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Date


09/2018
NEWS

News coverage of our recent article "The spatial footprint of injection wells in a global compilation of induced earthquake sequences":
     Washington Post,     SF Chronicle,    Phys.org
spatial footprint paper
02/2018
NEWS

Why some fracking wells triggering significant earhtquakes:
CBC News, http://science.sciencemag.org/content/359/6373/304

11/2017
Dec. 11-15, 2017
CONFERENCE



AGU
We have two sessions at AGU in New Orleans.
1) Earthquake source: from the lab to the field
2) Fault structure, hydrology, (a)seismic slip processes
Please feel free to contact me if you have questions:
08/2017
August 09th
PUBLICATION
Our new study casts doubts on the longterm decay rate of induced seismicity  in Oklahoma and the model used to assess seismic hazard in a previous study.
Here is our comment, the original paper and response. Here is also a short press release summarizing our findings:
07/2017
July, 2017
PUBLICATION
PRL
What causes event-event triggering of tiny microseismic events in laboratory fracture experiments? Take a look at our recent paper in PRL:
“Triggering processes in rock fracture: On the importance of large-scale heterogeneities”, Physical Review Letters, [preprint, supplement]
06/2017
June 12th, 2017
VIDEO
USGS logo Earthquake Science Center seminar talk at the USGS, Menlo Park:
What allows seismic events to grow big?: Insights from b-value and fault roughness analysis in stick-slip epxeriments.
06/2017
June 1st, 2017
PUBLICATION
pageoph
Special topical volume "Earthquake hazard around the pacific rim" published in Pure and Applied Geophysics.




06/2017
June 2017
PUBLICATION


Induced seismicity paper published in EPSL

Highlights:
  • A fluid injection field induced moderate earthquakes as far away as 40 km.
  • Poroelastic solid stresses are larger than fluid pressures at such large distances.
  • Densely spaced wells form a coherent source extending the reach of poroelasticity.
  • Resulting Coulomb-stress-changes are comparable to static triggering stresses.
          download pdf, go to EPSL
07/2016
July 2016
PUBLICATION
Image result for journal of geophysical research logo Do we really know more about induced than tectonic earthquakes? Our recent paper in JGR showed, that the maximum magntiudes of induced earthquakes are as large as expected from Gutenberg-Richter scaling. This means that rather than applying a deterministic frame work to induced earthquakes the same probabilistic framework should be used for tectonic and induced seismic hazard assessment. More details can be found here.
02/2016
February 2016
PUBLICATION
GRL
First study that provides detailed assessment of wastewater injection and seismicity in California hydrocarbon basins:
Wastewater disposal and earthquake swarm activity at the southern end of the Central Valley, California, Geophys. Res Lett., Goebel, Hosseini, Cappa, Hauksson, Ampuero, Aminzadeh, Saleeby
In the News: KABC, SF chronicle, Nature Research Highlights
11/2015
Jan. 2016
SHORT COURSE
spe logo
Short Course: Advanced monitoring of micro-seismicity and application to reservoir characterization and fracture growth
Instructor: Dr. Thomas H.W. Goebel, UCSC
 -Topics range from travel-time and stress inversion, source mechanisms, fractal dimension, b-value analysis to fracture monitoring and fault activation
Date: January 26, 2016 (8:00 am to 4:00 pm)
Location: University of Phoenix, 4900 California, Ave, Bakersfield, California.
See page 10 of the SPE Newsletter or contact me if you have questions
10/2015
October 2015
PUBLICATION
Image result for journal of geophysical research logo Statistical analysis of likely induced seismicity in central valley, California, published in JGR:
An objective method for the assessment of fluid injection-induced seismicity and application to tectonically active regions in central California, Goebel, Hauksson, Ampuero, Aminzadeh
09/2015
September 2015
VIDEO
CA ind. seismicity
USGS logo
Seismogenic response to fluid injection in California hydrocarbon basins: The role of permeability structure and implications for crustal stresses, USGS Earthquake Science Center Seminar, watch the video recording here
                                          
08/2015
June 2015
PUBLICATION
Image result for SEG logo Special Volume of 'The Leading Edge' on induced seismicity including a comparative study between Oklahoma and California

04/2015 April, 2015
NEWS

Induced seismicity covered by major news outlets:
Nature:        Induced Earthquakes in Oklahoma
LA-Times:  Recent increase in seismicity rates in the central U.S.
NY-Times: Article about Induced Seismicity

Oct. 30, 2014
Image result for USEA logo Invited talk during informational hearing on induced seismicity organized by USEA, DOE and SPE,
Washington, D.C.
:
"Subsurface Technologies Engineering Challeneges and R&D Opportunities, Stress State and Induced Seismcity"
9/2014
Sept. 09, 2014
Image result for SCEC logo Plenary talk at this year annual Southern California Earthquake Center meeting,
Palm Springs, CA
:
"Waste water injection induced seismicity in naturally-active, seismogenic regions in central California "

Last update: February 5th, 2018



Thomas Goebel    |    University of California, Santa Cruz    |    Seismological Laboratory
1156 High Street    |    Santa Cruz, CA 95064    |    tgoebel(at)ucsc.edu





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