Natural Hazards
Multimedia
The story of Yellowstone's ups and downs
Yellowstone Volcano Observatory Scientist-in-Charge Mike Poland visits Yellowstone National Park to tell the story of how the ground there moves up and down over time. This motion has been measured using a variety of techniques over the past 100 years, and from geological mapping scientists can even tell how the ground has moved going back about 15,000 years! This research
Bathymetry: Mapping the depth of Tampa Bay with USGS (Teaser)
Join the USGS St. Petersburg Coastal and Marine Science Center on an adventure in the field! Our team of scientists will take you on board a personal watercraft near downtown St. Pete to show you how they collect bathymetry data – which is the depth of the ocean floor (in this case, Tampa Bay). This video was created as part of the 2020 St. Petersburg Science Festival (
Yellowstone Volcano Observatory Monthly Update: October 1, 2020
Mike Poland, Scientist-in-Charge of the Yellowstone Volcano Observatory, gives an overview of activity at Yellowstone during September 2020.
Views of Kīlauea's growing summit water lake
A helicopter overflight on September 23, 2020, provided airborne views of the water lake at the summit of Kīlauea Volcano. Visual and thermal images collected during the overflight are used for mapping the slowly enlarging lake. A segment of the video shows the remains of Crater Rim Drive, a portion of which collapsed during the 2018 summit activity. USGS video by M.
Video of the water lake at Kīlauea's summit
This video, taken on September 23, 2020, shows a small area of bubbling or upwelling along the western shoreline of the water lake at the summit of Kīlauea. This feature may result from a submerged fumarole (gas vent) on the crater wall. The extent of this feature is limited and it does not seem to have a significant effect on the overall lake surface activity. No other
USGS hydrologists respond to historic hurricane season
Throughout the historically active 2020 Atlantic Hurricane Season,USGS hydrologists have been working quickly to collect vital flood and streamflow information in impacted areas.
USGS hydrologists respond to historic hurricane season
Throughout the historically active 2020 Atlantic Hurricane Season,USGS hydrologists have been working quickly to collect vital flood and streamflow information in impacted areas.
Aerial photos of barrier islands
We conduct fieldwork in a variety of barrier island settings to understand the relative importance of these factors, including Fire Island, NY; Rockaway, NY; Seven Mile Island, NJ; and Cedar Island, VA.
Sediment berm along the northern Chandeleur Islands, Louisiana
Sediment berm placement in the shoreface of northern Chandeleur Islands, Louisiana
(looking north). This berm was placed in 2010 during the Deepwater Horizon oil spill to prevent oil from reaching the island and the mainland of Louisiana in this area of the coast. The sediment deposited along the shoreline was dredged from a borrow pit north of berm placement on a
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USGS Scientists Work on Four Tropical Cyclones at Once
In this NOAA satellite image from Sept. 15, 2020, Hurricane Sally approaches the U.S. Gulf Coast, Hurricane Paulettte creates storm waves far out in the Atlantic, and Tropical Storms Teddy and Vicky lie near the coast of Africa. Two tropical depressions are also developing; one of them is not visible in this image.
On the surface of Kīlauea's new landscape, a story is told
On the surface of Kīlauea's new landscape, a story is told
Underneath Kīlauea's new landscape, the magma plumbing keeps working
View of the 2018 Kīlauea caldera collapse structures from Kīlauea Overlook within Hawai‘i Volcanoes National Park. USGS photo by K. Mulliken on Sept. 2, 2020.