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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: 274
Date published: August 7, 2018
Status: Active

Download Data

USGS Geomagnetism Program data are made available as-is and without any guarantees of continuity and quality.

Date published: July 31, 2018
Status: Active

Overview

Space climatology is concerned with longer-term changes in the space environment that are driven almost entirely by changes in solar output. 

Contacts: Jeffrey J Love
Date published: July 27, 2018
Status: Completed

Geologic Framework for Seismic Hazards in Central Virginia

The Central Virginia seismic zone (CVSZ) comprises an area of ~13,000 km2 in the central Virginia Piedmont; seismicity in this zone is relatively frequent, but generally mild in magnitude. The August 2011 event was the largest temblor recorded in the CVSZ since the development of modern seismic monitoring and highlighted how little we actually know about the CVSZ, including: 1) the...

Contacts: Mark Carter
Date published: July 25, 2018
Status: Active

Introduction to Geomagnetism

With data provided by magnetic observatories, geophysicists can gain insights into our planet’s interior and nearby space environment without even leaving the ground.

This introduction to geomagnetism is from "Magnetic monitoring of earth and space" (PDF) by Jeffrey Love, published in Physics Today 61, 2, 31...

Contacts: Jeffrey J Love
Date published: July 25, 2018
Status: Active

More info - Space Weather Applications

USGS-Dst Index, Electric Field Estimates, Pulsation Indices

Date published: July 25, 2018
Status: Active

Overview

Examples of extreme-event work published by USGS scientists are on the Publications tab.

    Contacts: Jeffrey J Love
    Date published: July 24, 2018
    Status: Active

    Coastal Change Processes- South Carolina

    Understanding the processes that control local sediment fluxes is critical in evaluating regional vulnerability to coastal erosion. This project task involves the analysis of observational data collected as part of the South Carolina Coastal Erosion Study (SCCES), and additional coastal process modeling for the Grand Strand region....

    Date published: July 24, 2018
    Status: Active

    Coastal Change Processes- Cape Hatteras, NC

    The most prominent morphologic features along the shoreline of the Carolinas are its four capes. From north to south, Cape Hatteras, Cape Lookout, Cape Fear, and Cape Romain segment the coastline into the northern outer banks, Raliegh Bay, Onslo Bay, and Long Bay regions. Continental shelf areas seaward of the capes are characterized by large, highly dynamic shoal complexes, which influence...

    Date published: July 24, 2018
    Status: Active

    Coastal Change Processes- Fire Island, NY

    Fire Island, a 50-km long barrier-island system between Fire Island Inlet and Moriches Inlet, attracts significant tourism, includes federal, state, and county parks, contains a number of coastal communities, provides storm damage protection to the adjacent heavily populated mainland, and supports a distinct barrier island ecosystem, all of which are affected by coastal change.  Mitigating the...

    Date published: July 23, 2018
    Status: Active

    Toro Negro, Puerto Rico

    Recent Conditions

    Instruments and are used to monitor and detect changes in local conditions, including:

    Date published: July 23, 2018
    Status: Active

    Utuado, Puerto Rico

    Recent Conditions

    Instruments and are used to monitor and detect changes in local conditions, including:

    Date published: July 23, 2018
    Status: Active

    Tucson (TUC)

    The Geomagnetism Program first established an observatory near Tucson in 1910 on what is now Morris K. Udall Regional Park. The current site, in the Saguaro National Park, was installed in 1996.

    Filter Total Items: 123
    Date published: February 20, 2018

    Bathymetry and Backscatter Intensity of the Sea Floor South of Long Island, New York

    Surveys of the bathymetry and backscatter intensity of the sea floor south of Long Island, New York, were carried out in November 1998 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. 

    The area was mapped by the U.S. Geological Survey with support from the Canadian Hydrographic Service and the University of New Brunswick.

    Date published: February 20, 2018

    Bathymetry and backscatter intensity of the sea floor of the Historic Area Remediation Site in 1996, 1998, and 2000

    Surveys of the bathymetry and backscatter intensity of the sea floor of the Historic Area Remediation Site (HARS), offshore of New York and New Jersey, were carried out in 1996, 1998, and 2000 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed

    Date published: February 20, 2018

    Bathymetry, backscatter intensity, and geomorphology of the sea floor of the Hudson Canyon and adjacent slope and rise

    The Hudson Canyon begins on the outer continental shelf off the eastern coast of the United States at about 100-meters (m) water depth and extends offshore southeastward across the continental slope and rise. A multibeam survey was carried out in 2002 to map the bathymetry and backscatter intensity of the sea floor of the Hudson Canyon and adjacent slope and rise.

    Date published: February 20, 2018

    Bathymetry and backscatter intensity of the sea floor of the Atlantic Beach artificial reef, offshore of New York

    The Atlantic Beach artificial reef, located on the sea floor 3 nautical miles south of Atlantic Beach, New York in about 20 meters water depth, was built to create habitat for marine life.  The data from this survey are bathymetry, backscatter intensity, and navigation trackline.

    Date published: February 20, 2018

    Bathymetry and backscatter intensity of the sea floor of the Sandy Hook artificial reef, offshore of New Jersey

    The Sandy Hook artificial reef, located on the sea floor offshore of Sandy Hook, New Jersey was built to create habitat for marine lie. The collected data from this cruise are bathymetry, backscatter intensity, and navigation trackline. 

    Date published: February 20, 2018

    Sediment Texture and Geomorphology of the Sea Floor from Fenwick Island, Maryland to Fisherman's Island, Virginia

    These data are a qualitatively derived interpretive polygon shapefile defining surficial sediment type and distribution, and geomorphology, for nearly 1,400 square kilometers of sea floor on the inner-continental shelf from Fenwick Island, Maryland to Fisherman’s Island, Virginia, USA.

    Date published: February 15, 2018

    Coastal Groundwater Chemical Data from the North and South Shores of Long Island, New York

    Groundwater data were collected in the spring and fall of 2008 from three sites representing different geological settings and biogeochemical conditions within the surficial glacial aquifer of Long Island, NY. 

    Date published: February 15, 2018

    National Assessment of Shoreline Change: A GIS compilation of Updated Vector Shorelines and Associated Shoreline Change Data for the Southeast Atlantic Coast

    U.S. Geological Survey (USGS) is conducting a national assessment of coastal change hazards.  One component of this research effort, the National Assessment of Shoreline Change Project documents changes in shoreline position as a proxy for coastal change. 

    Date published: February 15, 2018

    National Assessment of Shoreline Change: A GIS compilation of Updated Vector Shorelines and Associated Shoreline Change Data for the Gulf of Mexico Coast

    U.S. Geological Survey (USGS) is conducting a national assessment of coastal change hazards.  One component of this research effort, the National Assessment of Shoreline Change Project, documents changes in shoreline position as a proxy for coastal change. Shoreline position is an easily understood feature representing the historical location of a beach position through time. 

    Date published: February 15, 2018

    Topographic, imagery, and raw data associated with unmanned aerial systems (UAS) flights over Black Beach, Falmouth, Massachusetts on 18 March 2016

    The U.S. Geological Survey worked in collaboration with members of the Marine Biological Laboratory and Woods Hole Analytics at Black Beach, in Falmouth, Massachusetts to explore scientific research demands on UAS technology for topographic and habitat mapping applications. 

    Date published: February 15, 2018

    Data and calculations to support the study of the sea-air flux of methane and carbon dioxide on the West Spitsbergen margin in June 2014

    This dataset collected on the West Spitsbergen margin during U.S. Geological Survey Coastal and Marine Geology Program Field Activity 2014-013-FA, which was carried out in conjunction with the University of Tromso and the GEOMAR Helmholtz Centre for Ocean Research Kiel on the R/V Helmer Hanssen.

    Date published: February 15, 2018

    Water column physical and chemical properties of Cenote Bang, a component of the Ox Bel Ha cave network within the subterranean estuary coastal aquifer of the Yucatan Peninsula, from December 2013 to January 2016

    This dataset, collected during four field events during U.S. Geological Survey (USGS) Coastal and Marine Geology Program Field Activities 2015-013-FA and 2016-003-FA in conjunction with Texas A&M University reports geochemical properties of the water column from Cenote Bang, a component of the Ox Bel Ha cave network that is located 5 km inland from the coast. 

    Filter Total Items: 4,525
    Year Published: 2018

    Using stereo satellite imagery to account for ablation, entrainment, and compaction in volume calculations for rock avalanches on Glaciers: Application to the 2016 Lamplugh Rock Avalanche in Glacier Bay National Park, Alaska

    The use of preevent and postevent digital elevation models (DEMs) to estimate the volume of rock avalanches on glaciers is complicated by ablation of ice before and after the rock avalanche, scour of material during rock avalanche emplacement, and postevent ablation and compaction of the rock avalanche deposit. We present a model to account for...

    Bessette-Kirton, Erin; Coe, Jeffrey A.; Zhou, Wendy
    Bessette-Kirton, E. K., Coe, J. A., & Zhou, W. (2018). Using stereo satellite imagery to account for ablation, entrainment, and compaction in volume calculations for rock avalanches on glaciers: Application to the 2016 Lamplugh rock avalanche in Glacier Bay National Park, Alaska. Journal of Geophysical Research: Earth Surface,123, 622–641.

    Year Published: 2018

    ShakeMap-based prediction of earthquake-induced mass movements in Switzerland calibrated on historical observations

    In Switzerland, nearly all historical Mw ~ 6 earthquakes have induced damaging landslides, rockslides and snow avalanches that, in some cases, also resulted in damage to infrastructure and loss of lives. We describe the customisation to Swiss conditions of a globally calibrated statistical approach originally developed to rapidly assess...

    Cauzzi, Carlo; Fah, Donat; Wald, David J.; Clinton, John; Losey, Stephane; Wiemer, Stefan
    Carlo Cauzzi & Donat Fäh & David J. Wald & John Clinton & Stéphane Losey & Stefan Wiemer, 2018. "ShakeMap-based prediction of earthquake-induced mass movements in Switzerland calibrated on historical observations," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 92(2), pages 1211-1235, June.

    Year Published: 2018

    Regional spectral analysis of moderate earthquakes in northeastern North America—Final Report to the Nuclear Regulatory Commission, Project V6240, Task 3

    We analyze the Fourier spectra of S+Lg+surface wave groups from the horizontal and vertical components of broadband and accelerogram recordings of 120 small and moderate (2< Mw <6) earthquakes recorded by Canadian and American stations sited on rock at distances from 3 to 600 kilometers. There are seven Mw 4.0–4.5, six Mw 4.5–5.0, and...

    Boatwright, Jack
    Boatwright, J., 2018, Regional spectral analysis of moderate earthquakes in northeastern North America—Final report to the Nuclear Regulatory Commission, project V6240, task 3: U.S. Geological Survey Open-File Report 2018–1073, 39 p., https://doi.org/10.3133/ofr20181073.

    Year Published: 2018

    Analysis of mean seismic ground motion and its uncertainty based on the UCERF3 geologic slip rate model with uncertainty for California

    The Uniform California Earthquake Rupture Forecast v.3 (UCERF3) model (Field et al., 2014) considers epistemic uncertainty in fault‐slip rate via the inclusion of multiple rate models based on geologic and/or geodetic data. However, these slip rates are commonly clustered about their mean value and do not reflect the broader distribution of...

    Zeng, Yuehua
    Zeng, Y. (2018). Analysis of Mean Seismic Ground Motion and Its Uncertainty Based on the UCERF3 Geologic Slip Rate Model with Uncertainty for California, SRL, doi: 10.1785/0220170114.

    Year Published: 2018

    Landslides triggered by the 14 November 2016 Mw 7.8 Kaikōura Earthquake, New Zealand

    The 14 November 2016 Mw">MwMw 7.8 Kaikōura earthquake generated more than 10,000 landslides over a total area of about 10,000&#x2009;&#x2009;km2">10,000  km210,000  km2, with the majority concentrated in a smaller area of about 3600&#x2009;&#x2009;km2">3600  km23600  km2. The largest landslide triggered...

    Massey, C.; Townsend, D.; Rathje, Ellen M.; Allstadt, Kate E.; Lukovic, B.; Kaneko, Yoshihiro; Bradley, Brendon A.; Wartman, J.; Jibson, Randall W.; Petley, D. N.; Horspool, Nick; Hamling, I.; Carey, J.; Cox, S.; Davidson, John; Dellow, S.; Godt, Jonathan W.; Holden, Christopher; Jones, Katherine D.; Kaiser, Anna E.; Little, M.; Lyndsell, B.; McColl, S.; Morgenstern, R.; Rengers, Francis K.; Rhoades, D.; Rosser, B.; Strong, D.; Singeisen, C.; Villeneuve, M.
    C. Massey, D. Townsend, E. Rathje, K. E. Allstadt, B. Lukovic, Y. Kaneko, B. Bradley, J. Wartman, R. W. Jibson, D. N. Petley, N. Horspool, I. Hamling, J. Carey, S. Cox, J. Davidson, S. Dellow, J. W. Godt, C. Holden, K. Jones, A. Kaiser, M. Little, B. Lyndsell, S. McColl, R. Morgenstern, F. K. Rengers, D. Rhoades, B. Rosser, D. Strong, C. Singeisen, M. Villeneuve; Landslides Triggered by the 14 November 2016 Mw 7.8 Kaikōura Earthquake, New Zealand. Bulletin of the Seismological Society of America doi: https://doi.org/10.1785/0120170305

    Year Published: 2018

    Laboratory tests of three Z‐Land Fairfield Nodal 5‐Hz, three‐component sensors

    We conduct a number of laboratory tests at the Albuquerque Seismological Laboratory to verify the self‐noise and fidelity in which 3 three‐component Fairfield Nodal Z‐Land, Generation 2, 5‐Hz sensors are able to record seismic signals. In addition to the incoherent self‐noise of the sensors, we estimate the sensitivity of the units in digital...

    Ringler, Adam T.; Anthony, Robert E.; Karplus, M.S; Holland, Austin; Wilson, David C.
    Ringler, A. T., R. E. Anthony, M. S. Karplus, A. A. Holland, and D. C. Wilson (2018). Laboratory Tests of Three Z-Land Fairfield Nodal 5-Hz, Three-Component Sensors, Seismological Research Letters,

    Year Published: 2018

    DDT and related compounds in pore water of shallow sediments on the Palos Verdes Shelf, California, USA

    For nearly two and a half decades following World War II, production wastes from the world's largest manufacturer of technical DDT (1-chloro-4-[2,2,2-trichloro-1-(4-chlorophenyl)ethyl]benzene) were discharged into sewers of Los Angeles County. Following treatment, the wastes were released via a submarine outfall system to nearshore coastal waters...

    Eganhouse, Robert P.; DiFilippo, Erica L.; Pontolillo, James; Orem, William H.; Hackley, Paul C.; Edwards, Brian
    Robert P. Eganhouse, Erica DiFilippo, James Pontolillo, William Orem, Paul Hackley, Brian D. Edwards, DDT and related compounds in pore water of shallow sediments on the Palos Verdes Shelf, California, USA, Marine Chemistry, Volume 203, 2018, pages 78-90.

    Year Published: 2018

    Ensemble smoothed seismicity models for the new Italian Probabilistic Seismic Hazard Map

    We develop a long‐term (a few decades or longer) earthquake rate forecast for Italy based on smoothed seismicity for incorporation in the 2017–2018 Italian Probabilistic Seismic Hazard Maps (IPSHM). Because the earthquake rate models from previous IPSHM were computed using source zones that were drawn around seismicity and tectonic provinces, the...

    Akinci, Aybige; Moschetti, Morgan P.; Taroni, Matteo
    Akinci, A., Moschetti, M. P., & Taroni, M. (2018). Ensemble smoothed seismicity models for the new Italian probabilistic seismic hazard map. Seismological Research Letters. doi:10.1785/0220180040

    Year Published: 2018

    Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data

    We reexamine the geometry of the causative fault structure of the 1989 moment-magnitude-6.9 Loma Prieta earthquake in central California, using seismic-reflection, earthquake-hypocenter, and magnetic data. Our study is prompted by recent interpretations of a two-part dip of the San Andreas Fault (SAF) accompanied by a flower-like structure in the...

    Zhang, Edward; Fuis, Gary S.; Catchings, Rufus D.; Scheirer, Daniel S.; Goldman, Mark; Bauer, Klaus
    Zhang, E., Fuis, G.S., Catchings, R.D., Scheirer, D.S., Goldman, M., and Bauer, K., 2018, Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data: U.S. Geological Survey Open-File Report 2018–1093, 35 p., https://doi.org/10.3133/ofr20181093.

    Year Published: 2018

    On the feasibility of real-time mapping of the geoelectric field across North America

    A review is given of the present feasibility for accurately mapping geoelectric fields across North America in near-realtime by modeling geomagnetic monitoring and magnetotelluric survey data. Should this capability be successfully developed, it could inform utility companies of magnetic-storm interference on electric-power-grid systems. That real...

    Love, Jeffrey J.; Rigler, E. Joshua; Kelbert, Anna; Finn, Carol A.; Bedrosian, Paul A.; Balch, Christopher C.
    Love, J.J., Rigler, E.J., Kelbert, Anna, Finn, C.A., Bedrosian, P.A., and Balch, C.C., 2018, On the feasibility of real-time mapping of the geoelectric field across North America: U.S. Geological Survey Open-File Report 2018-1043, 16 p., https://doi.org/10.3133/ofr20181043.

    Year Published: 2018

    Injection-induced moment release can also be aseismic

    The cumulative seismic moment is a robust measure of the earthquake response to fluid injection for injection volumes ranging from 3100 to about 12 million m3. Over this range, the moment release is limited to twice the product of the shear modulus and the volume of injected fluid. This relation also applies at the much smaller injection volumes...

    McGarr, Arthur; Barbour, Andrew J.
    McGarr, A., & Barbour, A. J. (2018). Injection-induced moment release can also be aseismic. Geophysical Research Letters, 45. https://doi.org/10.1029/2018GL078422

    Year Published: 2018

    The thermophysical properties of the Bagnold Dunes, Mars: Ground truthing orbital data

    We compare the thermophysical properties and particle sizes derived from the Mars Science Laboratory rover's Ground Temperature Sensor of the Bagnold dunes, specifically Namib dune, to those derived orbitally from Thermal Emission Imaging System, ultimately linking these measurements to ground truth particle sizes determined from Mars Hand Lens...

    Edwards, Christopher S.; Piqueux, Sylvain; Hamilton, Victoria E.; Fergason, Robin L.; Herkenhoff, Kenneth E.; Vasavada, Ashwin R.; Bennett, Kristen A.; Sacks, Leah; Lewis, Kevin; Smith, Michael D.

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    USGS personnel configuring and deploying the streamer of hydrophone receivers on the R/V Hugh R. Sharp
    August 9, 2018

    USGS personnel configuring and deploying the streamer of hydrophone

    USGS personnel configuring and deploying the streamer of hydrophone receivers on the R/V Hugh R. Sharp during the MATRIX cruise.  In foreground from left to right are Nathan Miller, Wayne Baldwin, and Eric Moore from the USGS Woods Hole Coastal and Marine Science Center.

    Photograph of USGS scientist setting a target in Great Marsh, Sandy Neck, Beach, Cape Cod, MA
    August 8, 2018

    Setting Targets in the Great Marsh, Cape Cod, MA

    USGS Unmanned Aerial Systems (UAS) pilot, Elizabeth Pendleton, setting a target in Great Marsh, Sandy Neck Beach, Cape Cod, Massachusetts

    Photograph of USGS drone pilots standing on a sand dune at Sandy Neck Beach, Cape Cod, MA
    August 8, 2018

    Dunes and Drone Pilots

    Sandy Brosnahan (left) and Ellizabeth Pendleton (right), Woods Hole Coastal and Marine Science Center Unmanned Aerial Systems (UAS) pilots flying drones at Sandy Neck Beach, Cape Cod, MA.  

    Photograph of Woods Hole Coastal and Marine Science Center UAS pilots walking on Great Marsh, Cape Cod, MA
    August 8, 2018

    Great Marsh, Cape Cod, MA

    Woods Hole Coastal and Marine Science Center Aerial Imaging and Mapping (AIM) group on Great Marsh, Cape Cod, MA

    Photograph of USGS drone pilots standing on a dune at Sandy Neck Beach, Cape Cod
    August 7, 2018

    Drone flight at Sandy Neck Beach, Cape Cod

    Woods Hole Coastal and Marine Science Center Unmanned Aerial Systems (UAS) pilots Sandy Brosnahan (left) and Elizabeth Pendleton conduct a drone flight from atop a dune at Sandy Neck (Cape Cod).

    Photograph of Woods Hole Coastal and Marine Science Center drone pilots on Sandy Neck, Beach, Cape Cod, MA
    August 6, 2018

    UAS pilots in the field

    Woods Hole Coastal and Marine Science Center unmanned aerial systems (uas) pilots conduct drone flights at Sandy Neck Beach, Cape Cod, MA

    Photograph of USGS personnel in front of an active volcano
    July 31, 2018

    Night Shift

    Woods Hole Coastal and Marine Science Center's Aerial Imaging and Mapping Unmanned Aerial Systems (UAS) pilots, Emily Sturdivant (left) and Elizabeth Pendleton (right) working the night shift in Hawaii at the Kileaua volcano site.  

    Photograph of Neil Ganju presenting at SSEAT
    July 31, 2018

    USGS teaches the teachers

    Woods Hole Costal and Marine Science Center staff offered a presentation and handouts on Natural Hazards and Coastal Hazards in Wetlands and Estuaries  Smithsonian Science Education Academies for Teachers (SSEATs)

    Photograph of Meagan Gonneea at SSEAT
    July 31, 2018

    USGS scientists teach the teachers

    Woods Hole Costal and Marine Science Center staff offered a presentation and handouts on Natural Hazards and Coastal Hazards in Wetlands and Estuaries  at the Smithsonian Science Education Academies for Teachers (SSEATs)

    overhead view of girls sitting around a table wring on data sheets, samples in plastic tubs cover the table.
    July 31, 2018

    GeoGirls Examing Tephra Deposits

    The GeoGirls examined tephra (ash and pumice) deposits from Mount St. Helens’ eruptive past and learned how to create a stratigraphic column.

    People are wearing wet suits and waders and are holding hand-held computers and backpacks with equipment in them, smiling.
    July 25, 2018

    Synchronized mapping

    USGS and Washington State Department of Ecology scientists are geared up and ready to start a topographic survey at the mouth of the Elwha River, using handheld computers and backpack-mounted GPS equipment. From left to right are Owen Warrick (USGS Volunteer), Jon Warrick (USGS), Andy Ritchie (USGS), Heather Weiner (WA State Dept. of Ecology), Diana McCandless (WA State

    ...
    Animation is looking at an angle at a coastal cliff region with a newly cut road running across it, showing how it has changed.
    July 18, 2018

    Mud Creek landslide changes March 2017-June 2018

    Time-lapse view of California Highway 1 reconstruction after 2017 landslide

    USGS scientists produced an animated GIF in coordination with the California Department of Transportation (Caltrans) re-opening of State Highway 1 through Big Sur on July 18, 2018. In 2017, the massive Mud Creek landslide buried a quarter-mile of the famous coastal route

    ...
    Filter Total Items: 404
    Date published: May 31, 2018

    USGS Hurricane Response Met Challenges in 2017, Prepares for 2018

    No one has a crystal ball to foresee what will happen during the 2018 hurricane season that begins June 1, but NOAA forecasters say there’s a 75 percent chance this hurricane season will be at least as busy as a normal year, or busier.

    Date published: May 30, 2018

    Video cameras monitor coastal change on Whidbey Island, Washington

    Video cameras installed by the USGS Remote Sensing Coastal Change project overlook the coast on Whidbey Island, Washington, about 25 miles north of Seattle. 

    Date published: May 23, 2018

    Most-cited award for special issue of Marine Geology

    A USGS-led special issue of Marine Geology received a most-cited certificate from the journal in May 2018.

    Date published: May 17, 2018

    USGS scientist visits Korea Institute of Geology and Mineral Industries

    USGS research geologist Sam Johnson of the Pacific Coastal and Marine Science Center (PCMSC) made an invited visit to the Korea Institute of Geology and Mineral Industries (KIGAM) in Daejon, South Korea, on April 24–26.

    Date published: May 17, 2018

    Kilauea volcanic activity and ash eruptions intensify

    With ash eruptions occurring from Kilauea’s summit this week, there is a threat of an even larger steam-driven violent explosion. Such an eruption could happen suddenly and send volcanic ash 20,000 feet into the air, threatening communities for miles.

    Date published: May 15, 2018

    Landslides Can Cause More Landslides

    The deadliest individual landslides in the U.S. recently were in places where there had previously been a landslide. Why do landslides happen in the same place instead of on nearby slopes that appear to be just as likely, if not more likely, to slide?

    Date published: May 8, 2018

    News Media briefing for latest update at Hawaii’s Kīlauea Volcano

    Representatives of the news media are invited to join a telephone briefing for the latest updates on Kīlauea's volcanic activity and its impacts.

    Date published: May 7, 2018

    Public lecture on coral reefs as coastal protection

    On Thursday, April 26, research geologist Curt Storlazzi of the USGS Pacific Coastal and Marine Science Center gave a public lecture on “The Role of U.S. Coral Reefs in Coastal Protection—Rigorously valuing flood reduction benefits to inform coastal zone management decisions.”

    Date published: May 7, 2018

    Media coverage of threat to atoll islands from rising seas and wave-driven flooding

    A deluge of media coverage followed publication of a USGS-led study showing that sea-level rise and wave-driven flooding could make many low-lying atoll islands uninhabitable by the mid-21st century by contaminating freshwater aquifers and damaging infrastructure. The...

    Date published: May 3, 2018

    Focus on Estuaries and Coastal Wetlands

    Estuaries and wetlands provide a critical defense against storms and sea-level rise while providing economically valuable services. How well they protect coastal communities and host diverse ecosystems is largely a function of their shape (morphology), which is controlled by factors such as sediment movement and biological feedbacks.

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