Comment on acp-2022-772 DOI Creative Commons
Isabelle A. Taylor, R. G. Grainger, Andrew T. Prata

et al.

Published: Dec. 11, 2022

Abstract. Satellite instruments play a valuable role in detecting, monitoring and characterising emissions of ash gas into the atmosphere during volcanic eruptions. Plumes sulfur dioxide (SO2) from April 2021 eruption La Soufrière volcano on St Vincent Eastern Caribbean were observed by multiple satellite instruments. This study looks at these plumes with two instruments: Advanced Baseline Imager (ABI) Geostationary Operational Environmental (GOES), Infrared Atmospheric Sounding Interferometer (IASI) MetOp platforms. Using true false colour images, brightness temperature difference images produced ABI data, minimum 32 eruptive events identified. The used to determine approximate start end times character each event. In this way has been divided four phases: (1) an initial explosive event, (2) sustained event lasting over nine hours, (3) pulsatory phase 23 54 hour period (4) waning sequence events. IASI instrument was dispersion SO2 eruption. results showed highly complex structure plume, terms column amounts height, which is likely linked shown have largely emitted between 13 19 km. primarily upper troposphere around height tropopause, but some emission stratosphere. transported globe parts plume reaching as far 45° S N. largest atmospheric burden measured 0.31±0.09 Tg, recorded (descending orbits). masses converted fluxes. flux peak 10 then decrease time. By summing results, it estimated that total 0.57±0.44 Tg atmosphere. However, due limitations associated retrieval should be considered estimate mass emitted. An average e-folding time 7.09±5.70 days computed based results: similar other tropical eruptions magnitude. There are number similarities 1979 Soufrière. For example, both consisted series varied heights including highlight importance studying prepared for future activity.

Language: Английский

Rapid pre-explosion increase in dome extrusion rate at La Soufrière, St. Vincent quantified from synthetic aperture radar backscatter DOI Creative Commons
E. W. Dualeh, S. K. Ebmeier, Tim Wright

et al.

Earth and Planetary Science Letters, Journal Year: 2023, Volume and Issue: 603, P. 117980 - 117980

Published: Jan. 13, 2023

The extrusion rate of a lava dome is critical parameter for monitoring silicic eruptions and forecasting their development. Satellite radar backscatter can provide unique information about growth during volcanic eruption when other datasets (e.g., optical, thermal, ground-based measurements, etc.) may be limited. Here, we present an approach estimating topography from individual images. Using data multiple SAR sensors apply the method to 2021 at La Soufrière, St. Vincent. We measure average 1.8 m3s−1 between December 2020 March before acceleration in 17.5 2 days prior explosive on 9 April 2021. estimate final volume 19.4 million m3, extrapolated sensors, with approximately 15% total extruded emplaced last days. A possible explanation could combined emptying conduit reservoir older material ascent gas-rich magma

Language: Английский

Citations

15
Heat transport process associated with the 2021 eruption of Aso volcano revealed by thermal and gas monitoring DOI Creative Commons
Shohei Narita, Akihiko Yokoo, Takahiro Ohkura

et al.

Earth Planets and Space, Journal Year: 2024, Volume and Issue: 76(1)

Published: April 30, 2024

Abstract The thermal activity of a magmatic–hydrothermal system commonly changes at various stages volcanic activity. Few studies have provided an entire picture the such over eruptive cycle, which is essential for understanding subsurface heat transport process that culminates in eruption. This study quantitatively evaluated sequence associated with two phreatic eruptions 2021 Aso volcano. We estimated plume-laden discharge rates and corresponding H 2 O flux during 2020–2022 by using simple methods. then validated comparison gas monitoring results. Our results showed rate varied substantially throughout cycle. During pre-eruptive quiescent period (June 2020–May 2021), anomalously large (300–800 MW) were observed likely due to enhanced magma convection degassing. run-up (June–October there was no evident change (300–500 MW), but this accompanied simultaneous pressurization heating underlying hydrothermal system. These signals imply progress partial sealing In co-eruptive period, subsequent supply from magmatic region resulted additional pressurization, led first eruption (October 14, 2021). peaked (2000–4000 day before second 19, sustained chamber eventually more explosive post-eruptive (~ 1000 continued four months, finally returned background level (< 300 early March 2022. Despite models, we tracked transient revealed processes Graphical abstract

Language: Английский

Citations

3
Study of geothermal and volcanic activity at Mount Awu, the deadliest active volcano in North Sulawesi Province, Indonesia using Optical Satellite Imagery DOI
Bondan Galih Dewanto,

Heryadi Rachmat,

Estu Kriswati

et al.

Journal of Volcanology and Geothermal Research, Journal Year: 2023, Volume and Issue: 438, P. 107811 - 107811

Published: April 26, 2023

Language: Английский

Citations

8
Monitoring the Mauna Loa (Hawaii) eruption of November–December 2022 from space: Results from GOES-R, Sentinel-2 and Landsat-8/9 observations DOI Creative Commons
Nicola Genzano, Francesco Marchese, Simon Plank

et al.

International Journal of Applied Earth Observation and Geoinformation, Journal Year: 2023, Volume and Issue: 122, P. 103388 - 103388

Published: June 16, 2023

Mauna Loa, one of the most actives volcanoes on Earth, is a shield volcano, located Island Hawaii (USA). On 27 November 2022, after about 38 years quiescence, new eruptive activity took place at Moku'āweoweo caldera, continuing in following days (i.e. until 10 December) from fissure vents opening Northeast Rift Zone. In this work, we investigate Loa − December 2022 eruption space, integrating information different satellite sensors. The analysis short-wave infrared (SWIR) data, min temporal resolution, Advanced Baseline Imager (ABI), aboard Geostationary Operational Environmental Satellites R series (GOES-R), performed through Normalised Hotspot Indices (NHI), indicates that started between 23:10–23:20 LT (28 09:10–09:20 UTC). same shows increase thermal and its progressive reduction early morning 28 November, agreement with migration summit caldera to By analysing second phase SWIR data Multispectral Instrument (MSI) Land (OLI), respectively Sentinel-2 Landsat 8/9 satellites, estimated maximum lava flow length 17 km. Moreover, retrieved values volcanic radiative power (VRP) up 65 GW, time-averaged discharge rate (TADR) ∼1000 (±500) m3/s. These results show observations, spatial may give an important contribution monitoring, mapping characterisation intense effusions.

Language: Английский

Citations

7
Tracking seismicity in an underfunded institution: The case of La Soufrière St Vincent volcanic eruption 2020–2021 DOI
Rodrigo Contreras‐Arratia, Bernard Chouet, Corentin Caudron

et al.

Journal of Volcanology and Geothermal Research, Journal Year: 2024, Volume and Issue: 446, P. 107990 - 107990

Published: Jan. 1, 2024

Language: Английский

Citations

2
Infrared spectroscopy of volcanoes: from laboratory to orbital scale DOI Creative Commons
Daniel B. Williams, M. S. Ramsey

Frontiers in Earth Science, Journal Year: 2024, Volume and Issue: 12

Published: Jan. 24, 2024

Understanding the composition, texture, and morphology of volcanic rocks that have erupted at surface better constrains eruption style is vital to infer subsurface processes, development magma upon ascent, potential for future eruptions. The reflectance emission spectroscopy these rocks, collected from near-infrared (NIR) through thermal infrared (TIR) portion electromagnetic (EM) spectrum, provides data necessary retrieve micron-scale roughness, particle size. Remote imaging systems enable analyses active volcanoes in remote regions, where sample collection laboratory analysis poses a significant challenge. Laboratory hyperspectral samples acquired deposits are easily resampled spectral resolution any sensor provide means estimating composition their products worldwide, as well those on other planetary bodies such Moon Mars. In this review paper, we an overview current use tool volcanology, including ground-based acquire unprecedented detail serve testbeds new orbital concepts. We also discuss impact satellite missions will volcano science spectral, spatial, temporal resolutions improve.

Language: Английский

Citations

2
Monitoring the Thermal Activity of Kamchatkan Volcanoes during 2015–2022 Using Remote Sensing DOI Creative Commons
О.А. Гирина,

Alexander Manevich,

Е.А. Loupian

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(19), P. 4775 - 4775

Published: Sept. 30, 2023

The powerful explosive eruptions with large volumes of volcanic ash pose a great danger to the population and jet aircraft. Global experience in monitoring volcanoes observing changes parameters their thermal anomalies is successfully used analyze activity predict population. Kamchatka Peninsula Russia, its 30 active volcanoes, one most volcanically regions world. article considers 2015–2022 Klyuchevskoy, Sheveluch, Bezymianny, Karymsky whose rock composition varies from basaltic andesite dacite. This study based on analysis Value Temperature Difference between Anomaly Background (the VTDAB), obtained by manual processing AVHRR, MODIS, VIIRS, MSU-MR satellite data VolSatView information system. Based VTDAB data, following “background volcanoes” was determined: 20 °C for Sheveluch 12 13–15 Karymsky. showed that highest temperature anomaly corresponds juvenile magmatic material arrived earth’s surface. different each volcano; it depends eruptive products produced volcano character an eruption. A joint dynamics eruption made possible determine range phases

Language: Английский

Citations

6
TIRVolcH: Thermal Infrared Recognition of Volcanic Hotspots. A single band TIR-based algorithm to detect low-to-high thermal anomalies in volcanic regions. DOI Creative Commons
S. Aveni, Marco Laiolo, Adele Campus

et al.

Remote Sensing of Environment, Journal Year: 2024, Volume and Issue: 315, P. 114388 - 114388

Published: Oct. 3, 2024

Language: Английский

Citations

1
Growth and evolution of the lava dome and coulée during the 2020–21 eruption of La Soufrière, St Vincent DOI Creative Commons
A. Stinton

Geological Society London Special Publications, Journal Year: 2023, Volume and Issue: 539(1), P. 25 - 39

Published: March 30, 2023

Abstract The 2020–21 eruption of La Soufrière, St Vincent consisted two distinct phases. initial, effusive phase was characterized by the extrusion a small lava dome inside 1.5 km wide Summit Crater, and followed violent explosive phase. Growth evolution monitored visual observations photogrammetry using imagery acquired from fixed-wing aircraft, helicopters consumer-grade unmanned aerial vehicles. Additional monitoring provided satellite multispectral radar imagery. Following emergence at surface on 27 December 2020, volume growth rate calculations showed occurred steady c . 1.8 m 3 s −1 16–19 × 10 6 extruded. initial near-perfect hemispherical transitioned into with more elliptical footprint, eventually, evolving coulée-like feature lobes. destroyed onset activity 9 April 2021.

Language: Английский

Citations

3
La Soufrière volcano, St Vincent, eruption 2020–21: assessing unrest and eruptive states from limited volcano-seismic data DOI Creative Commons
Joan L. Latchman, Willy Aspinall

Geological Society London Special Publications, Journal Year: 2023, Volume and Issue: 539(1), P. 267 - 289

Published: April 3, 2023

Abstract Following a month of unrest in June–July 2019 and 3 months effusive activity from late December 2020 to March 2021, La Soufrière volcano, St Vincent, transitioned 2-week period explosions on 9 April 2021. During initial unrest, there was one working seismograph station the providing only information for tracking fluctuations seismicity. Subsequently, full capability locating volcanic earthquakes achieved 27 January Because events prior this did not have reliable locations, unconventional data approaches were adopted assessing evolution. Holistic inferences, suggested by combining these novel analyses with decades knowledge Lesser Antilles volcanoes, provided punctual evidential support possibility that could culminate explosive activity. However, case history is offered as paradigm minimalist seismic monitoring at active notwithstanding gains possible. This said, evaluations moment release, using event duration magnitudes proxies magnitudes, allowed magma volume intruded or activated volcano be estimated: 68 ± 14 × 10 6 m dense rock equivalent (DRE) magma; value remarkably similar geological estimate total erupted (71 DRE), matching uncertainties.

Language: Английский

Citations

3