Yellowstone 1985

1985

Data on these maps is obtained from the Yellowstone Volcano Observatory Seismic Network, University of Utah Seismograph Stations (formerly operated by the USGS Menlo Park), accessed through the ANSS (Advanced National Seismic System) composite catalog.
The largest recorded earthquake swarm in Yellowstone occurred in the fall of 1985 in the northwest rim of the caldera. The three-month period of increased earthquake activity included over 3000 events of magnitude 0 to 4.9 (about 1800 events with magnitudes between 1 and 4.9). Interestingly, the 1985 swarm was close in time to the change from caldera uplift to subsidence

December 1985

graph

Yellowstone December 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 9 , mag1= 38 , mag2= 32 , mag3= 2 , mag4= 0 , mag5= 0 , total= 81 , total energy released= 5.748222682 TTNT

November 1985

graph

Yellowstone November 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 43 , mag1= 68 , mag2= 57 , mag3= 9 , mag4= 2 , mag5= 0 , total= 179 , total energy released= 86.2583153 TTNT

October 1985

graph

Yellowstone October 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 223 , mag1= 145 , mag2= 32 , mag3= 13 , mag4= 2 , mag5= 0 , total= 415 , total energy released= 64.29547353 TTNT

September 1985

graph

Yellowstone September 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 38 , mag1= 26 , mag2= 13 , mag3= 0 , mag4= 0 , mag5= 0 , total= 77 , total energy released= 0.75993695 TTNT

.

August 1985

graph

Yellowstone August 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 27 , mag1= 2 , mag2= 1 , mag3= 0 , mag4= 0 , mag5= 0 , total= 30 , total energy released= 0.043559314 TTNT

.

July 1985

graph

Yellowstone July 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 17 , mag1= 3 , mag2= 1 , mag3= 0 , mag4= 0 , mag5= 0 , total= 21 , total energy released= 0.037510235 TTNT

June 1985

graph

Yellowstone June 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 27 , mag1= 10 , mag2= 1 , mag3= 0 , mag4= 0 , mag5= 0 , total= 38 , total energy released= 0.063874515 TTNT

May 1985

graph

Yellowstone May 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 19 , mag1= 2 , mag2= 0 , mag3= 0 , mag4= 0 , mag5= 0 , total= 21 , total energy released= 0.008503398 TTNT

April 1985

graph

Yellowstone April 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 40 , mag1= 4 , mag2= 1 , mag3= 0 , mag4= 0 , mag5= 0 , total= 45 , total energy released= 0.03523658 TTNT

March 1985

graph

Yellowstone March 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 149 , mag1= 20 , mag2= 7 , mag3= 2 , mag4= 1 , mag5= 0 , total= 179 , total energy released= 23.47196851 TTNT

February 1985

graph

Yellowstone February 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 12 , mag1= 6 , mag2= 0 , mag3= 0 , mag4= 0 , mag5= 0 , total= 18 , total energy released= 0.015406352 TTNT

January 1985

graph

Yellowstone January 1985 Graph - click for larger image
click graph for larger image

summary

mag<1= 9 , mag1= 0 , mag2= 1 , mag3= 0 , mag4= 0 , mag5= 0 , total= 10 , total energy released= 0.070169878 TTNT

1985 Graph Time versus Magnitude

Yellowstone January-December 1985 Graph - click for larger image

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