DOCSLIB.ORG

2005 Volcanic Activity in Alaska, Kamchatka, and the Kurile Islands: Summary of Events and Response of the Alaska Volcano Observatory

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
2005 Volcanic Activity in Alaska, Kamchatka, and the Kurile Islands: Summary of Events and Response of the Alaska Volcano Observatory 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 and Geophysical Surveys . The Alaska Volcano Observtory is funded by the U.S. Geological Survey Volcano Hazards Program and the State of Alaska. 2005 Volcanic Activity in Alaska, Kamchatka, and the Kurile Islands: Summary of Events and Response of the Alaska Volcano Observatory Scientific Investigations Report 2007–5269 U.S. Department of the Interior U.S. Geological Survey Cover: Southeast flank of Augustine Volcano showing summit steaming, superheated fumarole jet, and ash dusting on snow. View is toward the northwest with Iniskin Bay in the distance. Photograph taken by Chris Waythomas, AVO/USGS, December 20, 2005. 2005 Volcanic Activity in Alaska, Kamchatka, and the Kurile Islands: Summary of Events and Response of the Alaska Volcano Observatory By R.G. McGimsey, C.A. Neal, J.P. Dixon, U.S. Geological Survey, and Sergey Ushakov, Institute of Volcanology and Seismology 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 and Geophuysical Surveys. The Alaska Volcano Observatory is funded by the U.S. Geological Survey Volcano Hazards Program and the State of Alaska. Scientific Investigations Report 2007–5269 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior DIRK KEMPTHORNE, Secretary U.S. Geological Survey Mark D. Myers, Director U.S. Geological Survey, Reston, Virginia: 2008 For product and ordering information: World Wide Web: http://www.usgs.gov/pubprod Telephone: 1-888-ASK-USGS For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment: World Wide Web: http://www.usgs.gov Telephone: 1-888-ASK-USGS Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. Suggested citation: McGimsey, R.G., Neal, C.A., Dixon, J.P., and Ushakov, Sergey, 2008, 2005 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2007–5269, 94 p. iii Contents Abstract ...........................................................................................................................................................1 Introduction.....................................................................................................................................................1 Volcanic Activity in Alaska .........................................................................................................................14 Mount Spurr Volcano .........................................................................................................................14 Iliamna Volcano ...................................................................................................................................28 Augustine Volcano ..............................................................................................................................31 Katmai Group (Mounts Martin and Magelik, Trident) ...................................................................39 Chiginagak Volcano ............................................................................................................................43 Aniakchak Volcano .............................................................................................................................48 Mount Veniaminof Volcano ...............................................................................................................50 Pavlof/Hague Volcanoes ...................................................................................................................54 Shishaldin Volcano .............................................................................................................................56 Cleveland Volcano ..............................................................................................................................57 Korovin Volcano (Atka) ......................................................................................................................59 Kasatochi Volcano ..............................................................................................................................63 Tanaga Volcano ...................................................................................................................................66 Volcanic Activity in Russia .........................................................................................................................68 Sheveluch Volcano .............................................................................................................................71 Klyuchevskoy Volcano .......................................................................................................................75 Bezymianny Volcano ..........................................................................................................................79 Karymsky Volcano ..............................................................................................................................81 Avachinsky Volcano ...........................................................................................................................82 Mutnovsky Volcano ............................................................................................................................83 Ebeko Volcano .....................................................................................................................................84 Chikurachki Volcano ...........................................................................................................................85 Acknowledgments .......................................................................................................................................86 Sources of Photographs in This Report and Other Images of Alaskan and Russian Volcanoes ...86 Summary........................................................................................................................................................86 References Cited..........................................................................................................................................86 Glossary of Selected Terms and Acronyms ............................................................................................91 iv Figures Figure 1. Map showing location of historically active volcanoes in Alaska and place names used in this summary …………………………………………… 2 Figure 2. Map showing seismically monitored Alaskan volcanoes as of December 31, 2005. …………………………………………………………… 3 Figure 3. Map showing location of Russian and Alaskan volcanoes and their proximity to North Pacific and Russian Trans East air routes …………………… 3 Figure 4. Graph showing seismicity beneath Mount Spurr from 2000 through 2005 ……… 14 Figure 5. Photograph showing growth of the summit ice cauldron at Mount Spurr between July 8, 2004, and August 1, 2005 ……………………………………… 16 Figure 6. Photographs showing development of ice cauldron June 20, 2004, to November 3, 2005 ……………………………………………………………… 17 Figure 7. Visual and FLIR views of the Mount Spurr ice cauldron on April 25, 2005 ……… 22 Figure 8A. Photograph showing location of debris-flow deposits observed on May 2, 2005 ……………………………………………………………………… 23 Figure 8B. Photograph showing close-up of the outflow point, plunge pool, scoured bedrock, and head of the debris-flow deposits (covered by fresh snow) ……… 23 Figure 9. Map showing Mount Spurr area and locations of 2004–05 debris flow deposits and other near summit features ……………………………………… 24 Figure 10. Photographs showing Spurr summit ice cauldron (A) before and (B) after lake-level decline that presumably occurred May 2, 2005 ……………………… 25 Figure 11. Visual and FLIR views of the Mount Spurr ice cauldron on June 21, 2005 ……… 26 Figure 12. Photograph showing evidence of water flow out of the same point source—see figure 8—that produced a small debris flow on May 2, 2005 …… 26 Figure 13. Photographs showing volume of snow and ice melted in the Mount Spurr ice cauldron …………………………………………………………………… 27 Figure 14. Map of area around Iliamna Volcano showing the location of South Twin, the May 15, 2005, rockslide, and seismic station ILS …………………………… 28 Figure 15A. Photograph showing view of Iliamna Volcano from the east …………………… 29 Figure 15B. Photograph showing rock avalanche on the southeast flank of South Twin …… 30 Figure 16. Histogram of number of earthquakes located per day beneath Augustine Volcano from the beginning of 1994, through December 31, 2005 ……………… 31 Figure 17. Moderate-Resolution Imaging Spectroradiometer (MODIS) satellite image taken on December 12, 2005, 2217 UTC, showing a plume (mostly steam with sulfur gas) extending about 145 km (90 mi) towards the southeast ……… 32 Figure 18A. Photograph showing vigorous steaming from multiple fumaroles on the summit of Augustine and the upper southeast flank dusted the southern flanks with remobilized ash ……………………………………………………
Load more

Recommended publications
  • This Article Appeared in a Journal Published by Elsevier. the Attached
    This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier’s archiving and manuscript policies are encouraged to visit: http://www.elsevier.com/authorsrights Author's personal copy Journal of Volcanology and Geothermal Research 263 (2013) 22–41 Contents lists available at ScienceDirect Journal of Volcanology and Geothermal Research journal homepage: www.elsevier.com/locate/jvolgeores Chronology of Bezymianny Volcano activity, 1956–2010 Olga A. Girina ⁎ Institute of Volcanology and Seismology, FED, RAS, Petropavlovsk-Kamchatsky, Russia article info abstract Article history: Bezymianny Volcano is one of the most active volcanoes in the world. In 1955, for the first time in history, Received 2 January 2012 Bezymianny started to erupt and after six months produced a catastrophic eruption with a total volume of Accepted 8 May 2013 eruptive products of more than 3 km3. Following explosive eruption, a lava dome began to grow in the Available online 28 May 2013 resulting caldera. Lava dome growth continued intermittently for the next 57 years and continues today. During this extended period of lava dome growth, 44 Vulcanian-type strong explosive eruptions occurred Keywords: between 1965 and 2012.
    [Show full text]
  • Confirmed Soc Reports List 2015-2016
    Confirmed State of Conservation Reports for natural and mixed World Heritage sites 2015 - 2016 Nr Region Country Site Natural or Additional information mixed site 1 LAC Argentina Iguazu National Park Natural 2 APA Australia Tasmanian Wilderness Mixed 3 EURNA Belarus / Poland Bialowieza Forest Natural 4 LAC Belize Belize Barrier Reef Reserve System Natural World Heritage in Danger 5 AFR Botswana Okavango Delta Natural 6 LAC Brazil Iguaçu National Park Natural 7 LAC Brazil Cerrado Protected Areas: Chapada dos Veadeiros and Natural Emas National Parks 8 EURNA Bulgaria Pirin National Park Natural 9 AFR Cameroon Dja Faunal Reserve Natural 10 EURNA Canada Gros Morne National Park Natural 11 AFR Central African Republic Manovo-Gounda St Floris National Park Natural World Heritage in Danger 12 LAC Costa Rica / Panama Talamanca Range-La Amistad Reserves / La Amistad Natural National Park 13 AFR Côte d'Ivoire Comoé National Park Natural World Heritage in Danger 14 AFR Côte d'Ivoire / Guinea Mount Nimba Strict Nature Reserve Natural World Heritage in Danger 15 AFR Democratic Republic of the Congo Garamba National Park Natural World Heritage in Danger 16 AFR Democratic Republic of the Congo Kahuzi-Biega National Park Natural World Heritage in Danger 17 AFR Democratic Republic of the Congo Okapi Wildlife Reserve Natural World Heritage in Danger 18 AFR Democratic Republic of the Congo Salonga National Park Natural World Heritage in Danger 19 AFR Democratic Republic of the Congo Virunga National Park Natural World Heritage in Danger 20 AFR Democratic
    [Show full text]
  • Remobilization of Crustal Carbon May Dominate Volcanic Arc Emissions
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by ESC Publications - Cambridge Univesity Submitted Manuscript: Confidential Title: Remobilization of crustal carbon may dominate volcanic arc emissions Authors: Emily Mason1, Marie Edmonds1,*, Alexandra V Turchyn1 Affiliations: 1 Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ *Correspondence to: [email protected]. Abstract: The flux of carbon into and out of Earth’s surface environment has implications for Earth’s climate and habitability. We compiled a global dataset for carbon and helium isotopes from volcanic arcs and demonstrated that the carbon isotope composition of mean global volcanic gas is considerably heavier, at -3.8 to -4.6 ‰, than the canonical Mid-Ocean-Ridge Basalt value of -6.0 ‰. The largest volcanic emitters outgas carbon with higher δ13C and are located in mature continental arcs that have accreted carbonate platforms, indicating that reworking of crustal limestone is an important source of volcanic carbon. The fractional burial of organic carbon is lower than traditionally determined from a global carbon isotope mass balance and may have varied over geological time, modulated by supercontinent formation and breakup. One Sentence Summary: Reworking of crustal carbon dominates volcanic arc outgassing, decreasing the estimate of fractional organic carbon burial. Main Text: The core, mantle and crust contain 90% of the carbon on Earth (1), with the remaining 10% partitioned between the ocean, atmosphere and biosphere. Due to the relatively short residence time of carbon in Earth’s surface reservoirs (~200,000 years), the ocean, atmosphere and biosphere may be considered a single carbon reservoir on million-year timescales.
    [Show full text]
  • Alaska Interagency Operating Plan for Volcanic Ash Episodes
    Alaska Interagency Operating Plan for Volcanic Ash Episodes MAY 1, 2008 Cover: A plume of volcanic gas and water vapor rises above the summit crater and growing lava dome at Augustine Volcano in southern Cook Inlet. A mantle of light brown ash discolors the snow on the upper flanks. View is towards the southwest. Photograph taken by C. Read, U.S. Geological Survey, January 24, 2006. Alaska Volcano Observatory database image from http://www.avo.alaska.edu/image.php?id=7051. Alaska Interagency Operating Plan for Volcanic Ash Episodes May 1, 2008 Table of Contents 1.0 Introduction ............................................................................................................... 3 1.1 Integrated Response to Volcanic Ash ....................................................................... 3 1.2 Data Collection and Processing ................................................................................ 4 1.3 Information Management and Coordination .............................................................. 4 1.4 Distribution and Dissemination.................................................................................. 5 2.0 Responsibilities of the Participating Agencies ........................................................... 5 2.1 ALASKA DIVISION OF HOMELAND SECURITY AND EMERGENCY MANAGEMENT (DHS&EM) .............................................................................. 5 2.2 ALASKA VOLCANO OBSERVATORY (AVO)........................................................... 6 2.2.1 Organization.....................................................................................................
    [Show full text]
  • Pskov from Wikipedia, the Free Encyclopedia Coordinates: 57°49′N 28°20′E
    Create account Log in Article Talk Read Edit View history Pskov From Wikipedia, the free encyclopedia Coordinates: 57°49′N 28°20′E Pskov (Russian: Псков; IPA: [pskof] ( listen), ancient Russian spelling "Плѣсковъ", Pleskov) is Navigation Pskov (English) a city and the administrative center of Pskov Oblast, Russia, located about 20 kilometers Псков (Russian) Main page (12 mi) east from the Estonian border, on the Velikaya River. Population: 203,279 (2010 [1] Contents Census);[3] 202,780 (2002 Census);[5] 203,789 (1989 Census).[6] - City - Featured content Current events Contents Random article 1 History Donate to Wikipedia 1.1 Early history 1.2 Pskov Republic 1.3 Modern history Interaction 2 Administrative and municipal status Help 3 Landmarks and sights About Wikipedia 4 Climate Community portal 5 Economy Recent changes 6 Notable people Krom (or Kremlin) in Pskov Contact Wikipedia 7 International relations 7.1 Twin towns and sister cities Toolbox 8 References 8.1 Notes What links here 8.2 Sources Related changes 9 External links Upload file Special pages History [edit] Location of Pskov Oblast in Russia Permanent link Page information Data item Early history [edit] Cite this page The name of the city, originally spelled "Pleskov", may be loosely translated as "[the town] of purling waters". Its earliest mention comes in 903, which records that Igor of Kiev married a [citation needed] Print/export local lady, St. Olga. Pskovians sometimes take this year as the city's foundation date, and in 2003 a great jubilee took place to celebrate Pskov's 1,100th anniversary. Create a book Pskov The first prince of Pskov was Vladimir the Great's younger son Sudislav.
    [Show full text]
  • Volcanic Arc of Kamchatka: a Province with High-␦18O Magma Sources and Large-Scale 18O/16O Depletion of the Upper Crust
    Geochimica et Cosmochimica Acta, Vol. 68, No. 4, pp. 841–865, 2004 Copyright © 2004 Elsevier Ltd Pergamon Printed in the USA. All rights reserved 0016-7037/04 $30.00 ϩ .00 doi:10.1016/j.gca.2003.07.009 Volcanic arc of Kamchatka: a province with high-␦18O magma sources and large-scale 18O/16O depletion of the upper crust 1, 2 3 1 ILYA N. BINDEMAN, *VERA V. PONOMAREVA, JOHN C. BAILEY, and JOHN W. VALLEY 1Department of Geology and Geophysics, University of Wisconsin, Madison, WI, USA 2Institute of Volcanic Geology and Geochemistry, Petropavlovsk-Kamchatsky, Russia 3Geologisk Institut, University of Copenhagen, Copenhagen, Denmark (Received March 20, 2003; accepted in revised form July 16, 2003) Abstract—We present the results of a regional study of oxygen and Sr-Nd-Pb isotopes of Pleistocene to Recent arc volcanism in the Kamchatka Peninsula and the Kuriles, with emphasis on the largest caldera- forming centers. The ␦18O values of phenocrysts, in combination with numerical crystallization modeling (MELTS) and experimental fractionation factors, are used to derive best estimates of primary values for ␦18O(magma). Magmatic ␦18O values span 3.5‰ and are correlated with whole-rock Sr-Nd-Pb isotopes and major elements. Our data show that Kamchatka is a region of isotopic diversity with high-␦18O basaltic magmas (sampling mantle to lower crustal high-␦18O sources), and low-␦18O silicic volcanism (sampling low-␦18O upper crust). Among one hundred Holocene and Late Pleistocene eruptive units from 23 volcanic centers, one half represents low-␦18O magmas (ϩ4 to 5‰). Most low-␦ 18O magmas are voluminous silicic ignimbrites related to large Ͼ10 km3 caldera-forming eruptions and subsequent intracaldera lavas and domes: Holocene multi-caldera Ksudach volcano, Karymsky and Kurile Lake-Iliinsky calderas, and Late Pleistocene Maly Semyachik, Akademy Nauk, and Uzon calderas.
    [Show full text]
  • Overview of the Precursors and Dynamics of the 2012-13 Basaltic
    Journal of Volcanology and Geothermal Research 299 (2015) 19–34 Contents lists available at ScienceDirect Journal of Volcanology and Geothermal Research journal homepage: www.elsevier.com/locate/jvolgeores Overview of the precursors and dynamics of the 2012–13 basaltic fissure eruption of Tolbachik Volcano, Kamchatka, Russia Alexander Belousov a,⁎,MarinaBelousovaa,BenjaminEdwardsb, Anna Volynets a, Dmitry Melnikov a a Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky, Russia b Dickinson College, PA, USA article info abstract Article history: We present a broad overview of the 2012–13 flank fissure eruption of Plosky Tolbachik Volcano in the central Received 14 January 2015 Kamchatka Peninsula. The eruption lasted more than nine months and produced approximately 0.55 km3 DRE Accepted 22 April 2015 (volume recalculated to a density of 2.8 g/cm3) of basaltic trachyandesite magma. The 2012–13 eruption of Available online 1 May 2015 Tolbachik is one of the most voluminous historical eruptions of mafic magma at subduction related volcanoes glob- ally, and it is the second largest at Kamchatka. The eruption was preceded by five months of elevated seismicity and Keywords: fl Kamchatka ground in ation, both of which peaked a day before the eruption commenced on 27 November 2012. The batch of – – 2012–13 Tolbachik eruption high-Al magma ascended from depths of 5 10 km; its apical part contained 54 55 wt.% SiO2,andthemainbody – fi Basaltic volcanism 52 53 wt.% SiO2. The eruption started by the opening of a 6 km-long radial ssure on the southwestern slope of Eruption dynamics the volcano that fed multi-vent phreatomagmatic and magmatic explosive activity, as well as intensive effusion Eruption monitoring of lava with an initial discharge of N440 m3/s.
    [Show full text]
  • From Sacred Cow to Cash Cow Muller, Martin
    From sacred cow to cash cow Muller, Martin License: Creative Commons: Attribution-NoDerivs (CC BY-ND) Document Version Publisher's PDF, also known as Version of record Citation for published version (Harvard): Müller, M 2014, 'From sacred cow to cash cow: the shifting political ecologies of protected areas in Russia', Zeitschrift für Wirtschaftsgeographie, vol. 58, no. 2-3, pp. 127-143. Link to publication on Research at Birmingham portal General rights Unless a licence is specified above, all rights (including copyright and moral rights) in this document are retained by the authors and/or the copyright holders. The express permission of the copyright holder must be obtained for any use of this material other than for purposes permitted by law. •Users may freely distribute the URL that is used to identify this publication. •Users may download and/or print one copy of the publication from the University of Birmingham research portal for the purpose of private study or non-commercial research. •User may use extracts from the document in line with the concept of ‘fair dealing’ under the Copyright, Designs and Patents Act 1988 (?) •Users may not further distribute the material nor use it for the purposes of commercial gain. Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.
    [Show full text]
  • The Magma Plumbing System of Bezymianny Volcano: Insights from a 54 Year Time Series of Trace Element Whole-Rock Geochemistry and Amphibole Compositions
    VOLGEO-05044; No of Pages 14 Journal of Volcanology and Geothermal Research xxx (2013) xxx–xxx Contents lists available at SciVerse ScienceDirect Journal of Volcanology and Geothermal Research journal homepage: www.elsevier.com/locate/jvolgeores The magma plumbing system of Bezymianny Volcano: Insights from a 54 year time series of trace element whole-rock geochemistry and amphibole compositions Stephen J. Turner a,⁎, Pavel Izbekov b, Charles Langmuir a a Department of Earth and Planetary Sciences, Harvard University, United States b Geophysical Institute, University of Alaska Fairbanks, United States article info abstract Article history: Samples from 33 individual eruptions of Bezymianny volcano between 1956 and 2010 provide an opportunity Received 12 January 2012 to study in detail the temporal evolution of an arc volcano. Major element and ICP-MS trace element analyses Accepted 21 December 2012 show that the eruptive products shifted progressively from relatively silicic magma in 1956 (~60.4% SiO2)to Available online xxxx more mafic compositions (e.g. 56.8% SiO2 in 2010). Amphibole compositions changed concurrently from low-Al O to high-Al O . Whole rock element-element variation diagrams show tight compositional arrays, Keywords: 2 3 2 3 some with a distinct kink in the late 1970s, which cannot be reproduced by fractionation of a single magma Bezymianny ICPMS along a liquid line of descent. Amphibole thermobarometry indicates amphibole crystallization in two sepa- Trace-element rate reservoirs, one between 200 and 300 MPa, and another between 500 and 750 MPa. Liquid compositions Amphibole calculated from the amphibole analyses show that liquids stored in each reservoir become increasingly mafic Magma-mixing from 1956 to 2010, suggesting that each reservoir received magma inputs from more mafic sources through- out the eruptive cycle.
    [Show full text]
  • Weathering of Volcanic Ash in the Cryogenic Zone of Kamchatka, Eastern Russia
    Clay Minerals, (2014) 49, 195–212 OPEN ACCESS Weathering of volcanic ash in the cryogenic zone of Kamchatka, eastern Russia 1, 2 E. KUZNETSOVA * AND R. MOTENKO 1 SINTEF Building and Infrastructure, Trondheim, NO-7465, Norway, and 2 Lomonosov Moscow State University, Moscow, 119991, Russia (Received 8 August 2012; revised 28 August 2013; Editor: Harry Shaw) ABSTRACT: The nature of the alteration of basaltic, andesitic and rhyolitic glass of Holocene and Pleistocene age and their physical and chemical environments have been investigated in the ash layers within the cryogenic soils associated with the volcanoes in the central depression of Kamchatka. One of the main factors controlling the alteration of the volcanic glass is their initial chemistry with those of andesitic (SiO2 =53À65 wt.%) and basaltic (SiO2 < 53 wt.%) compositions being characterized by the presence of allophane, whereas volcanic glass of rhyolitic composition (SiO2>65 wt.%) are characterized by opal. Variations in the age of eruption of individual ashes, the amount and nature of the soil water, the depth of the active annual freeze-thawing layer, the thermal conductivity of the weathering soils, do not play a controlling role in the type of weathering products of the ashes but may affect their rates of alteration. KEYWORDS: volcanic ash, allophane, opal, unfrozen water, thermal conductivity, permafrost, Kamchatka. The highly active volcanic area of Kamchatka in local and remote eruptions and from the secondary eastern Russia is part of the circum-Pacific belt of re-deposition of ash (Bazanova et al., 2005). andesitic volcanism. It is situated north of the 49th Considerable research has been carried out on the parallel of latitude and is characterized by a weathering of volcanic glass.
    [Show full text]
  • The 2019 Eruption Dynamics and Morphology at Ebeko Volcano Monitored by Unoccupied Aircraft Systems (UAS) and Field Stations
    remote sensing Article The 2019 Eruption Dynamics and Morphology at Ebeko Volcano Monitored by Unoccupied Aircraft Systems (UAS) and Field Stations Thomas R. Walter 1,* , Alexander Belousov 2, Marina Belousova 2, Tatiana Kotenko 2 and Andreas Auer 3 1 Department of Geophysics, GFZ Potsdam, Telegrafenberg, 14473 Potsdam, Germany 2 Institute of Volcanology and Seismology, FED RAS, 683006 Petropavlovsk, Russia; [email protected] (A.B.); [email protected] (M.B.); [email protected] (T.K.) 3 Department of Geoscience, Shimane University, Matsue 690-8504, Japan; [email protected] * Correspondence: [email protected] Received: 20 May 2020; Accepted: 16 June 2020; Published: 18 June 2020 Abstract: Vulcanian explosions are hazardous and are often spontaneous and direct observations are therefore challenging. Ebeko is an active volcano on Paramushir Island, northern Kuril Islands, showing characteristic Vulcanian-type activity. In 2019, we started a comprehensive survey using a combination of field station records and repeated unoccupied aircraft system (UAS) surveys to describe the geomorphological features of the edifice and its evolution during ongoing activity. Seismic data revealed the activity of the volcano and were complemented by monitoring cameras, showing a mean explosion interval of 34 min. Digital terrain data generated from UAS quadcopter photographs allowed for the identification of the dimensions of the craters, a structural architecture and the tephra deposition at cm-scale resolution. The UAS was equipped with a thermal camera, which in combination with the terrain data, allowed it to identify fumaroles, volcano-tectonic structures and vents and generate a catalog of 282 thermal spots. The data provide details on a nested crater complex, aligned NNE-SSW, erupting on the northern rim of the former North Crater.
    [Show full text]
  • Thermal Remote Sensing Reveals Communication Between
    www.nature.com/scientificreports OPEN Thermal remote sensing reveals communication between volcanoes of the Klyuchevskoy Volcanic Group Diego Coppola1,2*, Marco Laiolo1,2, Francesco Massimetti1,3, Sebastian Hainzl3, Alina V. Shevchenko3,4, René Mania3, Nikolai M. Shapiro5,6 & Thomas R. Walter3 Volcanoes are traditionally considered isolated with an activity that is mostly independent of the surrounding, with few eruptions only (< 2%) associated with a tectonic earthquake trigger. Evidence is now increasing that volcanoes forming clusters of eruptive centers may simultaneously erupt, show unrest, or even shut-down activity. Using infrared satellite data, we detail 20 years of eruptive activity (2000–2020) at Klyuchevskoy, Bezymianny, and Tolbachik, the three active volcanoes of the Klyuchevskoy Volcanic Group (KVG), Kamchatka. We show that the neighboring volcanoes exhibit multiple and reciprocal interactions on diferent timescales that unravel the magmatic system’s complexity below the KVG. Klyuchevskoy and Bezymianny volcanoes show correlated activity with time-predictable and quasiperiodic behaviors, respectively. This is consistent with magma accumulation and discharge dynamics at both volcanoes, typical of steady-state volcanism. However, Tolbachik volcano can interrupt this steady-state regime and modify the magma output rate of its neighbors for several years. We suggest that below the KVG the transfer of magma at crustal level is modulated by the presence of three distinct but hydraulically connected plumbing systems. Similar complex interactions may occur at other volcanic groups and must be considered to evaluate the hazard of grouped volcanoes. Closely located or clustered volcanoes may become conjointly active and are hence considered especially haz- ardous, yet robust evidence for their connectivity remains sparse.
    [Show full text]