In 2022, the Alaska Volcano Observatory responded to eruptions, volcanic unrest or suspected unrest, increased seismicity, and other significant activity at 11 volcanic centers in Alaska and in the Northern Mariana Islands. Eruptive activity in Alaska consisted of repeated small, ash-producing, phreatomagmatic explosions from Mount Young on Semisopochnoi Island; the eruption of a thick lava flow within the summit crater at Great Sitkin Volcano; and weak explosive activity and the eruption of small, channelized flows at Pavlof Volcano. Uplift and an increase in seismicity were detected at Mount Edgecumbe, a long-dormant volcano in southeastern Alaska. Anomalous seismicity was also detected at three other volcanoes, including Trident Volcano, Takawangha volcano, and Davidof volcano. Other activity documented in 2022 includes ash resuspension events at Mount Katmai and Aniakchak Crater, and Mount Cleveland had a period of unrest, but no eruptive activity took place. In the Commonwealth of the Northern Marianas Islands, hydroacoustic detections and a submarine plume observed in satellite data at Ahyi seamount indicated underwater eruptive activity there.
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In 2021, the Alaska Volcano Observatory responded to eruptions, volcanic unrest or suspected unrest, increased seismicity, and other significant activity at 15 volcanic centers in Alaska and the Commonwealth of the Northern Mariana Islands. Eruptive activity in Alaska consisted of repeated small, ash-producing, phreatomagmatic explosions from Mount Young on Semisopochnoi Island; an explosion at Great Sitkin Volcano followed by the eruption of a thick lava flow that filled and overflowed the summit crater; weak explosive activity and the eruption of small, channelized flows at Pavlof Volcano; and a short-lived eruption at Mount Veniaminof that produced ash emissions from an intracaldera cone, as well as lava flows confined to a melt pit in the ice mantling the cone’s flank. Mount Cleveland had a period of unrest, but no eruptive activity took place there. Anomalous seismicity was also detected at Atka volcanic complex, Mount Gareloi, and Davidof volcano. New warm springs opened and deposited mud at the summit and north base of Shrub mud volcano. Other activity of note in Alaska consisted of large ice and rock avalanches at Iliamna Volcano and Mount Spurr, ash resuspension events at Mount Katmai and Aniakchak Crater, and anomalous deformation at Mount Okmok that was consistent with a shallow intrusion of magma. In the Commonwealth of the Northern Marianas Islands, a brief, ash-producing eruption occurred at Mount Pagan.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20245014","collaboration":"The Alaska Volcano Observatory is a consortium between the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological & Geophysical Surveys","usgsCitation":"Orr, T.R., Dietterich, H.R., Fee D., Girona, T., Grapenthin, R., Haney, M.M., Loewen, M.W., Lyons, J.J., Power, J.A., Schwaiger, H.F., Schneider, D.J., Tan, D., Toney, L., Wasser, V.K., Waythomas, C.F., 2024, 2021 Volcanic activity in Alaska and the Commonwealth of the Northern Mariana Islands—Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2024–5014, 64 p., https://doi.org/10.3133/sir20245014.","productDescription":"ix, 64 p.","numberOfPages":"64","onlineOnly":"Y","ipdsId":"IP-139235","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":427361,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2024/5014/sir20245014.pdf","text":"Report","size":"26 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2024-5014"},{"id":427360,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2024/5014/covrthb.jpg"}],"country":"Northern Mariana Islands, United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -180.91039541038674,\n 52.397333461784\n ],\n [\n -179.15258291038657,\n 50.647658713281515\n ],\n [\n -154.36742666038634,\n 54.59269911796724\n ],\n [\n -144.8752391603861,\n 61.7067556778085\n ],\n [\n -148.56664541038634,\n 63.09098661447797\n ],\n [\n -154.01586416038626,\n 61.95569747993264\n ],\n [\n -158.93773916038643,\n 59.28407472678845\n ],\n [\n -165.7932079103864,\n 55.399337204164055\n ],\n [\n -173.17602041038666,\n 53.76976304468752\n ],\n [\n -178.62523916038657,\n 52.71793714020785\n ],\n [\n -180.91039541038674,\n 52.397333461784\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 146,\n 20\n ],\n [\n 146,\n 14\n ],\n [\n 144,\n 14\n ],\n [\n 144,\n 20\n ],\n [\n 146,\n 20\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Alaska Volcano Observatory
U.S. Geological Survey
4210 University Drive
Anchorage, AK 99508
The Alaska Volcano Observatory responded to eruptions, volcanic unrest or suspected unrest, increased seismicity, and other significant activity at nine volcanic centers in Alaska in 2020. The most notable volcanic activity in 2020 was an eruption of Shishaldin Volcano, which produced lava flows, lahars, and ash. Mount Cleveland had one small ash-producing eruption in June but was quiet thereafter. Other activity documented in 2020 consisted of elevated seismicity at the volcanoes Mount Veniaminof, Pavlof Volcano, Makushin Volcano, Atka volcanic complex (Korovin Volcano), Great Sitkin Volcano, and Semisopochnoi Island. Finally, the resuspension of ash deposited during the 1912 Novarupta-Katmai eruption was documented on three occasions.
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U.S. Geological Survey
4210 University Drive
Anchorage, AK 99508
The Alaska Volcano Observatory responded to eruptions, volcanic unrest or suspected unrest, increased seismicity, and other significant activity at 17 volcanic centers in Alaska in 2019. The most notable volcanic activity was an eruption of Shishaldin Volcano, featuring eruptive activity that produced lava flows, lahars, and ash. Weak explosive activity also took place at Great Sitkin Volcano and Semisopochnoi Island. Mount Cleveland had one small ash-producing eruption followed by dome growth in early January but was quiet thereafter, and flank activity at Shrub mud volcano produced new mud deposits. Other activity documented in 2019 consists of declining unrest at Mount Veniaminof after its 2018 eruption; large ice and rock avalanches at Iliamna Volcano and Mount Spurr; anomalous seismicity and an increase in degassing at Pavlof Volcano; long-term inflation at Westdahl volcano, Akutan Volcano, and Mount Okmok; steam plumes and anomalous seismicity at Makushin Volcano; elevated seismicity at Mount Martin; and resuspended ash from the 1912 Novarupta-Katmai eruption deposits.
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4210 University Drive
Anchorage, AK 99508
The Alaska Volcano Observatory responded to eruptions, considerable and minor volcanic unrest, and seismic events at 15 volcanic centers in Alaska during 2018. The most notable volcanic activity came from Mount Cleveland, which had continuing intermittent dome growth and ash eruptions, and Mount Veniaminof, Great Sitkin Volcano, and Semisopochnoi Island, the three of which had minor eruptions. This report also documents landslides at Iliamna Volcano; resuspended ash from the 1912 Novarupta-Katmai eruption; anomalous seismicity and heightened degassing at Pavlof Volcano; seismic unrest at Shishaldin Volcano; long-term inflation at Westdahl volcano, Akutan Volcano, and Mount Okmok; steam plumes, anomalous seismicity, and anomalous gas measurements at Makushin Volcano; elevated seismicity at Mount Gareloi; seismic signals possibly related to icequakes at Mount Spurr; and new mud flows at Shrub mud volcano.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20235029","programNote":"The Alaska Volcano Observatory is a consortium between the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys","usgsCitation":"Cameron, C.E., Orr, T.R., Dixon, J.P., Dietterich, H.R., Waythomas, C.F., Iezzi, A.M., Power, J.A., Searcy, C., Grapenthin, R., Tepp, G., Wallace, K.L., Lopez, T.M., DeGrandpre, K., and Perreault, J.M., 2023, 2018 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2023–5029, 68 p., https://doi.org/10.3133/sir20235029.","productDescription":"vii, 68 p.","numberOfPages":"68","onlineOnly":"Y","ipdsId":"IP-120153","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":500890,"rank":6,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_114715.htm","text":"Mount Okmok; Mount Cleveland; Great Sitkin Volcano","linkFileType":{"id":5,"text":"html"}},{"id":500889,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_114714.htm","text":"Westdahl Volcano; Akutan Volcano; Makushin Volcano","linkFileType":{"id":5,"text":"html"}},{"id":500891,"rank":7,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_114716.htm","text":"Mount Gareloi; Mount Young; Semisopochnoi Volcano","linkFileType":{"id":5,"text":"html"}},{"id":500888,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_114713.htm","text":"Mount Katmai; Mount Veniaminof; Pavlof Volcano","linkFileType":{"id":5,"text":"html"}},{"id":500887,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_114712.htm","text":"Copper River Basin mud volcano; Mount Spurr; Iliamna Volcano","linkFileType":{"id":5,"text":"html"}},{"id":416689,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2023/5029/sir20235029.pdf","text":"Report","size":"37 MB","linkFileType":{"id":1,"text":"pdf"}},{"id":416688,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2023/5029/covrthb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -143.20429710112703,\n 61.84436890827459\n ],\n [\n -142.33675036318309,\n 63.49574116221564\n ],\n [\n -146.4768151759031,\n 64.33396122050729\n ],\n [\n -150.9682913255116,\n 63.72196346359824\n ],\n [\n -153.61485795645464,\n 62.14462676432551\n ],\n [\n -160.86271677978394,\n 57.38330531702596\n ],\n [\n -168.6376926084463,\n 54.5268905469634\n ],\n [\n -177.81831378466347,\n 52.19951793188412\n ],\n [\n -178.25757795577434,\n 51.654015133859275\n ],\n [\n -176.93978544244175,\n 51.32665962050979\n ],\n [\n -169.5601473677791,\n 52.146191529316866\n ],\n [\n -156.55792790289746,\n 54.975513752431766\n ],\n [\n -151.28675784956704,\n 57.477711052577945\n ],\n [\n -146.718410470014,\n 60.74058307242174\n ],\n [\n -143.20429710112703,\n 61.84436890827459\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Alaska Volcano Observatory
U.S. Geological Survey
4210 University Drive
Anchorage, AK 99508
The Alaska Volcano Observatory responded to eruptions, significant and minor volcanic unrest, and seismic events at 16 volcanic centers in Alaska during 2017. The most notable volcanic activity consisted of a major eruption at Bogoslof Island, continuing intermittent dome growth and ash eruptions from Mount Cleveland, the end of the Pavlof Volcano eruption, volcanic unrest at Shishaldin Volcano, and significant earthquake activity at Tanaga and Great Sitkin Islands. This report also documents reports of degassing at Redoubt Volcano, Makushin Volcano, Mount Gareloi, and Kiska Volcano, anomalous seismicity at Mount Spurr, Augustine Volcano, Akutan Peak, and Makushin Volcano, landslides at Iliamna Volcano, resuspended ash from the 1912 Novarupta-Katmai eruption, and continuing inflation at Okmok Caldera.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20205102","collaboration":"Prepared in cooperation with the Alaska Volcano Observatory, a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological & Geophysical Surveys","usgsCitation":"Dixon, J.P., Cameron, C.E., Iezzi, A.M., Power, J.A., Wallace, K., and Waythomas, C.F., 2020, 2017 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2020–5102, 61 p., https://doi.org/10.3133/sir20205102.","productDescription":"vii, 61 p.","numberOfPages":"61","onlineOnly":"Y","ipdsId":"IP-109226","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":381259,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2020/5102/sir20205102.pdf","text":"Report","size":"16 MB","linkFileType":{"id":1,"text":"pdf"}},{"id":381258,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2020/5102/covrthb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -139.130859375,\n 60.50052541051131\n ],\n [\n -140.80078125,\n 60.326947742998414\n ],\n [\n -140.888671875,\n 69.62651016802958\n ],\n [\n -143.7890625,\n 70.19999407534661\n ],\n [\n -152.490234375,\n 70.95969716686398\n ],\n [\n -156.26953125,\n 71.44117085172385\n ],\n [\n -158.37890625,\n 71.21607526596131\n ],\n [\n -161.982421875,\n 70.31873847853124\n ],\n [\n -167.080078125,\n 68.6885206018014\n ],\n [\n -167.783203125,\n 65.54936668811527\n ],\n [\n -165.9375,\n 61.18562468142281\n ],\n [\n -167.6953125,\n 60.19615576604439\n ],\n [\n -166.376953125,\n 59.17592824927136\n ],\n [\n -159.345703125,\n 57.98480801923985\n ],\n [\n -158.466796875,\n 57.657157596582984\n ],\n [\n -164.267578125,\n 55.429013452407396\n ],\n [\n -167.6953125,\n 54.213861000644926\n ],\n [\n -169.45312499999997,\n 52.696361078274485\n ],\n [\n -166.2890625,\n 53.225768435790194\n ],\n [\n -159.78515624999997,\n 55.62799595426723\n ],\n [\n -156.26953125,\n 56.897003921272606\n ],\n [\n -155.302734375,\n 56.84897198026975\n ],\n [\n -154.68749999999997,\n 55.97379820507658\n ],\n [\n -152.578125,\n 57.088515327886505\n ],\n [\n -151.962890625,\n 57.89149735271034\n ],\n [\n -150.99609375,\n 59.0405546167585\n ],\n [\n -148.18359375,\n 60.1524422143808\n ],\n [\n -144.404296875,\n 60.06484046010452\n ],\n [\n -138.69140625,\n 58.309488840677645\n ],\n [\n -134.38476562499997,\n 54.87660665410869\n ],\n [\n -131.044921875,\n 51.72702815704774\n ],\n [\n -131.220703125,\n 53.38332836757156\n ],\n [\n -130.60546875,\n 55.02802211299252\n ],\n [\n -130.341796875,\n 56.022948079627454\n ],\n [\n -132.451171875,\n 57.42129439209407\n ],\n [\n -134.912109375,\n 59.355596110016315\n ],\n [\n -135.35156249999997,\n 59.88893689676585\n ],\n [\n -136.31835937499997,\n 59.130863097255904\n ],\n [\n -139.130859375,\n 60.50052541051131\n ]\n ]\n ]\n }\n }\n ]\n}","contact":"Alaska Volcano Observatory
U.S. Geological Survey
4210 University Drive
Anchorage, AK 99508
The Alaska Volcano Observatory responded to eruptions, volcanic unrest or suspected unrest, and seismic events at 15 volcanic centers in Alaska during 2016. The most notable volcanic activity consisted of eruptions at Pavlof and Bogoslof volcanoes. Both eruptions produced significant ash clouds that affected regional air travel. Mount Cleveland continued a pattern of dome growth followed by explosion, producing very short-lived ash clouds. An eruptive period at Shishaldin Volcano ended in 2016.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20205125","collaboration":"Prepared in cooperation with the Alaska Volcano Observatory, a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological & Geophysical Surveys","usgsCitation":"Cameron, C.E., Dixon, J.P., Waythomas, C.F., Iezzi, A.M., Wallace, K.L., McGimsey, R.G., and Bull, K.F., 2020, 2016 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2020–5125, 63 p., https://doi.org/10.3133/sir20205125.","productDescription":"vii, 63 p.","numberOfPages":"63","onlineOnly":"Y","ipdsId":"IP-113325","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":381256,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2020/5125/coverthb.jpg"},{"id":381257,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2020/5125/sir20205125.pdf","text":"Report","size":"15 MB","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -139.130859375,\n 60.50052541051131\n ],\n [\n -140.80078125,\n 60.326947742998414\n ],\n [\n -140.888671875,\n 69.62651016802958\n ],\n [\n -143.7890625,\n 70.19999407534661\n ],\n [\n -152.490234375,\n 70.95969716686398\n ],\n [\n -156.26953125,\n 71.44117085172385\n ],\n [\n -158.37890625,\n 71.21607526596131\n ],\n [\n -161.982421875,\n 70.31873847853124\n ],\n [\n -167.080078125,\n 68.6885206018014\n ],\n [\n -167.783203125,\n 65.54936668811527\n ],\n [\n -165.9375,\n 61.18562468142281\n ],\n [\n -167.6953125,\n 60.19615576604439\n ],\n [\n -166.376953125,\n 59.17592824927136\n ],\n [\n -159.345703125,\n 57.98480801923985\n ],\n [\n -158.466796875,\n 57.657157596582984\n ],\n [\n -164.267578125,\n 55.429013452407396\n ],\n [\n -167.6953125,\n 54.213861000644926\n ],\n [\n -169.45312499999997,\n 52.696361078274485\n ],\n [\n -166.2890625,\n 53.225768435790194\n ],\n [\n -159.78515624999997,\n 55.62799595426723\n ],\n [\n -156.26953125,\n 56.897003921272606\n ],\n [\n -155.302734375,\n 56.84897198026975\n ],\n [\n -154.68749999999997,\n 55.97379820507658\n ],\n [\n -152.578125,\n 57.088515327886505\n ],\n [\n -151.962890625,\n 57.89149735271034\n ],\n [\n -150.99609375,\n 59.0405546167585\n ],\n [\n -148.18359375,\n 60.1524422143808\n ],\n [\n -144.404296875,\n 60.06484046010452\n ],\n [\n -138.69140625,\n 58.309488840677645\n ],\n [\n -134.38476562499997,\n 54.87660665410869\n ],\n [\n -131.044921875,\n 51.72702815704774\n ],\n [\n -131.220703125,\n 53.38332836757156\n ],\n [\n -130.60546875,\n 55.02802211299252\n ],\n [\n -130.341796875,\n 56.022948079627454\n ],\n [\n -132.451171875,\n 57.42129439209407\n ],\n [\n -134.912109375,\n 59.355596110016315\n ],\n [\n -135.35156249999997,\n 59.88893689676585\n ],\n [\n -136.31835937499997,\n 59.130863097255904\n ],\n [\n -139.130859375,\n 60.50052541051131\n ]\n ]\n ]\n }\n }\n ]\n}","contact":"Alaska Volcano Observatory
U.S. Geological Survey
4210 University Drive
Anchorage, AK 99508
The Alaska Volcano Observatory (AVO) responded to eruptions, volcanic unrest or suspected unrest, and seismic events at 14 volcanic centers in Alaska during 2015. The most notable volcanic activity consisted of continuing intermittent ash eruptions from Cleveland and Shishaldin volcanoes in the Aleutian Islands. Two eruptive episodes, at Veniaminof and Pavlof, on the Alaska Peninsula ended in 2015. During 2015, AVO re-established the seismograph network at Aniakchak, installed six new broadband seismometers throughout the Aleutian Islands, and added a Multiple component Gas Analyzer System (MultiGAS) station on Augustine.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20175104","collaboration":"Prepared in collaboration with University of Alaska Fairbanks Geophysical Institute and the Alaska Division of Geological and Geophysical Surveys","usgsCitation":"Dixon, J.P., Cameron, C.E., Iezzi, A.M., and Wallace, Kristi, 2017, 2015 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2017-5104, 61 p., https://doi.org/10.3133/sir20175104.","productDescription":"vi, 61 p.","numberOfPages":"72","onlineOnly":"Y","ipdsId":"IP-082299","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":346181,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2017/5104/coverthb.jpg"},{"id":346182,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2017/5104/sir20175104.pdf","text":"Report","size":"2.6 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2017-5104"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -182.724609375,\n 50.98609893339354\n ],\n [\n -148.798828125,\n 50.98609893339354\n ],\n [\n -148.798828125,\n 61.66902436927201\n ],\n [\n -182.724609375,\n 61.66902436927201\n ],\n [\n -182.724609375,\n 50.98609893339354\n ]\n ]\n ]\n }\n }\n ]\n}","contact":"Director, Volcano Science Center
U.S. Geological Survey
4230 University Drive
Anchorage, Alaska 99508
The Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, volcanic unrest or suspected unrest, and seismic events at 18 volcanic centers in Alaska during 2014. The most notable volcanic activity consisted of intermittent ash eruptions from long-active Cleveland and Shishaldin Volcanoes in the Aleutian Islands, and two eruptive episodes at Pavlof Volcano on the Alaska Peninsula. Semisopochnoi and Akutan volcanoes had seismic swarms, both likely the result of magmatic intrusion. The AVO also installed seismometers and infrasound instruments at Mount Cleveland during 2014.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20175077","collaboration":"The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological & Geophysical Surveys. The Alaska Volcano Observatory is funded by the U.S. Geological Survey Volcano Hazards Program and the State of Alaska.","usgsCitation":"Cameron, C.E., Dixon, J.P., Neal, C.A., Waythomas, C.F., Schaefer, J.R., and McGimsey, R.G., 2017, 2014 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2017–5077, 81 p., https://doi.org/10.3133/sir20175077.","productDescription":"vii, 81 p.","numberOfPages":"93","onlineOnly":"Y","ipdsId":"IP-079263","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":345550,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2017/5077/coverthb.jpg"},{"id":345551,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2017/5077/sir20175077.pdf","text":"Report","size":"7.1 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2017-5077"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -183,\n 50.51342652633956\n ],\n [\n -142,\n 50.51342652633956\n ],\n [\n -142,\n 64\n ],\n [\n -183,\n 64\n ],\n [\n -183,\n 50.51342652633956\n ]\n ]\n ]\n }\n }\n ]\n}","contact":"Director, Volcano Science Center
U.S. Geological Survey
4230 University Drive
Anchorage, Alaska, 99508
The Alaska Volcano Observatory (AVO) responded to eruptions, volcanic unrest or suspected unrest, and seismic events at 18 volcanic centers in Alaska during 2013. Beginning with the 2013 AVO Summary of Events, the annual description of the AVO seismograph network and activity, once a stand-alone publication, is now part of this report. Because of this change, the annual summary now contains an expanded description of seismic activity at Alaskan volcanoes. Eruptions occurred at three volcanic centers in 2013: Pavlof Volcano in May and June, Mount Veniaminof Volcano in June through December, and Cleveland Volcano throughout the year. None of these three eruptive events resulted in 24-hour staffing at AVO facilities in Anchorage or Fairbanks.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20155110","collaboration":"The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological & Geophysical Surveys. The Alaska Volcano Observatory is funded by the U.S. Geological Survey Volcano Hazards Program and the State of Alaska.","usgsCitation":"Dixon, J.P., Cameron, Cheryl, McGimsey, R.G., Neal, C.A., and Waythomas, Chris, 2015, 2013 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2015–5110, 92 p., https://dx.doi.org/10.3133/sir20155110.","productDescription":"vii, 92 p.","numberOfPages":"104","onlineOnly":"Y","additionalOnlineFiles":"N","ipdsId":"IP-060824","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":306769,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2015/5110/sir20155110.pdf","text":"Report","size":"35.5","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2015-5110 report"},{"id":306768,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2015/5110/coverthb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -183.2958984375,\n 51.01375465718821\n ],\n [\n -183.2958984375,\n 61.75233128411639\n ],\n [\n -149.1064453125,\n 61.75233128411639\n ],\n [\n -149.1064453125,\n 51.01375465718821\n ],\n [\n -183.2958984375,\n 51.01375465718821\n ]\n ]\n ]\n }\n }\n ]\n}","contact":"Director, Volcano Science Center
U.S. Geological Survey
4230 University Drive
Anchorage, Alaska 99508
http://volcanoes.usgs.gov/
The Alaska Volcano Observatory (AVO) responded to eruptive activity or suspected volcanic activity at or near 16 volcanoes in Alaska during 2005, including the high profile precursory activity associated with the 2005–06 eruption of Augustine Volcano. AVO continues to participate in distributing information about eruptive activity on the Kamchatka Peninsula, Russia, and in the Kurile Islands of the Russian Far East, in conjunction with the Kamchatkan Volcanic Eruption Response Team (KVERT) and the Sakhalin Volcanic Eruption Response Team (SVERT), respectively. In 2005, AVO helped broadcast alerts about activity at 8 Russian volcanoes. The most serious hazard posed from volcanic eruptions in Alaska, Kamchatka, or the Kurile Islands is the placement of ash into the atmosphere at altitudes traversed by jet aircraft along the North Pacific and Russian Trans East air routes. AVO, KVERT, and SVERT work collaboratively with the National Weather Service, Federal Aviation Administration, and the Volcanic Ash Advisory Centers to provide timely warnings of volcanic eruptions and the production and movement of ash clouds.
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In addition to responding to eruptive activity at Alaska volcanoes, AVO assisted in the dissemination of information for the Kamchatka Volcanic Eruption Response Team (KVERT) about the 2003 activity of 6 Russian volcanoes: Sheveluch, Klyuchevskoy, Bezymianny, Karymsky, Alaid, and Chikurachki volcanoes. Due to prevailing wind directions, erupting Kamchatkan, Kurile Island, and Alaskan volcanoes pose a serious potential threat to aircraft in the North Pacific.
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In addition to responding to eruptive activity at Alaskan volcanoes, AVO assisted in the dissemination of information for the Kamchatka Volcanic Eruption Response Team (KVERT) regarding the 2001 activity of 5 Russian volcanoes—Sheveluch, Klyuchevskoy, Bezymianny, Karymsky, and Avachinsky volcanoes. Due to prevailing wind directions, erupting Kamchatkan and Alaskan volcanoes pose a serious threat to aircraft in the North Pacific.
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In addition to responding to eruptive activity at Alaska volcanoes, AVO also disseminated information for the Kamchatkan Volcanic Eruption Response Team (KVERT) about the 1999 activity of four Russian volcanoes: Sheveluch, Klyuchevskoy, Bezimianny, and Karymsky volcanoes.
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