Cluster of 96 Yellowstone earthquakes (10-11 September 2020) 2

            This map shows a cluster of 96 earthquake events that occurred on the 10th and 11th of September 2020 south of Yellowstone Lake's West Thumb.  Quake magnitudes ranged from 0.1 to 2.8.  Clusters of earthquakes are called "swarms".

Update: a total of 114 earthquakes occurred.
--------------------------------
An earthquake is a natural shaking or vibrating of the Earth caused by sudden fault movement and a rapid release of energy.  Earthquake activity is called "seismicity".  The study of earthquakes is called "seismology".  The actual underground location of an earthquake is the hypocenter, or focus.  The site at the Earth's surface, directly above the hypocenter, is the epicenter.  Minor earthquakes may occur before a major event - such small quakes are called foreshocks.  Minor to major quakes after a major event are aftershocks.

Most earthquakes occur at or near tectonic plate boundaries, such as subduction zones, mid-ocean ridges, collision zones, and transform plate boundaries.  They also occur at hotspots - large subsurface mantle plumes (Examples: Hawaii, Yellowstone, Iceland, Afar).

Earthquakes generate four types of shock waves: P-waves, S-waves, Love waves, and Rayleigh waves.  P-waves and S-waves are body waves - they travel through solid rocks.  Love waves and Rayleigh waves travel only at the surface - they are surface waves.  P-waves are push-pull waves that travel quickly and cause little damage.  S-waves are up-and-down waves (like flicking a rope) that travel slowly and cause significant damage.  Love waves are side-to-side surface waves, like a slithering snake.  Rayleigh waves are rotational surface waves, somewhat like ripples from tossing a pebble into a pond.

Earthquakes are associated with many specific hazards, such as ground shaking, ground rupturing, subsidence (sinking), uplift (rising), tsunamis, landslides, fires, and liquefaction.

Some famous major earthquakes in history include: Shensi, China in 1556; Lisbon, Portugal in 1755; New Madrid, Missouri in 1811-1812; San Francisco, California in 1906; Anchorage, Alaska in 1964; and Loma Prieta, California in 1989.

Some rights reserved

Taken on: September 12, 2020

Tags:

Yellowstone

Wyoming

earthquakes

quake

quakes

September

2020

Lake

West

Thumb

cluster

swarm

swarms

seismogram

seismograms « less

Sets appears in: • 2020 Earthquakes • Wyoming Earthquakes more » • Earthquake Swarms • Earthquakes « less

Groups appears in: • Earth Science Teaching Resource

Stats: 1,607 views

close tools panel

Badge creator

Use Flickriver Badge Creator to create a badge linking to your photos, your group or any other Flickriver view.

You can place your badge on your Flickr profile, Blog or Website.

Add to your iGoogle or Netvibes page

Flickriver widget for iGoogle or Netvibes can display almost any Flickriver view - most interesting today, by user, by group, by tag etc. Once added to your personalized homepage, just edit widget settings to select your desired view.

Clickr on one of the buttons below to install:

Embed on your Web site

To embed this view, Copy and Paste the following HTML code:

Black background (preview):

White background (preview):

Firefox and Chrome addons

Adds a 'Flickriver' button to your browser. While viewing any Flickr photos page, click on this button to open the same view on Flickriver.

Install in Firefox
Install in Chrome

Search plugin

Add 'Search on Flickriver' to your browser's search box. Works with Firefox and Internet Explorer. Install search plugin

"View on Flickriver" Greasemonkey script

A Greasemonkey script that adds Flickriver links to various Flickr photo pages - user photos, favorites, pools etc, allowing to quickly open the corresponding Flickriver view.

Also, allows quickly viewing any Flickr photo on black background in large size.

Install "View on Flickriver" script

Bookmarklet

While viewing any Flickr photos page, click on the bookmarklet to open the same view on Flickriver.

To install: drag and drop the following link to your Bookmarks toolbar.
IE users - add the link to your Favorites under the Links folder