domingo, 16 de noviembre de 2003

Una impresionante foto que nos señala las diferencias de la Tierra. Claramente, podemos destacar las diferencias en el nivel de urbanizacion, de unas zonas del globo a otras.

Published by: Goddard Space Flight Center
Date Published: Wednesday, January 31, 2001
Title: Earth's City Lights at Night

This image of Earth’s city lights was created with data from the Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS). Originally designed to view clouds by moonlight, the OLS is also used to map the locations of permanent lights on the Earth’s surface. The brightest areas of the Earth are the most urbanized, but not necessarily the most populated. (Compare western Europe with China and India.) Cities tend to grow along coastlines
and transportation networks. Even without the underlying map, the outlines of many continents would still be visible.
The United States interstate highway system appears as a lattice connecting the brighter dots of city centers.
In Russia, the Trans-Siberian railroad is a thin line stretching from Moscow through the center of Asia to Vladivostok.
The Nile River, from the Aswan Dam to the Mediterranean Sea, is another bright thread through an otherwise dark region.

Por si deseais observar la misma imagen en alta resolucion (536k)