UC Berkeley’s Early Warning System Beat Napa Earthquake by 10 Seconds
Ten seconds before the San Francisco Bay Area started shaking early Sunday morning, an experimental system in a UC Berkeley lab sounded an alarm, counting down to the impending earthquake. The system works through an array of sensors near the fault line which calculate the severity of the quake and broadcast a warning.
It might not seem like much, but even a few seconds notice could allow utilities to shut off gas lines, elevators to let people off at the next floor, and trains to slow down. The USGS cites the benefits a warning could give to a doctor in the middle of performing surgery. In 2012, BART adopted an automatic braking system linked to the program, called Shake Alert.
Nature: No Photoshop required.
1. Lenticular Clouds
2. Anvil Clouds
3. Cirrus Kelvin-Helmholtz Clouds
4. Fallstreak Hole
5. Mammatus Clouds
6. Polar Stratospheric Cloud
7. Roll Cloud
8. Undulatus Asperatus
9. Mammatus Clouds
10. Undulatus Asperatus
Nos. 4 and 7. Would enjoy seeing them. Experienced the rest.
What was over Atlanta this morning?
“Undulatus asperatus” clouds.
Cause? Gravity wave packet.
According to Wikipedia:
"Undulatus asperatus (or alternately, asperatus) is a cloud formation, proposed in 2009 as a separate cloud classification by the founder of the Cloud Appreciation Society. If successful it will be the first cloud formation added since cirrus intortus in 1951 to the International Cloud Atlas of the World Meteorological Organization."
Sunset over The Rockies. Crepuscular rays.
Melting and freezing. “Cool” science.
Giant mountain-wave cloud. Carson City, Nev.
Rare capture: iridescent cloud over Boulder, Colo.