For Don Eckhardt, editor of AGU's Geodynamics book series, the scope of subjects appropriate for inclusion in the series is wide. “ The forces implied in the term ‘geodynamics’ operate on this planet on all scales and from the surface deep into the interior,” he says. The articles collected in the red volumes are often united, he suggests, by “an emphasis on common techniques as much as by subject matter.”
Like the potential range of topics in the geodynamics series, the breadth of Eckhardt's professional responsibilities is large. As director of the Earth Sciences Division at the Air Force Geophysical Laboratory (AFGL) at Hanscom Air Force Base near Bedford, Mass., he oversees research and development in geodesy, gravity, seismology, geology, and dynamical astronomy. He administers more than 50 outside contracts while actively conducting theoretical and applied research of his own. In the past year, he has become well-known for his proposition that geophysical measurements made by an AFGL team demonstrate the existence and magnitude of two previously undetected fundamental forces in the universe, supplementing electromagnetism, the strong and weak nuclear forces, and Newtonian gravity.