Changes in Satellite signatures at 1.6 µm near Mauna Loa
Consider the animations of GOES West 1.61 µm imagery over Mauna Loa on 7 December (above) and 8 December (below). The bright area in the 1.61 µm show regions where very hot lava is emitting detectable amounts of near-infrared radiation. The area of those hot regions has decreased between 7 and 8 December. These images were captured from the CSPP Geosphere site.
For current information on the current eruption of Mauna Loa, refer to this USGS website. The SSEC/CIMSS volcano website also includes information on Mauna Loa, including thermal monitoring of the site.