Graph of tilting at Uēkahuna bluff, Kīlauea

Graph of tilting at Uēkahuna bluff—at the summit of Kīlauea—in a direction toward and away from Halemʻaumʻau, collected by a water tube tiltmeter (black) and an electronic tiltmeter (grey).  Major intrusions and eruptions are marked by blue and red arrows respectively. USGS plot.