Videos

• Wetlands are hotspots for mercury methylation and export of methylmercury to aquatic foodwebs.
• Rice is the most abundant wetland type in California and globally in temperate and tropical latitudes.

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and was reaching the base of the pali today. Although the malority of the flow activity is pāhoehoe, the fast-moving flow front IS channe ized 'a'ā. The leading tip of the flow is burning vegetation in a kīpuka.

The lava flow southeast of Pu'u 'Ō'ō continues to advance downslope, and is now progressing down the pali. The flow is following the eastern boundary of Hawai'i Volcanoes National Park, and the western boundary of the abandoned Royal Gardens subdivision. Although the majority of the flow activity is pāhoehoe, the fast-moving flow front is channelized 'a'ā.

The lava lake at Kilauea's summit has risen over the past few days, providing improved views of the lake activity. Spattering along the southern lake margin was vi orous this evening, but within the range of normal activity for the la e. Spatter was thrown as high as the Halema'uma'u Crater floor, about 25 m (80 ft) above the lake surface.

The permanence of stream flow in stream networks is a critical driver of water quality, in-stream and riparian ecological processes, and downstream water availability.

USGS Research Geophysicist Kate Allstadt conducts experiments at the U.S. Geological Survey debris-flow flume, near Eugene, Oregon. Dr. Allstadt and her group are working toward an understanding of how debris flows generate seismic signals.

What inspired a USGS geologist to study how dam removal changes rivers. Profile of Amy East.

This short video demonstrates wave runup and setup on a beach on a stormy day during Tropical Storm Colin. The camera, positioned in the surf zone, shows a multistory building in the background, while waves run up the shallow beach and wash sand from the eroded dune edge (scarp).

The Arizona Water Science Center discusses the use of a new method, called particle tracking, that will revolutionize the way USGS obtains stream flow data.

The two breakouts that began at Pu'u 'Ō'ō on May 24 are still active. This morning, the active portions of both flows remained relatively short, extending no more than 1 km (0.6 miles) from their breakout points. The eastern breakout, shown here, was developing a lava tube. A collapse in the roof of the tube provided a view of the lava stream.

On the remote western coast of Australia lies a UNESCO World Heritage Site above and below the sea. Researchers from the U.S. Geological Survey and University of Western Australia convened here at Ningaloo Reef and Jurabi Coastal Reserve to embark on the most extensive study EVER done into how coral reefs shape our coasts.
 

• Yellowstone is one of a few dozen volcanoes on earth capable of "supereruptions" that expel more than 1,000 cubic km of ash and debris.
• The plumes from such eruptions can rise 30 to 50 km into the atmosphere, three to five times as high as most jets fly.

Video of spattering along the north margin of Kīlauea Volcano's summit lava lake.

The two breakouts that began at Pu‘u ‘Ō‘ō yesterday (May 24) are still active. This morning, the active portions of both flows remained relatively short, extending no more than 1 km (0.6 miles) from their breakout points.

JoAnn Holloway, biogeochemist with the USGS Mineral Resources Program, explains how interdisciplinary science can help better inform the conditions of a complex ecosystem.

Two new breakouts at Pu`u `Ō`ō began this morning just before 7:00 a.m., HST. The larger of the two breakouts, shown here, originated from the northeast flank of the cone, and fed a vigrous channelized flow that extended about 1 km (0.6 miles) towards the northwest.

This video presents a visualization of shaking that was recorded in the Frontier Building in Anchorage, Alaska, during the Mw7.1 earthquake, January 24, 2016, Iniskin, Alaska. It exhibits how a tall building behaves and performs during strong earthquake shaking.

The USGS Hydrography Webinar Series shares success stories from users, provides information on The National Hydrography Dataset (NHD) and other related products, and provides a forum for users to learn more about Hydrography-related topics.

The crater floor at Pu‘u ‘Ō‘ō has recently experienced minor uplift due to inflation within Pu‘u ‘Ō‘ō cone. The crater floor uplift is subtle, and probably no more than about 1 meter (3 feet) since May 15. Small, hot cracks have appeared on the crater floor during the uplift.

During edge-of-field monitoring of an agricultural field runoff event, a depth-integrated sample arm (DISA) is used to take a water sample at the same time a traditional water sample is taken from an intake located at the bottom of the H-flume exit, where the water is assumed to be completely mixed.

Dave Krabbenhoft discusses working on the U.S. EPA's Lake Guardian, and the perspective he and his team have by being on board and viewing the less developed parts of the shoreline from the middle of the lake.