Natural Hazards

Filter Total Items: 491
Date published: August 21, 2019
Status: Completed

Potential Landslide Paths and Implications for Tsunami Hazards in Glacier Bay, Alaska – An Initial Investigation

Glacier Bay and its inlets are a popular destination for cruise ships and passenger boats; about 540,000 people visited Glacier Bay National Park and Preserve (GBNPP) in 2017. A typical tour of the Bay traverses the entire length up to the glacier calving viewpoints in the Johns Hopkins and Tarr Inlets.  A 2018 article “Landslides and Giant Waves” by the National Park Service (NPS) states, “...

Date published: August 11, 2019
Status: Active

Earthquake Hazards Program Management

Meet the Program Managers!

Date published: August 6, 2019
Status: Completed

The Modified Mercalli Intensity Scale

  

Date published: August 6, 2019
Status: Active

Earthquake Hazards 201 - Technical Q&A

A list of technical questions & answers about earthquake hazards.

Date published: August 6, 2019
Status: Active

Earthquake Hazards 101 - the Basics

What is earthquake hazard?

Earthquake ground shaking varies from place to place and the hazard mapping in this project will show this variability. The mapped hazard refers to an estimate of the probability of exceeding a certain amount of ground shaking, or ground motion, in 50 years. The hazard depends on the magnitudes and locations of likely earthquakes, how often they occur, and the...

Date published: August 6, 2019
Status: Active

Introduction to the National Seismic Hazard Maps

  

Date published: August 5, 2019
Status: Active

Request for Hazard Modeling Contributions

  

Date published: August 5, 2019
Status: Completed

The Great M7.9 1857 Fort Tejon Earthquake

The Last "Big One"

Date published: August 5, 2019
Status: Completed

M6.9 October 17, 1989 Loma Prieta Earthquake

On October 17, 1989, at 5:04:15 p.m. (PDT), a magnitude 6.9 earthquake severely shook the San Francisco and Monterey Bay regions. The epicenter was located near Loma Prieta peak in the Santa Cruz Mountains, approximately 14 km (9 mi) northeast of Santa Cruz and 96 km (60 mi) south-southeast of San Francisco.

Date published: August 5, 2019
Status: Completed

M5.8 August 23, 2011 Mineral, Virginia

On August 23, 2011 tens of millions of people along the East Coast suddenly felt the earth shaking from the largest earthquake in the eastern U.S. since the M5.8 earthquake in 1944 near Cornwall and Massena, New York.

Date published: August 5, 2019
Status: Completed

M6.0 South Napa, California Earthquake – August 24, 2014

  

Date published: August 5, 2019
Status: Completed

M5.3 2017 Soda Springs, Idaho Sequence

- last updated September 27, 2017 1:40 PST