ask a geologist: barrier islandsabout me ashlyn spector born and raised in florida graduate student...
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![Page 1: Ask a Geologist: Barrier IslandsAbout Me Ashlyn Spector Born and raised in Florida Graduate student studying paleoceanography/science communication My favorite dinosaur is: Ask A Geologist](https://reader033.vdocuments.us/reader033/viewer/2022052023/603890192090310a4b3b2bd4/html5/thumbnails/1.jpg)
By: Ashlyn Spector
Barrier IslandsAsk a Geologist:
![Page 2: Ask a Geologist: Barrier IslandsAbout Me Ashlyn Spector Born and raised in Florida Graduate student studying paleoceanography/science communication My favorite dinosaur is: Ask A Geologist](https://reader033.vdocuments.us/reader033/viewer/2022052023/603890192090310a4b3b2bd4/html5/thumbnails/2.jpg)
About Me
Ashlyn Spector● Born and raised in Florida● Graduate student studying
paleoceanography/science communication
● My favorite dinosaur is:
Ask A Geologist Series
![Page 3: Ask a Geologist: Barrier IslandsAbout Me Ashlyn Spector Born and raised in Florida Graduate student studying paleoceanography/science communication My favorite dinosaur is: Ask A Geologist](https://reader033.vdocuments.us/reader033/viewer/2022052023/603890192090310a4b3b2bd4/html5/thumbnails/3.jpg)
About Me
Ashlyn Spector● Born and raised in Florida● Graduate student studying
paleoceanography/science communication
● My favorite dinosaur is:
Ask A Geologist Series
![Page 4: Ask a Geologist: Barrier IslandsAbout Me Ashlyn Spector Born and raised in Florida Graduate student studying paleoceanography/science communication My favorite dinosaur is: Ask A Geologist](https://reader033.vdocuments.us/reader033/viewer/2022052023/603890192090310a4b3b2bd4/html5/thumbnails/4.jpg)
What are barrier islands?
A long island made of sand that runs parallel to the mainland shore and is separated from the main shore by a lagoon
Ask A Geologist Series
![Page 5: Ask a Geologist: Barrier IslandsAbout Me Ashlyn Spector Born and raised in Florida Graduate student studying paleoceanography/science communication My favorite dinosaur is: Ask A Geologist](https://reader033.vdocuments.us/reader033/viewer/2022052023/603890192090310a4b3b2bd4/html5/thumbnails/5.jpg)
What are barrier islands?
Ask A Geologist Series
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Ask A Geologist Series
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Ask A Geologist Series
Cross-section
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Ask A Geologist Series
Beach
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Ask A Geologist Series
Dunes
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Ask A Geologist Series
Maritime Forests
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Ask A Geologist Series
Marshes
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Ask A Geologist Series
Types of Barrier Islands
Micro tidal <2 m tidal rangeMeso tidal 2-4 m tidal range
● Wave Dominated coasts○ Long and skinny
islands with few inlets
● Mixed Energy coasts○ ‘Drumstick’ shape
and lots of inlets
What is New Jersey?
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Ask A Geologist Series
Types of Barrier Islands
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Ask A Geologist Series
Types of Barrier Islands
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Ask A Geologist Series
How Do Barrier Islands
Form?
Offshore Bar Theory
Submergence Theory
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How Do They Change?● Sea level rise and fall● Sediment movement
○ Longshore Drift○ Storms
● Human influence
Ask A Geologist Series
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How Do They Change?
Ask A Geologist Series
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Ask A Geologist Series
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Ask A Geologist Series
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Ask A Geologist Series
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In The Field
Ask A Geologist Series
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Why Do We Care?
● Sea level rise and storm history preserved in the geologic and ecologic record
Ask A Geologist Series
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Why Do We Care?
● Humans live on them!● ~1.4 million people in U.S.
Atlantic and Gulf● Economically, socially, and
culturally importance
Ask A Geologist Series
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Why Do We Care?
● Protect 10% of coastlines globally
● Dunes, mangroves, and salt marshes protect from storms
● Marshes and mangroves store a lot of carbon
Ask A Geologist Series
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Question Time!