14A_1 – Slide 1

Topic 14A:

Cabrillo ASA

Online Lecture:

Cabrillo ASA

14A_1 – Slide 2 Cabrillo Beach Area

Photographs above: copyright (C) 2002-2006 Kenneth & Gabrielle Adelman,

California Coastal Records Project, www.Californiacoastline.org

14A_1 – Slide 3 Wetlands: High Tide & Low Tide

A

B

14A_1 – Slide 4 Life in Wetlands

USGS

14A_1 – Slide 5 Destruction of Wetlands, Benefits of Wetlands

NOAA

Development

“Nurseries”

“Filtering”

14A_1 – Slide 6 Where are the waves larger?

Outside the Harbor

Inside the Harbor

14A_1 – Slide 7 The Breakwater

Breakwater

Groin

Waves tend to push sand off toward deep water

14A_1 – Slide 8 Wave Refraction

14A_1 – Slide 9 Life on a Sandy Beach

14A_1 – Slide 10 The Sandy Beach & the Groin

Photographs above: copyright (C) 2002-2006 Kenneth & Gabrielle Adelman,

California Coastal Records Project, www.Californiacoastline.org

Beach

Gro

in

Sand

14A_1 – Slide 11 Sediments from Cliff Erosion

Part 2 will address

the “Marine Life

Refuge” question.

14A_1 – Slide 12 Storm Drains & Beach Closures

14A_1 – Slide 13

Preventing

Cliff

Erosion

Pipes

Tarps

Nets

14A_1 – Slide 14 Cliff Erosion I

14A_1 – Slide 15 Waves & the Spanish Wall

14A_1 – Slide 16 Cliff Erosion II

14A_1 – Slide 17

Sediments on

a Rocky Beach

14A_1 – Slide 18 Tides I

14A_1 – Slide 19 Tides II

sediments near cliff

sediments near water

14A_1 – Slide 20 Layers in the Cliffs I

14A_1 – Slide 21 Layers in the Cliffs II

Layers

Coastal

Cliffs

FaultUplift

Rivers

and Runoff

Layers