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Natural Hazards

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Every year in the United States, natural hazards threaten lives and livelihoods and result in billions of dollars in damage. We work with many partners to monitor, assess, and conduct targeted research on a wide range of natural hazards so that policymakers and the public have the understanding they need to enhance preparedness, response, and resilience.

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Reducing Risk

Reducing Risk

USGS scientists develop new products to make science available to the public, emergency managers, and decision-makers. These efforts increase public safety and reduce risk and economic losses caused by natural hazards.

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Hazard Research

Hazard Research

USGS scientists conduct research to understand earth processes and the natural hazards they can pose to society in order to increase public safety and reduce risk and economic loss.

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News

Date published: December 12, 2018

Anchialine Biogeochemistry Research Team returns to the Yucatan Peninsula, Mexico

The Anchialine Biogeochemistry Research Team has returned to the Yucatan Peninsula Mexico to continue investigating how life persists within underwater coastal caves beneath the tropical forest.

Date published: November 30, 2018

2018 Anchorage Earthquake

A magnitude 7.0 earthquake struck north of Anchorage, Alaska, on November 30, 2018, at 8:29 a.m. local time (17:29:28 UTC).  For the most up-to-date information, please visit the USGS event page, and for estimates of casualties and damage, visit the USGS Prompt Assessment of Global Earthquakes for Response (PAGER) website.

Date published: November 19, 2018

The Woods Hole Coastal and Marine Science Center Aerial Imaging and Mapping Group Aids in Monitoring and Mapping the Kīlauea Volcanic Eruption

On May 3, 2018, Kīlauea, one of the world’s most active volcanoes, began an over three-month-long eruption. Tina Neal and the rest of her team at the U.S. Geological Survey Hawaiian Volcano Observatory (HVO) have been spearheading all Kīlauea monitoring and data-analysis efforts, and continue to provide regular updates on the status...

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: 282
Date published: December 14, 2018
Status: Active

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: Active

Myths and Misconceptions

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

Date published: December 14, 2018
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: December 14, 2018
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: December 14, 2018
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: December 14, 2018
Status: Active

Publications

USGS publications on induced seismicity.

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 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...

Date published: November 15, 2018
Status: Active

San Francisco Bay Area - East Bay (BALT1) Site near Castro Valley, CA

Recent Conditions

The instruments were installed in the spring of 2009 and are used to monitor and detect changes in local conditions.  Soil water content and ground water pressure are monitored at two nests on the same hillslope.  Data for the site include:

Contacts: Brian Collins
Date published: November 13, 2018
Status: Active

Using Video Imagery to Study Wave Dynamics: Isla Verde

Four video cameras overlook the coast at Isla Verde in San Juan, Puerto Rico. Two of them focus on the shoreline: Camera 1 looks at the nearby beach and eastward along the shore, and Camera 2 looks farther away to the eastern end of the beach. The other two look out across the reefs: Camera 3 to the north-northwest, and Camera 4 to the northeast.

Filter Total Items: 131
Date published: December 18, 2018

Oceanographic, Atmospheric and Water-Quality Measurements Sandwich Town Neck Beach, Massachusetts, 2017

These measurements provide short-duration datasets of waves, tides, and overwash from portable pressure sensors deployed on the beach during major winter storms on these dates: January 23-26; February 9-10; February 13-15; and March 13-15, 2017. Longer datasets were obtained from sensors on a platform deployed on the seafloor north of the beach in seven meters depth.

Date published: December 17, 2018

Oceanographic and Water Quality Measurements Collected in Grand Bay, Alabama/Mississippi, August 2016 – January 2017

Suspended-sediment transport is a critical element governing the geomorphology of tidal marshes and estuaries. Marshes rely both on organic material and inorganic sediment deposition to maintain their elevation relative to sea-level. Additionally, horizontal marsh extent is altered by lateral erosion and accretion. 

Date published: December 10, 2018

Massachusetts Shoreline Change Project: A GIS Compilation of Vector Shorelines for the 2018 update

The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. The shoreline position and change rate are used to inform management decisions regarding the erosion of coastal resources. 

Date published: December 10, 2018

Geospatial Data Layers of Shallow Geology, Sea-Floor Texture, and Physiographic Zones from the Inner Continental Shelf of Martha’s Vineyard from Aquinnah to Wasque Point, and Nantucket from Eel Point to Great Point

Geologic, sediment texture, and physiographic zone maps characterize the sea floor south and west of Martha's Vineyard and north of Nantucket, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. 

Date published: December 10, 2018

Elevation of marsh units in Fire Island National Seashore and Central Great South Bay salt marsh complex, New York

Elevation distribution in the Fire Island National Seashore and Central Great South Bay salt marsh complex is given in terms of mean elevation of conceptual marsh units defined by Defne and Ganju (2018). The elevation data is based on the 1-meter resolution Coastal National Elevation Database (CoNED).

Date published: December 10, 2018

Conceptual marsh units for Fire Island National Seashore and central Great South Bay salt marsh complex, New York

The salt marsh complex of Fire Island National Seashore (FIIS) and central Great South 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

Date published: December 10, 2018

Temporal hydrologic and chemical records from the Ox Bel Ha cave network within the coastal aquifer of the Yucatan Peninsula, from January 2015 to January 2016

Natural cave passages penetrating a coastal aquifer in the Yucatan Peninsula (Mexico) were accessed to investigate how regional meteorology and hydrology control methane dynamics in karst subterranean estuaries. Three field trips were carried out in January 2015, June 2015, and January 2016 to obtain year-long high-resolution temporal records of water chemistry and environmental parameters

Date published: November 7, 2018

Dune Metrics for the Massachusetts Coast as Derived From 2013–14 Topographic Lidar Data

 This data release, which is part of the 2018 update, defines the position and elevation of the most seaward dune crest and toe along the Massachusetts coast as derived from 2013–14 lidar data. In the absence of a dune, the peak of the berm or the seaward edge of a bluff, headland, or hard structure (for example, a seawall, road, or parking lot) was chosen as a proxy for the dune crest. 

Date published: November 7, 2018

High-resolution geophysical data collected in Lake Powell, Utah-Arizona, U.S. Geological Survey Field Activity 2017-049-FA

High-resolution geophysical mapping of Lake Powell in the Glen Canyon National Recreation Area in Utah and Arizona was conducted between October 8 and November 15, 2017, as part of a collaborative effort between the U.S. Geological Survey and the Bureau of Reclamation to provide high-quality data needed to reassess the area-capacity tables for the Lake Powell reservoir.

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.

Filter Total Items: 23
Date published: September 17, 2018

Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in Quadrangle 6 of the Stellwagen Bank National Marine Sanctuary Region offshore of Boston, Massachusetts

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration's National Marine Sanctuary Program, has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993.

Date published: April 16, 2018

Earthquake outlook for the San Francisco Bay region 2014–2043

Using information from recent earthquakes, improved mapping of active faults, and a new model for estimating earthquake probabilities, the 2014 Working Group on California Earthquake Probabilities updated the 30-year earthquake forecast for California. They concluded that there is a 72 percent probability (or likelihood) of at least one earthquake of magnitude 6.7 or greater striking somewhere in

Attribution: Natural Hazards
Date published: April 11, 2018

Digital database of recently active traces of the Hayward Fault, California

This map shows the location of and evidence for recent movement on active fault traces within the Hayward Fault Zone, California.

Attribution: Natural Hazards
Date published: April 11, 2018

HayWired aftershock (M> 5) ShakeMaps

The maps in this archive display estimated intensities and ground motions for the largest earthquakes in the HayWired aftershock sequence. The aftershock sequence follows the HayWired M7.0 mainshock that is imagined to occur on April 18, 2018 along the Hayward Fault.These maps have been used in analyses of the HayWired scenario.

Attribution: Natural Hazards
Date published: April 11, 2018

Ground motion and regional information of the M 7.0 mainshock

The HayWired scenario depicts a hypothetical M7.0 earthquake on California’s Hayward Fault. This site includes an interactive map showing fault traces and ShakeMap contours, information on the tectonic setting of the Hayward Fault and fault rupture history; and a USGS ShakeMap, which provides ground motion information for the HayWired scenario mainshock.

Attribution: Natural Hazards
Date published: March 23, 2018

The HayWired Scenario: An Urban Earthquake in a Connected World - A Geonarrative

What might it be like the next time the Hayward Fault has a large earthquake? A geonarrative and related imagery examines a hypothetical earthquake, the magnitude 7.0 HayWired earthquake scenario.

Date published: October 16, 2017

Regional Conductivity Maps

Location of 1D Earth Resistivity Models with respect to Physiographic Regions of the USA

Date published: May 26, 2017

Data from Earthquake-Induced Landslide Hazards for a M7.0 Scenario Earthquake on the Hayward Fault

The seismic-landslide probability map covers the counties of Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Santa Cruz, Solano, and Sonoma. The slope failures are triggered by a hypothetical earthquake with a moment magnitude of 7.0 occurring on April 18, 2018, at 4:18 p.m. on the Hayward Fault in the east bay part of California’s San Francisco Bay region.

Attribution: Natural Hazards
Date published: March 15, 2016

Map of America's Submerged Lands

Links to publications that contain maps of the sea floor or lake beds and the digital data used to create them.

Date published: March 7, 2016

Coastal and Marine Geology Program Interactive Maps

This portal is a “go to” source for maps related to ocean and coastal mapping. Information is organized by geography or region, by theme, and by the year data was published.

Date published: March 7, 2016

Interactive Flood Map

Maps of flood and high flow conditions within the U.S.

Date published: March 7, 2016

Observatories

Map of USGS Magnetic observatory locations.

Filter Total Items: 4,539
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.

Year Published: 2018

Erratum to The 2013–2016 induced earthquakes in Harper and Sumner Counties, southern Kansas

The authors identified two sets of minor errors in the paper by Rubinstein et al. (2018), which are corrected here.

Rubinstein, Justin L.; Ellsworth, William L.; Dougherty, Sara L.

Year Published: 2018

Interseismic ground deformation and fault slip rates in the greater San Francisco Bay Area from two decades of space geodetic data

The detailed spatial variations of strain accumulation and creep on major faults in the northern San Francisco Bay Area (North Bay), which are important for seismic potential and evaluation of natural hazards, remain poorly understood. Here we combine interferometric synthetic aperture radar data from the ERS‐1/2 and Envisat satellites between...

Wu, Songbo; Nadeau, Robert; Ding, Xiaoling; Xu, Wenbin; Wu, Songbo; Materna, Kathryn; Nadeau, Robert; Floyd, Michael; Funning, Gareth J.; Chaussard, Estelle; Johnson, Christopher W.; Murray, Jessica R.; Ding, Xiaoling; Burgmann, Roland
Xu, W., S. Wu, K. Materna, R. Nadeau, M. Floyd, G. Funning, E. Chaussard, C. Johnson, J. R. Murray, X. Ding, and R. Bürgmann (2018), Interseismic ground deformation and fault slip rates in the greater San Francisco Bay Area from two decades of space geodetic data, J. Geophys. Res.

Filter Total Items: 11
Date published: August 23, 2018

SEA-MAT: Matlab Tools for Oceanographic Analysis

A collaborative effort to organize and distribute Matlab tools for the Oceanographic Community

Date published: August 13, 2018

bi-transect-extractor

This package is used to calculate coastal geomorphology variables along shore-normal transects. The calculated variables are used as inputs for modeling geomorphology using a Bayesian Network (BN). 

Date published: June 25, 2018

iPlover

iPlover was developed by the U.S. Geological Survey Woods Hole Coastal and Marine Science Center and the USGS Center for Integrated Data Analytics.  It is used by trained and vetted personnel to record information about habitats on coastal beaches and he environment surrounding them. 

Date published: February 28, 2018

THRESH

Software for tracking rainfall thresholds for landslide and debris-flow occurrence, user manual.

Date published: April 26, 2016

Earthquake Software

Designed to facilitate the study of earthquakes, faults, and seismic related events.

Date published: April 26, 2016

Landslide software

Various software designed for landslide assessments and modeling.

Attribution: Natural Hazards
Date published: April 10, 2015

Scoops3D

Scoops3D is software to analyze three-dimensional slope stability throughout a digital landscape.

Date published: November 12, 2014

SLAMMER

SLAMMER is a Java program that facilitates performing a variety of sliding-block analyses to evaluate seismic slope performance.

Date published: October 20, 2009

TRIGRS

A Fortran Program for Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Analysis, Version 2.0.

Date published: June 18, 2001

PTCOUNT

A Fortran-77 Computer Program to Calculate the Areal Distribution of Mapped Data Points Using Count-Circle Methodology.

Date published: April 4, 2000

JanbuGS, BishopGS, and FelleniusGS

Fortran-77 programs for limit-equilibrium slope-stability analysis.

Filter Total Items: 2,696
 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).

Displaying fixed bin options for rates of change
December 31, 2018

Displaying fixed bin options for rates of change

Displaying fixed bin options (left) for rates of change for an example dataset (LRR, EPR, WLR), and scaled to data (right) (NSM).

Map showing the locations of all U.S. volcanoes
December 31, 2018

Map of volcano threat category designated by color

Map showing the locations of all U.S. volcanoes with their threat category designated by color. Very high threat is red, high is orange, moderate is yellow, low is green, and very low is blue. 

Piping Plover habitat on Cedar Island shown here off of the DelMarVa Peninsula.
December 31, 2018

Piping Plover Habitat, Cedar Island

The beach-dependent shorebirds project at the Woods Hole Coastal and Marine Science Center models current and future habitat availability for nesting shorebirds in an effort to map current and likely future habitat availability on a range of sites along the U.S. Atlantic coast. Sites include beaches with minimal human-presence, such Cedar Island shown here off of the

...
Data visualization with scaled options applied
December 31, 2018

Data visualization with scaled options applied

Data visualization with (A) fixed and (B) scaled options applied. Examples of NSM and SCE are also displayed (C and D respectively). The data itself has not changed – only the scaling and statistic selected through the DSAS Data Visualization tool.

Image showing the deployment of seismic equipment from a research vessel, examples of seismic data, and examples of seismic
December 31, 2018

Seismic Collage

Image showing a collage of examples of multi-channel and single-channel seismic data collected by the USGS, seismic equipment deployed from a research vessel, and seismic equipment on a research vessel.  These data are critical to the CMG Program as they define the geology in marine and coastal environments.

Example of a section of DSAS summary report highlighting the use of DSAS_group to organize output statistics.
December 31, 2018

DSAS Summary Report

 Example of a section of DSAS summary report highlighting the use of DSAS_group to organize output statistics.

Brown landscape with volcano in the background
December 31, 2018

Mount Shasta, a steep-sided Cascade Range stratovolcano in Northern Ca

Mount Shasta, a steep-sided Cascade Range stratovolcano in Northern California, looms above Little Glass Mountain, a thick obsidian flow erupted from the Medicine Lake shield volcano about 1,000 years ago. These are just two of the young volcanic areas monitored by the USGS California Volcano Observatory. USGS photo.

A USGS technician services a ShakeAlert sensor station in the San Francisco Bay area
December 31, 2018

ShakeAlert sensor station being serviced by USGS personnel

A USGS electronics technician performs maintenance on a ShakeAlert Earthquake Early Warning (EEW) sensor station, located in the San Francisco Bay Area. ShakeAlert station components include strong-motion accelerometers, solar panel and battery power systems, and communications & telemetry equipment for communication with the wider ShakeAlert network. 

 Department of Interior UAS pilots
December 31, 2018

UAS pilots at Kilauea

 Department of Interior UAS pilots from left to right – Elizabeth Pendleton (USGS, Woods Hole, MA), Colin Milone (Office of Aviation Services, AK), John Vogel (USGS; Flagstaff, AZ), Sandy Brosnahan (USGS, Woods Hole, MA), Brandon Forbes (USGS; Tuscon, AZ), Chris Holmquist-Johnson

...
Image showing example of seafloor images and deployment of the SEABOSS sampler.
December 31, 2018

SEABOSS Collage

SEABed Observation and Sampling System (SEABOSS) (center image) and the MiniSEABOSS (right) designed for rapid, inexpensive, and effective collection of seabed imagery (photographs and video) as well sediment samples from the coastal/inner-continental shelf regions.  Images from coastal Massachusetts show purple algae-encrusted cobbles and boulders covered with sea-stars (

...
Filter Total Items: 405
Date published: December 12, 2018

Anchialine Biogeochemistry Research Team returns to the Yucatan Peninsula, Mexico

The Anchialine Biogeochemistry Research Team has returned to the Yucatan Peninsula Mexico to continue investigating how life persists within underwater coastal caves beneath the tropical forest.

Date published: November 30, 2018

2018 Anchorage Earthquake

A magnitude 7.0 earthquake struck north of Anchorage, Alaska, on November 30, 2018, at 8:29 a.m. local time (17:29:28 UTC).  For the most up-to-date information, please visit the USGS event page, and for estimates of casualties and damage, visit the USGS Prompt Assessment of Global Earthquakes for Response (PAGER) website.

Date published: November 19, 2018

The Woods Hole Coastal and Marine Science Center Aerial Imaging and Mapping Group Aids in Monitoring and Mapping the Kīlauea Volcanic Eruption

On May 3, 2018, Kīlauea, one of the world’s most active volcanoes, began an over three-month-long eruption. Tina Neal and the rest of her team at the U.S. Geological Survey Hawaiian Volcano Observatory (HVO) have been spearheading all Kīlauea monitoring and data-analysis efforts, and continue to provide regular updates on the status...

Date published: November 9, 2018

USGS Working to Restore Streamgages

For questions about a streamgage in your state, please contact your local USGS water science center; contacts can be found at https://water.usgs.gov/key_officials.html.

Date published: October 18, 2018

Before and After: Coastal Change Caused by Hurricane Michael

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 17, 2018

The Hayward Fault—Is It Due for a Repeat of the Powerful 1868 Earthquake?

By Thomas M. Brocher, Jack Boatwright, James J. Lienkaemper, Carol S. Prentice, David P. Schwartz, and Howard Bundock

Drawn from: USGS Fact Sheet 2018-3052

Date published: October 16, 2018

The Great ShakeOut! -- 2018 Edition

Do you know what to do the moment the ground starts shaking? Drop, Cover, and Hold On!

Date published: October 15, 2018

Debris - Flow Forecasts Before Wildfires

USGS scientists have been pursuing a way to assess debris flow hazards before a fire occurs.

Date published: October 15, 2018

GeoGirls Rock! USGS women encourage and support the next generation of scientists

Mount St. Helens volcano loomed in the distance as 25 middle-school “GeoGirls” signed in, received a name tag, dropped their overnight gear and gathered in a grassy open space to meet camp staff, women scientists and volunteers.

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.

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