Elmer Ruigrok
E.N.Ruigrok@uu.nl
Researcher
Earth Sciences - Seismology
Gegenereerd op 2017-09-23 20:33:26


Profile

Research interests:

  • Seismic source location
  • Seismic interferometry
  • Lithospheric imaging
  • Obscure seismicity

Seismic waves are as ubiquitous in the solid part of the Earth as sound waves are in the atmosphere. Notorious sources of seismic waves are earthquakes and traffic. Seismic waves manifest themselves as vibrations of the Earth's surface. Recordings of these vibrations tend to be highly complicated, both due to refined source characteristics and the complex structures through which the waves propagate. As a consequence, it is hard to fully understand the vibration recordings. Yet, it is the complicated seismic arrivals that are key to further unravelling Earth's structure and its dynamics.

Elmer works on array methods to turn complicated seismic measurements into interpretable data. In the past, he developed methods for unveiling Earth structure. Currently, he focuses on obtaining source characteristics, especially from anthropogenically induced seismicity. Seismic sources related to human activity are, for example, wind farms, construction activity and compaction related to gas extraction.

 

 

Gegenereerd op 2017-09-23 20:33:26
Curriculum vitae

Personalia

 

Name: Elmer Niels Ruigrok

Born: January 14th, 1981, Eindhoven, NL

Nationality: Dutch

 

Excerpt of educational and professional experience

 

2016 – present : 80% Senior Seismologist at the Royal Netherlands Meteorological Insititute (KNMI), De Bilt, NL

                         20% Assistent Professor at the Department of Earth Sciences, Utrecht University, Utrecht, NL                          (Secondment from KNMI to UU)

2014 – 2015 : PostDoc at the Department of Earth Sciences, Utrecht University, Utrecht, NL

Autumn 2014 : Visiting PostDoc at the Earthquake Research Institute, University of Tokyo, Tokyo, JP

2012 – 2014 : PostDoc at the Department of Geoscience & Engineering, Delft University of technology, Delft, NL

2007 – 2012 : Ph.D. student at the Department of Geotechology, Delft University of technology, Delft, NL

Summer 2011 : Study visit to Physics Acoustics Lab, Boise State University, Boise, ID, US

Summer 2010 : Research internship at Shell International Exploration & Production B.V., Rijswijk, NL

Autumn 2008 : Work visit to Saudi Aramco EXPEC Advanced Research Centre, Dhahran, SA

Summer 2007 : Research internship at Schlumberger Doll Research, Cambridge, MA, US

1999 – 2006 : M.Sc. in Applied Geophysics, B.Sc. in Applied Earth Sciences, both at the Delft University of Technology, Delft, NL

Spring 2006 : Study visit to MIT Earth Resources Laboratory, Cambridge, MA, US

Summer 2004 : Research internship at Schlumberger Cambridge Research, Cambridge, UK

2003 : Erasmus exchange, Montanuniversität Leoben, Leoben, AT

2000 – 2001 : Treasurer of AEGEE-Delft, Delft, NL

1993 – 1999 : A-level secondary education (VWO) at Sint Willibrord Gymnasium, Deurne, NL

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[24] Snieder, R., C. Sens-Schoenfelder and E. Ruigrok, 2016, Elastic-wave propagation and the Coriolis force, Physics Today, 69(12), 90-91, doi: 10.1063/PT.3.3408.

[23] Ruigrok, E., S. Gibbons and K. Wapenaar, 2016, Cross-correlation beamforming, Journal of Seismology, article.

[22] Nishitsuji, Y., E. Ruigrok, M. Gomez, K. Wapenaar and D. Draganov, 2016, Reflection imaging of aseismic zones of the Nazca slab by global-phase seismic interferometry, Interpretation, 4(3), SJ1-SJ16.

[21] Snieder, R., C. Sens-Schoenfelder, E. Ruigrok and K. Shiomi, 2016, Seismic shear waves as Foucault pendulum, Geophysical Research Letters, 46(3), 2576-2581, doi: 10.1002/2015GL067598.

[20] Draganov, D. and E. Ruigrok, 2015, Passive seismic interferometry for subsurface imaging, Encyclopedia of Earthquake Engineering, doi: 10.1007/978-3-642-36197-5_378-1, article.

[19] van Dalen, K., D. Mikesell, E. Ruigrok, and K. Wapenaar, 2015, Retrieving surface waves from ambient seismic noise using seismic interferometry by multidimensional deconvolution, Journal of Geophysical Research - Solid Earth, 120, doi:10.1002/2014JB011262.

[18] Draganov, D., E. Ruigrok, R. Ghose, D. Mikesell and K. van Wijk, 2015, Quality-factor and reflection-coefficient estimation using surface-wave ghost reflections from subvertical structures, Journal of Applied Geophysics, 112, 206-214.

[17] Nishitsuji, Y., E. Ruigrok, M. Gomez and D. Draganov, 2014, Global-phase H/V spectral ratio for imaging the basin in the Malargüe region, Argentina. Seismological Research Letters, 85, 1004-1011.

[16] Frank, J., E. Ruigrok and K. Wapenaar, 2014, Shear wave seismic interferometry for lithospheric imaging: Application to southern Mexico, Journal of Geophysical Research - Solid Earth, 119, 5713-5726, doi:10.1002/2013JB010692, article.

[15] Ruigrok, E., 2014, Receiver-pair seismic interferometry applied to body-wave USArray data, Geophysical Journal International, 198, 895-905, article, GJI-link.

[14] Fricke, J.T., N. El Allouche, D.G. Simons, E. Ruigrok, K. Wapenaar and L.G. Evers, 2013, Infrasonic interferometry of stratospherically refracted microbaroms – a numerical study, J. Acoust. Soc. Am., 134, 2660-2668.

[13] Draganov, D, R. Ghose, K. Heller and E. Ruigrok, 2013, Monitoring changes in velocity and Q using non-physical arrivals in seismic interferometry, Geophysical Journal International, 192, 669-709.

[12] Mikesell, D., K. van Wijk, E. Ruigrok, A. Lamb and T. Blum, 2012, A modified delay-time method for statics estimation with the virtual refractor, Geophysics, 77, A29-A33.

[11] Ruigrok, E., D. Draganov, M. Gómez, J. Ruzzante, D. Torres, I. Lópes Pumarega, N. Barbero, A. Ramires, A.R. Castaño Gañan, K. van Wijk and K. Wapenaar, 2012, Malargüe seismic array: design and deployment of the temporary array, The European Physical Journal Plus, 127(10): 126, doi:10.1140/epjp/i2012-12126-7, article. ->The final publication is available at www.epj.org.

[10] Ruigrok, E., X. Campman and K. Wapenaar, 2012, Basin delineation with a 40-hour passive seismic record, Bulletin of the Seismological Society of America, 102, 2165-2176, doi:10.1785/0120110242, article.

[9] Ruigrok, E. and K. Wapenaar, 2012, Global-phase seismic interferometry unveils P-wave reflectivity below the Himalayas and Tibet, Geophysical Research Letters, Geophysical Research Letters, 39, L11303, doi:10.1029/2012GL051672, article, auxiliary material.

[8] Ruigrok, E., T.D. Mikesell and K. van Wijk, 2012, Scanning for velocity anomalies in the crust and mantle with diffractions from the core-mantle boundary, Geophysical Research Letters, 38, L11301, doi:10.1029/2012GL051443, article, auxiliary material.

[7] Ruigrok, E., X. Campman and K. Wapenaar, 2011, Extraction of P-wave reflections from microseisms, C. R. Geoscience, 343, 512-525, article.

[6] Wapenaar, K., J. van der Neut, E. Ruigrok, D. Draganov, J. Hunziker, E. Slob, J. Thorbecke and R. Snieder, 2011, Seismic interferometry by crosscorrelation and by multi-dimensional deconvolution: a systematic comparison, Geophysical Journal International, 185, 1335-1364.

[5] Wapenaar, K., E. Ruigrok, J. van der Neut and D. Draganov, 2011, Improved surface-wave retrieval from ambient seismic noise by multi-dimensional deconvolution, Geophysical Research Letters, 38, L01313, doi:10.1029/2010GL045523.

[4] Ruigrok, E., X. Campman, D. Draganov and K. Wapenaar, 2010, High-resolution lithospheric imaging with seismic interferometry, Geophysical Journal International, 183, 339-357, article.

[3] Draganov, D., R. Ghose, E. Ruigrok, J. Thorbecke and K. Wapenaar, 2010, Seismic interferometry, intrinsic losses and Q-estimation, Geophysical prospecting, 58, 361-373.

[2] Wapenaar, K, J. van der Neut and E. Ruigrok, 2008, Passive seismic interferometry by multidimensional deconvolution, Geophysics, 73, A51-A56.

[1] Ruigrok, E, D. Draganov and K. Wapenaar, 2008, Global-scale seismic interferometry: theory and numerical examples, Geophysical Prospecting, 56, 395-417, article.

 

Thesis

Ruigrok, E., 2012, Body-wave seismic interferometry applied to earthquake- and storm-induced wavefields, Delft University of Technology, BoxPress, thesis.

All publications
  2017 - Scholarly publications
Ruigrok, Elmer, Gibbons, Steven & Wapenaar, Kees (2017). Cross-correlation beamforming. Journal of Seismology, 21 (3), (pp. 495-508) (14 p.).
Weemstra, Cornelis, Draganov, Deyan, Ruigrok, Elmer N., Hunziker, Jürg, Gomez, Martin & Wapenaar, Kees (2017). Application of seismic interferometry by multidimensional deconvolution to ambient seismic noise recorded in Malargüe, Argentina. Geophysical Journal International, 208 (2), (pp. 693-714) (22 p.).
  2016 - Scholarly publications
Nishitsuji, Yohei, Ruigrok, E.N., Gomez, M., Wapenaar, K. & Draganov, Deyan (2016). Reflection imaging of aseismic zones of the Nazca slab by global-phase seismic interferometry. Interpretation, 4 (3), (pp. SJ1-SJ16).
Snieder, Roel, Sens-Schönfelder, C., Ruigrok, E. & Shiomi, K. (28.03.2016). Seismic shear waves as Foucault pendulum. Geophysical Research Letters, 43 (6), (pp. 2576-2581) (6 p.).
Snieder, Roel, Sens-Schönfelder, Christoph & Ruigrok, E.N. (2016). Elastic-wave propagation and the Coriolis force. Physics Today, 69 (12), (pp. 90-91) (2 p.).
  2015 - Scholarly publications
Draganov, Deyan & Ruigrok, E.N. (2015). Passive seismic interferometry for subsurface imaging. In M. Beer, I.A. Kougioumtzoglou, E. Patelli & I.S.-K. Au (Eds.), Encyclopedia of Earthquake Engineering (pp. 1-13). Springer.
Draganov, Deyan, Ruigrok, Elmer, Ghose, Ranajit, Mikesell, Dylan & van Wijk, Kasper (2015). Quality-factor and reflection-coefficient estimation using surface-wave ghost reflections from subvertical structures. Journal of Applied Geophysics, 112, (pp. 206-214) (9 p.).
Van Dalen, Karel N., Mikesell, T. Dylan, Ruigrok, Elmer N. & Wapenaar, Kees (2015). Retrieving surface waves from ambient seismic noise using seismic interferometry by multidimensional deconvolution. Journal of Geophysical Research: Solid Earth, 120 (2), (pp. 944-961) (18 p.).
  2014 - Scholarly publications
Frank, J. G., Ruigrok, E. N. & Wapenaar, K. (2014). Shear wave seismic interferometry for lithospheric imaging - Application to southern Mexico. Journal of Geophysical Research: Solid Earth, 119 (7), (pp. 5713-5726) (14 p.).
Nishitsuji, Yohei, Ruigrok, Elmer, Draganov, Deyan & Gomez, Martín (2014). Global-phase H/V spectral ratio for delineating the basin in the malargüe region Argentina. Seismological Research Letters, 85 (5), (pp. 1004-1011) (8 p.).
Ruigrok, E. (2014). Receiver-pair seismic interferometry applied to body-wave USArray data. Geophysical Journal International, 198 (2), (pp. 895-905) (11 p.).
  2013 - Scholarly publications
Draganov, Deyan, Ghose, Ranajit, Heller, Karel & Ruigrok, Elmer (01.02.2013). Monitoring changes in velocity and Q using non-physical arrivals in seismic interferometry. Geophysical Journal International, 192, (pp. 699-709).
Fricke, Julius T., El Allouche, Nihed, Simons, Dick G., Ruigrok, Elmer N., Wapenaar, Kees & Evers, Läslo G. (16.12.2013). Infrasonic interferometry of stratospherically refracted microbaroms - A numerical study. Journal of the Acoustical Society of America, 134 (4), (pp. 2660-2668) (9 p.).
  2012 - Scholarly publications
Mikesell, T. Dylan, van Wijk, Kasper, Ruigrok, Elmer, Lamb, Andrew & Blum, Thomas E. (2012). A modified delay-time method for statics estimation with the virtual refraction. Geophysics, 77.
Ruigrok, E., Campman, X. & Wapenaar, K. (2012). Basin Delineation with a 40-Hour Passive Seismic Record. Bulletin of the Seismological Society of America, 102 (5), (pp. 2165-2176).
Ruigrok, E., Draganov, D., Gómez, M., Ruzzante, J., Torres, D., Lópes Pumarega, I., Barbero, N., Ramires, A., Castaño Gañan, A. R., van Wijk, K. & Wapenaar, K. (2012). Malargüe seismic array: Design and deployment of the temporary array. European Physical Journal Plus, 127, (pp. 126).
Ruigrok, Elmer & Wapenaar, Kees (01.06.2012). Global-phase seismic interferometry unveils P-wave reflectivity below the Himalayas and Tibet. Geophysical Research Letters, 39.
Ruigrok, Elmer, Mikesell, T. Dylan & van Wijk, Kasper (01.06.2012). Scanning for velocity anomalies in the crust and mantle with diffractions from the core-mantle boundary. Geophysical Research Letters, 39.
  2011 - Scholarly publications
Ruigrok, Elmer, Campman, Xander & Wapenaar, Kees (01.09.2011). Extraction of P-wave reflections from microseisms. Comptes Rendus - Geoscience, 343, (pp. 512-525).
Wapenaar, Kees, Ruigrok, Elmer, van der Neut, Joost & Draganov, Deyan (01.01.2011). Improved surface-wave retrieval from ambient seismic noise by multi-dimensional deconvolution. Geophysical Research Letters, 38.
Wapenaar, Kees, van der Neut, Joost, Ruigrok, Elmer, Draganov, Deyan, Hunziker, Jürg, Slob, Evert, Thorbecke, Jan & Snieder, Roel (01.06.2011). Seismic interferometry by crosscorrelation and by multidimensional deconvolution: a systematic comparison. Geophysical Journal International, 185, (pp. 1335-1364).
  2010 - Scholarly publications
Ruigrok, Elmer, Campman, Xander, Draganov, Deyan & Wapenaar, Kees (2010). High-resolution lithospheric imaging with seismic interferometry. Geophysical Journal International, 183, (pp. 339-357).
  2008 - Scholarly publications
Ruigrok, Elmer, Draganov, Deyan & Wapenaar, Kees (2008). Global-scale seismic interferometry: theory and numerical examples. Geophysical Prospecting, 56, (pp. 395-417).
Wapenaar, Kees, van der Neut, Joost & Ruigrok, Elmer (2008). Passive seismic interferometry by multidimensional deconvolution. Geophysics, 73, (pp. 51).
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Gegenereerd op 2017-09-23 20:33:26

Elmer has an education in applied geophysics, but he drifted towards the field of seismology when he started to apply seismic interferometry and reflection imaging to naturally induced wavefields.

Naturally induced seismic wavefields are mainly caused by earthquakes and microseism sources. The first is generally known, the second source is a coupling of ocean-wave interaction with the solid earth. When naturally induced wavefields are measured at the Earth's surface, they contain many complicated reverberations from structure below the seismic sensor. With seismic interferometry in combination with reflection imaging, these multiple reverberations are used to make an image of this structure. Applications on different scales and to different wavefields can be found under 'Publications'.

Human activity in the subsurface, like pumping water in an aquifer, or hydrocarbon extraction, can be a cause of stress build-up along a fault: e.g., a differential pressure may develop between a reservoir compartment being partly emptied of gas, and a neighboring compartment that keeps fully pressurized. The stress can be released by a (sudden) slide along the fault: an earthquake. For mitigating this human induced seismicity, it is of paramount importance to understand where the seismicity is occurring. Using the first arriving waves at the Earth's surface yields a limited sensitivity in depth. To better focus the location of the seismic sources, Elmer investigates the use of multiple reverberations from structure near the source.

Gegenereerd op 2017-09-23 20:33:26

GEO4-1424 Reflection seismics computer lab and field work

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Additional functions and activities

Senior Seismologist at The Royal Netherlands Meteorological Insititute (KNMI)

Gegenereerd op 2017-09-23 20:33:26
Full name
E.N. Ruigrok Contact details
Willem C. van Unnikgebouw

Heidelberglaan 2
Room 8.23
3584 CS  UTRECHT
The Netherlands


Phone number (direct) +31 30 253 5085
Phone number (department) +31 30 253 5086
Willem C. van Unnikgebouw

Heidelberglaan 2
Room 0
3584 CS  UTRECHT
The Netherlands


Postal address
Postbus 80.115
3508 TC    UTRECHT
The Netherlands
Availability
Mo Tue Wed Thu Fr
Morning
Afternoon

All other days (Mo, Tue, Thu & Fri) I can be contacted at The Royal Netherlands Meteorological Institute (KNMI):

Utrechtseweg 297, 3731 GA De Bilt, Room A 3.05A

elmer.ruigrok@knmi.nl

Gegenereerd op 2017-09-23 20:33:26
Last updated 22.02.2017