Images

A diver peeks from behind a badly bleached coral in the Florida Keys National Marine Sanctuary in October 2015. Coral bleaching events caused by abnormally warm ocean temperatures continue to regularly claim the lives of coral populations around the globe. 

A Hawaiian Volcano Observatory volunteer demonstrates "Drop! Cover! Hold on!"—actions that can reduce injuries or prevent death during an earthquake.

Graphic from the Great Hawaii ShakeOut website (http://shakeout.org/hawaii/) showing the recommended actions to protect yourself during an earthquake.

Alert levels and aviation color code icons for volcanoes within the USGS area of responsibility.

USGS scientist Matt Jennings inspects streamgage number  02136361 at Turkey Creek near Maryville, South Carolina, the morning of October 4, 2015. The discharge they measured was 6,000 cfs.

This small-scale map shows Kīlauea's active East Rift Zone lava flow in relation to the eastern part of the Island of Hawai‘i. The area of the flow on September 11 is shown in pink, while widening and advancement of the flow as of September 30 is shown in red. The yellow lines show the active lava tube system.

This map shows recent changes to Kīlauea's active East Rift Zone lava flow field. The area of the flow on September 11 is shown in pink, while widening and advancement of the flow as of September 30 (based on satellite imagery) is shown in red. The yellow lines show the active lava tube system.

A large wave crashes on the reef at Laysan Island, located in the Northwestern Hawaiian Islands.

The June 27th lava flow remains active with scattered breakouts northeast of Pu‘u ‘Ō‘ō. The farthest active breakout today was about 6.5 km (4 miles) from Pu‘u ‘Ō‘ō. This photograph shows activity along the northern flow boundary, where breakouts continue to burn vegetation.

This Quicktime video shows lava sample collection from the perspective of an HVO geologist.

This wide view shows the lava lake active within the Overlook crater, which is set within the larger Halema‘uma‘u Crater. There have been no major changes in the lake in recent weeks. This morning the lava lake was roughly 60 meters (200 feet) below the rim of the Overlook crater.

This is an animated GIF, taken from a longer video, showing the moment that this geologist from the Hawaiian Volcano Observatory (HVO) scoops up lava from an active flow and drops it into a bucket of water to cool it down. 

This view looks west towards Pu‘u ‘Ō‘ō, which can be seen in the upper left. The most distant active breakouts today were located near the center of the photograph, at a spot roughly 6.5 km (4 miles) from Pu‘u ‘Ō‘ō.

A lava pond has been active in the western portion of Pu‘u ‘Ō‘ō crater for several months.

A closer look at the lava lake in the Overlook crater.

HVO geologists hike through thick fume and fog to reach the lava pond in the western portion of Pu‘u ‘Ō‘ō crater.

Replica of a 19th century soda bottle that was sealed with a blue marble (visible in lower crimp of the bottle). Bottles like this played a part in creating the bottled soda analogy of how and why volcanoes erupt. The Halema‘uma‘u Overlook gas plume is visible in the background. USGS photo.

USGS hydrologist Mark Reid looks at one of the many grabens (extensional basins) that formed as the Oso landslide swept across the North Fork Stillaguamish River valley.

This panorama is from the north rim of Mauna Loa's summit caldera, Moku‘āweoweo, and shows the thermal camera watching for changes on the caldera floor.

An HVO geologist performs a routine check of the thermal camera and webcam at the summit of Mauna Loa.

Science outreach at Waquoit Bay National Estuarine Research Reserve.