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Cartography - Map Style - Map Visualization
Curated by Jérémie Ory
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Rescooped by Jérémie Ory from Geography Education
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Aerial Photographs Catalogue the Life and Death of Volcanic Islands

Aerial Photographs Catalogue the Life and Death of Volcanic Islands | Map@Print | Scoop.it

Volcanic islands can seem to appear out of nowhere, emerging from the ocean like breaching monsters of the deep. Below, Mika McKinnon explains how these odd geological formations are born, how they evolve, and how they eventually vanish back beneath the waves.


Via Seth Dixon
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Matthew Richmond's curator insight, December 2, 2015 3:30 PM

Re-scooped from Professor Dixon, pretty cool story on the formation of islands in the south Pacific. A couple of them look like the island visible from the beach in Rincon, Puerto Rico where I stayed. The island is one giant rock so nobody lives there and it's a naval base for the U.S. military. This, however, is a different situation when you realize that not only do people live here, but kind of a lot of people live here.

Matt Ramsdell's curator insight, December 14, 2015 9:00 PM

What causes the death and the caldera in a volcano? One thing that happens in a deceased volcano is the center of the volcano starts to either erode or the inside finally caves in. Once this happen a caldera takes shape and the ocean starts to take over. As the waves eat away at the shores it will eventually create a island that is shaped like a "U". After this happens that island will someday retreat back into the ocean and someday form a barrier reef.

Adam Deneault's curator insight, December 14, 2015 10:52 PM

Based on general knowledge, I know that the taller a volcano is, the younger it is and the shorter it is, the older it is. The reason they start to get short is from erosion. Hot spots in the Earth's crust make small islands from molten rock. Young islands can be very dangerous, because if they are inhabited, they have the possibility of erupting, whereas an old island does not since the volcano is lnactice and eroding. Over time the inactive volcano will crumble and a caldera will take shape and after even more time, that caldera will slip under the ocean and become a reef. 

Rescooped by Jérémie Ory from Geography Education
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Boston's unnatural shoreline

Boston's unnatural shoreline | Map@Print | Scoop.it
Today's 100-year storm surge could be tomorrow's high tide.

Via Seth Dixon
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Seth Dixon's curator insight, February 5, 2013 3:05 PM

This set of maps and articles help to explain why sea level rise is such an issue for many major metropolitan areas.  In coastal cities with substantial economic development, much of the current coastal areas where once underwater until landfill projects filled in the bay.  During storm surges (or if and when sea levels rise) these will be the first places to flood.  


Tags: disasters, water, physical, Boston, weather and climate.

Charlotte Hoarau's curator insight, February 6, 2013 5:57 AM

Surging sea represented on an imagery background layer.

Color ramp should be graduated.

James Hobson's curator insight, September 10, 2014 3:18 PM

Here's somehing to "Swett" over for those who live along the coast:

"Coastal cities are now living in what Brian Swett calls a “post-Sandy environment.” In this new reality, there is no more denying the specter of sea-level rise or punting on plans to prepare for it. And there is no more need to talk of climate change in abstract predictions and science-speak. We now know exactly what it could look like."

Keep in mind that as globalization expands, urbanizaion does as well, putting more and more people at this type of risk.