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First photographs emerge of new Pacific island off Tonga

First photographs emerge of new Pacific island off Tonga | Haak's APHG | Scoop.it

The first photographs have emerged of a newly formed volcanic island in the Pacific Ocean after three men climbed to the peak of the land mass off the coast of Tonga. Experts believe a volcano exploded underwater and then expanded until an island formed. The island is expected to erode back into the ocean in a matter of months.


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Lora Tortolani's curator insight, May 4, 10:52 PM

A mile long volcanic island has formed in the Pacific Ocean that is now safe enough to walk on.  The island started growing a month ago and it is thought that an underwater explosion happened in order to form this island.  The island won't have a name until scientists figure out how long the island will survive.  It is pretty amazing that land masses form from out of nowhere and allow us the chance to study them and learn more about the Earth.

Louis Mazza's curator insight, May 6, 10:17 AM

A new one mile island of the coast of Tonga in Oceania west coast of Australia. A volcano exploded underwater, turning lava in rock and pushing through the surface of the ocean to expose a new island. Three men have scaled the peak of the mountain to date. The men say the surface was still hot and the green lake in the crater smelt strongly of sulfur.

                This is great example of geography constantly undergoing changes and new looks and features. Officials say that this island will be eroded away within the next month so they will not even name it I wonder how many islands like this has happened to, or if inhabitants went to live there then the next day there home is underwater. This is another great example of plate tectonic and active under sea forces that we do not see with our eyes, and what most people do not think of on a daily basis, but is working on a daily basis, constantly changing geography and our world. 

Felix Ramos Jr.'s curator insight, May 7, 9:34 PM

I just find this fascinating.  History is excellent to study but so is the watching history in the making.  This volcanic island formation off the coast of Tonga is a modern day phenomenon which will one day be history.  Some people predict it will erode back into the water but some others think it will be able to last longer.  Either way stuff like this is pretty cool to watch and study while it is happening before your very own eyes.

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The Science of Earthquakes

The Science of Earthquakes | Haak's APHG | Scoop.it
From fault types to the Ring of Fire to hydraulic fracking, the Earthquakes infographic by Weather Underground helps us understand the complexities of what shakes the ground.

 

Tags: disasters, geomorphology, physical, infographic.


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Mr. Twining's curator insight, November 25, 2014 3:58 PM

Infographic for teaching about the science behind earthquakes.

Lorraine Chaffer's curator insight, June 1, 2:14 AM

Australian Curriculum

The causes, impacts and responses to a geomorphological hazard (ACHGK053)


GeoWorld 8

Chapter 4: Hazards: causes, impacts and responses

(4.5 - 4.6 Earthquakes)

Ness Crouch's curator insight, July 6, 10:05 PM

Excellent infographic for showing Earthquakes :)

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Earth's Green Places Mapped

"Although 75% of the planet is a relatively unchanging ocean of blue, the remaining 25% of Earth's surface is a dynamic green. Data from the NASA/NOAA Suomi NPP satellite is able to detect these subtle differences in greenness. The resources on this page highlight our ever-changing planet, using highly detailed vegetation index data from the satellite, developed by scientists at NOAA. The darkest green areas are the lushest in vegetation, while the pale colors are sparse in vegetation cover either due to snow, drought, rock, or urban areas. Satellite data from April 2012 to April 2013 was used to generate these animations and images."


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Louis Culotta's curator insight, July 16, 2013 5:05 PM

This is something to check out if you want to see first hand look at the green and not so green places on our planet. It really makes you see the parts of the world that get enough rain and the areas that don't that makes what we see from Satellite images from space.

Magnus Gustafsson's curator insight, July 16, 2013 5:13 PM

Useful insiight how we humans can change the world!

Al Picozzi's comment, July 18, 2013 11:19 AM
Can really see the effect of development in the Amazon river basin. Also this system can be a great use to help in areas that are facing a drought.
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Dramatic Confluences

Dramatic Confluences | Haak's APHG | Scoop.it

"Confluences occur wherever two streams come together. If the gradient is low (i.e., nearly level) and the properties of the two streams are very different, the confluences may be characterized by a dramatic visible distinction as the mixing occurs only slowly."

 

Tags:  physical, fluvial, geomorphology, erosion, landscape.


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Sylvain Rotillon's curator insight, January 7, 5:47 AM

Wonderful pictures of rivers confluences

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Seeing Equinoxes and Solstices from Space

From the Smithsonian Magazine: "

Today, March 20, is the vernal equinox, the official start of spring. (Or, in the southern hemisphere, autumn. Sorry.)  We celebrate two main sets of holidays pegged to the orientation of the Earth vis-à-vis the Sun—the “equinoxes” and the “solstices.” A few years ago the team at NASA's Earth Observatory used observations from a EUMETSAT meteorological satellite to make the video above, which shows what the solstices and equinoxes look like from space.

On the equinoxes, like the spring equinox today or the fall equinox in September, the length of the day and night are as close as they'll get. The northern hemisphere's summer solstice, in June, is the day with the most hours of sunlight. The winter solstice, in December, has the least daylight. All of it has to do with the fact that the Earth's rotation axis is tilted 23.5 degrees relative to the orbit we take as we circle the Sun.

For those inclined towards exploring Earth-Sun interactions, playing around with the University of Nebraska-Lincoln's Sun Simulator is a fun way to make a little more sense of the various factors that control how the Sun appears in the sky.


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