Content-Length: 34579 | pFad | http://oceantoday.noaa.gov/ripcurrentscience/
NARRATOR:
You might have heard them referred to as “undertow” or “rip 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.
They’re 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.
They’re 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.
NARRADOR:
El agua parece estar lista para entrar a nadar, pero puede haber un peligro esperando a los que lo hacen.
Esta fuerza potencialmente mortal es la amenaza número 1 de seguridad en las playas, se llama corriente de resaca.
Las corrientes de resaca son canales rápidos y potentes de agua que fluyen de la playa y hacia más allá de la rompiente de las olas. Y antes de que se dé cuenta, puede ser arrastrado lejos de la costa.
Pueden ser realmente difíciles de detectar, por lo tanto tenga cuidado si ve lo siguiente: un canal de agua agitada y revuelta; un área con una notable diferencia de color; una línea de espuma, de algas o basura en movimiento constante hacia el mar, y / o una ruptura en el movimiento de las olas. Si queda atrapado en una:
Si no puede escapar de ella:
Si ve a alguien atrapado en una,
El mar puede ser una fuente de diversión y emociones, pero siempre se debe tener cuidado de los peligros que en él existen. Sólo acuda a las playas resguardadas con personal salvavidas. Antes de su próximo viaje a la playa, aprenda cómo reconocer una corriente de resaca y la forma de salir de ella si es necesario.
Fetched URL: http://oceantoday.noaa.gov/ripcurrentscience/
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