Christina A. Neal (Former Employee)
Science and Products
Filter Total Items: 96
Satellite and ground observations of the June 2009 eruption of Sarychev Peak volcano, Matua Island, Central Kuriles Satellite and ground observations of the June 2009 eruption of Sarychev Peak volcano, Matua Island, Central Kuriles
After 33 years of repose, one of the most active volcanoes of the Kurile island arc—Sarychev Peak on Matua Island in the Central Kuriles—erupted violently on June 11, 2009. The eruption lasted 9 days and stands among the largest of recent historical eruptions in the Kurile Island chain. Satellite monitoring of the eruption, using Moderate Resolution Imaging Spectroradiometer...
Authors
A. Rybin, M. Chibisova, P. Webley, T. Steensen, P. Izbekov, Christina Neal, V. Realmuto
Variations in eruption style during the 1931 A.D. eruption of Aniakchak volcano, Alaska Variations in eruption style during the 1931 A.D. eruption of Aniakchak volcano, Alaska
The 1931 A.D. eruption of Aniakchak volcano, Alaska, progressed from subplinian to effusive eruptive style and from trachydacite to basaltic andesite composition from multiple vent locations. Eyewitness accounts and new studies of deposit stratigraphy provide a combined narrative of eruptive events. Additional field, compositional, grain size, componentry, density, and grain morphology...
Authors
Robert Nicholson, James Gardner, Christina A. Neal
Public outreach and communications of the Alaska Volcano Observatory during the 2005-2006 eruption of Augustine Volcano: Chapter 27 in The 2006 eruption of Augustine Volcano, Alaska Public outreach and communications of the Alaska Volcano Observatory during the 2005-2006 eruption of Augustine Volcano: Chapter 27 in The 2006 eruption of Augustine Volcano, Alaska
The 2005-6 eruption of Augustine Volcano in the Cook Inlet region, Alaska, greatly increased public desire for volcano hazard information, as this eruption was the most significant in Cook Inlet since 1992. In response to this heightened concern, the Alaska Volcano Observatory (AVO) increased ongoing efforts to deliver specific eruption-focused information to communities nearest to the...
Authors
Jennifer Adleman, Cheryl E. Cameron, Seth Snedigar, Christina A. Neal, Kristi L. Wallace
Hazard information management, interagency coordination, and impacts of the 2005-2006 eruption of Augustine Volcano: Chapter 28 in The 2006 eruption of Augustine Volcano, Alaska Hazard information management, interagency coordination, and impacts of the 2005-2006 eruption of Augustine Volcano: Chapter 28 in The 2006 eruption of Augustine Volcano, Alaska
Dissemination of volcano-hazard information in coordination with other Federal, State, and local agencies is a primary responsibility of the Alaska Volcano Observatory (AVO). During the 2005-6 eruption of Augustine Volcano in Alaska, AVO used existing interagency relationships and written protocols to provide hazard guidance before, during, and after eruptive events. The 2005-6 eruption...
Authors
Christina A. Neal, Thomas L. Murray, John Power, Jennifer Adleman, Paul Whitmore, Jeffery Osiensky
Emission of SO2, CO2, and H2S from Augustine Volcano, 2002-2008: Chapter 26 in The 2006 eruption of Augustine Volcano, Alaska Emission of SO2, CO2, and H2S from Augustine Volcano, 2002-2008: Chapter 26 in The 2006 eruption of Augustine Volcano, Alaska
Airborne surveillance of gas emissions from Augustine Volcano and other Cook Inlet volcanoes began in 1990 to identify baseline emission levels during noneruptive conditions. Gas measurements at Augustine for SO2, CO2, and H2S showed essentially no evidence of anomalous degassing through spring 2005. Neither did a measurement on May 10, 2005, right after the onset of low level seismicity...
Authors
Kenneth McGee, Michael Doukas, Robert McGimsey, Christina A. Neal, Rick L. Wessels
Timing, distribution, and character of tephra fall from the 2005-2006 eruption of Augustine Volcano: Chaper 9 in The 2006 eruption of Augustine Volcano Timing, distribution, and character of tephra fall from the 2005-2006 eruption of Augustine Volcano: Chaper 9 in The 2006 eruption of Augustine Volcano
The 2005–6 eruption of Augustine Volcano produced tephra-fall deposits during each of four eruptive phases. Late in the precursory phase (December 2005), small phreatic explosions produced small-volume, localized, mostly nonjuvenile tephra. The greatest volume of tephra was produced during the explosive phase (January 11–28, 2006) when 13 discrete Vulcanian explosions generated ash...
Authors
Kristi L. Wallace, Christina A. Neal, Robert McGimsey
Airborne volcanic ash; a global threat to aviation Airborne volcanic ash; a global threat to aviation
The world's busy air traffic corridors pass over or downwind of hundreds of volcanoes capable of hazardous explosive eruptions. The risk to aviation from volcanic activity is significant - in the United States alone, aircraft carry about 300,000 passengers and hundreds of millions of dollars of cargo near active volcanoes each day. Costly disruption of flight operations in Europe and...
Authors
Christina A. Neal, Marianne Guffanti
August 2008 eruption of Kasatochi volcano, Aleutian Islands, Alaska-resetting an Island Landscape August 2008 eruption of Kasatochi volcano, Aleutian Islands, Alaska-resetting an Island Landscape
Kasatochi Island, the subaerial portion of a small volcano in the western Aleutian volcanic arc, erupted on 7-8 August 2008. Pyroclastic flows and surges swept the island repeatedly and buried most of it and the near-shore zone in decimeters to tens of meters of deposits. Several key seabird rookeries in taluses were rendered useless. The eruption lasted for about 24 hours and included...
Authors
William Scott, Christopher Nye, Christopher Waythomas, Christina Neal
The July-August 2008 hydrovolcanic eruption of Okmok Volcano, Umnak Island, Alaska The July-August 2008 hydrovolcanic eruption of Okmok Volcano, Umnak Island, Alaska
No abstract available
Authors
Christina Neal, Jessica Larsen, Janet Schaefer
Eruption of Alaska volcano breaks historic pattern Eruption of Alaska volcano breaks historic pattern
In the late morning of 12 July 2008, the Alaska Volcano Observatory (AVO) received an unexpected call from the U.S. Coast Guard, reporting an explosive volcanic eruption in the central Aleutians in the vicinity of Okmok volcano, a relatively young (~2000-year-old) caldera. The Coast Guard had received an emergency call requesting assistance from a family living at a cattle ranch on the...
Authors
Jessica Larsen, Christina Neal, Peter Webley, Jeff Freymueller, Matthew Haney, Stephen McNutt, David Schneider, Stephanie Prejean, Janet Schaefer, Rick Wessels
Russian eruption warning systems for aviation Russian eruption warning systems for aviation
More than 65 potentially active volcanoes on the Kamchatka Peninsula and the Kurile Islands pose a substantial threat to aircraft on the Northern Pacific (NOPAC), Russian Trans-East (RTE), and Pacific Organized Track System (PACOTS) air routes. The Kamchatka Volcanic Eruption Response Team (KVERT) monitors and reports on volcanic hazards to aviation for Kamchatka and the north Kuriles...
Authors
Christina Neal, Olga Girina, Sergey Senyukov, Alexander Rybin, Jeffery Osiensky, Pavel Izbekov, Gail Ferguson
Active volcanoes of the Kurile Islands: A reference guide for aviation users Active volcanoes of the Kurile Islands: A reference guide for aviation users
The many volcanoes of the remote and mostly uninhabited Kurile Island arc (fig. 1; table 1) pose a serious hazard for air traffic in the North Pacific. Ash clouds from Kurile eruptions can impact some of the busiest air travel routes in the world and drift quickly into airspace managed by three countries: Russia, Japan, and the United States. Prevailing westerly winds throughout the...
Authors
Christina Neal, Alexander Rybin, Marina Chibisova, Edward Miller
Filter Total Items: 61
Science and Products
Filter Total Items: 96
Satellite and ground observations of the June 2009 eruption of Sarychev Peak volcano, Matua Island, Central Kuriles Satellite and ground observations of the June 2009 eruption of Sarychev Peak volcano, Matua Island, Central Kuriles
After 33 years of repose, one of the most active volcanoes of the Kurile island arc—Sarychev Peak on Matua Island in the Central Kuriles—erupted violently on June 11, 2009. The eruption lasted 9 days and stands among the largest of recent historical eruptions in the Kurile Island chain. Satellite monitoring of the eruption, using Moderate Resolution Imaging Spectroradiometer...
Authors
A. Rybin, M. Chibisova, P. Webley, T. Steensen, P. Izbekov, Christina Neal, V. Realmuto
Variations in eruption style during the 1931 A.D. eruption of Aniakchak volcano, Alaska Variations in eruption style during the 1931 A.D. eruption of Aniakchak volcano, Alaska
The 1931 A.D. eruption of Aniakchak volcano, Alaska, progressed from subplinian to effusive eruptive style and from trachydacite to basaltic andesite composition from multiple vent locations. Eyewitness accounts and new studies of deposit stratigraphy provide a combined narrative of eruptive events. Additional field, compositional, grain size, componentry, density, and grain morphology...
Authors
Robert Nicholson, James Gardner, Christina A. Neal
Public outreach and communications of the Alaska Volcano Observatory during the 2005-2006 eruption of Augustine Volcano: Chapter 27 in The 2006 eruption of Augustine Volcano, Alaska Public outreach and communications of the Alaska Volcano Observatory during the 2005-2006 eruption of Augustine Volcano: Chapter 27 in The 2006 eruption of Augustine Volcano, Alaska
The 2005-6 eruption of Augustine Volcano in the Cook Inlet region, Alaska, greatly increased public desire for volcano hazard information, as this eruption was the most significant in Cook Inlet since 1992. In response to this heightened concern, the Alaska Volcano Observatory (AVO) increased ongoing efforts to deliver specific eruption-focused information to communities nearest to the...
Authors
Jennifer Adleman, Cheryl E. Cameron, Seth Snedigar, Christina A. Neal, Kristi L. Wallace
Hazard information management, interagency coordination, and impacts of the 2005-2006 eruption of Augustine Volcano: Chapter 28 in The 2006 eruption of Augustine Volcano, Alaska Hazard information management, interagency coordination, and impacts of the 2005-2006 eruption of Augustine Volcano: Chapter 28 in The 2006 eruption of Augustine Volcano, Alaska
Dissemination of volcano-hazard information in coordination with other Federal, State, and local agencies is a primary responsibility of the Alaska Volcano Observatory (AVO). During the 2005-6 eruption of Augustine Volcano in Alaska, AVO used existing interagency relationships and written protocols to provide hazard guidance before, during, and after eruptive events. The 2005-6 eruption...
Authors
Christina A. Neal, Thomas L. Murray, John Power, Jennifer Adleman, Paul Whitmore, Jeffery Osiensky
Emission of SO2, CO2, and H2S from Augustine Volcano, 2002-2008: Chapter 26 in The 2006 eruption of Augustine Volcano, Alaska Emission of SO2, CO2, and H2S from Augustine Volcano, 2002-2008: Chapter 26 in The 2006 eruption of Augustine Volcano, Alaska
Airborne surveillance of gas emissions from Augustine Volcano and other Cook Inlet volcanoes began in 1990 to identify baseline emission levels during noneruptive conditions. Gas measurements at Augustine for SO2, CO2, and H2S showed essentially no evidence of anomalous degassing through spring 2005. Neither did a measurement on May 10, 2005, right after the onset of low level seismicity...
Authors
Kenneth McGee, Michael Doukas, Robert McGimsey, Christina A. Neal, Rick L. Wessels
Timing, distribution, and character of tephra fall from the 2005-2006 eruption of Augustine Volcano: Chaper 9 in The 2006 eruption of Augustine Volcano Timing, distribution, and character of tephra fall from the 2005-2006 eruption of Augustine Volcano: Chaper 9 in The 2006 eruption of Augustine Volcano
The 2005–6 eruption of Augustine Volcano produced tephra-fall deposits during each of four eruptive phases. Late in the precursory phase (December 2005), small phreatic explosions produced small-volume, localized, mostly nonjuvenile tephra. The greatest volume of tephra was produced during the explosive phase (January 11–28, 2006) when 13 discrete Vulcanian explosions generated ash...
Authors
Kristi L. Wallace, Christina A. Neal, Robert McGimsey
Airborne volcanic ash; a global threat to aviation Airborne volcanic ash; a global threat to aviation
The world's busy air traffic corridors pass over or downwind of hundreds of volcanoes capable of hazardous explosive eruptions. The risk to aviation from volcanic activity is significant - in the United States alone, aircraft carry about 300,000 passengers and hundreds of millions of dollars of cargo near active volcanoes each day. Costly disruption of flight operations in Europe and...
Authors
Christina A. Neal, Marianne Guffanti
August 2008 eruption of Kasatochi volcano, Aleutian Islands, Alaska-resetting an Island Landscape August 2008 eruption of Kasatochi volcano, Aleutian Islands, Alaska-resetting an Island Landscape
Kasatochi Island, the subaerial portion of a small volcano in the western Aleutian volcanic arc, erupted on 7-8 August 2008. Pyroclastic flows and surges swept the island repeatedly and buried most of it and the near-shore zone in decimeters to tens of meters of deposits. Several key seabird rookeries in taluses were rendered useless. The eruption lasted for about 24 hours and included...
Authors
William Scott, Christopher Nye, Christopher Waythomas, Christina Neal
The July-August 2008 hydrovolcanic eruption of Okmok Volcano, Umnak Island, Alaska The July-August 2008 hydrovolcanic eruption of Okmok Volcano, Umnak Island, Alaska
No abstract available
Authors
Christina Neal, Jessica Larsen, Janet Schaefer
Eruption of Alaska volcano breaks historic pattern Eruption of Alaska volcano breaks historic pattern
In the late morning of 12 July 2008, the Alaska Volcano Observatory (AVO) received an unexpected call from the U.S. Coast Guard, reporting an explosive volcanic eruption in the central Aleutians in the vicinity of Okmok volcano, a relatively young (~2000-year-old) caldera. The Coast Guard had received an emergency call requesting assistance from a family living at a cattle ranch on the...
Authors
Jessica Larsen, Christina Neal, Peter Webley, Jeff Freymueller, Matthew Haney, Stephen McNutt, David Schneider, Stephanie Prejean, Janet Schaefer, Rick Wessels
Russian eruption warning systems for aviation Russian eruption warning systems for aviation
More than 65 potentially active volcanoes on the Kamchatka Peninsula and the Kurile Islands pose a substantial threat to aircraft on the Northern Pacific (NOPAC), Russian Trans-East (RTE), and Pacific Organized Track System (PACOTS) air routes. The Kamchatka Volcanic Eruption Response Team (KVERT) monitors and reports on volcanic hazards to aviation for Kamchatka and the north Kuriles...
Authors
Christina Neal, Olga Girina, Sergey Senyukov, Alexander Rybin, Jeffery Osiensky, Pavel Izbekov, Gail Ferguson
Active volcanoes of the Kurile Islands: A reference guide for aviation users Active volcanoes of the Kurile Islands: A reference guide for aviation users
The many volcanoes of the remote and mostly uninhabited Kurile Island arc (fig. 1; table 1) pose a serious hazard for air traffic in the North Pacific. Ash clouds from Kurile eruptions can impact some of the busiest air travel routes in the world and drift quickly into airspace managed by three countries: Russia, Japan, and the United States. Prevailing westerly winds throughout the...
Authors
Christina Neal, Alexander Rybin, Marina Chibisova, Edward Miller
Filter Total Items: 61
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government