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Digital geologic map data for Semisopochnoi Island, Alaska

This dataset contains digital data that were used for the creation of a geologic map shown in Figure 3 in USGS SIR 2017-5150; Postglacial Eruptive History and Geochemistry of Semisopochnoi Volcano, Western Aleutian Islands, Alaska by Coombs, M.L. and others. The map shows the generalized geology of the island and the locations of stations occupied during field work conducted in the summer of 2005.

High-Resolution Aeromagnetic Survey of Mono Basin and Long Valley, California

A detailed aeromagnetic survey of Mono Basin and Long Valley, California was flown by EON Geosciences Inc. from October 25th to November 11th, 2012. The high-resolution helicopter survey was flown at a flightline spacing of 400 m, a flightline azimuth of 65 degrees, a nominal flightline elevation above ground of 150 m, and consists of about 6,125 line-kilometers. Tie lines were spaced at a 4-km in

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 record of

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. At the sam

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, where it for

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, before a

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 each column

Volcanic Gas Measurements at Mount Cleveland, Alaska 2016

On 25 July 2016, helicopter-based measurements were made of the volcanic gases emitted from Mount Cleveland, Alaska, USA. An upward-looking differential optical absorption spectroscopy (DOAS) system was used to measure incident scattered solar ultraviolet radiation while traversing beneath the plume on multiple occasions. These data were used to derive volcanic SO2 emission rates. Additionally, a

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 November 4-

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-dispersive X-r

Water chemistry data for selected hot springs and rivers in Southwest Yellowstone National Park, Wyoming

Water analyses are reported for 66 samples collected from numerous thermal and non-thermal (rivers and streams) features in the southwestern areas of Yellowstone National Park (YNP) during 2009, 2017, and 2018. Water samples were collected from sources near Boundary Creek, Bechler River, Falls River, Mountain Ash Creek, Upper Snake River, Spirea Creek, and Lewis Lake. These water samples were coll

Data to support modeling of the 2015 Tyndall Glacier landslide, Alaska

Landslide-generated tsunamis pose significant hazards, but developing models to assess these hazards presents unique challenges. George and others (2017) present a new methodology in which a depth-averaged two-phase landslide model (D-Claw) is used to simulate all stages of landslide dynamics and subsequent tsunami generation, propagation, and inundation. Because the model describes the evolution
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