| UG |
Unocal Geothermal Northern California Network |
- Unocal Corporation, United States of America
|
United States of America |
— |
| UQ |
UNSA Regional Seismic Network |
- Universidad Nacional de San Agustín de Arequipa - UNSA
|
— |
DOI |
| RG |
Upper-Rhine Graben Geothermal Network |
|
|
DOI |
| TA |
USArray Transportable Array |
|
|
DOI |
| RE |
US Bureau of Reclamation Seismic Networks |
- U.S. State Department, United States of America
|
|
— |
| GM |
U.S. Geological Survey Networks |
|
|
DOI |
| GS |
US Geological Survey Networks |
|
|
DOI |
| NT |
USGS Geomagnetism Program |
|
United States of America |
DOI |
| UL |
USGS Low Frequency Geophysical Data Network |
- USGS Menlo Park, United States of America
|
|
— |
| NC |
USGS Northern California Seismic Network |
- USGS Menlo Park, United States of America
|
|
DOI |
| MI |
USGS Northern Mariana Islands Network |
- USGS Alaska Anchorage, United States of America
|
|
DOI |
| EP |
UTEP Seismic Network |
- University of Texas at El Paso (UTEP), United States of America
|
|
— |
| UZ |
Uzbekistan Digital Seismic Network |
|
|
DOI |
| VA |
VAL D'AGRI NETWORK |
|
|
DOI |
| VB |
Valencian Broadband Seismic Network |
|
|
DOI |
| VL |
Vale SA Network |
- Universidade de Sao Paulo, USP, Brazil
|
Brazil |
DOI |
| VU |
Vanuatu Seismic Network |
|
|
— |
| CV |
Vigil Network, Cape Verde Islands |
|
|
— |
| VR |
Virgo Interferometric Antenna for Gravitational Waves Detection |
|
|
DOI |
| VN |
Voronezh Regional Seismic Network of the Russian Federation |
- Voronezh Laboratory of the Geophysical Survey of the Russian Academy of Sciences
|
— |
DOI |
| WK |
Wake Island Hydrophone Array |
|
United States of America |
— |
| WB |
West Bohemia Local Seismic Network |
|
|
DOI |
| WA |
West Central Argentina Network |
- Universidad Nacional de San Juan (UNSJ), Argentina
|
|
— |
| WD |
Western Canada Deformation Array |
|
— |
DOI |
| WM |
Western Mediterranean Seismic Network |
- Real Instituto y Observatorio de la Armada, Spain
|
|
DOI |
| WI |
West Indies French Seismic Network |
|
|
DOI |
| WN |
WINSENT |
|
— |
DOI |
| RY |
Yakutsk Regional Seismic Network of the Russian Federation |
- Yakutsk Branch of the Geophysical Survey of the Russian Academy of Sciences (YAGSR), Russian Federation
|
|
DOI |
| WY |
Yellowstone National Park Seismograph Network |
|
|
DOI |
| NY |
Yukon-Northwest Seismic Network |
- University of Ottawa, Canada
|
|
DOI |
| LZ |
Zambia Seismic Network |
- Geological Survey Department of Zambia, Zambia
|
|
DOI |
| BZ |
ZIMBABWE SEISMIC NETWORK |
- METEOROLOGICAL SERVICES DEPARTMENT,GOETZ OBSERVATORY (MSD), Zimbabwe
|
Zimbabwe |
DOI |
