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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: 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.

    Date published: July 23, 2018
    Status: Active

    San Juan (SJG)

    The Geomagnetism Program has operated an observatory at Puerto Rico since 1903. The current observatory site, consisting of 36 acres in the mountains near Cayey, has been in use since 1965.

    Date published: July 23, 2018
    Status: Active

    Sikta (SIT)

    Prior to the purchase of Alaska by the United States, the Russians operated a meteorological and magnetic observatory at Sitka from 1842 to 1867. The Geomagnetism Program established an observatory at Sitka, near the historic Russian cemetery, in 1901, when the Program was part of the Coast and Geodetic Survey and under the leadership of Drs Louis A. Bauer and John A. Fleming. The present...

    Date published: July 23, 2018
    Status: Active

    Shumagin (SHU)

    The U.S. Geological Survey (USGS) Shumagin Magnetic Observatory is located near Sand Point, Alaska on the northwest coast of Popof Island, 575 air miles southwest of Anchorage, Alaska. The observatory was established in 2003 to provide increased geomagnetic data coverage in southern Alaska and the Aleutian Islands. The observatory is located on land owned by ...

    Filter Total Items: 119
    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. 

    Date published: February 14, 2018

    Key Findings for Scenario-Based Assessment for Nor'easters

    Percentage of sandy beaches very likely (probability > 0.9) to experience erosion associated with collision, overwash, and inundation during class 1-3 nor’easter impact.

    Date published: February 14, 2018

    Key Findings for Scenario-Based Assessment for Hurricanes

    Percentage of sandy beaches very likely (probability > 0.9) to experience erosion associated with collision, overwash, and inundation during category 1-5 hurricane landfall.

    Date published: February 14, 2018

    Multichannel sparker seismic-reflection data of field activity 2016-656-FA; between Icy Point and Dixon Entrance, Gulf of Alaska from 2016-08-07 to 2016-08-26

    This data release contains high-resolution multichannel seismic (MCS) reflection data collected in August of 2016 along the southeast Alaska continental margin. Structure perpendicular MCS profiles were collected along the Queen Charlotte-Fairweather fault. The data were collected aboard the R/V Norseman using a Delta sparker sound source and recorded on a 64-channel digital streamer...

    Date published: February 12, 2018

    Shoreline change rates in salt marsh units in Edwin B. Forsythe National Wildlife Refuge, New Jersey

    This dataset displays shoreline change rates at the Edwin B. Forsythe National Wildlife Refuge (EBFNWR), which spans over Great Bay, Little Egg Harbor, and Barnegat Bay in New Jersey, USA

    Filter Total Items: 4,349
    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.

    Year Published: 2018

    The limits of earthquake early warning: Timeliness of ground motion estimates

    The basic physics of earthquakes is such that strong ground motion cannot be expected from an earthquake unless the earthquake itself is very close or has grown to be very large. We use simple seismological relationships to calculate the minimum time that must elapse before such ground motion can be expected at a distance from the earthquake,...

    Minson, Sarah E.; Meier, Men-Andrin; Baltay, Annemarie S.; Hanks, Thomas C.; Cochran, Elizabeth S.
    The limits of earthquake early warning: Timeliness of ground motion estimates By Sarah E. Minson, Men-Andrin Meier, Annemarie S. Baltay, Thomas C. Hanks, Elizabeth S. Cochran Science Advances 21 Mar 2018: Vol. 4, no. 3, eaaq0504 DOI: 10.1126/sciadv.aaq0504

    Year Published: 2018

    Integrating real-time subsurface hydrologic monitoring with empirical rainfall thresholds to improve landslide early warning

    Early warning for rainfall-induced shallow landsliding can help reduce fatalities and economic losses. Although these commonly occurring landslides are typically triggered by subsurface hydrological processes, most early warning criteria rely exclusively on empirical rainfall thresholds and other indirect proxies for subsurface wetness. We explore...

    Mirus, Benjamin B.; Becker, Rachel E.; Baum, Rex L.; Smith, Joel B.
    Mirus, BB R Becker, RL Baum, JB Smith. 2018. Integrating real-time subsurface hydrologic monitoring with empirical rainfall thresholds to improve landslide early warning, Landslides, doi:10.1007/s10346-018-0995-z.

    Year Published: 2018

    Seismicity in the Challis, Idaho region, January 2014 - May 2017: Late aftershocks of the 1983 Ms 7.3 Borah Peak earthquake

    In April 2014, after about 20 yrs of relatively low seismicity, an energetic earthquake sequence (maximum ML">ML 4.8) began 25–30 km northwest of the 1983 Ms">Ms 7.3 Borah Peak earthquake rupture area near the town of Challis, Idaho. This sequence ended in the fall of 2014, but in January 2015, a second energetic...

    Pang, Guanning; Koper, Keith D.; Stickney, Michael C.; Pechmann, James C.; Burlacu, Relu; Pankow, Kristine L.; Payne, Suzette; Benz, Harley M.

    Year Published: 2018

    Application of microtremor horizontal-to-vertical spectral ratio (MHVSR) analysis for site characterization: State of the art

    Nakamura (Q Rep Railway Tech Res Inst 30:25–33, 1989) popularized the application of the horizontal-to-vertical spectral ratio (HVSR) analysis of microtremor (seismic noise or ambient vibration) recordings to estimate the predominant frequency and amplification factor of earthquake shaking. During the following quarter century, popularity in the...

    Molnar, S.; Cassidy, J. F. ; Castellaro, S.; Cornou, C.; Crow, H.; Hunter, J. A.; Matsushima, S.; Sanchez-Sesma, F. J.; Yong, Alan
    S. Molnar, J. F. Cassidy, S. Castellaro, C. Cornou, H. Crow, J. A. Hunter, S. Matsushima, & F. J. Sánchez-Sesma, and A. Yong (2018). Application of microtremor horizontal-to-vertical spectral ratio (MHVSR) analysis for site characterization: state of the art, Surveys in Geophysics, p 1-19, https://doi.org/10.1007/s10712-018-9464-4.

    Year Published: 2018

    Strong variation in weathering of layered rock maintains hillslope‐scale strength under high precipitation

    The evolution of volcanic landscapes and their landslide potential are both dependent upon the weathering of layered volcanic rock sequences. We characterize critical zone structure using shallow seismic Vp and Vs profiles and vertical exposures of rock across a basaltic climosequence on Kohala peninsula, Hawai’i, and exploit...

    Von Voigtlander, Jennifer; Clark, Marin K.; Zekkos, Dimitrios; Greenwood, William W.; Anderson, Suzanne P.; Anderson, Robert S.; Godt, Jonathan W.
    Attribution: Natural Hazards
    Von Voigtlander, J., Clark, M.K., Zekkos, D., Greenwood, W.W., Anderson, S.P., Anderson, R.S., and Godt, J.W., 2018, Strong variation in weathering of layered rock maintains hillslope-scale strength under high precipitation: Earth Surface Processes and Landforms, v. 43, p. 1183-1194.

    Year Published: 2018

    Interaction between hydraulic fracture and a preexisting fracture under triaxial stress conditions

    Enhanced reservoir connectivity generally requires maximizing the intersection between hydraulic fracture (HF) and preexisting underground natural fractures (NF), while having the hydraulic fracture cross the natural fractures (and not arrest). We have studied the interaction between a hydraulic fracture and a polished saw-cut fault. The...

    Mighani, Saied; Lockner, David A.; Kilgore, Brian D.; Sheibani, Farrokh; Evans, Brian
    Mighani, S., Lockner, D.A., Kilgore, B.D., Sheibani, F., and Evans, B., 2018, Interaction between hydraulic fracture and a preexisting fracture under triaxial stress conditions: Society of Petroleum Engineers International Hydraulic Fracturing Technology Conference and Exhibition, 23-25 January, The Woodlands, Texas, USA, https://doi.org/10.2118/189901-MS.

    Year Published: 2018

    A suite of exercises for verifying dynamic earthquake rupture codes

    We describe a set of benchmark exercises that are designed to test if computer codes that simulate dynamic earthquake rupture are working as intended. These types of computer codes are often used to understand how earthquakes operate, and they produce simulation results that include earthquake size, amounts of fault slip, and the patterns of...

    Harris, Ruth A.; Barall, Michael; Aagaard, Brad T.; Ma, Shuo; Roten, Daniel; Olsen, Kim B.; Duan, Benchun; Liu, Dunyu; Luo, Bin; Bai, Kangchen; Ampuero, Jean-Paul; Kaneko, Yoshihiro; Gabriel, Alice-Agnes; Duru, Kenneth; Ulrich, Thomas; Wollherr, Stephanie; Shi, Zheqiang; Dunham, Eric; Bydlon, Sam; Zhang, Zhenguo; Chen, Xiaofei; Somala, Surendra N.; Pelties, Christian; Tago, Josue; Cruz-Atienza, Victor Manuel; Kozdon, Jeremy; Daub, Eric; Aslam, Khurram; Kase, Yuko; Withers, Kyle; Dalguer, Luis
    Harris, R.A., M. Barall, B. Aagaard, S. Ma, D. Roten, K. Olsen, B. Duan, B. Luo, D. Liu, K. Bai, J.-P. Ampuero, Y. Kaneko, A.-A. Gabriel, K. Duru, T. Ulrich, S. Wollherr, Z. Shi, E. Dunham, S. Bydlon, Z. Zhang, X. Chen, S.N. Somala, C. Pelties, J. Tago, V.M. Cruz-Atienza, J. Kozdon, E. Daub, K. Aslam, Y. Kase, K. Withers, and L. Dalguer (2018), A suite of exercises for verifying dynamic earthquake rupture codes, Seism. Res. Lett., 89(3), 1146-1162, https://doi.org/10.1785/0220170222.

    Year Published: 2018

    The intensity signature of induced seismicity

    We analyze a comprehensive database of ∼63,000">∼63,000 geocoded community intensity observations from >400">>400 earthquakes of moment magnitude M≥3.5">M≥3.5 in Oklahoma from 2010 to 2016 to define the intensity signature of induced events. We show that natural and induced...

    Atkinson, Gail M.; Wald, David J.; Worden, Charles; Quitoriano, Vince
    Gail M. Atkinson, David Wald, C. Bruce Worden, Vince Quitoriano; The Intensity Signature of Induced Seismicity. Bulletin of the Seismological Society of America ; 108 (3A): 1080–1086. doi: https://doi.org/10.1785/0120170316

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    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.  

    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.

    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)

    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

    ...
    Aerial of lava channel
    July 10, 2018

    Kīlauea Volcano — Landscape Differences

    During HVO's morning overflight today, the dramatic difference in landscapes on the northern and southern sides of the fissure 8 lava channel was readily apparent. With dominant trade winds blowing heat and volcanic gases to the southwest, the north side of the lava channel remains verdant, while, in stark contrast, vegetation on the south side has been severely impacted

    ...
    Night time view of Halekamahina
    July 10, 2018

    Kīlauea Volcano — Looking Uprift Past Halekamahina

    View from Bryson's quarry around 11:45 p.m. HST last night looking uprift past Halekamahina (an older ash cone) to 

    ...
    View of fissure 8
    July 10, 2018

    Kīlauea Volcano — Fissure 8 and Lava Channel

    Fissure 8 and a full lava channel as seen during HVO's early morning overflight. The visible road is Nohea Street in the Leilani Estates subdivision. Steam generated from heated rain water rose from the 

    ...
    Aerial view of Kapoho Crater
    July 10, 2018

    Kīlauea Volcano — Aerial View of Kapoho Crater

    Aerial view of Kapoho Crater looking toward the south-southeast. Part of the lava channelbecame blocked just upstream of Kapoho Crater yesterday, diverting flows to the west and then south around the crater (center right). Lava exiting a crusted section of the channel continued flowing in the channel pathway (lower center to left).

    July 10, 2018

    Kīlauea Volcano — Lava Oozing

    Lava oozes from a small breakout near Bryson's 

    ...
    Lava running past a residential area
    July 9, 2018

    Kīlauea Volcano — Fissure 8 and Leilani Estates

    Fissure 8 and Leilani Estates viewed from the south. Houses in the foreground are located in the southern portion of Leilani Estates. Fissure 8 and surrounding 

    ...
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    Date published: May 1, 2018

    Cascades Volcano Observatory Open House: Come Meet Volcano Scientists

    MEDIA ADVISORY

    Have you ever wondered what scientists do at a volcano observatory when a volcano is not erupting? There is plenty to accomplish—probably more than you can imagine.

    Date published: April 30, 2018

    Washington State Volcano Preparedness Month

    May is Volcano Preparedness Month in Washington, providing residents an opportunity to become more familiar with volcanic risk in their communities and learn about steps they can take to reduce potential impacts.

    Date published: April 25, 2018

    Many Low-Lying Atoll Islands Will Be Uninhabitable by Mid-21st Century

    Sea-level rise and wave-driven flooding will negatively impact freshwater resources on many low-lying atoll islands in such a way that many could be uninhabitable in just a few decades.

    Date published: April 25, 2018

    Saltwater contamination of freshwater resources could make many atoll islands uninhabitable in decades

    Sea-level rise and wave-driven flooding could introduce saltwater so frequently into atoll islands’ freshwater resources that many will be uninhabitable by the mid-21st century, according to a new study published in ...

    Date published: April 24, 2018

    East vs West Coast Earthquakes

    Why was an earthquake in Virginia felt at more than twice the distance than a similar-sized earthquake in California? The answer is one that many people may not realize. Earthquakes east of the Rocky Mountains can cause noticeable ground shaking at much farther distances than comparably-sized earthquakes in the West.

    Date published: April 18, 2018

    USGS Rolls Out Groundbreaking Earthquake Study: The HayWired Earthquake Scenario

    USGS collaborates with key academic, state, local, and industry partners to provide a new look at what could happen during a major earthquake in the San Francisco Bay Area.

    Date published: April 16, 2018

    USGS 2017 Excellence in Leadership Award honors scientists who assess coastal flooding threats

    Research geologist Patrick Barnard and research oceanographer Li Erikson have been recognized for leading efforts to better assess coastal vulnerability to flooding.

    Date published: April 13, 2018

    Documentary about sea-level rise threatening the Republic of the Marshall Islands features USGS findings

    USGS research in the Republic of the Marshall Islands forms part of the scientific foundation of an interactive documentary released April 6 by PBS Frontline.

    Date published: April 12, 2018

    USGS beach and nearshore surveys in the media

    USGS oceanographer Dan Hoover explained how USGS coastal surveys are conducted and why they are important in a radio interview with NPR affiliate KCLU. KCLU was one of several outlets that reported on ...

    Date published: April 4, 2018

    USGS Seeks Earthquake Hazards Research Proposals

    Applications due May 22, 2018

    Date published: March 29, 2018

    International Mapping Standards Updated for Planets throughout Solar System

    Clarifying Latitude and Longitude for Planets besides Earth

    Date published: March 28, 2018

    Tracking the movement of sediment and contaminants from northern California wildfire areas to San Francisco Bay

    USGS research geologist Renee Takesue of the Pacific Coastal and Marine Science Center collected 20 sediment samples from Sonoma Creek and Napa River north of San Francisco Bay on March 17.

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