Images

A narrow stream of lava pours from the top of a tumulus (roughly 3 meters, or 10 feet above the surroundings), attesting to the fluid pressure in the interior of the flow. This view looks north, towards the area that lava is burning forest. Mauna Kea is faintly visible in the distance.

This map shows recent changes to Kīlauea's active East Rift Zone lava flow field. The area of the flow field on January 19 is shown in pink, while widening and advancement of the flow field as mapped on February 12 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.

Scattered breakouts persist northeast of Pu‘u ‘Ō‘ō, with much of the active lava moving along the northern flow field boundary, burning vegetation and creating smoke plumes. This view looks southwest, and Pu‘u ‘Ō‘ō is near the top of the photograph.

A closer view of Pu‘u ‘Ō‘ō, looking northwest. The vent for the June 27th lava flow is at the right edge of the photograph, near the source of white fume. Mauna Loa (upper left) and Mauna Kea (upper right) are visible in the distance.

One of the many active pāhoehoe lobes on the flow field today.

Comparison of a normal photograph with a thermal image of a pāhoehoe lobe on the flow field today.

The summit lava lake level has continued to rise over the past week with inflation, and was about 30 meters (roughly 100 feet) below the Overlook crater rim.

Clear skies today had bright sunlight filtering through the thick fume on the rim of Pu‘u ‘Ō‘ō Crater.

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

A Ehmania walcotti 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.

An HVO geologist collects spatter deposited around the base of the hornito for geochemical analysis.

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.