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  • You might have heard them referred to asundertoworrip tides,” but these ocean phenomena

  • are actually rip currents.

  • Rip currents are narrow currents in the surf zone that move quickly away from shore.

  • A typical rip current ranges from 50-100 feet wide, and can extend 100 yards or more offshore.

  • It can reach speeds of over 5 miles per hour - that’s faster than an Olympic swimmer!

  • That makes them dangerous and potentially deadly, and scientists want to learn more

  • about them so we can better forecast when and where they will form - and keep beachgoers safe.

  • Here’s what we know:

  • Waves don’t have to be huge for a rip current to form - two or three feet are all it takes.

  • And the weather doesn’t have to be bad for a rip current to emerge. They often occur

  • in the nice days after a storm.

  • Theyre usually strongest near low tide, but can form at any time.

  • Rip currents often form where sand bars are near the shore. They occur at breaks or channels

  • in the bar.

  • Theyre often difficult to see, but you can spot them in areas where waves aren’t

  • breaking, or where there’s foam, seaweed, or discolored water being pulled offshore.

  • It’s easier to see a rip current from higher up - such as from the beach access over dunes

  • or a lifeguard’s tower.

  • Rip currents are a hazard for beachgoers, but by knowing the dangers and what to look

  • for, you can avoid being caught in the grip of the rip.

You might have heard them referred to asundertoworrip tides,” but these ocean phenomena

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B1 中級

リップ現在の科学 (Rip Current Science)

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    fiona51 に公開 2021 年 01 月 14 日
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