Christina A. Neal (Former Employee)
Science and Products
Filter Total Items: 96
Tsunami generation by pyroclastic flow during the 3500-year B.P. caldera-forming eruption of Aniakchak Volcano, Alaska Tsunami generation by pyroclastic flow during the 3500-year B.P. caldera-forming eruption of Aniakchak Volcano, Alaska
A discontinuous pumiceous sand, a few centimeters to tens of centimeters thick, is located up to 15 m above mean high tide within Holocene peat along the northern Bristol Bay coastline of Alaska. The bed consists of fine-to-coarse, poorly to moderately well-sorted, pumice-bearing sand near the top of a 2-m-thick peat sequence. The sand bed contains rip-up clasts of peat and tephra and is...
Authors
Christopher Waythomas, Christina Neal
Tephra-fall deposits from the 1992 eruption of Crater Peak, Alaska: implications of clast textures for eruptive processes Tephra-fall deposits from the 1992 eruption of Crater Peak, Alaska: implications of clast textures for eruptive processes
The 1992 eruption of Crater Peak, Mount Spurr, Alaska, involved three subplinian tephra-producing events of similar volume and duration. The tephra consists of two dense juvenile clast types that are identified by color, one tan and one gray, of similar chemistry, mineral assemblage, and glass composition. In two of the eruptive events, the clast types are strongly stratified with tan...
Authors
C. Gardner, K. Cashman, C.A. Neal
Preliminary Volcano-Hazard Assessment for Redoubt Volcano, Alaska Preliminary Volcano-Hazard Assessment for Redoubt Volcano, Alaska
Redoubt Volcano is a stratovolcano located within a few hundred kilometers of more than half of the population of Alaska. This volcano has erupted explosively at least six times since historical observations began in 1778. The most recent eruption occurred in 1989-90 and similar eruptions can be expected in the future. The early part of the 1989-90 eruption was characterized by explosive...
Authors
Christopher Waythomas, Joseph Dorava, Thomas Miller, Christina A. Neal, Robert McGimsey
What is the Alaska Volcano Observatory? What is the Alaska Volcano Observatory?
No abstract available.
Authors
C.A. Neal
Volcanic ash - danger to aircraft in the north Pacific Volcanic ash - danger to aircraft in the north Pacific
The world's busy air traffic corridors pass over hundreds of volcanoes capable of sudden, explosive eruptions. In the United States alone, aircraft carry many thousands of passengers and millions of dollars of cargo over volcanoes each day. Volcanic ash can be a serious hazard to aviation even thousands of miles from an eruption. Airborne ash can diminish visibility, damage flight...
Authors
Christina A. Neal, Thomas Casadevall, Thomas Miller, James Hendley, Peter Stauffer
1996 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory 1996 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory
During 1996, the Alaska Volcano Observatory (AVO) responded to eruptive activity, anomalous seismicity, or suspected volcanic activity at 10 of the approximately 40 active volcanic centers in the state of Alaska. As part of a formal role in KVERT (the Kamchatkan Volcano Eruption Response Team), AVO staff also disseminated information about eruptions and other volcanic unrest at six...
Authors
Christina A. Neal, Robert McGimsey
Preliminary volcanic-hazard assessment for Pavlof Volcano, Alaska Preliminary volcanic-hazard assessment for Pavlof Volcano, Alaska
No abstract available.
Authors
C. Waythomas, T. Miller, R. McGimsey, C.A. Neal
Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1993 Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1993
During 1993, the Alaska Volcano Observatory (AVO) responded to episodes of eruptive activity or false alarms at nine volcanic centers in the state of Alaska. Additionally, as part of a formal role in KVERT (the Kamchatkan Volcano Eruption Response Team), AVO staff also responded to eruptions on the Kamchatka Peninsula, details of which are summarized in Miller and Kurianov (1993). In...
Authors
Christina A. Neal, Robert McGimsey, Michael Doukas
Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory 1995 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory 1995
The Alaska Volcano Observatory (AVO) responded to eruptive activity or suspected volcanic activity (SVA) at 6 volcanic centers in 1995: Mount Martin (Katmai Group), Mount Veniaminof, Shishaldin, Makushin, Kliuchef/Korovin, and Kanaga. In addition to responding to eruptive activity at Alaska volcanoes, AVO also disseminated information for the Kamchatkan Volcanic Eruption Response Team...
Authors
Robert McGimsey, Christina A. Neal
Photographs of the 1989-90 eruptions of Redoubt Volcano, Alaska Photographs of the 1989-90 eruptions of Redoubt Volcano, Alaska
No abstract available.
Authors
A.L. Roach, Christina Neal, R. McGimsey
A catastrophic flood caused by drainage of a caldera lake at Aniakchak Volcano, Alaska, and implications for volcanic hazards assessment A catastrophic flood caused by drainage of a caldera lake at Aniakchak Volcano, Alaska, and implications for volcanic hazards assessment
Aniakchak caldera, located on the Alaska Peninsula of southwest Alaska, formerly contained a large lake (estimated volume 3.7 × 109 m3) that rapidly drained as a result of failure of the caldera rim sometime after ca. 3400 yr B.P. The peak discharge of the resulting flood was estimated using three methods: (1) flow-competence equations, (2) step-backwater modeling, and (3) a dam-break...
Authors
C. Waythomas, J. Walder, R. McGimsey, C.A. Neal
Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1994 Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1994
During 1994, the Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, or false alarms at nine volcanic centers-- Mount Sanford, Iliamna, the Katmai group, Kupreanof, Mount Veniaminof, Shishaldin, Makushin, Mount Cleveland and Kanaga (table 1). Of these volcanoes, AVO has a real time, continuously recording seismic network only at Iliamna, which is located in the...
Authors
Christina A. Neal, Michael Doukas, Robert McGimsey
Filter Total Items: 61
Science and Products
Filter Total Items: 96
Tsunami generation by pyroclastic flow during the 3500-year B.P. caldera-forming eruption of Aniakchak Volcano, Alaska Tsunami generation by pyroclastic flow during the 3500-year B.P. caldera-forming eruption of Aniakchak Volcano, Alaska
A discontinuous pumiceous sand, a few centimeters to tens of centimeters thick, is located up to 15 m above mean high tide within Holocene peat along the northern Bristol Bay coastline of Alaska. The bed consists of fine-to-coarse, poorly to moderately well-sorted, pumice-bearing sand near the top of a 2-m-thick peat sequence. The sand bed contains rip-up clasts of peat and tephra and is...
Authors
Christopher Waythomas, Christina Neal
Tephra-fall deposits from the 1992 eruption of Crater Peak, Alaska: implications of clast textures for eruptive processes Tephra-fall deposits from the 1992 eruption of Crater Peak, Alaska: implications of clast textures for eruptive processes
The 1992 eruption of Crater Peak, Mount Spurr, Alaska, involved three subplinian tephra-producing events of similar volume and duration. The tephra consists of two dense juvenile clast types that are identified by color, one tan and one gray, of similar chemistry, mineral assemblage, and glass composition. In two of the eruptive events, the clast types are strongly stratified with tan...
Authors
C. Gardner, K. Cashman, C.A. Neal
Preliminary Volcano-Hazard Assessment for Redoubt Volcano, Alaska Preliminary Volcano-Hazard Assessment for Redoubt Volcano, Alaska
Redoubt Volcano is a stratovolcano located within a few hundred kilometers of more than half of the population of Alaska. This volcano has erupted explosively at least six times since historical observations began in 1778. The most recent eruption occurred in 1989-90 and similar eruptions can be expected in the future. The early part of the 1989-90 eruption was characterized by explosive...
Authors
Christopher Waythomas, Joseph Dorava, Thomas Miller, Christina A. Neal, Robert McGimsey
What is the Alaska Volcano Observatory? What is the Alaska Volcano Observatory?
No abstract available.
Authors
C.A. Neal
Volcanic ash - danger to aircraft in the north Pacific Volcanic ash - danger to aircraft in the north Pacific
The world's busy air traffic corridors pass over hundreds of volcanoes capable of sudden, explosive eruptions. In the United States alone, aircraft carry many thousands of passengers and millions of dollars of cargo over volcanoes each day. Volcanic ash can be a serious hazard to aviation even thousands of miles from an eruption. Airborne ash can diminish visibility, damage flight...
Authors
Christina A. Neal, Thomas Casadevall, Thomas Miller, James Hendley, Peter Stauffer
1996 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory 1996 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory
During 1996, the Alaska Volcano Observatory (AVO) responded to eruptive activity, anomalous seismicity, or suspected volcanic activity at 10 of the approximately 40 active volcanic centers in the state of Alaska. As part of a formal role in KVERT (the Kamchatkan Volcano Eruption Response Team), AVO staff also disseminated information about eruptions and other volcanic unrest at six...
Authors
Christina A. Neal, Robert McGimsey
Preliminary volcanic-hazard assessment for Pavlof Volcano, Alaska Preliminary volcanic-hazard assessment for Pavlof Volcano, Alaska
No abstract available.
Authors
C. Waythomas, T. Miller, R. McGimsey, C.A. Neal
Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1993 Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1993
During 1993, the Alaska Volcano Observatory (AVO) responded to episodes of eruptive activity or false alarms at nine volcanic centers in the state of Alaska. Additionally, as part of a formal role in KVERT (the Kamchatkan Volcano Eruption Response Team), AVO staff also responded to eruptions on the Kamchatka Peninsula, details of which are summarized in Miller and Kurianov (1993). In...
Authors
Christina A. Neal, Robert McGimsey, Michael Doukas
Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory 1995 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory 1995
The Alaska Volcano Observatory (AVO) responded to eruptive activity or suspected volcanic activity (SVA) at 6 volcanic centers in 1995: Mount Martin (Katmai Group), Mount Veniaminof, Shishaldin, Makushin, Kliuchef/Korovin, and Kanaga. In addition to responding to eruptive activity at Alaska volcanoes, AVO also disseminated information for the Kamchatkan Volcanic Eruption Response Team...
Authors
Robert McGimsey, Christina A. Neal
Photographs of the 1989-90 eruptions of Redoubt Volcano, Alaska Photographs of the 1989-90 eruptions of Redoubt Volcano, Alaska
No abstract available.
Authors
A.L. Roach, Christina Neal, R. McGimsey
A catastrophic flood caused by drainage of a caldera lake at Aniakchak Volcano, Alaska, and implications for volcanic hazards assessment A catastrophic flood caused by drainage of a caldera lake at Aniakchak Volcano, Alaska, and implications for volcanic hazards assessment
Aniakchak caldera, located on the Alaska Peninsula of southwest Alaska, formerly contained a large lake (estimated volume 3.7 × 109 m3) that rapidly drained as a result of failure of the caldera rim sometime after ca. 3400 yr B.P. The peak discharge of the resulting flood was estimated using three methods: (1) flow-competence equations, (2) step-backwater modeling, and (3) a dam-break...
Authors
C. Waythomas, J. Walder, R. McGimsey, C.A. Neal
Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1994 Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 1994
During 1994, the Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, or false alarms at nine volcanic centers-- Mount Sanford, Iliamna, the Katmai group, Kupreanof, Mount Veniaminof, Shishaldin, Makushin, Mount Cleveland and Kanaga (table 1). Of these volcanoes, AVO has a real time, continuously recording seismic network only at Iliamna, which is located in the...
Authors
Christina A. Neal, Michael Doukas, Robert McGimsey
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