My Google Map Blog

Tag: overlay

Using the Google Earth Overlay tool

by Mickey Mellen on Mar.28, 2014, under 3D Models, Argentina, Australia, Brazil, California, Denmark, England, Germany, Google Earth News, Google Earth Tips, Google Sky, Google maps, Hawaii, Indonesia, Ireland, Italy, Japan, Kenya, Mexico, Natural Landmarks, Netherlands, Sightseeing, Street Views, USA

A few months ago we took a look at some of Eric Stitt’s work on genealogy on his blog, and he continues to produce very useful tips. His latest post goes into detail about Overlays, which can be useful to Google Earth users of all levels.

ny township overlay

In researching his past, overlays can be a very valuable tool as he explains here:

I have used overlay for flying routes, shipping lanes, and mostly used for plat maps. I love plat maps, it’s like my little window to the past. You can take a plat map, stretch it over the township your ancestors lived in and then use that to figure out where things from the past laid in today’s land. For instance, how many times have you see a old farm field turn into a subdivision? What I have done is place that plat map over the township and then used placemarkers to mark the Church, School, and Cemetery and then my polygons to mark the farm.

To learn more, check out Eric’s full post or read more of our posts related to overlays.

The post Using the Google Earth Overlay tool appeared first on Google Earth Blog.

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The Bingham Canyon Mine landslide in Google Earth

by Mickey Mellen on Jun.18, 2013, under 3D Models, Argentina, Australia, Brazil, California, Denmark, England, Germany, Google Earth News, Google Earth Tips, Google Sky, Google maps, Hawaii, Indonesia, Ireland, Italy, Japan, Kenya, Mexico, Natural Landmarks, Netherlands, Sightseeing, Street Views, USA

Back in April, the Bingham Canyon Mine was home to the largest non-volcanic landslide in the history of North America, when nearly 70 million cubic meters of dirt and rock collapsed into the pit.  The NASA Earth Observatory website has posted imagery of the post-collapse site, which can be seen here:

bingham

You can view that imagery in Google Earth by loading this KML file.

Fortunately, because of the forethought of mine ownership, no one was injured or killed in the collapse:

The company that operates the mine had installed an interferometric radar system months before the event that made it possible to detect subtle changes in the stability of the pit’s walls. Signs of increasing strain prompted the mine’s operators to issue a press release seven hours before the collapse, with a warning that a landslide was imminent. All workers were evacuated and production had stopped before the landslide occurred; as a result, no one was injured.

You can read more about the collapse and the imagery on the NASA Earth Observatory site.

The post The Bingham Canyon Mine landslide in Google Earth appeared first on Google Earth Blog.

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Historic Overlay Maps of North Carolina

by Mickey Mellen on Jun.03, 2013, under 3D Models, Argentina, Australia, Brazil, California, Denmark, England, Germany, Google Earth News, Google Earth Tips, Google Sky, Google maps, Hawaii, Indonesia, Ireland, Italy, Japan, Kenya, Mexico, Natural Landmarks, Netherlands, Sightseeing, Street Views, USA

Image overlays have consistently been one of the neatest features in Google Earth.  The most common use of overlays is to show imagery that is more fresh than what can be found in Google Earth (such as this one from President Obama’s Inauguration or this one from the oil spill in the Gulf of Mexico).  However, overlays can also be used to showcase alternate maps such as detailed topography or historical maps like we’ll show you today.

The North Carolina Maps collection features an impressive collection of online maps from various sources, many of which can be viewed in your browser or downloaded to view directly in Google Earth.

north-carolina

By visiting their Historic Overlay Maps page you can find dozens of maps that can be loaded into Google Earth.

Selected maps from the North Carolina Maps project can be viewed as Historic Overlay Maps, layered directly on top of current road maps or satellite images. By fading or “seeing through” the historic maps, users are able to compare the similarities and differences between old and new maps, and to study the changes in North Carolina over time.

The Historic Overlay Maps are presented with a historic map placed on top of a current Google street map. The historic map has been geo-referenced, meaning that it should line up very closely with the current map.

Check out their Historic Overlay Maps to try them for yourself.

(via Google Maps Mania)

The post Historic Overlay Maps of North Carolina appeared first on Google Earth Blog.

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