Tim R. Orr 2011 Since 2004, the U.S. Geological Survey's Hawaiian Volcano Observatory has used mass-market digital time-lapse cameras and network-enabled Webcams for visual monitoring and research. The 26 time-lapse movies in this report were selected from the vast collection of images acquired by these camera systems during 2004–2008. Chosen for their content and broad aesthetic appeal, these image sequences document a variety of flow-field and vent processes from Kīlauea's east rift zone eruption, which began in 1983 and is still (as of 2011) ongoing. application/pdf 10.3133/ds621 en U.S. Geological Survey Selected time-lapse movies of the east rift zone eruption of KĪlauea Volcano, 2004–2008 reports