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February 3, 2023—Kīlauea summit eruption reference map

February 3, 2023
Color map of eruption at summit of volcano
This reference map depicts the Kīlauea summit eruption on February 3, 2023. Recent HVO helicopter overflights have been unable to produce accurate structure-from-motion models of the Halema‘uma‘u crater floor due to the thick volcanic gas plume; for this reason, no updated statistics can be provided for the average crater floor elevation or the erupted lava volume. Since thermal images can see through the plume, updated eruptive features were digitized from thermal images captured during the HVO overflight on February 2. The extent of the active lava lake—the area in red—is 26 acres (11 hectares). The full extent of new lava from this eruption, totaling both the active lava lake (red) and flows that have crusted over (pink), is 294 acres (119 hectares). Also included here are west to east topographic profiles across the caldera. Profiles are provided for the periods before the 2018 caldera collapse (orange), shortly after the 2018 collapse (gray), the December 2020–May 2021 eruption (brown), the September 2021–December 2022 eruption (red), and the current eruption (pink) as last modelled from the HVO overflight on January 17. Also shown is the maximum depth of the 2019–20 Halema‘uma‘u water lake (blue). 
Title February 3, 2023—Kīlauea summit eruption reference map
Record Source USGS Publications Warehouse