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Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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FREQUENTLY ASKED QUESTIONS NATURAL HAZARDS
Oklahoma has had a surge of earthquakes since 2009. Are they due
to fracking?
Beginning in 2009, Oklahoma experienced a surge in seismicity. This surge was so large that its rate of magnitude 3 and
larger earthquakes exceeded California's from 2014 through 2017.
While these earthquakes have been induced by oil and gas related process, few
of these earthquakes were induced by fracking. The largest earthquake known
to be induced by hydraulic fracturing in Oklahoma was a M3.6 earthquakes in
2019. The largest known fracking induced earthquake in the United States was
a M4.0 earthquake that occurred in Texas in 2018. The majority of earthquakes
in Oklahoma are caused by the industrial practice known as "wastewater
disposal". Wastewater disposal is a separate process in which fluid waste from
oil and gas production is injected deep underground far below ground water or
drinking water aquifers. In Oklahoma over 90% of the wastewater that is
injected is a byproduct of oil extraction process and not waste frack fluid.
Learn more: USGS Induced Earthquakes
Number of M3+ Earthquakes
2500
2000
1500
1000
500
0
California
Oklahoma
1990
Sources/Usage: Public Domain.
1995 2000 2005 2010 2015
Bar graph showing the number of M3+
Earthquakes in Oklahoma vs California from
1990 to 2019. California earthquake counts
are shown as a blue bar and Oklahoma
earthquake counts are shown as a red bar.
(Public domain.)
Explore Search
Induced Earthquakes
Natural Hazards
Natural Hazards
earthquakes
Hydraulic Fracturing
View All ↓
Transcribed Image Text:FREQUENTLY ASKED QUESTIONS NATURAL HAZARDS Oklahoma has had a surge of earthquakes since 2009. Are they due to fracking? Beginning in 2009, Oklahoma experienced a surge in seismicity. This surge was so large that its rate of magnitude 3 and larger earthquakes exceeded California's from 2014 through 2017. While these earthquakes have been induced by oil and gas related process, few of these earthquakes were induced by fracking. The largest earthquake known to be induced by hydraulic fracturing in Oklahoma was a M3.6 earthquakes in 2019. The largest known fracking induced earthquake in the United States was a M4.0 earthquake that occurred in Texas in 2018. The majority of earthquakes in Oklahoma are caused by the industrial practice known as "wastewater disposal". Wastewater disposal is a separate process in which fluid waste from oil and gas production is injected deep underground far below ground water or drinking water aquifers. In Oklahoma over 90% of the wastewater that is injected is a byproduct of oil extraction process and not waste frack fluid. Learn more: USGS Induced Earthquakes Number of M3+ Earthquakes 2500 2000 1500 1000 500 0 California Oklahoma 1990 Sources/Usage: Public Domain. 1995 2000 2005 2010 2015 Bar graph showing the number of M3+ Earthquakes in Oklahoma vs California from 1990 to 2019. California earthquake counts are shown as a blue bar and Oklahoma earthquake counts are shown as a red bar. (Public domain.) Explore Search Induced Earthquakes Natural Hazards Natural Hazards earthquakes Hydraulic Fracturing View All ↓
• Write the FAQ that you chose and include the link.
• Summarize the answer to the question and explanation in 3-6 sentences in your own words. Do not copy from the website!
Transcribed Image Text:• Write the FAQ that you chose and include the link. • Summarize the answer to the question and explanation in 3-6 sentences in your own words. Do not copy from the website!
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