Esri’s ArcGIS is a geographic information system (GIS) for working with maps and geographic information. Users can research maps, images, geo databases, and tools, as a web service.Read more…
geography
ALOHA
Categories: Analysis & Modeling
ALOHA (Area Locations of Hazardous Atmospheres) is a software program designed to model chemical releases for emergency responders and planners. With help from ALOHA, users can calculate how quickly chemicals are escaping from various locations. The program also allows users to model hazardous scenarios.
With the help of ALOHA, you can calculate how quickly chemicals are escaping from tanks, puddles (on both land and water), and gas pipelines and predict how that release rate changes over time.
The program generates a variety of scenario-specific outputs, including threat zone plots, threats at specific locations, and source strength graphs. You can then display threat zones on MARPLOT maps (and on ArcView and ArcMap with the Arc Tool extensions).
Google Earth
Google Earth is a virtual globe, geographical program created by Google. The program uses digital elevation model (DEM) data collected by a NASA space shuttle to create the 3D map. With Google Earth, viewers can view satellite imagery of large portions of the globe. Users can also explore ocean topography, and switch to street view which enables someone to explore roads as if they were in a car. New features of Google Earth allow a user to explore regions of the moon, Mars, and constellations in the sky. New features are being added and existing features enhanced frequently.
Google Earth is available for free download here. A Professional version with enhanced geo-coding, map-making, and GIS features is available as well.