By Garland M. Baker
Special to A.M. Costa Rica
Google has puts Costa Rica is on the map. Literally.
Google acquired Keyhole
Corp. last October 2004 adding the firm’s service to its growing list of
its satellite imaging offerings.
Founded in 2001, Keyhole is the 3D digital Earth pioneer — the only
company to deliver a 3D digital model of the entire Earth via the Internet.
Costa Rica is now included in medium resolution. At this 80-meter to
200-meter view one can’t see what Ticos are having for breakfast, but one
can see the craters of most of the country’s volcanoes in great detail along
with other sights of the nation.
Presently, a number of Earth observation systems continuously monitor the
surface. The U.S. National Aeronautics and Space Administration along with
the U.S. Geological Survey and other organization have donated maps to
countries of Central America, allowing them to develop strategies for
protecting the environment and for urban planning. However, the
availability of the maps has been limited to people in academics and
government.
Costa Rica is now available to the general public, and it is the only
country in Central America that is, thanks to Google. Virtual tourists can
actually tour almost the entire country using Keyhole. Real estate
developers can do site analysis and prepare movies for prospective clients
along with high-resolution printouts. The uses of digital cartography are
endless.
This technology is just getting better by the year. New satellites can
photograph the earth at an incredible one-foot spatial resolution. |
What is spatial resolution?
Spatial resolution is the distance along the ground between samples in a
satellite
photograph. If a satellite image has a spatial resolution of 30 meters this
means that one pixel in the image represents a square of 30 by 30 meters on
the Earth’s surface. In an image of this resolution, one cannot see small
buildings, but can definitely see a football field or plantations. At one-foot
resolution, one can see someone in a swimming pool.
Satellites are contributing to the growing field of GIS.
What is GIS?
Maps have always been a powerful way to represent information.
Geographic information systems (GIS) combines the power of maps, satellite
images, and aerial photographs with databases that store information behind
the maps and images to study natural hazards and disasters, population
growth, water resources, and minerals deposits, to name only a few topics on
a very long list.
Want to take at trip to Costa Rica and don’t have enough for the
airfare? Use your Internet browser and download the free trial of
Keyhole.
Travel in the comfort of your home.
If you’re planning a trip for pleasure or to evaluate a piece of
property, you can check out the area you are interested in before you come.
Garland M. Baker is a 33-year resident of Costa Rica
who provides multidisciplinary professional services to the international
community. Reach him at
info@crexpertise.com. Baker has undertaken the research leading to
these series of articles in conjunction with A.M. Costa Rica. |