coming across the land, " recalls Rick Gerstel, a resident of Gulfport.

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Ocean hits are worse than land hits, not just because of immense tidal waves, but because of the vast quantities of super-heated water vapor and dust that spread from the impact to shroud the entire Earth.

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