Slide1 l.jpg
This presentation is the property of its rightful owner.
Sponsored Links
1 / 51

200 PowerPoint PPT Presentation


  • 75 Views
  • Uploaded on
  • Presentation posted in: General

Rip Current Statistics. Principal Reasons People Die In A Rip Current. Rip Current Formation. Types of Rip Currents. Rip Currents Safety. 100. 100. 100. 100. 100. 200. 200. 200. 200. 200. 300. 300. 300. 300. 300. 400. 400. 400. 400. 400. 500. 500. 500. 500.

Download Presentation

200

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Rip Current

Statistics

Principal Reasons

People Die In

A Rip Current

Rip Current

Formation

Types of

Rip Currents

Rip Currents

Safety

100

100

100

100

100

200

200

200

200

200

300

300

300

300

300

400

400

400

400

400

500

500

500

500

500


Rip Current Statistics

T/F - Around 100 people die in rip currents each year U.S.


True


Rip Current Statistics

T/F -Most victims are in the ocean waters of:

a. Florida

b. California

c. Carolinas

d. All of the above


D. All of the above


Rip Current Statistics

T/F - Rip currents also kill people in the Great Lakes.


True


Rip Currents Statistics

T/ F The chance of drowning at a beach protected by lifeguards affiliated with USLA is 1 in 18 million.


True


Rip Currents

T/F More people die in rip currents than the deaths from hurricanes, lightning, flooding, and tornadoes.


True


Rip Current Formation

Deceiving, it looks like a nice calm area:


An area of deeper water where waves don’t break


Rip Current Formation

What is correct sequence of rip current formation?

  • Wave travels to the beach, waves break on sandbars, water runs off beach through a channel.

    B. Waves break on sandbars, wave travels to the beach, water runs off beach through a channel.

    C. Water runs off beach through a channel, wave travels to the beach, waves break on sandbars.

    D. None of the above.


B. Waves break on sandbars, wave travels to the beach, water runs off beach through a channel.


Rip Current Formation

The longer the period between waves:

a. The longer the waves.

b. The faster the waves move.

c. The more momentum the waves carry.

d. A and B

e. A,B, and C


E. a, b, and c


Rip Current Formation

__________ is proportional to amplitude or height squared


Wave energy


Rip Current Formation

When do rip currents become dangerous?

a. During high surf conditions as the wave height and wave period increase.

b. During low surf conditions as the wave height and wave period decrease.

c.During high surf conditions as the wave height and wave period decrease.

d. During low surf conditions as the wave height and wave period increase.


a. During high surf conditions as the wave height and wave period increase.


Types of Rip Currents

  • This type of rip current is short in duration (less than 10 minutes)

    • Enhanced by large swells with more wave energy and volume.

    • Unpredictable temporary conditions and variable locations.


What is a Flash Rip Current?


Types of Rip Currents

  • This type of rip current develops along jetties, piers, and groins.


What is a Permanent rip current?


Types of Rip Currents

  • This type of rip current is dependent upon shape of coast, bays, points, reefs or sand bars.


What is a Fixed rip current?


Types of Rip Currents

  • This type of rip current occurs with long shore (parallel to beach) current

  • Occurs with long shore (parallel to beach)current

  • Pushes rip away from original location and weakens it.


What is a Traveling rip current?


Types of Rip Currents

A long shore current may push swimmer into:

  • Flash rip current

  • Permanent rip current

  • Fixed rip current

  • All of the above


D. All of the above


Rip Currents Safety

T/F Rip currents do not pull people under the water—they pull people away from the shore.


True


Rip Currents Safety

T/F Undertow and riptides are the same as rip currents.


False


Rip Currents Safety

T/F Rip currents only occur on beaches near the ocean.


False, they also occur in the Great Lakes.


Rip Currents Safety

T/F Rip Currents can be very narrow or more than 50 yards wide.


True


Rip Currents Safety

T/F Rip currents do not affect strong swimmers/Olympic swimmers.


False


Principal reasons people die in a rip current

T/F Poor swimmers


True


Principal reasons people die in a rip current

T/F Unaware of hazardous conditions


True(always check www.ripcurrents.noaa.gov before going to the beach or Great Lakes area)


Principal reasons people die in a rip current

T/F Intoxicated


True


Principle reasons people die in a rip current

T/F No flotation device


True


Principal reasons people die in a rip current

T/F Panic and swim directly toward shore against the rip current, become exhausted and drown


True


  • Login