USGS scientist Cynthia Gardner examines fresh rock samples from the new growth on Mount St. Helens' dome,
John S. Pallister (Former Employee)
Science and Products
Development of a volcanic risk management system at Mount St. Helens—1980 to present
Opening letter: The long shadow of Merapi volcano
Ten ways Mount St. Helens changed our world—The enduring legacy of the 1980 eruption
Indonesia and the United States team up to reduce impacts from dangerous volcanoes
Overview of the eruptions of Sinabung Volcano, 2010 and 2013-present, and details of the 2013 phreatomagmatic phase
The eruptions of Sinabung and Kelud Volcanoes, Indonesia
The 2017-19 activity at Mount Agung in Bali (Indonesia): Intense unrest, monitoring, crisis response, evacuation, and eruption
Construction of probabilistic event trees for eruption forecasting at Sinabung volcano, Indonesia 2013–14
Field-trip guide to Mount St. Helens, Washington - An overview of the eruptive history and petrology, tephra deposits, 1980 pyroclastic density current deposits, and the crater
Using multiple data sets to populate probabilistic volcanic event trees
Merapi 2010 eruption—Chronology and extrusion rates monitored with satellite radar and used in eruption forecasting
The 2010 eruption of Merapi volcano
USGS scientist Cynthia Gardner examines fresh rock samples from the new growth on Mount St. Helens' dome,
Harrat Lunayyir basalt cinder cones and lava flows in Saudi Arabia seen from an aerial perspective. Deposits from the cinder cones cover nearby ridges and form fans at the base of the older non-volcanic ridge in the background. These well-preserved geomorphic forms indicate the relative youth of this northern part of the volcanic field.
Harrat Lunayyir basalt cinder cones and lava flows in Saudi Arabia seen from an aerial perspective. Deposits from the cinder cones cover nearby ridges and form fans at the base of the older non-volcanic ridge in the background. These well-preserved geomorphic forms indicate the relative youth of this northern part of the volcanic field.
Wendy McCausland of the USGS Volcano Disaster Assistance Program and Hani Zahran of the Saudi Geological Survey view the southern end of the surface fault rupture caused by a M5.4 earthquake in the Saudi Arabian desert on May 19, 2009.
Wendy McCausland of the USGS Volcano Disaster Assistance Program and Hani Zahran of the Saudi Geological Survey view the southern end of the surface fault rupture caused by a M5.4 earthquake in the Saudi Arabian desert on May 19, 2009.
Science and Products
Development of a volcanic risk management system at Mount St. Helens—1980 to present
Opening letter: The long shadow of Merapi volcano
Ten ways Mount St. Helens changed our world—The enduring legacy of the 1980 eruption
Indonesia and the United States team up to reduce impacts from dangerous volcanoes
Overview of the eruptions of Sinabung Volcano, 2010 and 2013-present, and details of the 2013 phreatomagmatic phase
The eruptions of Sinabung and Kelud Volcanoes, Indonesia
The 2017-19 activity at Mount Agung in Bali (Indonesia): Intense unrest, monitoring, crisis response, evacuation, and eruption
Construction of probabilistic event trees for eruption forecasting at Sinabung volcano, Indonesia 2013–14
Field-trip guide to Mount St. Helens, Washington - An overview of the eruptive history and petrology, tephra deposits, 1980 pyroclastic density current deposits, and the crater
Using multiple data sets to populate probabilistic volcanic event trees
Merapi 2010 eruption—Chronology and extrusion rates monitored with satellite radar and used in eruption forecasting
The 2010 eruption of Merapi volcano
USGS scientist Cynthia Gardner examines fresh rock samples from the new growth on Mount St. Helens' dome,
USGS scientist Cynthia Gardner examines fresh rock samples from the new growth on Mount St. Helens' dome,
Harrat Lunayyir basalt cinder cones and lava flows in Saudi Arabia seen from an aerial perspective. Deposits from the cinder cones cover nearby ridges and form fans at the base of the older non-volcanic ridge in the background. These well-preserved geomorphic forms indicate the relative youth of this northern part of the volcanic field.
Harrat Lunayyir basalt cinder cones and lava flows in Saudi Arabia seen from an aerial perspective. Deposits from the cinder cones cover nearby ridges and form fans at the base of the older non-volcanic ridge in the background. These well-preserved geomorphic forms indicate the relative youth of this northern part of the volcanic field.
Wendy McCausland of the USGS Volcano Disaster Assistance Program and Hani Zahran of the Saudi Geological Survey view the southern end of the surface fault rupture caused by a M5.4 earthquake in the Saudi Arabian desert on May 19, 2009.
Wendy McCausland of the USGS Volcano Disaster Assistance Program and Hani Zahran of the Saudi Geological Survey view the southern end of the surface fault rupture caused by a M5.4 earthquake in the Saudi Arabian desert on May 19, 2009.