'Rip currents' diaporamas de présentation

Shores and Coastal Processes

Shores and Coastal Processes. Shores and Coastal Processes. Shorelines are places where bodies of water meet dry land Coasts are landward of ocean shorelines Beach: a narrow strip of land, washed by waves or tides . Ordinary Waves are caused by WIND

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Fig. 12.18

Fig. 12.18. Chapter 9 Coasts, Estuaries and Environmental Issues. Fig. 12.5. Primary Coast: Delaware Bay & Chesapeake Bay. Fig. 12.4. Primary Coast: Milford Sound Fjord, New Zealand. Box Fig. 2, pg. 323. Primary Coast: Mississippi River Delta. Fig. 12.6. Primary Coast:

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Waves, Beaches and Coastal Erosion

Waves, Beaches and Coastal Erosion. 1. Tidal forces associated with Moon. Tidal forces associated with Sun and Moon. High tide stays aligned with moon but Earth rotates, yielding 2 high and 2 low tides each day. Tidal forces associated with Sun and Moon.

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Coasts

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Monitoring and Predictions of Rip Currents on So California Beaches

Monitoring and Predictions of Rip Currents on So California Beaches. Drs. C-S Wu and Stephan B. Smith NOAA National Weather Service Office of Science and Technology Meteorological Development Laboratory. Thanks to: Jason Taylor, Mike Churma, and John Schattel (MDL)

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Chapter 12

Chapter 12. Coasts. Chapter Outline. 12.1: Coasts are shaped by marine and terrestrial processes 12.2: Erosion Coasts and Processes 12.3: Depositional Coasts and Beaches 12.4: Large Scale Features of Depositional Coasts 12.5: Biological Activity and Coasts 12.6: Estuaries.

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Coastal Process

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Ocean Waves

Ocean Waves. Surface waves are caused by prevailing winds. Deep Ocean Currents are based almost entirely on density. Waves are defined by four things. Wave height Amplitude Wavelength Crest Trough.

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Coastlines

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Beach Safety

Beach Safety. Grade 5. Lesson 1. Learning Goal 3 Understand basic surf safety and signage. Lifeguards Top Tips. Lifeguards top ten tips http://beachsafe.org.au/surf-ed/lifeguards-top-tips. Flags and Signs.

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Waves and Coastal Interactions

Waves and Coastal Interactions. Stan Piotrowski. What is a wave?. Types of Waves. Type of wave produced is dependent on the type of swell, wind direction, slope of sea bed, and bathymetric features (canyons, ridges) Groundswell- far off coast Wind swell- formed from local winds (choppy)

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Sociological Factors Impacting Beach Attendance

Sociological Factors Impacting Beach Attendance. Applications to Beach Hazards Risk Communication. Megan Dodson Beach Hazards Program Manager National Weather Service Marquette, MI. How does the NWS inform the Public About The Various Beach Hazards?.

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BRONZE MEDALLION PUA21012 Certificate II in Public Safety (Aquatic Rescue)

BRONZE MEDALLION PUA21012 Certificate II in Public Safety (Aquatic Rescue). SURF AWARENESS & SKILLS Chapter 2. ver 5.1 May 2013. Learning Outcomes. Types and formation of waves Rip currents, inshore holes and drift currents Identify beach types and safe swimming locations

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Hurricane Irene Threat Assessment for northeast South Carolina and southeast North Carolina

Hurricane Irene Threat Assessment for northeast South Carolina and southeast North Carolina. Prepared at: 7 PM EDT Aug 25, 2011. Steven Pfaff, WCM Steven.Pfaff@noaa.gov NWS Wilmington, NC. National Weather Service Wilmington, NC . New Information.

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Ocean Waves

Ocean Waves. 6 th Grade. Ocean Waves. http://oceanexplorer.noaa.gov/edu/learning/9_ocean_waves/ocean_waves.html#slide. What is a GOOD wave definition: . Wave : the movement of energy through a body of water Usually begins with WIND . The SIZE of waves depend on what? .

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AQUATICS UNIT

AQUATICS UNIT. BEACH and POOL SAFETY. Wear Sunscreen!!. Why wear sun screen?

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Waves and Tides

Waves and Tides. Waves. Movement of energy through body of water Most form when wind blows across waters surface Waves. Wave characteristics. Wave Action. Starts in open ocean, why? What affects the size of the wave? Strength of wind Duration of wind Distance wind blows Wave Motion

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What makes rip currents? Waves break over a shallow sandbar and push water towards the beach.

What makes rip currents? Waves break over a shallow sandbar and push water towards the beach. That water has to get back out to sea. How do you spot a rip current? Deeper, darker water Fewer breaking waves Sandy discoloured beyond the surf zone. How does water flow in a rip?

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