Images

A closer view of the lava lake surface. The white plume originates from lava spattering, just out of view.

This map overlays a georeferenced thermal image mosaic onto a map of the flow field near Pu‘u ‘Ō‘ō to show the distribution of active and recently active breakouts. The thermal images were collected during a helicopter overflight on February 12. The June 27th flow field as mapped on January 19 is outlined in green for comparison.

(Left) Multiple degassing sources in the crater and on the flanks of Pu‘u ‘Ō‘ō create a plume that fills the sky above Kīlauea Volcano's East Rift Zone eruption site on December 30, 2015. (Right) Kīlauea Volcano's summit lava lake within Halema‘uma‘u Crater discharges a particle-rich plume of noxious sulfur dioxide on December 9, 2015. USGS photos.

Before and after photos by Menzies Dickson of a Mauna Loa lava flow cascading into and ultimately filling a stream bed near Hilo in July 1881. Photos courtesy of National Park Service, Hawai‘i Volcanoes National Park.

An 1891 map of Hilo, produced by Surveyor E.D. Baldwin, is superimposed on a recent Google Earth image of the town to show the location of the Kalanakamaa gulch relative to the ALENAIO and Waiākea streams.

A Ehmania walcotti trilobite from Yellowstone National Park. Scale is in millimeters.  Specimen located at the Smithsonian National Museum of Natural History.

A Ptychopariid trilobite from Yellowstone National Park. Scale is in millimeters.  Specimen located at the Smithsonian National Museum of Natural History.

In this shaded relief and bathymetric map of the Island of Hawai‘i, colors indicate water depth, from shallow (orange and yellow) to deep (blue and purple), and shades of gray indicate the land area above sea level. From: U.S.

This is a simplified diagram of regional range front faults as they intersect the Long Valley Caldera.

In this shaded relief and bathymetric map of Maui County, colors indicate water depth, from shallow (orange and yellow) to deep (blue and purple), with shades of gray indicating island areas above sea level. From: U.S.

This small-scale map shows Kīlauea's active East Rift Zone lava flow field in relation to the eastern part of the Island of Hawai‘i. The area of the flow field on January 5 is shown in pink, while widening and advancement of the flow field as mapped on January 19 is shown in red. Pu‘u ‘Ō‘ō lava flows erupted prior to June 27, 2014, are shown in gray.

This map overlays a georeferenced thermal image mosaic onto a map of the flow field near Pu‘u ‘Ō‘ō to show the distribution of active and recently active breakouts. The thermal images were collected during a helicopter overflight on January 19. The June 27th flow field as mapped on January 5 is outlined in green for comparison.

This map shows recent changes to Kīlauea's active East Rift Zone lava flow field. The area of the flow field on January 5 is shown in pink, while widening and advancement of the flow field as mapped on January 19 is shown in red. The yellow lines show the active lava tube system. Pu‘u ‘Ō‘ō lava flows erupted prior to June 27, 2014, are shown in gray.

Viewing conditions into Pu‘u ‘Ō‘ō Crater were exceptional today, providing clear views of the crater floor. This view is towards the northwest. The inner, deeper crater formed in mid-2014 following the opening of the June 27th vent, and occasional small flows on the crater floor are evident by their dark color.

This photograph was taken from the western pit at Pu‘u ‘Ō‘ō, and shows the small lava pond (roughly 20 m in diameter) contained within the pit.

Incandescence was visible in the small pit that formed recently on the upper northeast flank of Pu‘u ‘Ō‘ō.

Colorful sulfur deposits have formed recently around one of the cracks on the floor of Pu‘u ‘Ō‘ō Crater.

A hornito has recently formed over the lava tube on the north flank of Pu‘u ‘Ō‘ō, at the spot of the breakout that occurred on November 25.

Scattered breakouts remain active northeast of Pu‘u ‘Ō‘ō, with the farthest active lava today at 5.9 km (3.7 miles) distance from the vent on Pu‘u ‘Ō‘ō. Much of the activity is at or near the forest boundary, creating numerous areas of burning. This view looks southwest, with Pu‘u ‘Ō‘ō visible in the upper left portion of the image.

A closer view of Pu‘u ‘Ō‘ō, just above the center point of the photograph. View is towards the southwest. In the foreground, the circular lava pond that was active in July 2014 is visible. The lava tube feeding the active flows on the June 27th lava flow is evident by the line of white fume sources extending off the right side of the photograph.

A view of the western portion of Pu‘u ‘Ō‘ō Crater, with the small circular pit that contains the active lava pond. HVO's cameras are on the rim at the right side of the photograph.