Time series showing daily vertical GPS positions from the continuous GPS station HUSB between 2001 and 2022.
Multimedia
Images
GPS time series from station HUSB, 2001-2022
Time series showing daily vertical GPS positions from the continuous GPS station HUSB between 2001 and 2022.
Deformation and seismicity near South Sister during 2001-2022
Comparison of vertical GPS motion measured at station HUSB (top) with earthquake depth (bottom). Red line is a 60-day average of the cleaned GPS time series plotted in gray. Earthquakes are plotted with respect to their magnitudes. The swarm in 2004 represents the vast majority of earthquake in the vicinity of the deforming region.
Comparison of vertical GPS motion measured at station HUSB (top) with earthquake depth (bottom). Red line is a 60-day average of the cleaned GPS time series plotted in gray. Earthquakes are plotted with respect to their magnitudes. The swarm in 2004 represents the vast majority of earthquake in the vicinity of the deforming region.
Interferogram spanning 2020-2021 and showing uplift west of South Sister
Satellite radar interferogram spanning June 19, 2020, to August 13, 2021, and showing the ground motion in the direction of the satellite.
Satellite radar interferogram spanning June 19, 2020, to August 13, 2021, and showing the ground motion in the direction of the satellite.
Deformation near South Sister from GPS data, 2001-2017
Horizontal displacements from campaign (black vectors) and continuous (red vectors, with station names given) GPS stations, as well as vertical displacements (indicated by color of GPS station symbol) near South Sister, Oregon. Length of arrow gives amount of horizontal displacement, with scale in lower left showing an arrow length
Horizontal displacements from campaign (black vectors) and continuous (red vectors, with station names given) GPS stations, as well as vertical displacements (indicated by color of GPS station symbol) near South Sister, Oregon. Length of arrow gives amount of horizontal displacement, with scale in lower left showing an arrow length
Temporary GPS stations recording area deformation at Three Sisters, OR
Temporary Global Positioning Systems (GPS) stations are deployed to determine if uplift continues in the Three Sisters area. Since surface changes were discovered in 2001, the rate of uplift has decreased to less than 1.0 cm (0.4 in.) per year.
Temporary Global Positioning Systems (GPS) stations are deployed to determine if uplift continues in the Three Sisters area. Since surface changes were discovered in 2001, the rate of uplift has decreased to less than 1.0 cm (0.4 in.) per year.
Three Sisters, OR simplified hazards map
Three Sisters, Oregon simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.
Three Sisters, Oregon simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.
Videos
Tracking uplift near Three Sisters volcanoes, using semi-permanent GPS instruments
USGS geologist Dan Dzurisin is near Sisters, in Central Oregon, to set up portable GPS monitoring equipment to track something that's been going on for 25 years and still goes on today. It’s uplift, a subtle rise in the ground’s surface, in an area west of South Sister volcano.
USGS geologist Dan Dzurisin is near Sisters, in Central Oregon, to set up portable GPS monitoring equipment to track something that's been going on for 25 years and still goes on today. It’s uplift, a subtle rise in the ground’s surface, in an area west of South Sister volcano.