Data
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Digital database of the geologic map of Alamagan Volcano, northern Mariana Islands Digital database of the geologic map of Alamagan Volcano, northern Mariana Islands
Alamagan Volcano is a Quaternary stratovolcano along the Mariana Arc, an active subduction zone in the western Pacific Ocean. Although primarily submerged, its peak reaches above sea level, with subaerially-exposed volcanic deposits dating back through the Holocene to the late Pleistocene. These feature data represent such deposits and other geologic features of Alamagan Volcano...
Lava level and crater geometry data during the 2018 lava lake draining at Kilauea Volcano, Hawaii Lava level and crater geometry data during the 2018 lava lake draining at Kilauea Volcano, Hawaii
In May 2018, the onset of new eruptive activity on the lower flank of Kīlauea Volcano, Hawaiʻi, accompanied the draining of the lava lake at the summit, 40 km upslope. The lava lake draining lasted over seven days, and transitioned into the largest collapse event at the summit of Kīlauea in over 200 years, with the paired flank and summit activity marking a historic episode in the modern...
Cyclic lava effusion during the 2018 eruption of Kilauea Volcano: data release Cyclic lava effusion during the 2018 eruption of Kilauea Volcano: data release
This USGS data release includes data related to the Science magazine manuscript "Cyclic lava effusion during the 2018 eruption of Kilauea Volcano" by Patrick et al. The data release includes 1) original video as well as thermal, and timelapse images of lava in the proximal Fissure 8 channel, 2) derived estimates of lava level in the channel and bulk effusion rates (not corrected for...
Differential Optical Absorption Spectroscopy data acquired during the 2018 rift eruption of Kilauea Volcano Differential Optical Absorption Spectroscopy data acquired during the 2018 rift eruption of Kilauea Volcano
A fissure eruption occurred in K?lauea Volcano?s Lower East Rift Zone (LERZ) from April to September 2018. During this event, volcanic gases were emitted from three active areas on the volcano. The most intense degassing occurred at the active fissures in the LERZ, thus causing parts of Hawai?i Island?s Puna district to be exposed to life-threatening sulfur dioxide (SO2) concentrations...
Digital elevation model of K?lauea Volcano, Hawaii, based on July 2019 airborne lidar surveys Digital elevation model of K?lauea Volcano, Hawaii, based on July 2019 airborne lidar surveys
The 2018 eruption of Kilauea Volcano on the Island of Hawaii saw the collapse of a new, nested caldera at the volcano?s summit, and the inundation of 35.5 square kilometers (13.7 square miles) of the lower Puna District with lava. Between May and August, while the summit caldera collapsed, a lava channel extended 11 kilometers (7 miles) from fissure 8 in Leilani Estates to Kapoho Bay...
Geospatial database of the 2018 lower East Rift Zone eruption of Kilauea Volcano, Hawaii Geospatial database of the 2018 lower East Rift Zone eruption of Kilauea Volcano, Hawaii
The 2018 lower East Rift Zone eruption of Kilauea Volcano began in the late afternoon of 3 May, with fissure 1 opening and erupting lava onto Mohala Street in the Leilani Estates subdivision, part of the lower Puna District of the Island of Hawaii. For the first week of the eruption, relatively viscous lava flowed only within a kilometer (0.6 miles) of the fissures within Leilani Estates...
Sensor data from natural release experiments conducted in May, 2017, at the USGS debris-flow flume, HJ Andrews Experimental Forest, Blue River, Oregon Sensor data from natural release experiments conducted in May, 2017, at the USGS debris-flow flume, HJ Andrews Experimental Forest, Blue River, Oregon
The files consist of six .csv files, with two files for each of three experiments (2017_05_16, 2017_05_17, 2017_05_18). One of the two files contain high-resolution data (1000 Hz) collected during the period of slope failure only, and the other files contain low-resolution data (10 Hz) for the entire duration of an experiment. Each of these files contains multiple columns of data, with...
Gas emission and ground temperature measurements at Puhimau thermal area, Kilauea Volcano, Hawaii Gas emission and ground temperature measurements at Puhimau thermal area, Kilauea Volcano, Hawaii
Puhimau thermal area, located in the upper East Rift Zone of K?lauea Volcano, Hawai`i formed around 1936 when heat and gases migrated to the surface following a magma intrusion. As of April 2020, the area is about 0.2 km2 in size with regions of steaming ground. The site may be valuable for monitoring changes in gas and heat emissions related to movement of magma down the rift zone. On...
Whole-rock and glass chemistry of lava samples collected during the 2018 Lower East Rift Zone eruption of Kilauea Whole-rock and glass chemistry of lava samples collected during the 2018 Lower East Rift Zone eruption of Kilauea
This data release contains selected results of whole-rock and glass analyses of lava samples collected during the 2018 eruption of Kilauea's lower East Rift Zone (LERZ). Included are sampling-site information, eruptive vent/fissure, and sampling descriptions. During the 2018 LERZ eruption, the chemical analysis of lava samples was performed within hours of collection using an energy...
Database for the geologic map of the Paeroa Fault block and surrounding area, Taupo Volcanic Zone, New Zealand Database for the geologic map of the Paeroa Fault block and surrounding area, Taupo Volcanic Zone, New Zealand
The Taupo Volcanic Zone (TVZ), New Zealand, is the most productive area of explosive silicic volcanism in the world. Faulted early and middle Pleistocene volcanic products are generally concealed beneath voluminous, generally unfaulted, younger volcanic products. An exception is the southeast margin of the TVZ where the two parallel, northeast-trending Paeroa and Te Weta Fault blocks...
Database for the Geologic Map of the Bonanza Caldera Area, Northeastern San Juan Mountains, Colorado Database for the Geologic Map of the Bonanza Caldera Area, Northeastern San Juan Mountains, Colorado
The San Juan Mountains in southwestern Colorado have long been recognized as a site of exceptionally voluminous mid-Tertiary volcanism, including at least 24 major ignimbrite sheets (each 150-5,000 km3) and associated caldera structures active at 33-23 Ma. More recent volcanologic and petrologic studies in the San Juan region have focused mainly on several ignimbrite-caldera systems: the
High-resolution digital elevation model of Mount St. Helens and upper North Fork Toutle River basin, based on airborne lidar surveys of August-September, 2017 High-resolution digital elevation model of Mount St. Helens and upper North Fork Toutle River basin, based on airborne lidar surveys of August-September, 2017
The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava domes were extruded during the subsequent eruptive periods of 1980-1986 and 2004-2008. During 2017, U.S. Forest Service contracted the acquisitions of airborne lidar surveys of Mount St. Helens and upper North Fork Toutle...