Natural Hazards

Filter Total Items: 551
Date published: October 17, 2019
Status: Active

Using Video Imagery to Study Wave Dynamics: Unalakleet

USGS scientists installed two video cameras atop a windmill tower in Unalakleet, Alaska, pointing westward over Norton Sound, to observe and quantify coastal processes such as wave run-up, development of rip channels, bluff erosion, and movement of sandbars and ice floes.

Date published: October 11, 2019
Status: Active

Central U.S. Seismic Velocity Model

  

Date published: October 11, 2019
Status: Active

Liquefaction Hazard Maps

Overview

Liquefaction is a phenomenon that is caused by earthquake shaking. Wet sand can become liquid-like when strongly shaken. The liquefied sand may flow and the ground may move and crack, causing damage to surface structures and underground utilities.

Date published: October 10, 2019
Status: Active

Urban Seismic Hazards

  

Date published: October 9, 2019
Status: Completed

2018 NSHM Update Workshop

March 7-8, 2018
Newark, CA
Risk Management Solutions Headquarters

The following links are to PDF versions of the workshop presentations. All workshop participants have granted permission to post their presentations. If you prefer, you can download all of the presentations in one...

Date published: October 9, 2019
Status: Active

Tweet Earthquake Dispatch

The USGS is offering earthquake alerts via two twitter accounts @USGSted and @USGSBigQuakes.

Date published: October 8, 2019
Status: Completed

Earthquake Early Warning – Fine-Tuning for Best Alerts

The goal of an earthquake early warning (EEW) system is to provide an alert to people and automatic systems after an earthquake begins but before the shaking reaches their location. As the USGS and its partners are developing an EEW system, called ShakeAlert®, for the West Coast, the benefits, costs, capabilities, and limitations are being investigated. Two recent studies explored the...

Date published: October 3, 2019
Status: Active

National Seismic Hazard Model Project Team

Staff and collaborators on the National Seismic Hazard Model Team

Date published: October 2, 2019
Status: Completed

Summary of 1811-1812 New Madrid Earthquakes Sequence

  

Date published: October 2, 2019
Status: Completed

1811-1812 New Madrid, Missouri Earthquakes

Details about the New Madrid, Missouri Earthquakes.

Date published: September 30, 2019
Status: Completed

Could the M7.1 Ridgecrest, CA Earthquake Sequence Trigger a Large Earthquake Nearby?

Release Date: SEPTEMBER 30, 2019

Two of the first questions that come to mind for anyone who just felt an earthquake are, “Will there be another one?” and “Will it be larger?”.