The most recent seismic event was a magnitude 2. More information about earthquakes in Arkansas. Explore ». The Arkansas Geological Survey is committed to educating the public about earthquake issues in Arkansas. We have presented Earthquake: lectures to school classes, emergency management, and many community organizations.
Please contact the Arkansas Geological Survey if you are interested in scheduling a guest speaker. Earthquakes The Natural State has felt its fair share of earthquakes. View details ». Arkansas Earthquake Archive - This earthquake archive list was made from a selection of seismic events that have occurred from to present in Arkansas.
Arkansas Earthquake Archive - General Information Regarding Earthquakes. Earthquakes In Arkansas Numerous earthquakes occur every year throughout the State of Arkansas, but most go unnoticed. What Causes An Earthquake? Strike Slip Fault If the movement of a fault is predominately horizontal, the fault is considered a strike-slip fault. Dip Slip Faults If the movement along a fault is predominately vertical, the fault is considered to be a dip-slip fault, or in other words the displacement occurs along the dip plane of the fault.
Where Do Earthquakes Occur? Magnitude Scale There are two scales in common use that give some measure of the size of an earthquake. Seismic Waves Two main types of seismic waves are generated in an earthquake. Illustration courtesy of the USGS. Historic Earthquakes. Chiu, J. Jackson, K. Johnston, A. Johnston A. McFarland, J. Nuttli, O. Arkansas Seismic Network. Case Studies. Educational Resources. Preparedness and Response.
Felt indoors. Hanging objects swing. Vibration like passing of light trucks. May not be recognized as an earthquake.
Vibration like passing of heavy trucks; or sensations of a jolt like a heavy ball striking the walls. Standing motor cars rock. Windows, dishes, doors rattle. Glasses clink. Crockery clashes. In the upper range of IV, wooden walls and frame creak. Felt outdoors; direction estimated. Sleepers wakened. Liquids disturbed, some spilled.
Small unstable objects displaced or upset. Doors swing, close, open. Shutters, pictures move. A new public service announcement about the museum featured former presidents George W. Bush, Bill Clinton and Barack Obama. The U. House recently voted unanimously to take the first steps toward creating a Medal of Honor memorial on the National Mall, and the bill now is in the Senate.
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Adobe Stock Social Issues. Ashley Nellis, senior …. Three …. Phone: Thursday, November 11, PNS Newscasts. The Yonder Report. Play Subscribe. The Yonder Report - November 11, Currently, paleoseismologists have found evidence of three or more large earthquakes magnitude 7. The last strong earthquake magnitude 6. A magnitude 6.
It must be understood that the physical evidence of past earthquakes in the NMSZ is very sparse and can be difficult to study. Scientists have made great strides in the last 50 years in understanding this complex area. A magnitude 7. Significant damage will likely extend north up the Mississippi River valley to St. Significant damage is also expected in of southern Illinois, western Kentucky and Tennessee, northeastern Arkansas and northwestern Mississippi as well as in areas of southeast Missouri outside the Bootheel.
The earthquakes in the New Madrid Seismic Zone impacted most of the simple buildings in New Madrid and Little Prairie Caruthersville , the two towns in the area at the time. Approximately 5, square miles or about 3.
The basic single story log buildings, which are in fact a very earthquake resistant type of construction, often shifted or sunk as parts of the areas submerged and flooded. Much of area became unusable for the subsistence type agriculture of that day. Some buildings in St. Louis, miles or more to the north, received damage consisting mostly of broken or collapsed stone chimneys and broken stone buildings of Unreinforced Masonry URM construction.
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Other Online Encyclopedias Other Resources. Lesson Plans History Day Volunteers Donors. Entries All Entries Earthquakes. Earthquakes Numerous earthquakes occur every year throughout the state of Arkansas, but most go unnoticed. Type Thing. Login to the CALS catalog!
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