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Io Hot Spot Distribution Detected by Juno/JIRAM

Journal
Date Issued
2023
Author(s)
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Lopes, R.M.C.
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Rathbun, J.
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Agostini, L.
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Plainaki, C.
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Sindoni, G.
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Brooks, S.
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Hansen-Koharcheck, C.
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Bolton, S.
DOI
Abstract
In this work, we present the most updated catalog of Io hot spots based on Juno/JIRAM data. We find 242 hot spots, including 23 previously undetected. Over the half of the new hot spots identified, are located at high northern and southern latitudes (>70°). We observe a latitudinal variability and a larger concentration of hot spots in the polar regions, in particular in the North. The comparison between JIRAM and the most recent Io hot spot catalogs listing power output (Veeder et al., 2015, https://doi.org/10.1016/j.icarus.2014.07.028; de Kleer, de Pater, et al., 2019, https://doi.org/10.3847/1538-3881/ab2380), shows JIRAM detected 63% and 88% of the total number of hot spots, respectively. Furthermore, JIRAM observed 16 of the 34 faint hot spots previously identified. JIRAM data revealed thermal emission from 5 dark pateræ inferred to be active from color ratio images, thus confirming that these are hot spots.
Volume
50
Issue
1
Uri
Url
Issn Identifier
0094-8276
Ads BibCode
2023GeoRL..5000597Z
Rights
open.access
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