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Fracking

Human-made earthquake risk reduced if fracking is 895m from faults

seismogram

Earthquakes follow wastewater disposal patterns in southern Kansas

This schematic illustration of the 2014 Iquique earthquake off the coast of Chile (magnitude 8.1) shows the locations of foreshocks (blue) and aftershocks (red) relative to the area of large slip on the fault (contour lines).

Analysis of major earthquakes supports stress reduction assumptions

Earthquake simulation

Hayward fault earthquake simulations increase fidelity of ground motions

This new map of Earth’s stress field in the Permian Basin of West Texas and southeastern New Mexico could help energy companies avoid causing earthquakes associated with oil extraction. Credit: Jens-Erik Lund Snee

Seismic stress map profiles induced earthquake risk for West Texas, New...

Pipeline monument, Cushing, Oklahoma.

Oklahoma’s earthquakes strongly linked to wastewater injection depth

Researchers taking sediment cores on Chilean lake Calafquén (with Villarrica Volcano in the background).

Giant earthquakes: Not as random as thought

Moon

Do moon phases produce big earthquakes?

A UAlberta researcher is the first to link the likelihood of earthquakes caused by hydraulic fracturing to the location of well pads and volume of liquid used in the process.

Fox Creek earthquakes linked to completion volume and location of hydraulic...

Seismogram

Rates of great earthquakes not affected by moon phases, day of...

Earthquakes as a driver for the deep-ocean carbon cycle

Annual geographic centroid locations for the years 2011-2016 (the underlying fault map is by Marsh and Holland, 2016), including volume-weighted well centroids, the 1σ radius of gyration, and M3+ earthquake centroids.

Shakedown in Oklahoma: To cut the number of bigger earthquakes, inject...

Wastewater injected in an underground reservoir layer crossed by a fault triggers an earthquake

Modeling the effects of wastewater injection

The Nazca plate moves eastwards with a rate of 6.6 cm per year.

Residual strain despite mega earthquake

The number of earthquakes striking south-central Kansas has skyrocketed

Geologists report new discoveries about Kansas, Oklahoma earthquakes

Small earthquakes (yellow stars) can be induced during hydraulic fracturing when high-pressure fluid (blue arrows) is pumped into horizontal wells to crack rock layers containing natural gas.

Small earthquakes at fracking sites may be early indicators of bigger...

Distribution of intraplate earthquakes in central and eastern North America

Ancient weakening of Earth’s crust explains unusual intraplate earthquakes

The time variation of seismic velocity relative to the averaged pre-earthquake value are displayed.

Unearthing the underground effects of earthquakes and volcanoes

erkeley Lab team that used fiber optic cables for detecting earthquakes and other subsurface activity.

Using Sensors Beneath Our Feet to Tell Us About Earthquakes, Water,...

Everest

Earthquakes in the Himalaya are bigger than in the Alps because...

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