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Glowing lava flowing down a stream channel with tall rock banks.People watch from the bank tops.
March 31, 1987

Lava flow enters Queens Bath, Kilauea Volcano, 1987

Bystanders watch steam rising from Queens Bath as lava flow enters the water. Lava overran Highway 130 at 0748 Hawaii Standard Time on the same morning at the western margin of the Kapa'ahu flow. By the end of the day, Punalu'u heiau was overrun, and Queens Bath was filled with lava.

Image: San Andreas Fault in SE Coachella Valley
February 1, 1986

San Andreas Fault in SE Coachella Valley

Oblique aerial view of San Andreas Fault (between white arrows) in southeastern Coachella Valley, near Red Canyon; view to the west.

 

Attribution: Natural Hazards
Photo taken from the air, looking down on red hot lava fountaining up from a vent, then running in red channels down a slope.
April 22, 1985

Aerial view of waning lava fountain, Kilauea Volcano, 1985

Aerial view, from the east, of waning lava fountain from Pu'u 'O'o on Hawai'i Island's Kilauea Volcano. Taken at the end of eruption episode 32. Pu'u 'O'o rose 209 meters above the pre-1983 surface (928 meters above sea level).

Image: Aerial View of Mauna Loa Volcano, Hawaii
January 9, 1985

Aerial View of Mauna Loa Volcano, Hawaii

USGS Hawaiian Volcano Observatory scientists monitor Mauna Loa, the largest active volcano on Earth. In this 1985 aerial photo, Mauna Loa looms above Kīlauea Volcano’s summit caldera (left center) and nearly obscures Hualālai in the far distance (upper right).

Attribution: Natural Hazards
Red hot lava erupts vertically in the air from a cone of black, hardened lava
September 6, 1983

Low fountain of lava from Pu'u 'O'o, Kilauea Volcano, 1983

Low fountain, approximately 50 meters high, from Pu'u 'O'o on Hawai'i Island's Kilauea Volcano (viewed from the north). Lava issuing from the breach in the northeast rim of the crater produced an 'a'a flow that extended more than 4 kilometers. Eruption episode 8.

Red hot lava fountaining 100 meters into the air from a cone of hardened, black lava
September 6, 1983

100-meter lava fountain, Kilauea Volcano, 1983

Pu'u 'O'o fountain approximately 100 meters high during eruption episode 8 on Hawai'i Island's Kilauea Volcano. Dark clots of spatter land near the base of the fountain, contributing to the growth of the cone. Less dense cinder, visible in the upper right, is carried downwind of the cone.

egg-shaped ball of red-hot lava with a blackened crust sitting on a bed of grass
July 23, 1983

Lava ball, Kilauea Volcano, 1983

Accretionary lava ball comes to rest on the grass after rolling off the top of an 'a'a flow in Royal Gardens subdivision on Hawai'i Island's Kilauea Volcano. Accretionary lava balls form as viscous lava is molded around a core of already-soldified lava.

Flat-topped cinder cone with red-hot lava splattering out of the top and cascading down the sides.
June 29, 1983

Pu'u 'O'o cinder-and-spatter cone, Kilauea Volcano, 1983

View at dusk of the young Pu'u 'O'o cinder-and-spatter cone, with fountain 40 meters high, on Hawai'i Island's Kilauea Volcano (episode 5).

A stream of red hot lava arcs into the air and splatters down on cooler, black lava flows
February 25, 1983

Arching fountain of lava, Kilauea Volcano, 1983

Arching fountain of lava approximately 10 meters high issuing from the western end of the 0740 vents, a series of spatter cones 170 meters long, south of Pu'u Kahaualea on Hawai'i Island's Kilauea Volcano (episode 2). Episodes 2 and 3 were characterized by spatter and cinder cones, such as Pu'u Halulu, which was 60 meters high by episode 3.

Photo showing a dozen narrow, blackened tree trunks with a crusted layer of black lava clinging to the bottom of each tree
January 7, 1983

Forest of lava trees, Kilauea Volcano, 1983

Forest of lava trees resulting from eruption of a 1-km-line of vents east of Pu'u Kahaulea on Hawai'i Island's Kilauea Volcano. The bulbous top of each lava tree marks the high stand of the lava flow as it spread through the trees. As the fissure eruption waned, the flow continued to spread laterally; its surface subsided, leaving pillars of lava that had chilled against tree trunks....

Image shows two scientists on the slopes of Mount St. Helens with steam rising around them
September 24, 1981

Gas Sampling around the Mount St. Helens Dome

USGS geologists gathered samples by hand from vents on the dome and crater floor. Additionally, sulfur dioxide gas was measured from a specially equipped airplane before, during, and after eruptions to determine "emission rates" for the volcano.