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Natural Hazards

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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.

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Filter Total Items: 289
Date published: February 14, 2019
Status: Active

Magnetic Disturbance Event Summaries

Select an event to view a summary.

Date published: February 12, 2019
Status: Active

Induced Seismicity Publications

USGS publications on induced seismicity.

Date published: February 12, 2019
Status: Active

Observational Studies

The USGS is currently studying seismicity that may be induced at 6 locations across the United States. These studies involve earthquake monitoring, examining industrial data, and evaluating any relationships between seismicity and industrial actions.

Date published: February 12, 2019
Status: Active

Hazard Estimation

The USGS is currently developing new methods to evaluate the hazard due to induced earthquakes. These methods will account for the rapid changes in earthquake rate that we have witnessed in the past few years.

Date published: February 12, 2019
Status: Active

Numerical Modeling

The USGS uses numerical simulations of earth processes to: Evaluate the physical relationships between fluid injection and earthquakes at specific sites, and to simulate possible future behaviors of new and ongoing injection projects.

Date published: February 12, 2019
Status: Active

Myths and Misconceptions

What you do and don’t know about induced seismicity.

Date published: February 12, 2019
Status: Active

Induced Earthquakes Overview

Between the years 1973–2008, there was an average of 25 earthquakes of magnitude three and larger in the central and eastern United States. This rate ballooned to over 600 M3+ earthquakes in 2014 and over 1000 in 2015. Since 2015 the earthquake rate has declined significantly (364 M3+ earthquakes in 2017), but this is still much higher than the natural earthquake rate.

Date published: December 14, 2018
Status: Completed

Preliminary simulation of the 2010 tsunami in Indonesia

Preliminary simulation of the tsunami from the October 25, 2010 M=7.7 subduction zone earthquake offshore of the Mentawai Islands, Indonesia

Contacts: Eric Geist
Date published: December 12, 2018
Status: Active

Tribal Land Vegetation and Watershed Modeling

San Carlos Apache Reservation covers 1.8 million acres in east-central Arizona, and has diverse ecosystems and vegetation types that support a natural resource-based economy.

Contacts: Laura M Norman
Date published: December 12, 2018
Status: Active

Hydrology Monitoring Tools

We provide local and national web-based tools so that policy makers and the public can easily access the information they need to enhance preparedness, response, and resilience.

Date published: December 6, 2018
Status: Completed

Journey Along a Fieldline

A comic book that introduces the basics of geomagnetism.
View the comic book (PDF).

Date published: November 28, 2018
Status: Active

Hurricane Sandy Response- Linking the Delmarva Peninsula's Geologic Framework to Coastal Vulnerability

The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy. In order to better constrain controls on coastal vulnerability and evolution, the region’s sediment sources, transport pathways and sediment sinks must be identified. This project defines the geologic framework of the Delmarva coastal system through...

Filter Total Items: 143
Date published: November 7, 2018

Mean tidal range in marsh units of Assateague Island National Seashore and Chincoteague Bay, Maryland and Virginia

This dataset displays the spatial variation of mean tidal range (i.e. Mean Range of Tides, MN) in the Assateague Island National Seashore and Chincoteague Bay based on conceptual marsh units defined by Defne and Ganju (2018). MN was based on the calculated difference in height between mean high water (MHW) and mean low water (MLW) using the VDatum (v3.5) database (...

Date published: November 7, 2018

Unvegetated to vegetated marsh ratio in Assateague Island National Seashore and Chincoteague Bay, Maryland and Virginia

Unvegetated to vegetated marsh ratio (UVVR) in the Assateague Island National Seashore and Chincoteague Bay is computed based on conceptual marsh units. The response and resilience of coastal wetlands to physical factors need to be assessed in terms of the ensuing change to their vulnerability and ecosystem services.

Date published: November 7, 2018

Elevation of marsh units in Assateague Island National Seashore and Chincoteague Bay, Maryland and Virginia

Elevation distribution in the Assateague Island National Seashore (ASIS) salt marsh complex and Chincoteague Bay is given in terms of mean elevation of conceptual marsh units.  The response and resilience of coastal wetlands to physical factors need to be assessed in terms of the ensuing change to their vulnerability and ecosystem services.

Date published: November 7, 2018

Conceptual marsh units for Assateague Island National Seashore and Chincoteague Bay, Maryland and Virginia

The salt marsh complex of Assateague Island National Seashore (ASIS) and Chincoteague Bay was delineated to smaller, conceptual marsh units by geoprocessing of surface elevation data. Flow accumulation based on the relative elevation of each location is used to determine the ridge lines that separate each marsh unit while the surface slope is used to automatically assign each unit a drainage...

Date published: October 25, 2018

Beach topography and nearshore bathymetry of northern Monterey Bay, California

This data release presents beach topography and nearshore bathymetry data from repeated surveys in northern Monterey Bay, California to document changes in shoreline position and coastal morphology as they relate to episodic (storms), seasonal, and interannual and longer processes. Since October 2014, semi-annual surveys have been performed in late summer (September or October...

Date published: October 11, 2018

Mean tidal range in marsh units of Plum Island Estuary and Parker River salt marsh complex, Massachusetts

This dataset displays the spatial variation of mean tidal range (i.e. Mean Range of Tides, MN) in the Plum Island Estuary and Parker River (PIEPR) salt marsh complex based on conceptual marsh units defined by Defne and Ganju (2018).  MN was based on the calculated difference in height between mean high water (MHW) and mean low water (MLW) using the VDatum (v3.5) database.

Date published: October 11, 2018

Unvegetated to vegetated marsh ratio in Plum Island Estuary and Parker River salt marsh complex, Massachusetts

Through scientific efforts initiated with the Hurricane Sandy Science Plan, the USGS has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands, including the Plum Island Estuary and Parker River salt marsh complex, with the intent of providing Federal, State, and local managers tools to estimate the vulnerability and ecosystem service potential...

Date published: October 10, 2018

Elevation of marsh units in Plum Island Estuary and Parker River salt marsh complex, Massachusetts

This data release provides elevation distribution in the Plum Island Estuary and Parker River (PIEPR) salt marsh complex. Elevation distribution was calculated in terms of mean elevation of conceptual marsh units. The elevation data was based on the 1-meter gridded Digital Elevation Model and supplemented by 1-meter resampled 1/9 arc-second resolution National Elevation Data, where data gaps...

Date published: October 10, 2018

Conceptual marsh units for Plum Island Estuary and Parker River salt marsh complex, Massachusetts

The salt marsh complex of Plum Island Estuary and Parker River was delineated to smaller, conceptual marsh units by geoprocessing of surface elevation data. Flow accumulation based on the relative elevation of each location was used to determine the ridge lines that separate each marsh unit while the surface slope was used to automatically assign each unit a drainage point, where water drains...

Date published: October 9, 2018

Sampling data collected in Ipswich Bay and Massachusetts Bay, Massachusetts, in 2012, U.S. Geological Survey Field Activity 2012-035-FA

This dataset, collected aboard the Ocean Survey Vessel Bold as part of the Geologic Mapping of the Massachusetts Sea Floor Program.  During the survey, surficial sediment samples and bottom still and video imagery were collected in Ipswich Bay and Massachusetts Bay, Massachusetts.

 

Date published: October 1, 2018

Coastal Storm Modeling System (CoSMoS) for Central California, v3.1

This dataset contains spatial projections of coastal cliff retreat (and associated uncertainty) for future scenarios of sea-level rise (SLR) in Central California. Present-day cliff-edge positions used as the baseline for projections are also included. Projections were made using numerical models and field observations as part of Coastal Storm Modeling System (CoSMoS). Read metadata carefully...

Date published: September 28, 2018

Map Projection On the Web

While some instrument teams provide science-ready versions of their data, many other archives must first be processed by the individual researcher. POW provides users with calibrated cartographic images that can be used for geologic mapping, analysis in a Geographic Image System (GIS), change detection, merging of dissimilar instrument images, and use in a host of other scientific applications...

Filter Total Items: 23
Date published: March 7, 2016

Emergency Assessment of Post-Wildfire Debris-Flow Hazards

We conduct post-fire debris-flow hazard assessments for select fires in the Western U.S. We use geospatial data related to basin morphometry, burn severity, soil properties, and rainfall characteristics to estimate the probability and volume of debris flows that may occur in response to a design storm.

Date published: March 7, 2016

Planetary Geologic Mapping Program

The Planetary Geologic Mapping Program serves the international science community through the production of high-quality and refereed geologic maps of planetary bodies. This program is in coordination between NASA science programs and the USGS Astrogeology Science Center.

Date published: March 7, 2016

Latest Earthquakes Map and List

View recent events or search for past earthquakes. Optimized for mobile and desktop.

Date published: March 7, 2016

Hazard and Fault Maps

View recent events or search for past earthquakes. Optimized for mobile and desktop.

Date published: July 1, 2004

Map showing recent (1997-98 El Niño) and historical landslides, Crow Creek and vicinity, Alameda and Contra Costa Counties, California

By Jeffrey A. Coe,1 Jonathan W. Godt,1 and Pierre Tachker2

1 U.S. Geological Survey, Denver Federal Center, MS 966, Denver, CO 80225
2 Institut Des Sciences Et Techniques De Grenoble, Département Géotechnique, Grenoble, France
Date published: June 1, 2002

Debris-Flow and Flooding Deposits in Coastal Venezuela Associated with the Storm of December 14–16, 1999

By Gerald F. Wieczorek, Matthew C. Larsen, L. Scott Eaton, Benjamin A. Morgan, and J. Luke Blair

Heavy rainfall from the storm of December 14–16, 1999, triggered thousands of shallow landslides on steep slopes of the Sierra de Avila north of Caracas, Venezuela, and caused flooding and massive debris flows in the channels of major drainages that severely damaged coastal communities.

Date published: July 22, 1999

Maps showing locations of damaging landslides caused by El Niño rainstorms, winter season 1997-98, San Francisco Bay region, California

Jonathan W. Godt, Editor.

Pamphlet to accompany Miscellaneous Field Studies Maps MF-2325-A-J

Date published: July 1, 1999

Map and Description of the Active Part of the Slumgullion Landslide, Hinsdale County, Colorado

By Robert W. Fleming and Rex L. Baum, U.S. Geological Survey, and Marco Giardino, Consiglio Nazionale Delle Ricerche, Italy

Date published: July 1, 1997

Landslide Overview Map

This map and the original delineate areas where large numbers of landslides have occurred and areas which are susceptible to landsliding in the conterminous United States.

Filter Total Items: 4,632
Year Published: 2018

Ground motions from induced earthquakes in Oklahoma and Kansas

Improved predictions of earthquake ground motions are critical to advancing seismic hazard analyses and earthquake response. The high seismicity rate from 2009 to 2016 in Oklahoma and Kansas provides an extensive data set for examining the ground motions from these events. We evaluate the ability of three suites of ground‐motion prediction...

Moschetti, Morgan P.; Thompson, Eric M.; Powers, Peter M.; Hoover, Susan M.; McNamara, Daniel E.

Year Published: 2018

Updated California aftershock parameters

Reasenberg and Jones (1989) introduced a statistical model for aftershock rate following a mainshock along with estimates of “generic” California parameter values based on past aftershock sequences. The Reasenberg and Jones (1989) model has been used for decades to issue aftershock forecasts following M≥5">M≥5...

Hardebeck, Jeanne L.; Llenos, Andrea L.; Michael, Andrew J.; Page, Morgan T.; Van Der Elst, Nicholas

Year Published: 2018

Global Earthquake Model (GEM) Risk Map

The Global Earthquake Risk Map (v2018.1) comprises four global maps. The main map presents the geographic distribution of average annual loss (USD) normalized by the average construction costs of the respective country (USD/m2 due to ground shaking in the residential, commercial and industrial building stock, considering contents, structural...

Silva, V.; Amo-Oduro, D.; Calderon, A.; Dabbeek, J.; Despotaki, V.; Martins, L.; Rao, A.; Simionato, M.; Vigano, D.; Yepes, C.; Acevedo, A.; Crowley, H.; Horspool, Nick; Jaiswal, Kishor; Journeay, M.; Pittore, M.
V. Silva, D. Amo-Oduro, A. Calderon, J. Dabbeek, V. Despotaki,L. Martins, A. Rao, M. Simionato, D. Viganò, C. Yepes-Estrada, A. Acevedo, H. Crowley,N. Horspool, K. Jaiswal, M. Journeay, M. Pittore (2018). Global Earthquake Model (GEM) Seismic Risk Map (version 2018.1), DOI: 10.13117/GEM-GLOBAL-SEISMIC-RISK-MAP-2018.

Year Published: 2018

Serpentinite‐rich gouge in a creeping segment of the Bartlett Springs Fault, northern California: Comparison with SAFOD and implications for seismic hazard

An exposure of a creeping segment of the Bartlett Springs Fault (BSF), part of the San Andreas Fault system in northern California, is a ~1.5‐m‐wide zone of serpentinite‐bearing fault gouge cutting through Late Pleistocene fluvial deposits. The fault gouge consists of porphyroclasts of antigorite serpentinite, talc, chlorite, and tremolite‐...

Moore, Diane E.; McLaughlin, Robert J.; Lienkaemper, James J.

Year Published: 2018

Honolulu Magnetic Observatory

Tucked in a grove of thorny mesquite trees, on an ancient coral reef on the south side of the Hawaiian island of Oahu, west of Pearl Harbor, a small unmanned observatory quietly records the Earth’s time-varying magnetic field. The Honolulu Magnetic Observatory is 1 of 14 that the U.S. Geological Survey Geomag­netism Program operates at various...

Love, Jeffrey J.; Finn, Carol A.
Love, J.J., and Finn, C.A., 2018, Honolulu Magnetic Observatory: U.S. Geological Survey Fact Sheet 2018–3029, 2 p.

Year Published: 2018

Image mosaic and topographic maps of Mercury

Map DescriptionsSheet 1: This image mosaic is based on observations acquired by the Mercury Dual Imaging System (MDIS; Hawkins and others, 2009), an instrument on the National Aeronautics and Space Agency (NASA) MErcury Surface, Space ENvironment, Geochemistry, and Ranging (MESSENGER) spacecraft (Solomon and others, 2007). The Mercator projection...

Hunter, Marc A.; Hare, Trent M.; Hayward, Rosalyn K.; Chabot, Nancy L.; Hash, Christopher D.; Denevi, Brett W.; Ernst, Carolyn M.; Murchie, Scott L.; Blewett, David T.; Malaret, Erick R.; Solomon, Sean C.; Becker, Kris J.; Becker, Tammy L.; Weller, Lynn A.; Edmundson, Kenneth L.; Neuman, Gregory A.; Mazarico, Erwan; Perry, Mark E.
Hunter, M.A., Hare, T.M., Hayward, R.K., Chabot, N.L., Hash, C.D., Denevi, B.W., Ernst, C.M., Murchie, S.L., Blewett, D.T., Malaret, E.R., Solomon, S.C., Becker, K.J., Becker, T.L., Weller, L.A., Edmundson, K.L., Neuman, G.A., Mazarico, E., and Perry, M.E., 2018, Image mosaic and topographic maps of Mercury: U.S. Geological Survey Scientific Investigations Map 3404, scale 1:20,000,000 and 1:12,157,366, https://doi.org/10.3133/sim3404.

Year Published: 2018

Ground motions from the 7 and 19 September, 2017 Tehuantepec and Puebla-Morelos, Mexico, earthquakes

The 2017 M">M 8.2 Tehuantepec and M">M 7.1 Puebla‐Morelos earthquakes were deep inslab normal‐faulting events that caused significant damage to several central‐to‐southern regions of Mexico. Inslab earthquakes are an important component of seismicity and seismic hazard in Mexico. Ground‐motion prediction equations (GMPEs...

Sahakian, Valerie J.; Melgar, Diego; Quintanar, Luis; Ramirez-Guzman, Leonardo; Pérez-Campos, Xyoli; Baltay, Annemarie S.
Sahakian, V., D. Melgar, L. Quíntanar, L. Ramírez-Guzman, X. Pérez-Campos, A. Baltay, in press. Ground Motions from the 7 and 19 September Tehuantepec and Puebla-Morelos, Mexico Earthquakes, Bull. of the Seis. Soc. of Am., https://doi.org/10.1785/0120180108

Year Published: 2018

Tropical storm-induced landslide potential using combined field monitoring and numerical modeling

When heavy rainfall, such as that associated with tropical storms, falls on steep hillsides, shallow landslides are often one of the damaging consequences. To assess landslide potential from heavy rainfall, a strategy of combined numerical simulation and field monitoring of variably saturated hillslope conditions is developed. To test the combined...

Chen, Pan; Lu, Ning; Formetta, Giuseppe; Godt, Jonathan W.; Wayllace, Alexandra
Attribution: Natural Hazards
Chen, P., Lu, N., Formetta, G., Godt, J.W., and Wayllace, A., 2018, Tropical storm-induced landslide potential using combined field monitoring and numerical modeling: Journal or Geotechnical and Geoenvironmental Engineering, v. 144, p. 05018002-1-12.

Year Published: 2018

Climate dictates magnitude of asymmetry in soil depth and hillslope gradient

Hillslope asymmetry is often attributed to differential eco‐hydro‐geomorphic processes resulting from aspect‐related differences in insolation. At midlatitudes, polar facing hillslopes are steeper, wetter, have denser vegetation, and deeper soils than their equatorial facing counterparts. We propose that at regional scales, the magnitude in...

Inbar, Assaf; Nyman, Petter; Rengers, Francis K.; Lane, Patrick N. J.; Sheridan, Gary J.

Year Published: 2018

Mars global digital dune database (MGD3)—Composition, stability, and thermal inertia

The Mars Global Digital Dune Database (MGD3) is an online repository that has catalogued dune fields larger than 1 km2 located between latitudes 90° N. and 90° S. The work presented here expands upon previous MGD3 open-file reports, with a new emphasis upon characterizing dune fields through composition, stability, and thermal inertia. Included in...

Gullikson, Amber L.; Hayward, Rosalyn K.; Titus, Timothy N.; Charles, Heather; Fenton, Lori K.; Hoover, Rachael H.; Putzig, Nathaniel E.
Gullikson, A.L., Hayward, R.K., Titus, T.N., Charles, H., Fenton, L.K., Hoover, R., and Putzig, N.E., 2018, Mars global digital dune database (MGD3)—Composition, stability, and thermal inertia: U.S. Geological Survey Open-File Report 2018–1164, 17 p., https://doi.org/10.3133/ofr20181164.

Year Published: 2018

Development of a geodetic component for the U.S. West Coast Earthquake Early Warning System

An earthquake early warning (EEW) system, ShakeAlert, is under development for the West Coast of the United States. This system currently uses the first few seconds of waveforms recorded by seismic instrumentation to rapidly characterize earthquake magnitude, location, and origin time; ShakeAlert recently added a seismic line source algorithm. For...

Murray, Jessica R.; Crowell, Brendan W.; Grapenthin, R.; Hodgkinson, Kathleen; Langbein, John O.; Melbourne, Timothy; Melgar, Diego; Minson, Sarah E.; Schmidt, David A.
Murray, J. R., B. W. Crowell, R. Grapenthin, K. Hodgkinson, J. O. Langbein, T. Melbourne, D. Melgar, S. E. Minson, and D. A. Schmidt (2018). Development of a Geodetic Component for the U. S. West Coast Earthquake Early Warning System, Seismol. Res. Lett.

Year Published: 2018

Reported investments in earthquake mitigation top $73 to $80 billion in the San Francisco Bay Area, California, since the 1989 Loma Prieta earthquake

The purpose of this report is to provide a compilation of structural retrofits and replacements of older buildings and infrastructure in the San Francisco Bay Area that have either been completed since 1989 or that are in progress as of October 2018. For the purposes of this report, all or parts of nine Bay Area counties were included:...

Brocher, Thomas M.; Gefeke, Kerri; Boatwright, John; Knudsen, Keith L.
Brocher, T.M., Gefeke, K., Boatwright, J., and Knudsen, K.L., 2018, Reported investments in earthquake mitigation top \$73 to \$80 billion in the San Francisco Bay Area, California, since the 1989 Loma Prieta earthquake: U.S. Geological Survey Open-File Report 2018–1168, 18 p., https://doi.org/10.3133/ofr20181168.

Filter Total Items: 2,698
city skyline at night with tall buildings and bridge in left foreground lit up
December 31, 2018

The Bay Bridge and the Oakland city skyline

The nighttime Oakland city skyline as seen from San Francisco with the Bay Bridge in the foreground

Image showing seafloor topography, water column image of methane plume, and seismic data.
December 31, 2018

Water Column and Seismic collage

3D Image of a multi-channel seismic (MCS) line showing gas (blue/green) migrating up through fractures in the subsurface, culminating in a 600 meter tall plume of methane gas in the water column that was captured using a Simrad EK60 split beam echo sounder.  Background bathymetry was downloaded from USGS Open-File Report 2012-1266 (

...
 Three-dimensional model of Chimney Bluffs, New York along Lake Ontario
December 31, 2018

Three-dimensional model of Chimney Bluffs, New York along Lake Ontari

Three-dimensional model of Chimney Bluffs, New York along Lake Ontario created from low-altitude digital images collected from an unmanned aerial system (UAS).

Photograph of USGS personnel preparing to dive in Yucatan Peninsula
December 11, 2018

Ready to dive in Yucatan Peninsula

USGS personnel preparing to dive in Yucatan Peninsula.

November 30, 2018

Shaking of Atwood Building, Mw 7.0 November 30, 2018, Anchorage quake

This video presents a visualization of how the Atwood Building in Anchorage, Alaska, shook during the Mw 7.0 November 30, 2018, Anchorage, Alaska, earthquake. The building was instrumented by the U.S. Geological Survey to obtain data to study its behavior and performance during strong shaking. Such data are useful in making decisions about improving the performance of the

...
November 30, 2018

Shaking of Frontier Building, M7.0 November 30, 2018, Anchorage Quake

This video presents a visualization of how the Frontier Building in Anchorage, Alaska, shook during the moment magnitude (Mw) 7.0 November 30, 2018, Anchorage, Alaska, earthquake. The building was instrumented by U.S. Geological Survey to obtain data to study its behavior and performance during strong shaking. Such data are useful in making decisions about improving the

...
November 30, 2018

Shaking of BP Exploration Building, M7 Nov. 30, 2018, Anchorage Quake

This video presents a visualization of how the BP Exploration Building in Anchorage, Alaska, shook during the moment magnitude (Mw) 7.0 November 30, 2018, Anchorage, Alaska, earthquake. The building was instrumented by U.S. Geological Survey (USGS) to obtain data to study its behavior and performance during strong shaking. Such data are useful in making decisions about

...
Ion Chromatograph
November 14, 2018

Ion Chromatograph

 Major ions such as Sulfate and Chloride are measured with an Ion Chromatograph

Image of a well sensor located in a salt marsh
November 8, 2018

Salt Marsh Well Sensor

A well sensor continuously monitors salinity, temperature, and water level in a salt marsh, Cape Cod, MA

Filter Total Items: 407
Date published: October 9, 2018

USGS: Hurricane surge likely to erode 75% of Florida Panhandle beaches

One-fourth of beachfront could be inundated by large storm waves, experts predict

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Michael, visit the USGS Hurricane Michael page at usgs.gov/hurricane-michael.

Date published: October 9, 2018

USGS: Hurricane surge likely to erode 75% of Florida Panhandle beaches

One-fourth of Florida Panhandle beachfront could be inundated by large storm waves, experts predict

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Michael, visit the USGS Hurricane Michael page at https://usgs.gov/hurricane-michael

 

Date published: October 5, 2018

Large underwater experiment in Monterey Canyon shows turbidity currents involve seafloor movement

Large underwater experiment in California’s Monterey Canyon shows that “turbidity currents” are not just currents, but involve movement of the seafloor itself.

Date published: October 1, 2018

Keeping the Lights On in North America

Realtime geoelectric maps during a magnetic storm can assist utility companies with their operations and can help power-grid managers to make decisions that may minimize the impact to their systems.

Date published: September 28, 2018

Magnitude 7.5 Earthquake near Palu, Indonesia

A magnitude 7.5 earthquake struck north of Palu, Indonesia on September 28, 2018 at 6:03 pm local time (10:03 am UTC).

Date published: September 20, 2018

Seismic Research Cruise Provides New Data on U.S. Atlantic Margin Gas Hydrates

Data acquired by the U.S. Geological Survey on the U.S. Atlantic Margin in August 2018 reveal new information about the distribution of gas hydrates in the sector stretching from the upper continental slope to deep water areas offshore New Jersey to North Carolina.

Date published: September 18, 2018

Science for a Risky World: A USGS Plan for Risk Research and Applications – USGS publishes strategic plan for examining risk

USGS explores opportunities to advance its capabilities in risk assessment, mitigation, and communication in new strategic plan.

Date published: September 18, 2018

USGS Science – Leading the Way for Preparedness

Learn About USGS Hazards Science and More About National Preparedness Month: The very nature of natural hazards means that they have the potential to impact a majority of Americans every year.  USGS science provides part of the foundation for emergency preparedness whenever and wherever disaster strikes.

Date published: September 18, 2018

Why Do Giant Rocks Suddenly Fall From Cliffs?

"In Yosemite Valley, rockfalls can happen every four to five days, where boulders that can be larger than your average car or apartment building thunder down steep mountainsides." - Seeker

Date published: September 12, 2018

USGS coastal flood maps assist emergency planning for Hurricane Lane

As Hurricane Lane approached Hawaiʻi, personnel in the Honolulu Emergency Operations Center on Oahu contacted Curt Storlazzi of the USGS Pacific Coastal and Marine Science Center to ask for information on potential coastal flooding that could help them direct emergency-management services to areas of higher risk.

Date published: September 11, 2018

USGS Scientists Prepare for Storms in Three Seas

Field work completed for powerful Hurricane Florence, while experts watch Isaac and Olivia

Editor's note: This story was originally published on Tuesday, Sept. 11 and was updated at noon on Wednesday, Sept. 12.

To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Florence, visit the USGS Hurricane Florence page at https://www.usgs.gov/florence.

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