Back to Search
Start Over
Crustal deformation and lava flow associated with the 2022 Mauna Loa (Hawaii) volcanic eruption using interferometric and polarimetric analysis of EOS-04 and Sentinel-1 SAR data.
- Source :
-
Current Science (00113891) . 5/10/2024, Vol. 126 Issue 9, p1102-1108. 7p. - Publication Year :
- 2024
-
Abstract
- Mauna Loa volcano (Hawaii) is the world’s largest subaerial volcano. Interferometric analysis of ISRO’s EOS-04 and ESA’s Sentinel-1 SAR images provided a detailed view on the surface deformation associated with the 2022 Mauna Loa volcano eruption. Co-eruptive InSAR analysis of Sentinel-1 data revealed Line-ofSight deformation of ±50 cm along the NE and SW rift zones. The complex bipolar deformation pattern in ascending and descending tracks suggests vertical and horizontal deformation associated with the sub-surface magma ascent and spreading respectively. InSAR analysis of EOS-04 data revealed concentric interferometric fringes east of the caldera. This near-circular deformation lobe (~ –13 cm) could be interpreted either as post-eruptive volcanic deflation or topographically correlated atmospheric artefact. Polarimetric and coherence based analysis revealed extensive lava flow along the SW and NE rifts (~15 km) and further towards the north along a topographic channel for about 16 km. Polarimetric radar analysis of a fresh lava flow channel associated with the NE rift zone revealed a transition between smooth pāhoehoe and rough a’a flow textures along its current extent. The present study demonstrates the interferometric and polarimetric capabilities of EOS-04 satellite for geophysical applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00113891
- Volume :
- 126
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Current Science (00113891)
- Publication Type :
- Academic Journal
- Accession number :
- 177206517
- Full Text :
- https://doi.org/10.18520/cs/v126/i9/1102-1108