Monitoring of the 2015 Villarrica Volcano Eruption by Means of DLR's Experimental TET-1 Satellite

Villarrica Volcano is one of the most active volcanoes in the South Andes Volcanic Zone. This article presents the results of a monitoring of the time before and after the 3 March 2015 eruption by analyzing nine satellite images acquired by the Technology Experiment Carrier-1 (TET-1), a small experimental German Aerospace Center (DLR) satellite. An atmospheric correction of the TET-1 data is presented, based on the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Emissivity Database (GDEM) and Moderate Resolution Imaging Spectroradiometer (MODIS) water vapor data with the shortest temporal baseline to the TET-1 acquisitions. Next, the temperature, area coverage, and radiant power of the detected thermal hotspots were derived at subpixel level and compared with observations derived from MODIS and Visible Infrared Imaging Radiometer Suite (VIIRS) data. Thermal anomalies were detected nine days before the eruption. After the decrease of the radiant power following the 3 March 2015 eruption, a stronger increase of the radiant power was observed on 25 April 2015. In addition, we show that the eruption-related ash coverage of the glacier at Villarrica Volcano could clearly be detected in TET-1 imagery. Landsat-8 imagery was analyzed for comparison. The information extracted from the TET-1 thermal data is thought be used in future to support and complement ground-based observations of active volcanoes.

[1]  Daniel Schläpfer,et al.  Solar Influence on Fire Radiative Power Retrieved With the Bispectral Method , 2019, IEEE Transactions on Geoscience and Remote Sensing.

[2]  Gregoire Kerr,et al.  Data Validation and Case Studies using the TET-1 Thermal Infrared Satellite System , 2015 .

[3]  S. Carn,et al.  Surge in sulphur and halogen degassing from Ambrym volcano, Vanuatu , 2009 .

[4]  Diego Coppola,et al.  The 2008 “silent” eruption of Nevados de Chillán (Chile) detected from space: Effusive rates and trends from the MIROVA system , 2016 .

[5]  A. Harris,et al.  Automated volcanic eruption detection using MODIS , 2001 .

[6]  Clive Oppenheimer,et al.  Mass flux measurements at active lava lakes: Implications for magma recycling , 1999 .

[7]  J. Salisbury,et al.  Emissivity of terrestrial materials in the 3–5 μm atmospheric window☆ , 1992 .

[8]  M. Patrick,et al.  Shallowly driven fluctuations in lava lake outgassing (gas pistoning), Kīlauea Volcano , 2016 .

[9]  R. Campion.  New lava lake at Nyamuragira volcano revealed by combined ASTER and OMI SO2 measurements , 2014 .

[10]  A. Rivera,et al.  Recent glacier variations on active ice capped volcanoes in the Southern Volcanic Zone (37°-46°S), Chilean Andes , 2013 .

[11]  C. Del Negro,et al.  Thermal insights into the dynamics of Nyiragongo lava lake from ground and satellite measurements , 2013 .

[12]  A. Harris,et al.  Lava effusion rate definition and measurement: a review , 2007 .

[13]  A. Harris,et al.  Effusive crises at Piton de la Fournaise 2014–2015: a review of a multi-national response model , 2017, Journal of Applied Volcanology.

[14]  C. Oppenheimer,et al.  Ground-based thermal imaging of lava lakes at Erebus volcano, Antarctica , 2008 .

[15]  A. Harris,et al.  Lava discharge rates from satellite‐measured heat flux , 2009 .

[16]  M. Ripepe,et al.  Birth of a lava lake: Nyamulagira volcano 2011–2015 , 2016, Bulletin of Volcanology.

[17]  A. Harris.  Thermal Remote Sensing of Active Volcanoes: A User's Manual , 2013 .

[18]  D. Coppola,et al.  Tracking Formation of a Lava Lake From Ground and Space: Masaya Volcano (Nicaragua), 2014–2017 , 2018 .

[19]  Visible Infrared Imaging Radiometer Suite ( VIIRS ) 375 m Active Fire Detection and Characterization Algorithm Theoretical Basis Document , 2022 .

[20]  C. Justice,et al.  Evaluation of global fire detection algorithms using simulated AVHRR infrared data , 1999 .

[21]  M. Ripepe,et al.  Monochromatic infrasonic tremor driven by persistent degassing and convection at Villarrica Volcano, Chile , 2010 .

[22]  Klemen Zaksek,et al.  Satellite and Ground Based Thermal Observation of the 2014 Effusive Eruption at Stromboli Volcano , 2015, Remote. Sens..

[23]  José Luis Palma,et al.  Lahar infrasound associated with Volcán Villarrica's 3 March 2015 eruption , 2015 .

[24]  S. Carn,et al.  Risk evaluation, detection and simulation during effusive eruption disasters , 2016, Special Publications.

[25]  Matthew Blackett,et al.  Early Analysis of Landsat-8 Thermal Infrared Sensor Imagery of Volcanic Activity , 2014, Remote. Sens..

[26]  G. Roberts,et al.  Spaceborne detection and characterization of fires during the bi-spectral infrared detection (BIRD) experimental small satellite mission (2001–2004) , 2006 .

[27]  M. Ripepe,et al.  Enhanced volcanic hot-spot detection using MODIS IR data: results from the MIROVA system , 2015, Special Publications.

[28]  C. Oppenheimer,et al.  Magmatic degassing at Erta 'Ale volcano, Ethiopia , 2008 .

[29]  Sarah Asam,et al.  Firebird― Small Satellites for Wild Fire Assessment , 2018, IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium.

[30]  J. Johnson,et al.  Monotonic infrasound and Helmholtz resonance at Volcan Villarrica (Chile) , 2011 .

[31]  Matthieu Kervyn,et al.  Thermal remote sensing of the low‐intensity carbonatite volcanism of Oldoinyo Lengai, Tanzania , 2008 .

[32]  Matthew Blackett,et al.  An Overview of Infrared Remote Sensing of Volcanic Activity , 2017, J. Imaging.

[33]  Hiroshi Shinohara,et al.  Volcanic gases emitted during mild Strombolian activity of Villarrica volcano, Chile , 2005 .

[34]  P. Delmelle,et al.  Volatile degassing, petrology, and magma dynamics of the Villarrica Lava Lake, Southern Chile , 2004 .

[35]  D. Rothery,et al.  Correlations between SO2 flux, seismicity, and outgassing activity at the open vent of Villarrica volcano, Chile , 2008 .

[36]  Manuel Moussallam,et al.  Sustaining persistent lava lakes: Observations from high-resolution gas measurements at Villarrica volcano, Chile , 2016 .

[37]  E. P. McClam,et al.  A Method for Satellite Identification of Surface Temperature Fields of Subpixel Resolution , 2002 .

[38]  H. Rymer,et al.  Pit crater structure and processes governing persistent activity at Masaya Volcano, Nicaragua , 1998 .

[39]  M. Liuzzo,et al.  A CO2‐gas precursor to the March 2015 Villarrica volcano eruption , 2017 .