AMap of Mauna Loa summit and upper Northeast Rift Zone (Island of Hawai‘i on inset map) with 2022 lava flow field78(pink), lava flows since CE 184379,80(dark gray), 1000 ft (~305 m) contours (brown lines), samples (black dots; green for large-volume tephra samples used for m...
Kim et al.23 introduced a waveform inversion method to calculate VER at Tungurahua volcano (Ecuador) based on the Green’s Function solution to the inhomogeneous Helmoltz wave equation in a half-space; the method, based on the representation of the acoustic pressure wavefield as a combination ...
Let’s make some RGB (AKA “true color”) composites to get an idea of what’s going on. These will be heavily affected by the clouds andvogbut are good for visual inspection and getting our bearings. Generating composites withxlandsatis easy and by default it will use the red, green,...
(B) Fine-scale laminations within the 13 Aug raft (grey) are present and aligned with the radial water waves (yellow arrows) and ocean swell (green arrows). (C) Red arrows show the sharp contrast between an oval feature that we interpret to be a raft and slightly older and more ...
We compute the Green's functions numerically using a 3-D FDTD code utilizing GPU acceleration (Kim and Lees, 2014). Fig. 2 shows the results of the numerical modeling at 4.8 s after an explosive source is simulated in Showa Crater. This figure is an example “snapshot” of the modeled ...
(green). Correlations with other eruptions are labeled by year of eruption and corresponding volcano color. Vertical offset is for distinction only. Median, 70th and 90th percentiles are shown as increasingly darker gray vertical bars.d–fStatistical multi-testing and cross-validation of archetypes ...
Solar eruptions are spectacular magnetic explosions in the Sun’s corona, and how they are initiated remains unclear. Prevailing theories often rely on special magnetic topologies that may not generally exist in the pre-eruption source region of corona.
Two additional volcanic events identified at 1586 BCE (Greenland) and 1550 BCE (Antarctica) are not shown as they are currently considered less likely for Thera based on tephra / hemispheric deposition evidence31, but should be further investigated. The sulfate at c.1538 BCE is not as securely...
Field lines closed (opening) in the box are coloured black (green), while those becoming open from the closed during the eruption are coloured red. (c) Side view of the magnetic field lines from south (that is, the horizontal and vertical axes are x and z, respectively). The background...
a–c Show composite difference images in three Atmospheric Imaging Assembly (AIA) passbands, 171 (blue), 211 (green), and 131 Å (red). d, e Show the evolution of the eruptive structure as seen through the virtual slits S5 and S6 indicated in c. Linear fittings give the projected ...