View Full Version : Teaching about the ocean bottom with Google Map and Google Earth.

03-13-2013, 12:09 PM
One of the most effective ways for students to learn about the ocean bottom is with a combination of Google Map, Google Earth and MyReadingMapped.

This Google Map (https://maps.google.com/maps/ms?msid=202977755949863934429.0004abf25d4dae6e4f4a 3&msa=0) and its related KML file (https://docs.google.com/file/d/0B52hHMRyBvEsTzdpSW9RVFJRX2U4MmY1eHk5SklSdw/edit)and blog page (http://myreadingmapped.blogspot.com/2011/09/interactive-map-of-oceanic-trenches_02.html) provide a detailed visual breakdown of the features of the bottom of the ocean.

The Google Map shown here plots the color-coded locations of over one hundred features linked to Wikipedia descriptions that include Continental Shelfs, Submarine Canyons, Oceanic Basins, Abyssal Plains, Seamounts, Oceanic Plateaus, Mid-Ocean Ridges, and Oceanic Trenches.

http://4.bp.blogspot.com/-hEERzS0_V3o/T1UQclP_VfI/AAAAAAAABAo/UewPnaomIzk/s320/Oceanic+Trenches+and+other+Undersea+Phenomena+in+G oogle+Map.JPG

The blog page for this map includes a visual dictionary of these features. For example:

Seamounts: A seamount is a mountain rising from the ocean seafloor that does not reach to the water's surface (sea level), and thus is not an island. These are typically formed from extinct volcanoes, that rise abruptly and are usually found rising from theseafloor to 1,000-4,000 metres (3,000-13,000 ft) in height. They are defined by oceanographers as independent features that rise to at least 1,000 metres (3,281 ft) above the seafloor.


Top view.


Side view.

Also, this blog has a page on Understanding the Ocean Bottom in Google Map (http://myreadingmapped.blogspot.com/2012/10/understanding-ocean-bottom-in-google-map.html) which explains some features of the ocean bottom that relate to how Google represents the bottom in regard to blurring it to reduce the amount of memory, etc.


Why above sea mountains can be seen in Google Earth their entirety undersea

With the KML file, students can walk the ocean bottom

There is even a article about finding a 342-foot tsunami in Google Earth (http://myreadingmapped.blogspot.com/2013/01/how-i-discovered-tsunami-in-google-earth.html), complete with photos and KML file.