Images

YBP is an abbreviation for "years before present".

Formation of Earth: 4.6x10^9 YBP

Dinosaur extinction: 6.5x10^7 YBP

First hominids: 2x10^6 YBP

Last great ice age: 1x10^4 YBP

Declaration of Independence: 2x10^2 YBP

Establishment of UWB: 1x10 YBP

High, medium, and low amplitude. The amplitude is the size of the wiggles on an earthquake recording.

Figure 2.

Figure 1. Chance of minor or greater damaging earthquake shaking in the next 100 years. Population exposure estimates are rounded to the nearest 1000. 

Seismicity of Hawaii: earthquakes M>5 from the 1840-1899, 1900-1959, 1960-2019 catalogs shown separately. While earthquake activity remains high today, it seems to have decreased over the past 60 years, which could be related to less volcanic activity at Mauna Loa. 

Debris flow caused by intense rainfall from Tropical Storm Fred in August 2021. Haywood County, NC. 

2018 Long-term National Seismic Hazard Map. Earthquake hazard map showing peak ground accelerations having a 2 percent probability of being exceeded in 50 years, for a firm rock site.  The map is based on the most recent USGS models for the conterminous U.S.

Debris flow deposits caused by intense rainfall in April 2020 block a highway in Macon County, NC. 

Debris flow caused by intense rainfall in April 2020 in Macon County, NC. 

Damage from a major post-wildfire landslide that occurred on 9 January 2018 near Montecito, Santa Barbara County as a result of the 2017 Thomas Fire.

Damage from a major post-wildfire landslide that occurred on 25 December 2003 near Devore, San Bernardino County as a result of the Old/Grand Prix fires that ran through the San Bernardino Mountains.

Alex Hatem stands in front of 1983 Borah Peak rupture with actual Borah Peak in the background. 

3,557 earthquakes recorded since July 4, 2019 above Magnitude 2

M6.4 12km W of Searles Valley, CA
2019-07-04 17:33:49 (UTC)
51,000+ responses via Did You Feel It?

M7.1 18km W of Searles Valley, CA
2019-07-06 03:19:53 (UTC)
42,000+ responses via Did You Feel It?

Highway 178 SW of Trona. Taken earlier in the morning July 6, 2019 after the M7.1 earthquake which struck eastern California, southwest of Searles Valley, near Ridgecrest, CA.

Landslide caused by intense rainfall in June 2019 in Powell County, KY. The landslide completely destroyed the first floor and all that remains in is the second floor of the home, displayed in this image. 

A debris flow in Marin County triggered by intense rainfall destroyed several homes and injured one person during February 2019.  View is looking from the top of the landslide downslope.

Heavy rainfall reactivated the 9 acre Howard Gap Landslide in February 2019, severely damaging a highway in Polk County, NC. This image only shows a small portion of a much larger landslide.

A landslide caused by intense rainfall from Hurricane Maria in September 2017 in Puerto Rico hit this home, killing three people. 

Cracks in a hillslope caused by slow landslide movement in Rockcastle County, Kentucky.

Damage from a major post-wildfire landslide that occurred on 9 January 2018 near Montecito, Santa Barbara County as a result of the 2017 Thomas Fire.

Excerpt of satellite image showing landslide impacts to roads, agriculture, and a reservoir in the Lares Municipality. Points identify the approximate location of roads visibly impacted by landslides. Image filename contains approximate latitude and longitude of this impact location.