# Dr Doug Angus

## Associate Professor: Seismic Geomechanics

**Email address:** d.angus@leeds.ac.uk

**Room:** 8.141

**Affiliation:** Institute of Applied Geoscience, Institute of Geophysics and Tectonics

#### Biography

Doug Angus has been involved in seismic research for over 15 years and has published on a diverse range of problems, spanning theoretical seismology, global seismology as well as hydrocarbon, carbon storage and engineering scale problems. His core expertise is in elastic and acoustic waveform simulation of seismic body-waves. He is involved in various energy studies related to modelling/monitoring geological storage of CO_{2} and nuclear waste, and conventional/unconventional hydrocarbon reservoir characterisation. This research is heavily multi-disciplinary, involving the integration of seismology, rock and petro physics, hydro-mechanics and geodesy. As well, he is active in global and theoretical seismology, concentrating on the structure of the crust and lithosphere using receiver function modelling and analysis, as well as waveform modelling of seismic anisotropy.

- EPSRC Early Career Fellow (2013-present)
- Associate Professor of Seismic Geomechanics, University of Leeds (2013-present)
- RCUK Research Fellow, University of Leeds (2008-2013)
- Research Associate, University of Bristol (2006-2008)
- Post-doctoral Research Fellow, New Mexico State University (2005-2006)

**Please note I do not have the funds to support research internships.**

#### Research Interests

- Seismic geomechanics (petroluem reservoir characterization, geo-sequestration of CO
_{2}and nuclear waste) - Seismology (computational, theoretical and applied)
- Microseismic modelling and monitoring
- Rock physics
- Tectonics (lithospheric imaging, receiver functions and shear-wave splitting modelling)

#### Teaching Interests

- Seismic fundamentals, seismic theory and computational seismology
- Time-lapse (4D) seismic and passive seismic (microseismic) methods
- Applied geophysical methods

## Publications

- Roach LAN; White DJ; Roberts B;
**Angus D**(2017) Initial 4D seismic results after CO 2 injection start-up at the Aquistore storage site,*GEOPHYSICS*,**82**, pp.B95-B107. doi: 10.1190/geo2016-0488.1 - Birnie C; Chambers K;
**Angus D**(2017) Seismic arrival enhancement through the use of noise whitening,*PHYSICS OF THE EARTH AND PLANETARY INTERIORS*,**262**, pp.80-89. doi: 10.1016/j.pepi.2016.11.006 - Yousef BM;
**Angus DA**(2017) Analysis of fracture induced scattering of microseismic shear-waves,*Studia Geophysica et Geodaetica*, . doi: 10.1007/s11200-016-0384-9 - Price DC;
**Angus DAC**; Garcia A; Fisher QJ (2017) Probabilistic analysis and comparison of stress-dependent rock physics models,*Geophysical Journal International*, . doi: 10.1093/gji/ggx151 **Angus DA**; Fisher QJ; Segura JM; Verdon JP; Kendall JM; Dutko M; Crook AJL (2016) Reservoir stress path and induced seismic anisotropy: results from linking coupled fluid-flow/geomechanical simulation with seismic modelling,*Petroleum Science*,**13**, pp.669-684. doi: 10.1007/s12182-016-0126-1- Lamy-Chappuis B;
**Angus D**; Fisher QJ; Yardley BWD (2016) The effect of CO2 -enriched brine injection on the mechanical properties of calcite-bearing sandstone,*International Journal of Greenhouse Gas Control*,**52**, pp.84-95. doi: 10.1016/j.ijggc.2016.06.018 - Birnie C; Chambers K;
**Angus D**; Stork AL (2016) Analysis and models of pre-injection surface seismic array noise recorded at the Aquistore carbon storage site,*GEOPHYSICAL JOURNAL INTERNATIONAL*,**206**, pp.1246-1260. doi: 10.1093/gji/ggw203 - Yousef B;
**Angus DAC**(2016) When do fractured media become seismically anisotropic? Some implications on quantifying fracture properties,*Earth and Planetary Science Letters*,**444**, pp.150-159. doi: 10.1016/j.epsl.2016.03.040 - Profit M; Dutko M; Yu J; Cole S;
**Angus D**; Baird A (2016) Complementary hydro-mechanical coupled finite/discrete element and microseismic modelling to predict hydraulic fracture propagation in tight shale reservoirs,*Computational Particle Mechanics*,**3**, pp.229-248. doi: 10.1007/s40571-015-0081-4 - He YX;
**Angus DA**; Clark RA; Hildyard MW (2016) Analysis of time-lapse travel-time and amplitude changes to assess reservoir compartmentalization,*Geophysical Prospecting*,**64**, pp.54-67. doi: 10.1111/1365-2478.12250 - He YX;
**Angus DA**; Blanchard TD; Wang GL; Yuan SY; Garcia A (2016) Time-lapse seismic waveform modelling and attribute analysis using hydromechanical models for a deep reservoir undergoing depletion,*Geophysical Journal International*,**205**, pp.389-407. doi: 10.1093/gji/ggw020 - He YX;
**Angus DA**; Yuan SY; Blanchard TD; Clark RA; Hildyard MW (2015) Time-lapse seismic interpretation in τ-p SPACE1 using pre-stack data,*Journal of Seismic Exploration*,**24**, pp.475-496. - He YX;
**Angus DA**; Yuan SY; Xu YG (2015) Feasibility of time-lapse AVO and AVOA analysis to monitor compaction-induced seismic anisotropy,*Journal of Applied Geophysics*,**122**, pp.134-148. doi: 10.1016/j.jappgeo.2015.09.010 **Angus DA**; Dutko M; Kristiansen TG; Fisher QJ; Kendall JM; Baird AF; Verdon JP; Barkved OI; Yu J; Zhao S (2015) Integrated hydro-mechanical and seismic modelling of the Valhall reservoir: A case study of predicting subsidence, AVOA and microseismicity,*Geomechanics for Energy and the Environment*,**2**, pp.32-44. doi: 10.1016/j.gete.2015.05.002- Price D;
**Angus D**; Chambers K; Jones G (2015) Surface microseismic imaging in the presence of high-velocity lithologic layers,*GEOPHYSICS*,**80**, pp.WC117-WC131. doi: 10.1190/GEO2015-0242.1 **Angus DAC**; Aljaafari A; Usher P; Verdon J (2014) Seismic waveforms and velocity model heterogeneity: towards full-waveform microseismic location algorithm,*Journal of Applied Geophysics*,**111**, pp.228-233. doi: 10.1016/j.jappgeo.2014.10.013**Angus DAC**(2014) Book review: Moczo, P., Kristek, J. & Galis, M. 2014. The finite-difference modelling of earthquake motions: waves and ruptures, Cambridge University Press.,*Geological Magazine*, . doi: 10.1017/S0016756814000600**Angus DAC**(2014) The one-way wave equation: a full-waveform tool for modeling seismic body wave phenomena,*Surveys in Geophysics*,**35**, pp.359-393. doi: 10.1007/s10712-013-9250-2- Lamy-Chappuis B;
**Angus DAC**; Fisher Q; Grattoni C; Yardley BWD (2014) Rapid porosity and permeability changes of calcareous sandstone due to CO2-enriched brine injection,*Geophysical Research Letters*,**41**, pp.399-406. doi: 10.1002/2013GL058534 - Lynch T;
**Angus DA**; Fisher QJ; Lorinczi P (2013) The impact of geomechanics on monitoring techniques for CO2 injection and storage,*Energy Procedia*,**37**, pp.4136-4144. doi: 10.1016/j.egypro.2013.06.315 **Angus DA**; Verdon JP (2013) Using microseismicity to estimate formation permeability for geological storage of CO2,*ISRN Geophysics*,**2013**, . doi: 10.1155/2013/160758- Usher PJ;
**Angus DA**; Verdon JP (2013) Influence of a velocity model and source frequency on microseismic waveforms: some implications for microseismic locations,*Geophysical Prospecting*,**61**, pp.334-345. doi: 10.1111/j.1365-2478.2012.01120.x - Baird AF; Kendall J-M;
**Angus DA**(2013) Frequency-dependent seismic anisotropy due to fractures: Fluid flow versus scattering,*Geophysics*,**78**, pp.WA111-WA122. doi: 10.1190/geo2012-0288.1 - Lynch T; Fisher Q;
**Angus DAC**; Lorinczi P (2013) Investigating stress path hysteresis in a CO2 injection scenario using coupled geomechanical-fluid flow modelling,*Energy Procedia*,**37**, pp.3833-3841. doi: 10.1016/j.egypro.2013.06.280 **Angus DA**; Fisher QJ; Verdon JP (2012) Exploring trends in microcrack properties of sedimentary rocks: An audit of dry and water saturated sandstone core velocity-stress measurements,*International Journal of Geosciences*,**3**, pp.822-833. doi: 10.4236/ijg.2012.324083**Angus DA**; Thomson CJ (2012) Modelling converted seismic waveforms in isotropic and anisotropic 1-D gradients: discontinuous versus continuous gradient representations,*Studia Geophysica et Geodaetica*,**56**, pp.383-409. doi: 10.1007/s11200-011-1350-1- Segura JM; Fisher QJ; Crook AJL; Dutko M; Yu J; Skachkov S;
**Angus DAC**; Verdon JP; Kendall JM (2011) Reservoir stress path characterization and its implications for fluid-flow production simulation,*Petroleum Geoscience*,**17**, pp.335-344. doi: 10.1144/1354-079310-034 - Verdon JP; Kendall JM; White DJ;
**Angus DA**(2011) Linking microseismic event observations with geomechanical models to minimise the risks of storing CO2 in geological formations,*Earth and Planetary Science Letters*,**305**, pp.143-152. doi: 10.1016/j.epsl.2011.02.048 **Angus DA**; Kendall JM; Fisher QJ; Segura JM; Skachkov S; Crook AJL; Dutko M (2011) Modelling microseismicity of a producing reservoir from coupled fluid-flow and geomechanical simulation (vol 58, pg 901, 2010),*Geophysical Prospecting*,**59**, pp.195-195. doi: 10.1111/j.1365-2478.2010.00929.x**Angus DA**; Verdon JP; Fisher QJ; Kendall JM; Segura JM; Kristiansen TG; Crook AJL; Skachkov S; Yu J; Dutko M (2011) Integrated fluid-flow, geomechanical and seismic modelling for reservoir charcterization,*Recorder*,**36**, pp.18-27.- Verdon JP; Kendall J-M; White DJ;
**Angus DAC**; Fisher QJ; Urbancic T (2010) Passive seismic monitoring of carbon dioxide storage at Weyburn,*Leading Edge*,**29**, pp.200-206. doi: 10.1190/1.3304825 - Verdon JP; White DJ; Kendall JM;
**Angus DA**; Fisher QJ; Urbancic T (2010) Passive seismic monitoring of CO2 storage at Weyburn,*72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010*,**4**, pp.2886-2890. - Al-Rumaih BW; Stuart GW; Lloyd GE;
**Angus DA**(2010) Understanding seismic anisotropy of ice in West Antarctic ice sheet,*72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010*,**7**, pp.5427-5429. **Angus DA**; Kendall J-M; Fisher QJ; Segura JM; Skachkov S; Crook AJL; Dutko M (2010) Modelling microseismicity of a producing reservoir from coupled fluid-flow and geomechanical simulation,*Geophysical Prospecting*,**58**, pp.901-914. doi: 10.1111/j.1365-2478.2010.00913.x- Hammond JOS; Kendall J-M;
**Angus DA**; Wookey J (2010) Interpreting spatial variations in anisotropy: insights into the Main Ethiopian Rift from SKS waveform modelling,*Geophysical Journal International*,**181**, pp.1701-1712. doi: 10.1111/j.1365-246X.2010.04587.x **Angus DAC**; Kendall JM; Wilson DC; White DJ; Sol S; Thomson CJ (2009) Stratigraphy of the Archean western Superior Province from P- and S-wave receiver functions: Further evidence for tectonic accretion?,*Physics of the Earth and Planetary Interiors*,**177**, pp.206-216. doi: 10.1016/j.pepi.2009.09.002**Angus DA**; Verdon JP; Fisher QJ; Kendall JM (2009) Exploring trends in microcrack properties of sedimentary rocks: An audit of dry-core velocity-stress measurements,*GEOPHYSICS*,**74**, pp.E193-E203. doi: 10.1190/1.3183940- Verdon JP;
**Angus DA**; Kendall JM; Hall SA (2008) The effect of microstructure and nonlinear stress on anisotropic seismic velocities,*Geophysics*,**73**, pp.D41-D51. doi: 10.1190/1.2931680 - Verdon JP;
**Angus DA**; Kendall JM; Segura J; Skachkov S; Fisher QJ (2008) The effects of geomechanical deformation on seismic monitoring of CO2 sequestration,*SEG Technical Program Expanded Abstracts*,**27**, pp.2869-2873. doi: 10.1190/1.3063942 **Angus DA**; Verdon JP; Kendall JM; Fisher QJ; Segura J; Skachkov S; Dutko M; Crook AJL (2008) Influence of fault transmissibility on seismic attributes based on coupled fluid-flow and geomechanical simulation,*SEG Technical Program Expanded Abstracts*,**27**, pp.1600-1604. doi: 10.1190/1.3059387**Angus DA**(2007) True amplitude corrections for a narrow-angle one-way elastic wave equation,*Geophysics*,**72**, pp.T19-T26. doi: 10.1190/1.2430694**Angus DA**; Kendall JM; Fisher Q; Dutko M; Crook AJL; Hall SA; Verdon J (2007) Linking coupled fluid-flow and geomechanical models with rock physics derived elastic models for reservoir seismic forward modelling applications,*69th European Association of Geoscientists and Engineers Conference and Exhibition 2007: Securing The Future. Incorporating SPE EUROPEC 2007*,**4**, pp.2502-2506.**Angus DA**; Wilson DC; Sandvol E; Ni JF (2006) Lithospheric structure of the Arabian and Eurasian collision zone in eastern Turkey from S-wave receiver functions,*Geophysical Journal International*,**166**, pp.1335-1346. doi: 10.1111/j.1365-246X.2006.03070.x**Angus DA**; Thomson CJ (2006) Numerical analysis of a narrow-angle, one-way, elastic-wave equation and extension to curvilinear coordinates,*Geophysics*,**71**, pp.T137-T146. doi: 10.1190/1.2236380- Wilson DC;
**Angus DA**; Ni JF; Grand SP (2006) Constraints on the interpretation of S-to-P receiver functions,*Geophysical Journal International*,**165**, pp.969-980. doi: 10.1111/j.1365-246X.2006.02981.x **Angus DA**(2005) A one-way wave equation for modelling seismic waveform variations due to elastic heterogeneity,*Geophysical Journal International*,**162**, pp.882-898. doi: 10.1111/j.1365-246X.2005.02695.x**Angus DA**; Thomson CJ; Pratt RG (2004) A one-way wave equation for modelling variations in seismic waveforms due to elastic anisotropy,*Geophysical Journal International*,**156**, pp.595-614. doi: 10.1111/j.1365-246X.2004.02151.x- Trifu CI;
**Angus D**; Shumila V (2000) A Fast Evaluation of the Seismic Moment Tensor for Induced Seismicity,*Bulletin of the Seismological Society of America*,**90**, pp.1521-1527. doi: 10.1785/0120000034