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Natural Hazards

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Costs and consequences of natural hazards can be enormous; each year more people and infrastructure are at risk. We develop and apply hazards science to help protect U.S. safety, security, and economic well being. These scientific observations, analyses, and research are crucial for the Nation to become more resilient to natural hazards.

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Filter Total Items: 274
Date published: August 31, 2018
Status: Active

Coastal Model Applications and Field Measurements- Field Measurements and Model Applications

Several components of this project are applications to evaluate the model against critical field measurements or to test new model components. Data from field measurements is described in our publications and available in our databases.

Date published: August 31, 2018
Status: Active

Coastal Model Applications and Field Measurements- Advances in Instrumentation

Ongoing acquisition of new instruments and development of analytical methods provides us with the means to make better observations of coastal ocean processes. The measurements provide us with insight and data for critical evaluation of model performance. Advances in a range of measurement capabilities, including bottom stress, sediment erodibility, water properties and nutrient concentrations...

Date published: August 31, 2018
Status: Active

Coastal Model Applications and Field Measurements- Ocean Model Contributions

The U.S. Geological Survey (USGS) and Woods Hole Oceanographic Institution (WHOI) led a project funded by the National Oceanographic Partnership Program (NOPP) with support from the Office of Naval Research (ONR) and the National Science Foundation (NSF), to develop a community sediment-transport modeling system (CSTMS).

Date published: August 29, 2018
Status: Active

Beach-dependent Shorebirds

Policy-makers, individuals from government agencies, and natural resource managers are under increasing pressure to manage changing coastal areas to meet social, economic, and natural resource demands, particularly under a regime of sea-level rise. Scientific knowledge of coastal processes and habitat-use can support decision-makers as they balance these often-conflicting human and ecological...

Date published: August 28, 2018
Status: Active

Coastal Model Applications and Field Measurements

Numerical models are used by scientists, engineers, coastal managers, and the public to understand and predict processes in the coastal ocean. This project supports the development and application of open-source coastal models and has several objectives: 1) improve the code of numerical sediment-transport models by implementing new or improved algorithms; 2) obtain measurements of coastal...

Date published: August 27, 2018
Status: Completed

IMMeRSS-- Geophysical Imaging for Methane Seep Studies

Geophysical imaging relies on specialized tools to detect anomalies in the water column or to map features on or beneath the seafloor.  Equipment may be towed, mounted on the side of a ship, or attached to the ship’s hull.  Many geophysical techniques rely on transmitting an acoustic signal of a particular frequency and analyzing the information in the returning signal to infer the properties...

Date published: August 27, 2018
Status: Completed

IMMeRSS-- Dating Past Methane Seepage

Cold seeps are locations where chemicals, including methane, hydrocarbons, sulfide and sometimes carbon dioxide, leak from sediments below the seafloor into the water above.  Much of the current knowledge on cold seeps comes from direct observations, such as the mapping of acoustic flares and the detection of...

Date published: August 27, 2018
Status: Completed

IMMeRSS- Seafloor Methane Seep Environments

Cold seeps, which are locations where chemicals -- including methane and other hydrocarbons, brine, hydrogen sulfide, and sometimes carbon dioxide--leak from the seafloor, occur worldwide on both passive and tectonically-active continental margins.  Cold seeps are distinguished from ...

Date published: August 27, 2018
Status: Completed

IMMeRSS-- Interagency Mission for Methane Research on Seafloor Seeps


From May 3 to May 11, 2017, the U.S. Geological Survey, in collaboration with the British Geological Survey and with support from these two agencies, the National Oceanic and Atmospheric Administration (NOAA) Office of Ocean Exploration and Research, and the U.S. Department of Energy, will lead an...

Contacts: Carolyn Ruppel, Ph.D, Amanda Demopoulos, Ph.D., Nancy Prouty, Diana Sahay, Daniel Concon
Date published: August 23, 2018
Status: Active

Gas Hydrates- Laboratory and Field Support

The Instrumented Pressure Testing Chamber (IPTC)

A device for measuring the physical properties of naturally-occurring, hydrate-bearing sediment at nearly in situ pressure conditions.

Date published: August 23, 2018
Status: Active

Gas Hydrates- Submarine Slope Destabilization

USGS scientists have a long tradition of studying submarine slope failures and were among the first to note a spatial link between slope failures and gas hydrates/gas-charged sediments. USGS Gas Hydrates scientists support the USGS Hazards Mission area through field-based surveys that refine understanding of this association and through geotechnical studies that evaluate the response of...

Date published: August 23, 2018
Status: Active

Gas Hydrates- Atlantic Margin Methane Seeps

Analysis of 94,000 square kilometers of multibeam water column backscatter data collected by the NOAA Okeanos Explorer mostly seaward of the shelf-break on the northern US Atlantic margin reveals more than 570 gas plumes that correspond to seafloor methane seeps. This discovery is documented in an August 2014 ...

Filter Total Items: 119
Date published: April 6, 2018

Collection, analysis, and age-dating of sediment cores from salt marshes on the south shore of Cape Cod, Massachusetts, from 2013 through 2014

Elevation of the marsh surface was measured with RTK-GPS to evaluate where the marsh falls within the current tidal frame. The historic marsh surface elevation was then reconstructed using the calculated age of each depth interval and its elevation, assuming that elevations within this shallow zone (less than 30 cm) have been preserved for the past century.


Date published: April 4, 2018

U.S. Geological Survey Oceanographic Time-Series Data Collection

Oceanographic time-series measurements made by the U.S. Geological Survey between 1975 and the present as part of research programs. The data were collected to address specific research questions and were primarily collected over durations less than a year, using stationary platforms, with sensors near the sea floor. These data have been used to study of ocean dynamics and to validate ocean...

Date published: April 4, 2018

Coastal and Marine Geology Program Internet Map Server and GIS Data

The USGS Coastal and Marine Geology Program (CMGP) Internet Map Server is an interactive mapping service which allows the user to explore and download GIS data sets published by CMGP.

Date published: April 4, 2018

Sampling data collected in Cape Cod Bay, Buzzards Bay, and Vineyard Sound; south of Martha's Vineyard; and south and east of Nantucket, Massachusetts, in 2011, U.S. Geological Survey Field Activity 2011-015-FA

These survey data are used to explore the nature of the sea floor and, in conjunction with high-resolution geophysical data, to make interpretive maps of sedimentary environments and validate acoustic remote sensing data.

Date published: April 4, 2018

Continuous Bathymetry and Elevation Models of the Massachusetts Coastal Zone and Continental Shelf

Integrated terrain models covering 16,357 square kilometers of the Massachusetts coastal zone and offshore waters were built to provide a continuous elevation and bathymetry terrain model for ocean planning purposes.  A Triangulated Irregular Network was created from public-domain bathymetric and LiDAR data using the ArcGIS terrain-model framework.

Date published: April 4, 2018

Conceptual salt marsh units for wetland synthesis: Edwin B. Forsythe National Wildlife Refuge, New Jersey

The salt marsh complex of the Edwin B. Forsythe National Wildlife Refuge (EBFNWR), which spans over Great Bay, Little Egg Harbor, and Barnegat Bay (New Jersey, USA), 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: March 29, 2018

Geophysical data collected along the Atlantic continental slope and rise 2014, U.S. Geological Survey Field Activity 2014-011-FA, cruise MGL1407

In summer 2014, the U.S. Geological Survey conducted a 21-day geophysical program in deep water along the Atlantic continental margin by using R/V Marcus G. Langseth (Field Activity Number 2014-011-FA). The purpose of the seismic program was to collect multichannel seismic reflection and refraction data to determine sediment thickness

Date published: March 29, 2018

Swath bathymetry collected offshore of Fire Island and western Long Island, New York in 2014, U.S. Geological Survey Field Activity 2014-072-FA

Hurricane Sandy, the largest storm of historical record in the Atlantic basin, severely impacted southern Long Island, New York in October 2012. In 2014, the U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers (USACE), conducted a high-resolution multibeam echosounder survey with Alpine Ocean Seismic Survey, Inc., offshore of Fire Island and western Long Island...

Date published: March 28, 2018

Mean tidal range in salt marsh units of Edwin B. Forsythe National Wildlife Refuge, New Jersey

This dataset displays the spatial variation mean tidal range (i.e. Mean Range of Tides, MN) in the Edwin B. Forsythe National Wildlife Refuge, which spans over Great Bay, Little Egg Harbor, and Barnegat Bay in New Jersey, USA. MN was based on the calculated difference in height between mean high water (MHW) and mean low water (MLW) using the VDatum (v3.5) software (...

Date published: March 27, 2018

Exposure potential of salt marsh units in Edwin B. Forsythe National Wildlife Refuge to environmental health stressors

This dataset displays the exposure potential to environmental health stressors in the Edwin B. Forsythe National Wildlife Refuge (EBFNWR), which spans over Great Bay, Little Egg Harbor, and Barnegat Bay in New Jersey, USA. Exposure potential is calculated with the Sediment-bound Contaminant Resiliency and Response (SCoRR) ranking system (Reilly and others, 2015)

Date published: March 27, 2018

Continuous terrain model for water circulation studies, Barnegat Bay, New Jersey

Water quality in the Barnegat Bay estuary along the New Jersey coast is the focus of a multidisciplinary research project begun in 2011 by the U.S. Geological Survey (USGS) in cooperation with the New Jersey Department of Environmental Protection. A continuous elevation surface (terrain model) integrating all available elevation data in the area was produced for water circulation modeling...

Date published: March 27, 2018

Point cloud from low-altitude aerial imagery from unmanned aerial system (UAS) flights over Coast Guard Beach, Nauset Spit, Nauset Inlet, and Nauset Marsh, Cape Cod National Seashore, Eastham, Massachusetts on 1 March 2016 (LAZ file)

This point cloud was derived from low-altitude aerial images collected from an unmanned aerial system (UAS) flown in the Cape Cod National Seashore on 1 March, 2016. The objective of the project was to evaluate the quality and cost of mapping from UAS images. The point cloud contains 434,096,824 unclassifed and unedited geolocated points.

Filter Total Items: 4,349
Year Published: 2018

Granite IP network default route disappearance—Diagnosis and solution

The U.S. Geological Survey (USGS) National Strong Motion Project (NSMP) operates numerous strong-motion seismographs to monitor ground shaking and structural response caused by large, nearby earthquakes. This report describes a problem NSMP scientists encountered communicating over the Internet with several Kinemetrics, Inc., Granite strong-motion...

Baker, Lawrence M.
Baker, L.M., 2018, Granite IP network default route disappearance—Diagnosis and solution: U.S. Geological Survey Open-File Report 2018–1117, 35 p., https://doi.org/10.3133/ofr20181117.

Year Published: 2018

Seismic sensors record a hurricane’s roar

The instruments installed at Global Seismographic Network (GSN) stations were designed to record Earth’s vibrations, but they sometimes pick up sound waves from unexpected sources. For example, newly installed infrasound sensors at a station on Puerto Rico recorded the passage of Hurricane Maria on 20 September 2017.

Wilson, David; Davis, Peter; Ebeling, Carl; Hutt, Charles R.; Hafner, Katrin
Wilson, D. C., P. Davis, C. Ebeling, C. R. Hutt, and K. Hafner (2018), Seismic sensors record a hurricane’s roar, Eos, 99, https://doi.org/10.1029/2018EO102963. Published on 03 August 2018.

Year Published: 2018

Complex bedding geometry in the upper portion of Aeolis Mons, Gale crater, Mars

The Upper formation of Aeolis Mons in Gale crater exhibits curvilinear bedding patterns on the surfaces of several erosional benches that have been interpreted as cross-bedding. We use High Resolution Imaging Science Experiment (HiRISE) stereo topography to test this hypothesis by measuring the bedding geometry within these benches. The bedding...

Anderson, Ryan; Edgar, Lauren; Rubin, David M.; Lewis, Kevin W.; Newman, Claire
Anderson, R.B., Edgar, L.A., Rubin, D.M., Lewis, K.W., Newman, C., 2018. Complex bedding geometry in the upper portion of Aeolis Mons, Gale crater, Mars. Icarus 314, 246–264. doi:10.1016/j.icarus.2018.06.009

Year Published: 2018

Tilt Trivia: A free multiplayer app to learn geoscience concepts and definitions

Today’s technology is opening up new ways to learn. Here, we introduce Tilt Trivia, a suite of quiz‐style, multiplayer games for use on mobile devices and tablets (Android or Apple) to help students learn simple definitions and facts. This mobile device game was built using the Unity engine and has a multiplayer functionality that runs seamlessly...

Kilb, Debi; Yang, Alan; Garrett, Nathan; Pankow, Kristine L.; Rubinstein, Justin L.; Linville, Lisa

Year Published: 2018

KG²B, a collaborative benchmarking exercise for estimating the permeability of the Grimsel granodiorite - Part 2: modeling, microstructures and complementary data

Measuring and modelling the permeability of tight rocks remains a challenging task. In addition to the traditional sources of errors that affect more permeable formations (e.g. sample selection, non-representative specimens, disturbance introduced during sample acquisition and preparation), tight rocks can be particularly prone to solid–fluid...

David, Christian; Wassermann, J.; Amann, F.; Klaver, J.; Davy, C.; Sarout, J.; Esteban, L.; Rutter, E.H.; Hu, Q.; Louis, L.; Delage, P.; Lockner, David A.; Selvadurai, A.P.S.; Vanorio, T; Amann Hildenbrand, A.; Meredith, P.G.; Browning, J.; Mitchell, T.M.; Madonna, C.; Billiotte, J.; Reuschle, T.; Lasseux, D.; Fortin, J.; Lenormand, R.; Loggia, D.; Nono, F.; Boitnott, G.; Jahns, E.; Fleury. M.; Berthe, G.; Braun, P.; Grégoire, D.; Perrier, L.; Polito, P.; Jannot, Y.; Sommier, A.; Krooss, B.; Fink, R.; Clark, A.
C. David, J. Wassermann, F. Amann, J. Klaver, C. Davy, J. Sarout, L. Esteban, E.H. Rutter, Q. Hu, L. Louis, P. Delage, D.A. Lockner, A.P.S. Selvadurai, T. Vanorio, A. Amann Hildenbrand, P.G. Meredith, J. Browning, T.M. Mitchell, C. Madonna, J. Billiotte, T. Reuschl´e, D. Lasseux, J. Fortin, R. Lenormand, D. Loggia, F. Nono, G. Boitnott, E. Jahns, M. Fleury, G. Berthe, P. Brau, D. Gr´egoir, L. Perrie, P. Polit, Y. Janno, A. Sommie, B. Krooss, R. Fi, and A. Clark. (2018), KG²B: a collaborative benchmarking exercise for estimating the permeability of the Grimsel granodiorite - Part 2: modeling, microstructures and complementary data, Geophys J Int, 215, 825-843, https://doi.org/10.1093/gji/ggy305.

Year Published: 2018

Geoelectric hazard maps for the Pacific Northwest

Maps of extreme value, horizontal component geoelectric field amplitude are constructed for the Pacific Northwest United States (and parts of neighboring Canada). Multidecade long geoelectric field time series are calculated by convolving Earth surface impedance tensors from 71 discrete magnetotelluric survey sites across the region with...

Love, Jeffrey J.; Lucas, Greg M.; Kelbert, Anna; Bedrosian, Paul A.

Year Published: 2018

Turing-style tests for UCERF3 synthetic catalogs

Epidemic-Type Aftershock Sequence (ETAS) catalogs generated from the 3rd Uniform California Earthquake Rupture Forecast (UCERF3) model are unique in that they are the first to combine a complex, fault-based long-term forecast with short-term earthquake clustering statistics. We present Turing-style tests to examine whether these synthetic catalogs...

Page, Morgan T.; Van Der Elst, Nicholas

Year Published: 2018

Stronger peak ground motion, beyond the threshold to initiate a response, does not lead to larger stream discharge responses to earthquakes

The impressive number of stream gauges in Chile, combined with a suite of past and recent large earthquakes, makes Chile a unique natural laboratory to study several streams that recorded responses to multiple seismic events. We document changes in discharge in eight streams in Chile following two or more large earthquakes. In all cases, discharge...

Mohr, Christian H.; Manga, Michael; Wald, David J.
Mohr, C. H., Manga, M., & Wald, D. J. (2018). Stronger peak ground motion, beyond the threshold to initiate a response, does not lead to larger stream discharge responses to earthquakes. Geophysical Research Letters, 45. https://doi.org/10.1029/2018GL078621

Year Published: 2018

A novel technique for precision geometric correction of jitter distortion for the Europa Imaging System and other rolling shutter cameras

We use simulated images to demonstrate a novel technique for mitigating geometric distortions caused by platform motion (“jitter”) as two-dimensional image sensors are exposed and read out line by line (“rolling shutter”). The results indicate that the Europa Imaging System (EIS) on NASA’s Europa Clipper can likely meet its scientific goals...

Kirk, Randolph L.; Shepherd, Makayla; Sides, Stuart
International Archives of Photogrammetry, Remote Sensing, and Spatial Information Sciences, XLII-3, 735–739.

Year Published: 2018

Candidate products for operational earthquake forecasting illustrated using the HayWired planning scenario, including one very quick (and not‐so‐dirty) hazard‐map option

In an effort to help address debates on the usefulness of operational earthquake forecasting (OEF), we illustrate a number of OEF products that could be automatically generated in near‐real time. To exemplify, we use an M">M 7.1 mainshock on the Hayward fault, which is very similar to the U.S. Geological Survey (USGS) HayWired earthquake...

Field, Edward H.; Milner, Kevin R.
Field, E. H. and K. R. Milner (2018). Candidate Products for Operational Earthquake Forecasting Illustrated Using the HayWired Planning Scenario, Including One Very Quick (and Not‐So‐Dirty) Hazard‐Map Option, Seismological Research Letters, 89, 1420-1434, doi:10.1785/0220170241

Year Published: 2018

An updated method for estimating landslide‐event magnitude

Summary statistics derived from the frequency–area distribution (FAD) of inventories of triggered landslides allows for direct comparison of landslides triggered by one event (e.g. earthquake, rainstorm) with another. Such comparisons are vital to understand links between the landslide‐event and the environmental characteristics of the area...

Tanyas, Hakan; Allstadt, Kate E.; van Weston, Cees J.
Tanyas, H., Allstadt, K.E., van Westen, C.J., 2018, An updated method for estimating landslide-event magnitude, Earth Surface Processes and Landforms, https://doi.org/10.1002/esp.4359

Year Published: 2018

Frictional properties and 3-D stress analysis of the southern Alpine Fault, New Zealand

New Zealand's Alpine Fault (AF) ruptures quasi-periodically in large-magnitude earthquakes. Paleoseismological evidence suggests that about half of all recognized AF earthquakes terminated at the boundary between the Central and South Westland sections of the fault. There, fault geometry and the polarity of uplift change. The South Westland...

Boulton, Carolyn; Barth, Nicolas C.; Moore, Diane E.; Lockner, David A.; Townend, John; Faulkner, Daniel R.

Filter Total Items: 2,552
Photograph of Atlantic spotted dolphins
August 27, 2018

Atlantic Spotted Dolphins

Atlantic spotted dolphins photographed near the R/V Hugh R. Sharp on August 27, 2018 by the protected species visual observers.

Cover of a report features a photo of Yosemite with the sun just behind El Capitan, with text and graphics laid on top.
August 27, 2018

Cover of California's Fourth Climate Change Assessment Report

Cover of the 2018 publication, "California’s Fourth Climate Change Assessment: Statewide Summary Report."

Before and after views of a water fall.  First shows light flow of water over the falls, the second shows heavy flow.
August 23, 2018

Impact of Hurricane Lane on Wailuku River

Two views from the Rainbow Falls overlook, downstream of the Wailuku River streamgage near Hilo, Hawaii. The image on the left shows a typical base flow of about 35 cubic feet per second (cfs). The image on the right shows the early impact of Hurricane Lane with a flow of about 26,000 cfs taken at 8:35 a.m. HST, August 23, 2018. This U.S. Geological Survey streamgage has

Photograph of USGS personnel retrieving airguns
August 17, 2018

Retrieving airguns

 Jenny White McKee and Pete Dal Ferro of the Pacific Coastal and Marine Science Center retrieve two airguns during the 2018 MATRIX cruise aboard the R/V Hugh R. Sharp.  The seismic streamer is visible on the winch in the foreground.

Photograph of 4 diesel compressors
August 17, 2018

Diesel Compressors

Four diesel-powered compressors chained to the deck of the R/V Hugh R. Sharp provided the air to power the seismic sources during the MATRIX cruise. 

city skyline with tall buildings lit up at night and bridge in left foreground
August 15, 2018

The Bay Bridge and the Oakland city skyline

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

August 14, 2018

Image of the Week - Mendocino Fire

Landsat 8 captured satellite views of California’s largest wildfire on record in the summer of 2018. The Mendocino Complex Fire in northern California is a combination of two fires: the Ranch Fire and the River Fire. 

Both fires started July 27, and hot, dry, windy conditions caused them to spread rapidly. Landsat 8 imaged the area the day before the fires broke out

Photograph of Woods Hole Coastal and Marine Science Center staff at 2018 Woods Hole Science Stroll
August 11, 2018

Woods Hole Science Stroll 2018

Woods Hole Coastal and Marine Science Center staff, Tarandeep Kalra (pointing in light blue shirt) and Zafer Defne (orange USGS shirt) discuss oceanographic models with Science Stroll attendees

Photograph of a drone flying over the water at the 2018 Woods Hole Science Stroll
August 11, 2018

Drone Demos at 2018 Woods Hole, MA Science Stroll

USGS drone demonstration at the 2018 Woods Hole, MA Science Stroll

Photograph of a USGS drone flying over the water at the 2018 Woods Hole, MA Science Stroll
August 11, 2018

Drone Demos at 2018 Woods Hole, MA Science Stroll

USGS drone demonstration at the 2018 Woods Hole, MA Science Stroll

Filter Total Items: 381
Date published: July 26, 2018

MEDIA ADVISORY: Join GeoGirls at Mount St. Helens August 1

Twenty-five middle-school girls from Washington and Oregon are participating in the fourth annual “GeoGirls” outdoor volcano science program at Mount St. Helens, jointly organized by the U.S. Geological Survey and the Mount St. Helens Institute.

Date published: July 25, 2018

Researchers Develop Model for Predicting Landslides Caused by Earthquakes

A model developed by researchers at Indiana University and the USGS can help experts address such risks by estimating the likelihood of landslides that will be caused by earthquakes anywhere in the world within minutes. Read story.

Date published: July 18, 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.

Date published: July 9, 2018

Southern California coastal cliffs could retreat 135 feet in 80 years as erosion rates potentially double

USGS scientists combined a series of computer models to forecast cliff erosion along the Southern California coast.

Date published: July 9, 2018

Sea Level Rise Could Double Erosion Rates of Southern California Coastal Cliffs

Coastal cliffs from Santa Barbara to San Diego might crumble at more than twice the historical rate by the year 2100 as sea levels rise.

Date published: July 3, 2018

Rattlesnake Hills Landslide Information

What is known and what is being done, from the Washington Department of Natural Resources.

Date published: June 21, 2018

Kīlauea Volcano Erupts

Today's update for June 21st, 2018 will be the last of the daily updates on this USGS feature story.  We encourage you to keep checking the USGS Hawaiian Volcano Observatory (HVO) Kīlauea status website for daily activity updates. You can also visit the USGS Facebook page and the USGS Twitter feed as updates become available. For press inquiries, please email volcanomedia@usgs.gov.

Date published: June 14, 2018

John Warner selected as one of AGU's Outstanding Reviewers of 2017

John Warner, Woods Hole Coastal and Marine Science Center, was cited by Robert Hetland, editor of Journal of Geophysical Research: Oceans.

Date published: June 8, 2018

Amy East elected GSA Fellow for insights into landscape response to changes in sediment supply

The Geological Society of America (GSA) elected USGS research geologist Amy East to be a GSA Fellow, “an honor bestowed on the best of our profession,” at the spring GSA Council meeting.

Date published: June 5, 2018

Julie Bernier to serve as panelist at the 2018 State of the Coast Conference

Julie Bernier (SPCMSC geologist) was invited to serve as a panelist for the session "Extraction Related Subsidence and the Potential for Uplift" at the 2018 State of the Coast Conference.

Date published: June 4, 2018

The Past Holds the Key to the Future of Aftershock Forecasting

No one can predict earthquakes, but after a large earthquake, it’s a pretty safe bet that there will be aftershocks. 

Date published: June 1, 2018

Oklahoma Study Reveals Possible, Previously Unknown Sources of Earthquakes

Magnetic measurements made during low-altitude airplane flights conducted for the U.S. Geological Survey and the Oklahoma Geological Survey reveal possible deep faults that may contribute to increased seismic activity in response to wastewater injection in certain portions of Oklahoma.

Filter Total Items: 177