|Hazard in the Heartland|
|May 1997||Table of Contents||Volume 42||Number 5|
Federal Lands and the Geosciences
Hazard in the Heartland: The New Madrid Seismic Zone
by Roy Van Arsdale Three great earthquakes rocked the Mississippi Valley during the winter of 1811-1812. Geological and geophysical studies of the New Madrid seismic zone are helping us learn more about the tectonic history of this region -- and what the future might hold.
Unmanned Aerial Vehicles That Even Geoscience Departments Can
by Jonathan E. Nyquist Million-dollar price tags are no obstacle to military use of unmanned aircraft. But pilotless planes can also support geoscience studies. Do-it-yourself models and more sophisticated, factory-made vehicles hold promise for such "missions" as aerial photography and airborne geophysical surveys.
Responsible Mining: Environmental Management at
by Mark Cloos Mining one of the world's largest copper deposits has proven both an engineering and environmental challenge. Minimizing the environmental impact of mining the Grasberg copper-gold orebody in Irian Jaya, Indonesia, depends on long-term monitoring, careful planning, and the use of engineering solutions.