Acknowledgments_2001_Earth-Magnetism

Vista previa del material en texto

Acknowledgments 
This small book began during a Wednesday hiking group. Walter Page and my 
other nontechnical friends often asked questions about my lifelong specialty, 
the natural magnetic fields of the Earth. I had to find ways to explain these 
phenomena without equations and to answer types of questions that rarely 
arise from my more scientific colleagues. I so enjoyed this regular Wednesday 
challenge that this book developed quite easily. 
Although most illustrations are of my own creation, I thank the many orga- 
nizations that provided special figures for this book, in particular the National 
Geophysical Data Center of NOAA, the Space Environment Center of NOAA, 
the Geomagnetism Section of USGS, and the Goddard Space Flight Center of 
NASA. 
Finally, I thank my wife, Beth, for proofreading the manuscript and toler- 
ating my time at the computer, away from household duties. 
W.H.C. 
xxi