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NEWS ITEMS
2014
22nd anniversary of Crater Peak (Mt Spurr) June 27 eruption Revised Alaska Interagency Operating Plan for Volcanic Ash Episodes Anniversary of Aniakchak 1931 eruption! April 19th - anniversary of Shishaldin 1999 and Pavlof 1986! Ground-coupled airwaves and explosion signals at Shishaldin 5th anniversary of the Redoubt 2009 eruption Loss of Critical Volcano Monitoring Information in Alaska NEW VOLCANO NUMBERING SYSTEM IMPLEMENTED Loss of Critical Volcano Monitoring Information in Alaska Report released: Geochemical investigations of the hydrothermal system on Akutan Island, July 2012

2013
24th Anniversary of the 1989-90 eruption of Redoubt Volcano Veterans Day slideshow Call for images from active and retired service members! AVO operations during lapse of federal government appropriations New Tool for Reporting Alaska Volcanic Ash Fall Allows Residents to Assist Scientific Monitoring 25 years monitoring Alaska volcanoes - press release

2012
AVO slideshow for Veterans Day Large ash eruptions: when volcanoes reshape valleys -- free public lecture Father Hubbard and the history of exploration in the Valley of Ten Thousand Smokes - free lecture Remote sensing and volcanoes - free public lecture The Great Eruption of 1912 - free public lecture Infrasound Detection of Volcanic Explosions Archaeology of Katmai area and the impact of past eruptions - free public lecture Historical Photography of the Great 1912 Eruption - free public lecture Catastrophic Eruptions and People -- free public lecture Eruption of an Island Volcano: Kasatochi, 2008 -- free public lecture Exploring the Plumbing System of Katmai Volcanoes Exploration of Katmai and the Valley of Ten Thousand Smokes - free public lecture Commemorative presentation in Kodiak: Be Prepared! Earthquakes Below Alaskan Volcanoes - free public lecture DisaStory - A Day of Oral History 1912 Katmai Eruption Children's Program Monitoring Alaska's Volcanoes - free public lecture Landmark volcano study: Katmai Centennial Perspectives free download Special activities on AVO's website for 1912 centennial Alaska Park Science - Volcanoes of Katmai and the Alaska Peninsula AVO at the Alaska Aviation Trade Show and Conference May 5-6 The Great Katmai Eruption of 1912 - a free lecture in Anchorage: April 24, 2012 The Great Katmai Eruption of 1912: A Century of Research Tracks Progress in Volcano Science April 25 -- The Novarupta - Katmai 1912 eruption: a free lecture in Fairbanks by Judy Fierstein Summer lecture series on Alaskan volcanism Poster contest celebrates anniversary of Katmai eruption! Mark your calendar: April 24 public lecture on the great Novarupta-Katmai eruption of 1912 An important volcanic anniversary in Alaska! PUBLISHED: The 2009 Eruption of Redoubt Volcano, Alaska

2011
2011 Alaska Interagency Operating Plan for Volcanic Ash Episodes now available How does Cleveland's lava dome compare to Redoubt's 2009 lava dome? Alaska Volcanoes Guidebook for Teachers

2010
New Fact Sheet on Kasatochi How big is the 2009 Redoubt lava dome?

2009
New map: Historically active volcanoes of Alaska Steaming at Augustine Sarychev Volcano: Active Volcanoes of the Kurile Islands Footage of Alaska's Redoubt Volcano taken on Monday, March 23, 2009. Pre-eruption footage of Redoubt Volcano, Saturday, March 20, 2009 Redoubt Volcano B-Roll Footage

2008
Kasatochi 2008 eruption summary 6th Biennial Workshop on Subduction Processes emphasizing the Kurile-Kamchatka-Aleutian Arcs Geophysical Institute, University of Alaska, Fairbanks, Alaska Chiginagak volcano's acid crater-lake continues to supply acidic, metal-laden water to salmon spawning habitat on the Alaska Peninsula ALASKA VOLCANOES - TEACHER ACTIVITY GUIDEBOOK & KIT 20 years of AVO Viewing earthquake information for Alaska volcanoes

2007
Pavlof webcam added Activity at Pavlof volcano Pavlof thermal anomaly AVO Scientists present at U.S. Department of Education Teacher-to-Teacher Workshop Cleveland webcam available Activity at Cleveland volcano Cleveland satellite images Sheveluch Eruption U.S. Geological Survey's alert notification system for volcanic activity KVERT Volcanic Warnings Ceased

2006
New alert system for volcanic activity Three new webcams added AGU presentations requested New webcam available
LOSS OF CRITICAL VOLCANO MONITORING INFORMATION IN ALASKA
Loss of Critical Volcano Monitoring Information in Alaska
Posted: February 10, 2014
The Alaska Volcano Observatory (AVO) has experienced numerous seismic station failures and our ability to monitor activity at some volcanoes has failed or is heavily impaired. For volcanoes with failed ground instrumentation networks, AVO is unable to (1) assess whether this volcano may be building towards an eruption and/or (2) quickly confirm or dismiss reports of activity. Because these volcanoes are no longer seismically monitored, they will move from volcano alert level Normal and Aviation Color Code Green to "unassigned". As at other volcanoes without real-time seismic networks, AVO will continue to use satellite and infrasound data, and reports from pilots and ground observers to detect signs of eruptive activity. We will update this news item with links to announcements of monitoring status changes as they occur.

Monitoring instruments at Aniakchak Volcano can no longer seismically monitor unrest at the volcano. The final Aniakchak station failure was confirmed on January 23. The Information Statement for Aniakchak is
here.

Monitoring instruments at Fourpeaked volcano can no longer seismically monitor unrest at the volcano. The Information Statement from February 7 that moved Fourpeaked to Unassigned is here.


AVO has also experienced numerous seismic station failures at several other Alaska volcanoes and many of the stations that continue to work provide data only intermittently. Because we have lost the capacity to reliably identify and locate earthquakes and other seismic indicators of unrest, our ability to monitor volcanic activity and forecast eruptions in advance at these volcanoes is heavily impaired. These volcanoes currently remain on our list of seismically monitored volcanoes because we maintain a minimal capability to detect anomalous activity through intermittent data transmission or at least one functional station. Although we may be able to detect an eruption seismically, we may not be able to identify precursory seismicity and provide advance warning. Monitoring systems at Wrangell, Little Sitkin, and Semisopochnoi volcanoes failed in prior years and have not been restored. The highest priority volcanoes in Alaska are Spurr, Redoubt, Augustine, Akutan, and Makushin; networks on these volcanoes are all operating at sufficient levels to provide warnings of impending eruptions should they follow the expected patterns of activity.

See seismic network status map here: http://www.avo.alaska.edu/map/seismic_network_health.php


The status of the impaired networks may change in coming weeks and months. Seismic stations are partially solar-powered and some may resume operating as daylight hours increase in the spring. AVO will continue to attempt repairs as conditions permit.

Seismometers provide information on earthquake activity that occurs within and beneath active volcanoes. Increased earthquake activity is often the earliest identifiable precursor to a volcanic eruption, and changes in earthquake activity provide the principal scientific information used to provide advance warning of associated hazards. These warnings are used by federal, state, and municipal governments, the airline and fishing industries, local businesses, and citizens to make informed decisions to properly address hazards associated with volcanic eruptions. The principal hazard from these volcanoes is airborne volcanic ash to overflying aircraft following both local and international air routes. Additional hazards include ash fall, lahars, and other rapidly flowing mixtures of hot fragments, fluids, and gases.

We continue to monitor all Alaskan volcanoes with satellite and regional infrasound data. Additionally some volcanoes also are monitored with real-time GPS and webcams. Although we cannot forecast eruptions with these data, we may detect eruptions with a delay of tens of minutes to hours in some cases. However poor weather, common in the North Pacific, can also prohibit detection of significant eruptions using these alternate data sources.

VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu
RECORDING ON THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478
Contact AVO Privacy Accessibility Information Quality FOIA
URL: avo.alaska.edu/news.php
Page modified: May 16, 2014 09:48
Contact Information: AVO Web Team

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