Taking the Pulse of Yellowstone’s “Breathing” Caldera Deformation Slide 1

Taking Yellowstone’s Pulse Ground deformation—Slide 2 Measuring deformation in ancient times

Measuring Elevation Changes: the Leveling Line—Slide 3 Reference map for leveling data

Measuring Elevation Changes: Analyzing the Leveling Data—Slide 4 Leveling data from Lake Butte to Mount Washburn, 1923 - 1995

Slide 5—Measuring Elevation Changes using GPS Data MAWY P720 P721 P714 NRWY HVWY LKWY OFW2 P680 P709 P710 P711 P712 P713 P716 WLWY Lake Butte Overlook Mount Washburn Yellowstone GPS stations

Measuring Elevation Changes: Analyze Data from Four GPS Stations—Slide 6 HVWY LKWY OFW2 WLWY Lake Butte Overlook Mount Washburn HVWY LKWY OFW2 WLWY

Measuring Elevation Changes Graphing the GPS Data—Slide 7 If your teacher asks you to, you’ll make a graph similar to the leveling data graph. For each station, plot the height for 2004 then the years when the graph is at maximum(s) or minimums. The data from GPS station OFW2 has been graphed for three dates. Your teacher might have you graph every year. The data is ‘messy’ so use an average height for the date. Use a different color or symbol for each year’s data – but also make sure to use the same symbol and color for the same year on the different GPS stations. Draw your colors and symbols in the key. Key 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 10 20 30 40 50 HVWY LKWY OFW2 WLWY Distance (km) Height: Vertical Displacement (mm) 100 150 200 250 -50 -100 300

Animation of GPS Data from 2004-2011 Slide 8

Measuring Ground with Radar Satellite Measuring ground deformation by radar satellite