Tuesday, October 30, 2007

Mapping Nevada

The Nevada airspace restrictions, mainly military.
The General Seismic activity of Nevada from USGS.

The satelite photo of Nevada shows the great basin and the relative patterns of the landscape.


I would like to focus on the remote sensing maps of Nevada. I have found lots of sites that give good aerial and satelite photos of Nevada. One of the best and easiest to use was http://geology.com/states/nevada.shtml. This one had good examples of several different types of maps that were mainly satelite images. They had maps of the different kind of rock found in the area to elevation data. There were also some images of scanned radar maps. These were maps of underground bedrock of Nevada and showed the relative patterens of the area and what possible elements might be there. Also it gave a good incite into why all of the mines in Nevada are where they are. They are mainly focused around small discoveries and then centered over big deposits of whatever they are mining. Most of them are open-pit mines in valleys and on the side of mountains.




Another good site I found was http://earthquake.usgs.gov/regional/states/nevada/seismicity.php. This one had seismic activity maps of Nevada. It showed the patterns of earthquakes and the frequency at which they happen along the western edge of the state. There are some that are scattered all along the mountain ranges in the center of the state but most follow the border along California, which makes since because just a few miles farther west you have the huge San Andreas fault line.


Lastly another great site wich I thought was interesting was http://dcnr.nv.gov/jan06.htm. This was a site about Nevada and the conservation of the natural recources within the state. I found a map of the airspace restrictions over Nevada and noticed almost half of the state is closed off for either military airspace and nature preserves. This was interesting because that means no one is allowed to fly over Nevada at no less thatn 10,000 ft. AGL. So there are still areas where there is very little amounts of aerial photographs being taken because of this restriction.













Thursday, October 25, 2007

Maps, the Web, and virtual Cartography

Globbale Mapper


Today these new programs like Global Mapper, and Google Earth have changed the way we percieve the world. With a map program like Google Earth you can view the entire globe from many different views. There are street maps and different directional guides to satelite images taken from all over the globe. There are even small points of interest on the maps and when you click them them pop up and give you pictures and descriptions of that point. There is almost no reason now to get lost or miss any important object while out and about anywhere in the world. These are the two programs that I am familiar with and have experienced the easy to use programs to map the world. Another great way about the technology today is the ability to remote sense an area and find out loads of information without ever visiting the place. A good example of this would be the satelite images that people use to retrieve information for mining. With all of these helpful programs now the study of Geography and Geology will become very fast paced.