Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55
We report volcanic changes on Io since the last Galileo (2002) and New Horizons (2007) flybys as observed by NASA’s Juno spacecraft, examining Io’s volcanism down to the local scale (<10 km pixel ^−1 ). From 3428 Jovian Infrared Auroral Mapper image frames obtained between 2017 March 21 (PJ5) and...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Planetary Science Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/PSJ/adbae3 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849738143121539072 |
|---|---|
| author | Jason E. Perry Ashley Gerard Davies David A. Williams David M. Nelson |
| author_facet | Jason E. Perry Ashley Gerard Davies David A. Williams David M. Nelson |
| author_sort | Jason E. Perry |
| collection | DOAJ |
| description | We report volcanic changes on Io since the last Galileo (2002) and New Horizons (2007) flybys as observed by NASA’s Juno spacecraft, examining Io’s volcanism down to the local scale (<10 km pixel ^−1 ). From 3428 Jovian Infrared Auroral Mapper image frames obtained between 2017 March 21 (PJ5) and 2023 October 15 (PJ55), a catalog of 2305 hot spot detections with temperatures >200 K at 325 individual sites of volcanic activity has been generated. Where possible, hot spot color temperature, emitting area, and power output are calculated. Some prominent areas of volcanic activity first identified or better resolved in Juno data (Tonatiuh, Lei-Kung Fluctus, Volund, Guaraci Fluctus, Seth Patera, and others) are described. We examined their appearance, volcanological and geological settings, observed thermal emission, and evolving behavior, and quantified the changes that have taken place. Volcanic activity at Tonatiuh and Guaraci Fluctus, the sites of newly imaged lava flows, are examined in detail. At Tonatiuh, JunoCam data provide important context; at Guaraci Fluctus, the combination of data from multiple assets yields a comprehensive understanding of the evolution of a specific eruption episode. We further examine different types of active paterae, some possibly containing lava lakes. A group of bright eruptions are identified whose spatial and temporal locations suggest regional clustering. Our estimates of volcanic thermal emission are broadly consistent with previous analyses of spacecraft data. All derived products are available from the Io Geographical Information System database at Arizona State University. Appendix A contains newly approved feature names. |
| format | Article |
| id | doaj-art-0f1540aed26948c8a402a46a06aabd0d |
| institution | DOAJ |
| issn | 2632-3338 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Planetary Science Journal |
| spelling | doaj-art-0f1540aed26948c8a402a46a06aabd0d2025-08-20T03:06:43ZengIOP PublishingThe Planetary Science Journal2632-33382025-01-01648410.3847/PSJ/adbae3Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55Jason E. Perry0https://orcid.org/0000-0002-6802-7889Ashley Gerard Davies1https://orcid.org/0000-0003-1747-8142David A. Williams2https://orcid.org/0000-0002-7930-9347David M. Nelson3https://orcid.org/0000-0001-9773-2651Lunar and Planetary Laboratory, University of Arizona , 1629 E University Boulevard, Tucson, AZ 85721, USA ; jeperry1@arizona.eduJet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USA ; Ashley.Davies@jpl.nasa.govArizona State University , Tempe, AZ, USA ; David.Williams@asu.edu, nelson99@asu.eduArizona State University , Tempe, AZ, USA ; David.Williams@asu.edu, nelson99@asu.eduWe report volcanic changes on Io since the last Galileo (2002) and New Horizons (2007) flybys as observed by NASA’s Juno spacecraft, examining Io’s volcanism down to the local scale (<10 km pixel ^−1 ). From 3428 Jovian Infrared Auroral Mapper image frames obtained between 2017 March 21 (PJ5) and 2023 October 15 (PJ55), a catalog of 2305 hot spot detections with temperatures >200 K at 325 individual sites of volcanic activity has been generated. Where possible, hot spot color temperature, emitting area, and power output are calculated. Some prominent areas of volcanic activity first identified or better resolved in Juno data (Tonatiuh, Lei-Kung Fluctus, Volund, Guaraci Fluctus, Seth Patera, and others) are described. We examined their appearance, volcanological and geological settings, observed thermal emission, and evolving behavior, and quantified the changes that have taken place. Volcanic activity at Tonatiuh and Guaraci Fluctus, the sites of newly imaged lava flows, are examined in detail. At Tonatiuh, JunoCam data provide important context; at Guaraci Fluctus, the combination of data from multiple assets yields a comprehensive understanding of the evolution of a specific eruption episode. We further examine different types of active paterae, some possibly containing lava lakes. A group of bright eruptions are identified whose spatial and temporal locations suggest regional clustering. Our estimates of volcanic thermal emission are broadly consistent with previous analyses of spacecraft data. All derived products are available from the Io Geographical Information System database at Arizona State University. Appendix A contains newly approved feature names.https://doi.org/10.3847/PSJ/adbae3IoGalilean satellitesVolcanism |
| spellingShingle | Jason E. Perry Ashley Gerard Davies David A. Williams David M. Nelson Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55 The Planetary Science Journal Io Galilean satellites Volcanism |
| title | Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55 |
| title_full | Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55 |
| title_fullStr | Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55 |
| title_full_unstemmed | Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55 |
| title_short | Hot Spot Detections and Volcanic Changes on Io during the Juno Epoch: Orbits PJ5 to PJ55 |
| title_sort | hot spot detections and volcanic changes on io during the juno epoch orbits pj5 to pj55 |
| topic | Io Galilean satellites Volcanism |
| url | https://doi.org/10.3847/PSJ/adbae3 |
| work_keys_str_mv | AT jasoneperry hotspotdetectionsandvolcanicchangesonioduringthejunoepochorbitspj5topj55 AT ashleygerarddavies hotspotdetectionsandvolcanicchangesonioduringthejunoepochorbitspj5topj55 AT davidawilliams hotspotdetectionsandvolcanicchangesonioduringthejunoepochorbitspj5topj55 AT davidmnelson hotspotdetectionsandvolcanicchangesonioduringthejunoepochorbitspj5topj55 |