Figure 1. The GEO-URP automated processing workflow used to retrieve and analyze geostationary TIR data.
Figure 2. An example of the results of the spatiotemporal low pass filtering algorithms on the unprocessed geostationary TIR data.
This allows an accurate calculate of the temperature above background trend and radiant heat flux (also known as radiant power). Timeseries analyses are then conducted to evaluate precursory and changing eruption activity.
The entire process from the initial trigger to timeseries analysis takes less than 5 days. However, after a volcanic eruption has been initially integrated into the system it is updated daily until the activity has subsided. This enables near real-time monitoring, modeling, and forecasting of lava and ash/SO2 plumes at high temporal resolution (e.g., Thompson et al., 2022).
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Girona, T., Realmuto, V., Lundgren, P., 2021. Large-scale thermal unrest of volcanoes for years prior to eruption. Nat. Geosci. 14, 238–241.
Ramsey, M. S., 2016, Synergistic use of satellite thermal detection and science: a decadal perspective using ASTER, Geological Society, London, Special Publications, 426 (1), 115-136.
Ramsey, M.S. and Flynn, I.T.W., 2020, The spatial and spectral resolution of ASTER infrared image data: A paradigm shift in volcanological remote sensing, Rem. Sens., 12, 738.
Thompson, J.O., Contreras-Arratia, R., Befus, K.S. and Ramsey, M.S., 2022. Thermal and seismic precursors to the explosive eruption at La Soufrière Volcano, St. Vincent in April 2021. EPSL, 592, 117621.
Williams, D.B. and Ramsey, M.S., 2022. Analysis of ash emissions from the 2020 Nishinoshima eruption using ASTER thermal infrared orbital data, Journal of Volcanology and Geothermal Research, 421.
Ramsey, M.S., Thompson, J.O., Leggett, T.N., Corradino C., 2021. Does data volume equate to better eruption forecasts? (invited), AGU Fall Meeting Abstracts, abs. V33C-01.
Realmuto, V.J., Prata, A.T., Ramsey, M.S., 2022. Combining geostationary and polar-orbiting observations of volcanic SO2 plumes: A case study from the June 2019 eruption of Raikoke Volcano, AGU Fall Mtg.
Thompson, J., Ramsey, M., Contreras-Arratia, R., 2021. Big pixel volcanic thermal activity, AGU Fall Meeting Abstracts, abs. A31B-05.
Thompson, J.O., Williams, D.B.*, Ramsey, M.S., Realmuto, V.J., 2022. Characterizing precursory volcanic activity using geostationary thermal infrared data, AGU Fall Mtg.
Williams, D.B., Ramsey, M.S., Thompson, J.O., 2021. Multiscale analysis of ash- and water-rich volcanic plumes using linear spectral deconvolution modeling, AGU Fall Meeting Abstracts, abs. V35E-0181.
Williams, D.B., Thompson, J.O., Ramsey, M.S., 2022. Modeling the composition and particle size distribution of the Hunga Tonga-Hunga Ha'apai ash plume using thermal infrared spectroscopy, AGU Fall Mtg.