| Hazard in the Heartland |
| May 1997 | Table of Contents | Volume 42 | Number 5 |
|
| Hazard in the Heartland |
| May 1997 | Table of Contents | Volume 42 | Number 5 |
DEPARTMENTS
POLITICAL SCENE
Federal Lands and the Geosciences
David Applegate
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
Afford
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
Grasberg
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.
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