Early Earthquake Warning! Safety Potentials and Limits
Possible alert times that earthquake early warning systems can provide people at different levels of ground motion from light to very strong shaking.Read Story
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Costs and consequences of natural hazards can be enormous; each year more people and infrastructure are at risk. We develop and apply hazards science to help protect U.S. safety, security, and economic well being. These scientific observations, analyses, and research are crucial for the Nation to become more resilient to natural hazards.Read Our Science Strategy
The USGS National Assessment of Storm-Induced Coastal Change Hazards group releases coastal change forecasts and pre- and post-storm photos documenting coastal change for landfalling storms.
The viewer shows predictions of the timing and magnitude of water levels at the shoreline and potential impacts to coastal dunes. Research is part of the National Assessment of Coastal Change Hazards project.
The assessment methodology is based on a storm-impact scaling model that uses observations of beach morphology combined with sophisticated hydrodynamic models to predict how the coast will respond to the direct landfall of extreme storms. Research part of the National...
A modeled scenario of U.S. West Coast winter storm events induced by the formation of Atmospheric Rivers (AR) and capable of causing massive and devastating flooding.
Worked with USGS Yellowstone Volcano Observatory (YVO) and outside academic partners to plan and stage a workshop bringing together volcano researchers, emergency managers, and social scientists to raise awareness about hazardous volcanoes in the southwest.
Seafloor resource managers and modelers need seafloor maps that can be combined in GIS, modeling, and statistical analysis environments and related successfully to biologic and oceanographic data. The Marine Geomorphology, Evolution, and Habitats Project encompasses mapping activities and the development of new mapping systems and methodologies. The emphasis is on the role of geologic...
Process studies examine the physical processes at work prior to, during, and following coastal storm events. Understanding the processes involved in coastal landform evolution will improve the accuracy of the assessments of storm-induced coastal change hazards. Research is part of the ...
SAFRR is now a partner in the Los Angeles County Community Disaster Resilience project, a 3-year pilot collaboration to promote community resilience in the face of a wide range of public health emergencies.
The overall objective is to improve real-time and scenario-based predictions of coastal change to support management of coastal infrastructure, resources, and safety. Research is part of the National Assessment of Coastal Change Hazards project.
This research seeks to objectively determine the relative risks due to future sea-level rise for the U.S. Atlantic, Pacific, and Gulf of Mexico coasts. Research is part of National Assessment of Coastal Change Hazards project.
Percentage of sandy beaches very likely (probability > 0.9) to experience erosion associated with collision, overwash, and inundation during class 1-3 nor’easter impact.
Percentage of sandy beaches very likely (probability > 0.9) to experience erosion associated with collision, overwash, and inundation during category 1-5 hurricane landfall.
Multichannel sparker seismic-reflection data of field activity 2016-656-FA; between Icy Point and Dixon Entrance, Gulf of Alaska from 2016-08-07 to 2016-08-26
This data release contains high-resolution multichannel seismic (MCS) reflection data collected in August of 2016 along the southeast Alaska continental margin. Structure perpendicular MCS profiles were collected along the Queen Charlotte-Fairweather fault. The data were collected aboard the R/V Norseman using a Delta sparker sound source and recorded on a 64-channel digital streamer...
Shoreline change rates in salt marsh units in Edwin B. Forsythe National Wildlife Refuge, New Jersey
This dataset displays shoreline change rates at the Edwin B. Forsythe National Wildlife Refuge (EBFNWR), which spans over Great Bay, Little Egg Harbor, and Barnegat Bay in New Jersey, USA
Sea floor sediment samples, seabed imagery, and CTD data collected in Stellwagen Bank National Marine Sanctuary, MA in 2015, U.S. Geological Survey Field Activity 2015-062-FA
This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics.
Integrated terrain models covering 16,357 square kilometers of the Massachusetts coastal zone and offshore waters were built to provide a continuous elevation and bathymetry terrain model for ocean planning purposes. A Triangulated Irregular Network was created from public-domain bathymetric and LiDAR data using the ArcGIS terrain-model framework and then interpolated into a 32-bit GeoTiff....
Aerial imagery and photogrammetric products from unmanned aerial systems (UAS) flights over the Lake Ontario shoreline at Braddock Bay, New York, July 10 to 11, 2017
Low-altitude (80-100 meters above ground level) digital images were obtained from a camera mounted on a 3DR Solo quadcopter, a small unmanned aerial system (UAS), in three locations along the Lake Ontario shoreline in New York during July 2017. These data were collected to document and monitor effects of high lake levels, including shoreline erosion, inundation, and property damage.
Total water level (TWL) at the shoreline is the combination of tides, surge, and wave runup. A forecast of TWL is an estimate of the elevation where the ocean will meet the coast and can provide guidance on potential coastal erosion and flooding hazards.
Obique photos offer a unique perspective of the coast. Features such as beach erosion or accretion, dune erosion and overwash can all be clearly characterized in this imagery. It also documents coastal infrastructure, as well as the damage that infrastructure may incur as the result of an impacting hurricane.
Multibeam and multichannel sparker seismic-reflection data between Cross Sound and Dixon Entrance, offshore southeastern Alaska, collected from 2016-05-17 to 2016-06-12 during field activity 2016-625-FA
Multibeam bathymetry and multichannel sparker seismic relfection data collected along the Queen Charlotte-Fairweather Fault between Icy Point and Dixon Entrance, offshore southeastern Alaska from 2016-05-17 to 2016-06-12.
Multichannel minisparker and chirp seismic-reflection data of field activity 2015-651-FA; Chatham Strait and Cross Sound, southeastern Alaska from 2015-08-03 to 2015-08-21
High-resolution multichannel minisparker and chirp seismic-reflection data were collected in August of 2015 to explore marine geologic hazards of inland waterways of southeastern Alaska. Sub-bottom profiles were acquired in the inland waters between Glacier Bay and Juneau, including Cross Sound and Chatham Strait.
Hurricane Sandy science plan: impacts of storm surge, including disturbed estuarine and bay hydrology
Hurricane Sandy devastated some of the most heavily populated eastern coastal areas of the Nation. With a storm surge peaking at more than 19 feet, the powerful landscape-altering destruction of Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. In response to this natural disaster, the U.S....Caskie, Sarah A.
Hurricane Sandy science plan: New York
Hurricane Sandy is a stark reminder of why the Nation must become more resilient to coastal hazards. More than one-half of the U.S. population lives within 50 miles of a coast, and this number is increasing. The U.S. Geological Survey (USGS) is one of the largest providers of geologic and hydrologic information in the world. Federal, State, and...Ransom, Clarice N.
U.S. Geological Survey natural hazards science strategy: promoting the safety, security, and economic well-being of the Nation
The mission of the U.S. Geological Survey (USGS) in natural hazards is to develop and apply hazard science to help protect the safety, security, and economic well-being of the Nation. The costs and consequences of natural hazards can be enormous, and each year more people and infrastructure are at risk. USGS scientific research—founded on...Holmes, Robert R.; Jones, Lucile M.; Eidenshink, Jeffery C.; Godt, Jonathan W.; Kirby, Stephen H.; Love, Jeffrey J.; Neal, Christina A.; Plant, Nathaniel G.; Plunkett, Michael L.; Weaver, Craig S.; Wein, Anne; Perry, Suzanne C.
Operational Group Sandy technical progress report
Hurricane Sandy made US landfall near Atlantic City, NJ on 29 October 2012, causing 72 direct deaths, displacing thousands of individuals from damaged or destroyed dwellings, and leaving over 8.5 million homes without power across the northeast and mid-Atlantic. To coordinate federal rebuilding activities in the affected region, the President...
Relative azimuth inversion by way of damped maximum correlation estimates
Horizontal seismic data are utilized in a large number of Earth studies. Such work depends on the published orientations of the sensitive axes of seismic sensors relative to true North. These orientations can be estimated using a number of different techniques: SensOrLoc (Sensitivity, Orientation and Location), comparison to synthetics (Ekstrom...Ringler, A.T.; Edwards, J.D.; Hutt, C.R.; Shelly, F.
Report on the 2010 Chilean earthquake and tsunami response
In July 2010, in an effort to reduce future catastrophic natural disaster losses for California, the American Red Cross coordinated and sent a delegation of 20 multidisciplinary experts on earthquake response and recovery to Chile. The primary goal was to understand how the Chilean society and relevant organizations responded to the magnitude 8.8...
Geoinformatics in the public service: building a cyberinfrastructure across the geological surveys
Advanced information technology infrastructure is increasingly being employed in the Earth sciences to provide researchers with efficient access to massive central databases and to integrate diversely formatted information from a variety of sources. These geoinformatics initiatives enable manipulation, modeling and visualization of data in a...Keller, G. Randy; Baru, Chaitanya; Allison, M. Lee; Gundersen, Linda C.; Richard, Stephen M.
Temporal variations in Global Seismic Stations ambient noise power levels
Recent concerns about time-dependent response changes in broadband seismometers have motivated the need for methods to monitor sensor health at Global Seismographic Network (GSN) stations. We present two new methods for monitoring temporal changes in data quality and instrument response transfer functions that are independent of Earth seismic...Ringler, A.T.; Gee, L.S.; Hutt, C.R.; McNamara, D.E.
OMG earthquake! can twitter improve earthquake response?
[No abstract available]Earle, P.; Guy, M.; Buckmaster, R.; Ostrum, C.; Horvath, S.; Vaughan, A.
Natural Hazards - A National Threat
The USGS Role in Reducing Disaster Losses -- In the United States each year, natural hazards cause hundreds of deaths and cost billions of dollars in disaster aid, disruption of commerce, and destruction of homes and critical infrastructure. Although the number of lives lost to natural hazards each year generally has declined, the economic cost...Geological Survey, U.S.
A deep reef in deep trouble
The well-documented degradation of shallower reefs which are often closer to land and more vulnerable to pollution, sewage and other human-related stressors has led to the suggestion that deeper, more remote offshore reefs could possibly serve as sources of coral and fish larvae to replenish the shallower reefs. Yet, the distribution, status, and...Menza, Charles; Kendall, M.; Rogers, C.; Miller, J.
Hurricanes 2004: An overview of their characteristics and coastal change
Four hurricanes battered the state of Florida during 2004, the most affecting any state since Texas endured four in 1884. Each of the storms changed the coast differently. Average shoreline change within the right front quadrant of hurricane force winds varied from 1 m of shoreline advance to 20 m of retreat, whereas average sand volume change...Sallenger, Asbury H.; Stockdon, Hilary; Fauver, Laura A.; Hansen, Mark; Thompson, David; Wright, C. Wayne; Lillycrop, Jeff
Sediment transport team members manage tag lines to control the motion of the bottom lander as it is deployed.
Sediment transport team members assemble chain, shackles and pear links that are are attached to the anchor and floats as part of deploying a mooring.
A team of USGS geologists provide science support following Montecito post-fire debris-flow event.
Title: ShakeAlert: The Path to West Coast Earthquake Early Warning ... how a few seconds can save lives and property
- The ShakeAlert earthquake early warning system will begin limited operations this year.
- Alerts could save lives and properties but several challenges remain.
- With millions at risk, why isn't full public alerting happening yet?
The Dec. 4, 2017 Thomas fire, Southern California's largest wildfire on record, burned more than 280,000 acres across Ventura and Santa Barbara counties for nearly a month.
Days after fatal debris flows devastated Southern California’s Montecito community, a team of U.S. Geological Survey geologists joined county, state, and federal partners to survey and evaluate the aftermath.
CMGP Lidar Coordinator participating in National Elevation Assessments and Coordination session at 2018 ASPRS Annual Conference
Xan Fredericks, Lidar Coordinator for the Coastal and Marine Geology Program, will moderate and participate in the National Elevation Assessments and Coordination session at the 2018 American Society for Photogrammetry and Remote Sensing (ASPRS) Annual Conference.
At 12:32 am Alaska time on January 23, 2018, a magnitude 7.9 earthquake shook Alaska residents out of their beds and set off fears of a tsunami all down the West Coast. Fortunately, the tsunami was only a few inches in height, but within an hour of the earthquake in Alaska, waves of a different sort were hitting far away in Florida.
ShakeAlert: The Path to West Coast Earthquake Early Warning: How a Few Seconds Can Save Lives and Property — Public Lecture
News reporters are invited to attend an illustrated public lecture to learn how U.S. Geological Survey scientists and partners are developing ShakeAlert. The ShakeAlert earthquake early warning system will begin limited operations this year. Alerts could save lives and properties but several challenges remain. With millions at risk, why isn't full public alerting happening yet?
USGS seismologist Elizabeth Cochran studied the performance of Mexico City’s earthquake early warning system, during devastating Sept. 19, 2017 event
USGS geologist Patrick Barnard spoke to the public at a “Coffee and King Tides” gathering held in Half Moon Bay, California, on December 4.
For the first time, high-resolution images show the three-dimensional structure of massive ice deposits on Mars. According to an in-depth analysis led by the USGS, the images reveal never-before-observed details about the ice sheets, including that some begin just a few feet below the Martian surface and extend to depths greater than 300 feet.
Interview on future impacts of sea-level rise on Cape Cod with meteorologist Danielle Niles on Trunk River Beach, Falmouth, MA