Two-year survey comparing earthquake activity and injection-well locations in the Barnett Shale, Texas

Proceedings of the National Academy of Sciences of the United States of America
Cliff Frohlich


Between November 2009 and September 2011, temporary seismographs deployed under the EarthScope USArray program were situated on a 70-km grid covering the Barnett Shale in Texas, recording data that allowed sensing and locating regional earthquakes with magnitudes 1.5 and larger. I analyzed these data and located 67 earthquakes, more than eight times as many as reported by the National Earthquake Information Center. All 24 of the most reliably located epicenters occurred in eight groups within 3.2 km of one or more injection wells. These included wells near Dallas-Fort Worth and Cleburne, Texas, where earthquakes near injection wells were reported by the media in 2008 and 2009, as well as wells in six other locations, including several where no earthquakes have been reported previously. This suggests injection-triggered earthquakes are more common than is generally recognized. All the wells nearest to the earthquake groups reported maximum monthly injection rates exceeding 150,000 barrels of water per month (24,000 m(3)/mo) since October 2006. However, while 9 of 27 such wells in Johnson County were near earthquakes, elsewhere no earthquakes occurred near wells with similar injection rates. A plausible hypothesis to explain thes...Continue Reading


Oct 3, 2012·Environmental Health Perspectives·Bob Weinhold
Jul 13, 2013·Science·William L Ellsworth
Feb 7, 2016·The Science of the Total Environment·Khaled Moustafa
Jan 23, 2016·American Journal of Public Health·Jill E JohnstonDaniel Sebastian
Feb 18, 2016·Environmental Science & Technology·Mengjun YuAvner Vengosh
Mar 19, 2015·Environmental Science and Pollution Research International·Peter J DaviesStuart J Khan
Nov 6, 2013·Proceedings of the National Academy of Sciences of the United States of America·Wei Gan, Cliff Frohlich
Aug 27, 2014·Scientific Reports·Francesco Mulargia, Andrea Bizzarri
Apr 22, 2015·Nature Communications·Matthew J HornbachJames H Luetgert
Jul 24, 2020·Database : the Journal of Biological Databases and Curation·Owen WetherbeeMary Regina Boland
Jul 31, 2019·Proceedings of the National Academy of Sciences of the United States of America·Guang ZhaiXiaowei Chen
Jun 18, 2020·Nature Communications·Maryam Alghannam, Ruben Juanes
Nov 20, 2016·Science·Xuewei Bao, David W Eaton
May 14, 2021·Scientific Reports·Deepak K TiwariNaresh K Vissa
Jun 1, 2019·The Science of the Total Environment·Jacob T ShawRobert S Ward
Feb 18, 2020·Environmental Science & Technology·Bridget R ScanlonRobert C Reedy

❮ Previous
Next ❯

Related Concepts

Trending Feeds


Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.


Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.


Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.