| Abbreviation | Definition |
|---|---|
| UYV | Upper Yadkin Valley |
| UYV | Upper Yakima Valley |
| UYZ | Upper Yukon Zone |
| VEI | Volcanic Explosivity Index |
| VES | Vertical Electrical Sounding |
| VESU | Mount Vesuvius |
| VF | Via Filling |
| VGP | Visiting Geologists Program |
| VGP | Volcanoes, Geochemistry, and Petrology section of American Geophysical Union |
| VHMS | Volcanic-Hosted Massive Sulfide |
| VHP | U. S. Geological Survey Volcano Hazards Program |
| VINCI | Virtual Intelligent Networks for Computing |
| VMM | Volcanomagnetic Modeling Maglab |
| VO | Volcano Observatory |
| VOG | VOlcanic Smog |
| VPT | Verified Paper Trails |
| VR | Volcano Run |
| VRM | viscous remanent magnetization |
| VRSD | Visualization of Remote Sensing Data |
| VRSR | VectorSeis Remote Seismic Recorder |