[CEUS-earthquake-hazards] Fwd: Rubenstein IRIS seminar on induced seismicity Feb 3

[Williams, Robert]

The following is an announcement about a presentation on induced seismicity
by Justin Rubinstein (USGS).

Best regards,
Rob
---------- Forwarded message ----------
From: Blanpied, Michael <mblanpied at usgs.gov>
Date: Thu, Jan 28, 2016 at 8:06 AM
Subject: Rubenstein IRIS seminar on induced seismicity Feb 3
To: William Leith <wleith at usgs.gov>, Cecily Wolfe <cwolfe at usgs.gov>, David
Applegate <applegate at usgs.gov>, "Dr. Jill McCarthy" <jmccarthy at usgs.gov>,
Robert A Williams <rawilliams at usgs.gov>


Many of us will be tied up in travel and meetings, but just FYI in case you
missed it or would like to forward the notice to others:  Justin Rubenstein
will give an IRIS webinar on induced seismicity this coming Wednesday
afternoon.

Mike

------------------------------

Message: 2
Date: Wed, 27 Jan 2016 09:37:56 -0500
From: Danielle Sumy <danielle.sumy at iris.edu>
To: Danielle Sumy <sumy at iris.edu>
Subject: [iris-bulk] IRIS WEBINAR - Yes,        Humans Really Are Causing
        Earthquakes - 2/3 3 PM Eastern
Message-ID: <C4A7E00F-C5A6-4B69-BB5A-95498F666CA0 at iris.edu>
Content-Type: text/plain; charset="utf-8"

Please register for Yes, Humans Really Are Causing Earthquakes - February
3, 2016 on Feb 3, 2016 3:00 PM EST at:

https://attendee.gotowebinar.com/register/474442938119897601 <
https://attendee.gotowebinar.com/register/474442938119897601>

Presenter: Justin Rubinstein, USGS-Menlo Park

Abstract: The central United States is experiencing an unprecedented surge
in earthquakes that began in 2009, rising from an average of 21 magnitude 3
and larger quakes to over 650 in 2014 alone. This increased earthquake
activity is found in just a few concentrated regions around the country,
with the lion?s share in Oklahoma. In 2014 there were more magnitude 3, and
larger, earthquakes in Oklahoma than there were in California. The
increased earthquake activity is limited to areas of new and emerging oil
and gas production and is undoubtedly caused by some of the techniques they
use.

With a focus on oil and gas production and related techniques, I will
discuss the many ways that humans can cause earthquakes. In the case of
fluid injection, the primary source of the recent increase in earthquake
rate, the fluid pressure increase from injection can be transferred many
miles from the injection point. This fluid-pressure increase, in effect,
lubricates the faults, making them more prone to slipping in earthquakes.

Recent research shows that the rate at which injection occurs strongly
influences whether earthquakes will be induced; areas with higher injection
rates are more likely to have induced earthquakes. Other parameters, like
the total volume injected and the depth of injection are also believed to
affect the likelihood of induced earthquakes. Additionally, local
geological conditions are important; despite similar injection practices,
there is very little injection-induced seismicity in North Dakota in stark
contrast to Oklahoma.

After registering, you will receive a confirmation email containing
information about joining the webinar. NOTE: Registration does not confirm
or guarantee you will have a spot during the webinar, as we are limited to
100 participants. Webinars are archived for later viewing at
https://www.youtube.com/playlist?list=PLD4D607C2FA317E6D <
https://www.youtube.com/playlist?list=PLD4D607C2FA317E6D>
___________________________
Danielle Sumy, PhD
Project Associate
Instrumentation Services
Education and Public Outreach
Phone: 202-682-2220 x168
Email: danielle.sumy at iris.edu


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-- 
Robert Williams
Central & Eastern U.S. Coordinator
USGS Earthquake Hazards Program
1711 Illinois St
Golden, CO 80401
303-273-8636
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