Natural Hazards

Multimedia

Filter Total Items: 4,345
Map of SW Puerto Rico coast and seafloor
May 14, 2020

Finding Seafloor Faults Linked to Puerto Rico Earthquake

Map of the portion of the southwest coast of Puerto Rico affected by an earthquake sequence that began in December 2019, along with portions of the seafloor where faults involved in the earthquake sequence were suspected to exist. (A related image shows indications of seafloor faulting found on a USGS seismic research cruise led by USGS research geophysicist Uri ten Brink

...
May 1, 2020

Yellowstone Volcano Observatory Monthly Update: May 1, 2020

Mike Poland, Scientist-in-Charge of the Yellowstone Volcano Observatory, gives an overview of activity at Yellowstone during April 2020.
 

Map of seismic research site on seafloor off Puerto Rico
April 30, 2020

Scientists find signs of undersea faults off SW Puerto Rico

Locations of multichannel seismic reflection profiles (in black), collected during cruise FA2020-14. The profiles are overlain on colored and shaded multibeam bathymetry, Lidar topography (green and white) and near-shore bathymetry (darker blue), and NOAA coastal relief model (light blue and white). Dashed purple lines – hypothesized faults from the distribution of

...
Color photo of a fire and Frank Fay with the Eyes on Earth podcast logo
April 22, 2020

Eyes on Earth Episode 24 - Wildfire Risk to Communities

The U.S. has plenty of data on wildfire risk. There are local and regional risk assessments, complex datasets like LANDFIRE and tracking tools like the EROS Fire Danger Monitor, as well as a host of resources and research projects devoted to the subject. But much of that information is steeped in the language of fire science and difficult to comprehend for those outside it

A scientists observes a volcano crater
April 6, 2020

A geologists makes observations at Kilauea

Clear weather allowed HVO geologists to make observations and take measurements of the water pond at Kīlauea's summit. No major changes were observed, and the water level continues to slowly rise. Note the former HVO observation tower can be seen above the geologist's helmet. 

April 1, 2020

Yellowstone Volcano Observatory Monthly Update: April 1, 2020

Mike Poland, Scientist-in-Charge of the Yellowstone Volcano Observatory, gives an overview of activity at Yellowstone during March 2020.
 

Four USGS scientists on mountainside with landslides and downed trees
March 18, 2020

On a hillside in Las Marias, USGS scientists examine landslide effects

USGS ground failure experts examine landslides after Hurricane Maria in the municipality of Las Marias, Puerto Rico.

March 17, 2020

Detecting Dune Features: Coast Guard Beach, Massachusetts

Tall and contiguous coastal dunes can substantially mitigate storm surge and flooding near our coasts. Understanding the position and height of dunes, as well as how these features change over time, is critical to the USGS mission of predicting impacts to coastal infrastructure and habitat caused by storms and hurricanes. To this end, the USGS operates a number of small

Aerial photograph showing a fiord and bay area, labeled with features like fan deltas from rivers.
March 15, 2020

Overview of Taan Fiord

Overview of Taan Fiord. Inset showing location of Taan Fiord, Alaska in Wrangell St. Elias National Park and Preserve. Taan Fiord is about 100 km from the nearest town, Yakutat, AK. Landsat 8 image of Taan Fiord acquired in 2016. Vegetation loss is clear near the water line. The evacuated subaerial landslide area and runout are visible to the left of the fjord head.

...
Scientist on research vessel prepares to launch hydrophone
March 5, 2020

Scientist launches instrument used to map seafloor off Puerto Rico

USGS marine technician Wayne Baldwin prepares to deploy the hydrophone array during a seismic research cruise off the southwest coast of Puerto Rico on board the R/V Sultana in March 2020.

Marine technician deploy a hydrophone off Puerto Rico
March 5, 2020

USGS marine technicians launch a hydrophone off Puerto Rico seafloor

USGS marine technicians Alex Nichols (L) and Eric Moore (R) deploy the hydrophone array on a seismic research cruise off the southwest coast of Puerto Rico aboard the R/V Sultana in March 2020.