| 1968 | Discovers ELF hiss in the plasmasphere |
| 1969 | Discovers intense, equatorially confined hiss in outer plasmasphere |
| 1970 | Discovers erosion of magnetopause for southward IMF (with Aubry and Kivelson) |
| 1971 | Discovers whistler mode shocklets upstream of bowshock |
| 1971 | Discovers polar cusp in OGO-5 data contemporaneous with ISIS and IMP |
| 1972 | Explains dynamical behavior of auroral oval as due to reconnection and flux transfer |
| 1972 | Predicts sunward convection over the polar cusp for northward IMF |
| 1973 | Explains semi-annual variation of geomagnetic activity as due to reconnection and latitudinal effects |
| 1973 | Proposes near-Earth neutral point model of substorms |
| 1974 | Explains the origin of geomagnetic storms by deep steady magnetospheric convection |
| 1974 | Proposes that substorms cause plasmoids |
| 1975 | Develops formula for predicting strength of ring current from solar wind and IMF (with Burton and McPherron) |
| 1977 | Discovers neutral point motion and accelerated flow in tail (with R. P. Lin) |
| 1977 | Discovers that northward turning of the IMF causes substorm onset (with M. Caan and R. L. McPherron) |
| 1978 | Discovers flux transfer events |
| 1979 | Discovers flux ropes in Venus ionosphere |
| 1979 | Discovers that reconnection causes accelerated flows at magnetopause (with G. Paschmann) |
| 1982 | Discovers that Mach number controls collisionless shock overshoot |
| 1982 | Measures thickness and velocity of magnetopause (with J. Berchem) |
| 1985 | Discovers flux transfer events at Mercury and Jupiter (with R. J. Walker) |
| 1986 | Measures thickness of current sheet in the tail (with D. McComas) |
| 1987 | Discovers mirror mode waves at comet Halley |
| 1989 | Discovers ULF waves in the magnetosphere of Mercury |
| 1990 | Discovers standing slow wave in the magnetosheath (with P. Song) |
| 1994 | Shows Hall MHD formalism not adequate to treat moderate and high beta plasma (with D. Orlowski) |
| 1994 | Discovers naturally occurring switch-on shock (with M. Farris) |
| 1996 | Demonstrates that low latitude boundary layer formed by cusp reconnection (with G. Le) |
| 1998 | Discovers substorm-like events in near jovian tail |
| 1998 | Discovers source of trans-ionospheric pulse pairs |
| 1998 | Determines that leading polarity of ICMEs is determined by global solar field ( with T. Mulligan) |
| 1998 | Confirms Dungey's northward IMF model |