“Overall subsidence of Yellowstone caldera is indicated at stations on both the Sour Creek and Mallard Lake resurgent domes, although minor deviations are superimposed on the general trend, perhaps due to seasonal variations from inclement weather.
“In the area of Norris Geyser Basin, GPS data show subsidence of about two centimetres – less than one inch – since September, but there was little net motion during the month of November.”
Thankfully, none of these events signal any type of worrying activity deep underground.
According to the USGS, earthquake activity at Yellowstone “remains at background levels”.
