ACRONYMS AND ABBREVIATIONS
BP | Before present |
CFu | Crater Flat unit |
CHn | Calico Hills nonwelded ash flow tuff |
DOE | U.S. Department of Energy |
ESF | Exploratory Studies Facility |
Ga | billion years ago |
ka | thousand years ago |
ky | thousands of years |
kyr | thousand years |
Ma | million years ago |
M&O | Civilian Radioactive Waste Management System Management and Operating Contractor |
MAP | mean annual precipitation |
Md | duration magnitude (a measure of earthquake size) |
MI | intensity derived magnitude (a measure of earthquake size) |
ML | local magnitude (a measure of earthquake size) |
MS | surface-wave magnitude (a measure of earthquake size) |
Mw | moment magnitude (a measure of earthquake size) |
NRC | U.S. Nuclear Regulatory Commission |
PGA | peak ground acceleration |
PGV | peak ground velocity |
PTn | Paintbrush nonwelded bedded tuffs |
Tac | Calico Hills Formation |
Tcb | Bullfrog Tuff |
Tcp | Prow Pass Tuff |
Tct | Tram Tuff |
TCw | Tiva Canyon welded tuff |
Tma | Ammonia Tanks Tuff |
Tmr | Rainier Mesa Tuff |
Tpc | Tiva Canyon Tuff |
Tpp | Pah Canyon Tuff |
Tpt | Topopah Spring Tuff |
Tptpll | Topopah Spring Tuff, lower lithophysal zone |
Tptpln | Topopah Spring Tuff, lower nonlithophysal zone |
Tptpmn | Topopah Spring Tuff, middle nonlithophysal zone |
Tptpul | Topopah Spring Tuff, upper lithophysal zone |
Tpy | Yucca Mountain Tuff |
TSw | Topopah Spring welded devitrified ash flow tuff |