NASA Earth Science Disasters Program

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August 7, 2018
Fig. 2: Both GNSS and teleseismic waves (black) are used to model (red) the earthquake.
Earthquake epicenter (red star) and teleseismic stations (black triangles). Fig. 2: Both GNSS and teleseismic waves (black) are used to model (red) the earthquake. Fig. 3: Predicted...
April 20, 2018
Ozone Monitoring Instrument (OMI) on EOS Aura satellite measures ~0.12 Tg  SO2 emission from Aoba (Vanuatu) volcanic eruption
This volcanic SO2 plume data from the Aoba volcano (Vanuatu) explosive eruption on April 5 2018 was retrieved using the Ozone monitoring Instrument (OMI) operational Principal Component Analysis (PCA) algorithm (OMSO2) on April 6. Volcanic SO2 measured by satellite UV sensors allows tracking fast movements of volcanic ash clouds , which present hazard to aviation. In large explosive eruptions volcanic SO2 can be injected directly into lower stratosphere where it...