em>TOP PHOTO: The black unit in the foreground is the 1903 fissure vents and flows from the Southwest Rift Zone of Mauna Loa. Moving clockwise around the photo, the adjacent set of hills are the 1926 spatter ramparts. Above the 1926 ramparts, the dark colored hills (red interior) are vents for the 1919 ‘Ālika flow. In the middle of the image, the dark flows and those far afield are all from the 1950 eruption of Mauna Loa. The mountain barely visible in the far background is Hualālai.
(BIVN) – Mauna Loa Volcano is not erupting, and scientists with the USGS Hawaiian Volcano Observatory say rates of deformation and seismicity persist above long-term background levels.
On November 15, scientists took to the skies above the world’s largest volcano and returned with several new photos of Mauna Loa’s summit caldera.
According to a November 22 update on Mauna Loa by USGS HVO scientists:
Small-magnitude earthquakes continue to occur beneath the volcano. This week, relative to recent weeks, shallow seismicity beneath the summit caldera and upper Southwest Rift Zone, at depths less than 5km (3miles), was slightly diminished. Additional deeper seismicity (5-13 km or 3-8 miles) was scattered beneath the southeast and west flanks of the volcano. Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone. No significant changes in volcanic gas emissions, sulfur dioxide or carbon dioxide were measured.