Datasets – Geo-Referenced Field
• Register a user
• Log in
– Please upload individual files or a zip file of
images (png, jpeg, gif) , < 650 MB
• Edit the uploaded file and publish them
• Query the photo library
• Upload your homework 1 photo to the library
• Be sure the photo has been geotagged and
change photo name to building names before
• Edit the online comment,
– Change Status to Public
– Choose right Category
– Description: OU Building, Building Name, 2009 Spring
field method course, Your name.
• Check the results
• Query in the library
• Seach keywords: OU building
• Or seach your own user name
• Submit the query
• Check the photo
• Scroll down and select file type and size
• Download the file
• Open in google earth
• A virtual globe, map and geographic
information program that was originally
called Earth Viewer, and was created by
Keyhole, Inc, a company acquired by
Google in 2004.
• It maps the Earth by the superimposition
of images obtained from satellite imagery,
aerial photography and GIS 3D globe.
• Released as Google Earth in 2005,Availabe on
Microsoft Windows 2000, XP, Vista, Mac OS X
10.3.9 and above, Linux (released on June 12,
2006), and FreeBSD.
• also available as a browser plugin (released on
June 2, 2008) for Firefox, Safari 3, IE6 and IE7.
• available on the iPhone OS on October 27, 2008,
as a free download from the App Store.
• In addition to releasing an updated Keyhole
based client, Google also added the imagery
from the Earth database to their web based
mapping software. Google map.
• Keyhole Earthviewer 1.0 - June 11, 2001
• Keyhole Earthviewer 1.4 - 2002
• Keyhole Earthviewer 1.6 - February 2003
• Keyhole LT 1.7.1 - August 26, 2003
• Keyhole NV 1.7.2 - October 16, 2003
• Keyhole 2.2 - August 19, 2004
• Google Earth 3.0 - June 2005
• Google Earth 4.0 - June 11, 2006
• Google Earth 4.1 - May 9, 2007
• Google Earth 4.2 - August 23, 2007
• Google Earth 4.3 - April 15, 2008
• Google Earth 5.0 Beta - February 2, 2009
• Resolution available is based somewhat
on the points of interest and popularity
• Most land (except for some islands) is
covered in at least 15 meters of resolution.
• Melbourne, Victoria, Las Vegas, Nevada,
and Cambridge, Cambridgeshire include
examples of the highest resolution, at 15
cm (6 inches).
Search and DEM
• search for addresses for some countries,
enter coordinates, or simply use the
mouse to browse to a location.
• 3D images of terrain and buildings are
• digital elevation model (DEM) data
collected by NASA's Shuttle Radar
Topography Mission (SRTM).
• Many people use the applications to add
their own data, making them available
through BBS or blog
• Google Earth is able to show all kinds of
images overlaid on the surface of the earth
and is also a Web Map Service client.
• Google Earth supports managing three-
dimensional Geospatial data through
Keyhole Markup Language (KML).
3D building and Street View
• 3D buildings and structures (such as bridges),
which consist of users' submissions using
SketchUp, a 3D modeling program.
• In version 4.3 released on April 15, 2008,
Google Street View was fully integrated into the
program allowing the program to provide an on
the street level view in many locations.
• 360°panoramic street-level views
• version 5.0 (February 2009) , the entirety of
Google Earth's ocean floor imagery was updated
to new images by SIO, NOAA, US Navy, NGA,
• Google Ocean feature allows users to zoom
below the surface of the ocean and view the 3D
bathymetry beneath the waves.
• On April 14, 2009, Google added underwater
terrain data for the Great Lakes.
Wikipedia and Panoramio
• Geographic Web Layer integration with
Wikipedia and Panoramio
• Wikipedia entries are scraped for
coordinates via the Coord templates
• Panoramio is a geolocation-oriented photo
• In version 4.2, released August 22, 2007,
Google Earth added a Sky tool for viewing
stars and astronomical images
• Hubble Space Telescope
• web-based version of Google Sky
available at http://www.google.com/sky/
• Introduced in version 5.0
• Traverse back in time and study earlier
stages of any place.
• Very useful for research purposes that
require analysis of past records of various
• Introduced in Version 5.0
• A separate globe of the planet Mars
• The maps are of a much higher resolution than those on
the browser version of Google Mars
• 3D renderings of the Martian terrain.
• extremely high resolution images from the Mars
Reconnaissance Orbiter's HiRISE camera that are of a
similar resolution to those of the cities on Earth.
• high resolution panoramic images from various Mars
landers, such as the Mars Exploration Rovers, Spirit and
Opportunity, that can be viewed in a similar way to
Google Street View.
Coordinate System and Projection
• The internal coordinate system of Google Earth
is geographic coordinates (latitude/longitude) on
the World Geodetic System of 1984 (WGS84)
• Google Earth shows the earth as it looks from an
elevated platform such as an airplane or orbiting
• The projection used to achieve this effect is
called the General Perspective. This is similar to
the Orthographic projection, except that the point
of perspective is a finite (near earth) distance
rather than an infinite (deep space) distance.
• U.S.: 15 m (some states are completely in 1 m
• Germany, Switzerland, Netherlands, Denmark,
U.K., Andorra, Luxembourg, Liechtenstein, San
Marino, Vatican City: 1 m or better
• Czech Republic 0.2 m (Prague 0.1 m) Slovakia,
Hungary: 2.5 m (medium resolution)
• Global: Generally 15 m (some areas, such as
Antarctica, are in extremely low resolution), but
this depends on the quality of the satellite/aerial
Typical high resolutions
• U.S.: 1 m, 0.6 m, 0.3 m, 0.15 m (extremely
rare; e.g. Cambridge and Google Campus,
• Europe: 0.3 m, 0.15 m (e.g. Berlin, Zürich,
Hamburg), 0.1 m Prague
• Surface: varies by country
• Seabed: Not applicable (a colorscale
approximating sea floor depth is "printed"
on the spherical surface).
Age: Images dates vary
• The image data can be seen from squares made when
DigitalGlobe Coverage is enabled. The date next to the
copyright information is not the correct image date.
• Zooming in or out could change the date of the pictures.
• Most of the international urban image dates are from
2004 and have not been updated.
• However, most US images are kept current.
• Google announces imagery updates on their LatLong
Blog in form of a quiz, with hints of the updated locations.
The answers are posted some days later in the same
• read tracks and waypoints from a GPS
• A variety of third party applications can
generate KML or KMZ files based on user-
specified or user-recorded waypoints.
• Real-time navigation
• Help – User Guide
• Help – Tutorial
• Help – shortcut
• 1.Search panel - Use this to
find places and directions and
manage search results.
Google Earth EC may display
additional tabs here.
• 2. 3D Viewer - View the
globe and its terrain in this
• 3. Toolbar buttons - See
• 4. Navigation controls - Use
these to zoom, look and
move around (see below).
• 5. Layers panel - Use this to
display points of interest.
• 6. Places panel - Use this to
locate, save, organize and
• 7. Add Content - Click this to
import exciting content from
the KML Gallery
• 8. Status bar - View
coordinate, elevation, imagery
date and streaming status
• 9 Overview map - Use this
for an additional perspective
of the Earth.
The Google Toolbar
Add Polygon Add Path Add ruler Sky View
Place mark Add Image Earth day
The Google Sidebar
level of overlays
Navigating on the Earth
• Use keyboard to navigate
– Page up page down
– Arrow to move
– Shift+Up,down to tilt shift + left,right to rotate
– N to north up
• This will help you to work in field without
• Tools - Options
• Change elevation exaggeration to 3 to
give you exaggerated terrain
• Go to Cache tab
– Chang the disk cache size to 2000 MB
– This will give you more cache for offline
Google Earth Community
• dedicated to producing placemarks of
interesting or educational perspectives