Map of the surface geology of Hawaii

The United States Geological Survey's (USGS) geologic map of the state of Hawai'i provides a series of printable color maps of the surface geology for each island in the state of Hawai'i. Users can also download metadata for the maps, GIS database files, and spreadsheets of geochemical and radiometric age data for different lava flows. 

Click here to access the USGS geologic map of Hawai'i.

Source: U.S. Geological Survey

EARTH Magazine: Narratives from Nepal: Relief and Rebuilding after the Gorkha Earthquake

Next week at the American Geophysical Union Fall Meeting, geoscientists will be meeting to discuss findings from the April 2015 Gorkha Earthquake, which devastated Nepal and killed approximately 8,900 people. EARTH Magazine brings you a special feature that describes how initial data informed relief efforts and a community ranging from mountaineers to geophysicists to engineers is helping Nepal rebuild.

Communicating Cascadia's Earthquake Risk

Friday, October 16, 2015

Overarching questions addressed in this webinar include:

  • What does geoscience tell us about the risk posed by the Cascadia subduction zone?
  • How is earthquake science used in the decision-making process?
  • What challenges do state and local decision makers face responding to the threat of large-scale earthquakes in their area?
  • How can information about earthquake risk be communicated effectively to decision makers and the public?
  • What actions are state and local decision makers taking to prepare for the risks posed by Cascadia and other similar faults? What other actions could be taken?

Our speakers include:

  • Chris Goldfinger, Oregon State University | pdf download icon Slides  YouTube download icon Video
  • Jeff Rubin, Tualatin Valley Fire & Rescue | pdf download icon Slides   YouTube download icon Video
  • Tom Brocher, Earthquake Science Center, U.S. Geological Survey | Slides  YouTube download icon Video

Webinar Co-Sponsors:
U.S. Geological SurveyWestern States Seismic Policy Council, Oregon Seismic Safety Policy Advisory Commission

CEU Credits

To earn CEU credits, please complete the associated on-demand GOLI course that was developed from this webinar with a grade of 70% or higher and then submit your application for CEUs. CEUs are awarded from the American Institute of Professional Geologists. To view the full list of on-demand GOLI courses, please browse the GOLI course catalog.

Resources to learn more:

Search the Geological Surveys Database for reports and factsheets about earthquakes in the Cascadia region.

Communicating Cascadia's Earthquake Risk: The Science Behind the Cascadia Subduction Zone Risk

Critical Needs: Natural Hazards

To minimize the potential impact of natural hazards:

Encourage basic and applied research to strengthen community resilience. Geoscientists study the links between natural hazards and Earth processes and the ways natural hazards impact society. They identify hazard-prone areas through geologic mapping, seismic monitoring, and other investigations.

Visualization of drought in California

The U.S. Geological Survey provides a website of visualizations that show how California's extreme drought in the early-mid 2010s progressed through the early-mid part of the decade and then was relieved with significant rain and snowfall in 2016-2017. Visualizations of the extent and severity of drought, change in reservoir volumes, and streamflow compared to historic rates are all available on the website, which you scroll through to see different features.

Click here to see the visualization of California's drought

Visualization of ash cloud predictions from Mount St. Helens

The U.S. Geological Survey (USGS) Volcano Hazards Program's visualization shows the projected ash cloud for three differently-sized, hypothetical eruptions of Mount St. Helens. The visualizations depict a simulation of the spread of volcanic ash, based on a combination of wind data from the National Oceanic and Atmospheric Administration (NOAA) and volcanologist-derived eruption size parameters.

Visualization of a predictive model for weather hazards

The National Oceanic and Atmospheric Administration's (NOAA) Geophysical Fluid Dynamics Laboratory (GFDL) has created a visualization of their high-resolution global ocean-atmosphere-land-ice FLOR model. The FLOR model uses ocean, atmospheric, and other water-related data to improve understanding and prediction of the range of climate extremes. The outputs of the FLOR model have been used to understand predictability, change, and mechanisms of a range of climatic events including tropical cyclones, drought, rainfall and temperature over land, and changes in Arctic sea ice.

Interactive map of fault activity in California

The California Geological Survey's interactive map allows users to identify the location and classification of faults throughout California. Information available includes the age of the most recent activity on each fault segment, surface rupture areas, and whether or not the faults are visible at the surface.

Click here to use the California fault activity map.

Source: California Geological Survey


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