USGS
Hawaiian Volcano Observatory

Photo Information


Lava fountains erupt from fissures on upper northeast rift zone, Mauna Loa Volcano
Photograph by J.D. Griggs at 6:24 a.m. HST on March 25, 1984.

Lava fountains erupt along enechelon fissures on the northeast rift zone of Mauna Loa Volcano. Pohaku Hanalei cinder-spatter cone (upper left) is located about 3.2 km NE from the north edge of the caldera rim. Eruption rates were as high as 2.9 million m3 per hour during the first 6 hours of the eruption, then diminished to about 0.5 million m3 per hour for the next 12 days. Sizable pahoehoe flows formed only during the first day of the eruption and within a few kilometers of the vents; at greater distances from the vents, pahoehoe lava changed into `a`a.


HomeVolcano WatchProductsPhoto GalleryPress Releases
How Hawaiian Volcanoes Work

The URL of this page is http://hvo.wr.usgs.gov/gallery/maunaloa/1984/2441073_caption.html
Contact: hvowebmaster@usgs.gov
Updated: 6 July 1998