Articles in journals and conference proceedings
C. Cosma, N. Enescu, M. Cozma and the CO2SINK team, 2009. Borehole Seismic Monitoring at the CO2SINK site. 9th International Workshop on the Application of Geophysics to Rock Engineering, SINOROCK2009, Hong Kong.
G. Wood, C. O’Dowd, C. Cosma and N. Enescu, 2009. The Application of Borehole Seismic Techniques in Mine Development at the Millennium Uranium Deposit, Northern Saskatchewan, Canada. International Symposium on Uranium Raw Material for the Nuclear Fuel Cycle: Exploration, Mining, Production, Supply and Demand, Economics and Environmental Issues (URAM 2009), Vienna, Austria.
C. Cosma, L. Balu, N. Enescu, G. Wood and C. O’Dowd, 2009. Advanced Seismic Techniques Applied to Structural Characterization of Mine Development Sites. URAM 2009, Vienna, Austria.
C. Cosma, N. Enescu, T. Ahokas and E. Heikkinen, 2009. High Resolution Seismic Profiling for Tunnel Engineering at Olkiluoto, Finland. Near Surface 2009, 15th European Meeting of Environmental and Engineering Geophysics, Dublin, Ireland.
C. Cosma, L. Balu and N. Enescu, 2009. 3D VSP Migration by Image Point Transform. Submitted to Geophysics.
C. Cosma, N. Juhojuntti, C. Juhlin, G. Wood, 2008. 3D seismic survey at the Millennium uranium deposit in the Athabasca basin, Canada. SEISMIX 2008, 13th International Symposium on “Deep Seismic Profiling of the Continents and Their Margins”, Saariselkä, Lapland.
C. Cosma, N. Enescu, C. Juhlin and G. Wood, 2008. High-resolution seismic imaging at the Millennium uranium deposit, Canada. SEISMIX 2008, 13th International Symposium on “Deep Seismic Profiling of the Continents and Their Margins”, Saariselkä, Lapland.
N. Enescu and C. Cosma, 2008. Borehole seismic side-scans for mineral resource delineation. SEISMIX 2008, 13th International Symposium on “Deep Seismic Profiling of the Continents and Their Margins”, Saariselkä, Lapland.
C. Cosma, A. Nordqvist and G. Bäckblom, 2008. Application of seismic systems to pin-point the location of the drill bit in real time. 5th International Conference and Exhibition on Mass Mining, Luleå, Sweden.
C. Cosma, M. Cozma, A. Nordqvist and G. Bäckblom, 2008. A seismic method for the real-time location of the drill-bit during mine production drilling. Proc. of the 8th International Workshop on the Application of Geophysics to Rock Engineering, June 29th, San Francisco, USA.
N. Enescu, C. Cosma, C. Juhlin, I. Ohman, E. Heikkinen, 2008. Hard Rock High Resolution 3D Seismic Investigations at Olkiluoto, Finland. 70th EAGE Conference & Exhibition, Rome, Italy.
G. Perron and C. Cosma, 2008. The role of 3D earth models in seismic reflection methods applied to mineral exploration, SEG 2008 Annual Meeting, Las Vegas, USA
C. Juhlin, C. Cosma and E. Heikkinen, 2008. Application of seismic methods for siting of radioactive waste repositories in crystalline rock. SEG 2008 Annual Meeting, Las Vegas, USA
C. Cosma, N. Enescu, K. Kemppainen, T. Ahokas, E. Heikkinen, 2007. Seismic prediction of hard rock fault zones and confirmation by tunnel observations. Proc. 7th ISRM International Workshop on the Application of Geophysics to Rock Engineering, Lisbon, Portugal.
C. Cosma and N. Enescu, 2007. Seismic Characterisation of Fractured Hard Rock, drawing from experience at the Olkiluoto Nuclear Waste Repository Site, Finland. AGU, Joint Assembly, Acapulco, Mexico.
S. Yordkayhun, C. Juhlin, R. Giese, C. Cosma, 2007. Shallow velocity–depth model using first arrival traveltime inversion at the CO2SINK site, Ketzin, Germany
Journal of Applied Geophysics, Volume 63, Issue 2, 68-79
C. Juhlin, R. Giese, K. Zinck-Jørgensen, C. Cosma, H. Kazemeini, N. Juhojuntti, S. Lüth, B. Norden and A. Förster, 2007. Case History: 3D baseline seismics at Ketzin, Germany: The CO2SINK project, Geophysics, vol. 72, no. 5, 121-132.
C. Cosma, N. Enescu, H. Ahokas, E. Heikkinen, T. Ahokas, 2006. Confirmation of the Geophysical Site Characterization Results by Tunnel Observations at Olkiluoto. EAGE Near Surface 2006 - New Technologies and Research Trends.
C. Cosma, N. Enescu, B. Powell, G. Wood, 2006. Structural Mapping for Uranium Exploration by Borehole Seismic. EAGE Near Surface 2006 – Seismics.
Andrea Förster, Ben Norden, Kim Zinck-Jørgensen, Peter Frykman, Johannes Kulenkampff, Erik Spangenberg, Jörg Erzinger, Martin Zimmer, Jürgen Kopp, Günter Borm, Chris Juhlin, Calin-Gabriel Cosma, and Suzanne Hurter, 2006. Baseline characterization of the CO2SINK geological storage site at Ketzin, Germany Environmental Geosciences, Sep 2006; 13: 145 - 161.
S. Rogers, C. Cosma, P. Shiner, S. Emsley, and N. Enescu, 2006. VSP fracture imaging to bridge the well-to-seismic scale gap for a fractured carbonate reservoir Special topic on: Borehole and Non-conventional Seismic, First Break May 2006.
C. Cosma, C. Juhlin and R. Giese, 2006. A seismic trial for CO2 geological storage. Presented at the Nordic Winter Geological Meeting, Oulu, Finland.
LeBlanc, A.M., Fortier, R., Cosma, C., and Allard, M., 2006, Tomographic imaging of permafrost using three-component seismic cone-penetration test, Geophysics, H55-H65
C. Cosma, 2005. Two Decades Of Evolution Of Hardrock Seismic Imaging Methods Applied To Nuclear Waste Disposal In Finland. EAGE short course, 4th Congress of the Balkan Geophysical Society.
C. Cosma, A. Wolmarans and N. Enescu, 2005. Kimberlite Delineation by Seismic Side-scans from Boreholes. Proceedings of the 67th International EAGE Conference & Exhibition. Madrid, Spain.
C. Cosma and N. Enescu, 2004. Two Decades of Evolution of Hardrock Seismic Imaging Methods Applied to Nuclear Waste Disposal in Finland. Proceedings of the 66th International EAGE Conference & Exhibition. Paris, France.
N. Enescu, T. Ahokas, E. Heikkinen and C. Cosma, 2004. Integrated Geophysical Characterisation of a Hard Rock Site for Nuclear Waste Disposal. Proceedings of the 66th International EAGE Conference & Exhibition. Paris, France.
N. Enescu, C. Cosma, S.J. Emsley, P. Shiner, 2004. Illuminating 3D Fractured Reservoirs by Integrating 2D VSP and Vertical Incidence Data. 66th EAGE Conference & Exhibition, Paris, France.
Le Blanc, A.-M., Fortier, R. , Allard, M. and Cosma, C., 2004, Seismic cone penetration test and seismic tomography in warm permafrost, Canadian Geotechnical Journal, 41, 796-813,
C. Cosma, P. Heikkinen, J. Keskinen, 2003. Multi-azimuth VSP for rock characterisation of deep nuclear waste disposal sites in Finland In SEG publication Hardrock Seismic Exploration, edited by D. W. Eaton, B. Milkereit and M. H. Salisbury, ISBN 0-931830-41-9.
C. Cosma and N. Enescu, 2003. Ore delineation by crosshole seismics, transmission and reflection imaging at Voisey’s Bay, Canada. Proceedings of the 7th International Symposium on Recent Advances in Exploration Geophysics (RAEG2003). Kyoto, Japan.
S.J. Emsley, C. Cosma, P. Shiner, A. Beccacini and N. Enescu, 2003. Fractured Reservoirs: Using State of the Art VSP Processing and Interpretation in the Construction of Constrained Reservoir Models. Proceedings of the 6th SEGJ International Symposium - Imaging Technology - Solutions for resource exploration and environmental preservation. Tokyo, Japan.
C. Cosma and N. Enescu, 2002. Ore delineation using crosshole tomographic inversion with positioning constraints. KEGS - MGLS Symposium, Toronto, Canada.
C. Cosma and N. Enescu, 2002. Multi-azimuth VSP methods for fractured rock characterization. ISRM 5th Workshop, Toronto, Canada.
N. Enescu, G. McDowell, C. Cosma, C. Bell, 2002. Crosshole seismic investigations at Voisey's Bay, Canada. SEG, Salt Lake City, USA.
Emsley, S. J., Beccacini, A., Cosma, C., Enescu, N. and Shiner, P, 2002. Fractured Reservoirs: using VSPs to bridge the scale gap between image logs and seismic. EAGE 64th Conference & Exhibition, Florence, Italy.
C. Cosma and N. Enescu, 2001. Characterization of Fractured Rock in the Vicinity of Tunnels by the Swept Impact Seismic Technique. International Journal of Rock Mechanics and Mining Sciences, vol. 38, no. 6, 815 – 821.
C. Cosma, P. Heikkinen, J. Keskinen and N. Enescu, 2001. VSP in Crystalline Rocks - from Downhole Velocity Profiling to 3-D Fracture Mapping. International Journal of Rock Mechanics and Mining Sciences, vol. 38, no. 6, 843 – 850.
C. Cosma, O. Olsson, J. Keskinen and P. Heikkinen, 2001. Seismic characterization of fracturing at the Äspö Hard Rock Laboratory, from the kilometre scale to the meter scale. International Journal of Rock Mechanics and Mining Sciences, vol. 38, no. 6, 859 - 865.
C. Cosma and N. Enescu, 2001. Swept Impact Seismic Sources, a family of tools for ore delineation and fracture imaging. Proceedings of the 5th SEGJ International Symposium. Tokyo, Japan.
C. Cosma, S. Emsley and N. Enescu, 1999. Seismic Imaging Surveys at the Äspö HRL. Extended Abstracts Book of the EAGE 99, Helsinki, Finland.
C. Cosma, P.J. Heikkinen, J. Keskinen and N. Enescu, 1998. VSP in Crystalline Rocks – from Downhole Velocity Profiling to 3-D Fracture Mapping. In: The 3rd Äspö International Seminar on Characterization and Evaluation of Sites for Deep Geological Disposal of Radioactive Waste in Fractured Rocks. Äspö, Sweden.
Cosma, C., Olsson, O., Keskinen, J. and Heikkinen, P., 1997. Seismic characterisation of fracturing at the Äspö Hard Rock Laboratory, from the kilometre scale to the meter scale. Sassa (ed): Proceedings of International Workshop "Application of Geophysics to Rock Engineering", Int. Soc. of Rock Mechanics, New York. p 66-73.
Heikkinen, P., Cosma, C. and Keskinen, J., 1997. VSP in crystalline rocks - from downhole velocity profiling to 3-D fracture mapping. In: Sassa (ed): Proceedings of International Workshop "Application of Geophysics to Rock Engineering", Int. Soc. of Rock Mechanics, New York. p 98-104.
S.J. Emsley, O. Olsson, R. Stanfors, L. Stenberg, C. Cosma, L. Tunbridge, 1996. Integrated characterisation of a rock volume in the Äspö HRL utilised for an EDZ experiment. Proceedings “Prediction and Performance in Rock Mechanics and Rock Engineering” - EUROCK 96, Torino, Italy
C. Cosma, 1995. Keynote address. Characterisation of subsurface structures by remote sensing. Proceedings of the International Congress on Rock Mechanics (ISRM), Tokyo, Japan.
C. Cosma and P.J. Heikkinen, 1995. Seismic investigations for the final disposal of spent nuclear fuel in Finland. Invited paper. Proceedings of International Symposium on Recent Advances in Exploration Geophysics (RAEG 95). Siran Kaikan, Kyoto, Japan.
C. Cosma, 1995. Ultra Acoustic Tomography for Characterizing the Excavation Disturbed Zone. 57th EAGE Conference and Technical Exhibition, Glassgow, Scotland
P. Heikkinen and C. Cosma, 1995. 3D Interpretation of Multi-Offset VSP-Data in Crystalline Rock. 57th EAGE Conference and Technical Exhibition, Glassgow, Scotland
C. Cosma, 1990. Seismic Imaging Techniques Applied to Rock Engineering. Invited paper. Proceedings of The First SEGJ International Symposium on Geotomography, Tokyo, Japan.
Cosma C., 1985. Detection of fractured zones by crosshole seismics. Proceedings of the 2nd OECD/NEA Stripa Symposium Radioactive waste Disposal in-situ experiments in granite. Paris, pp. 160-167.
Cosma, C., 1983. Determination of the rockmass quality by the crosshole seismic methods. Bull. of the Int. Ass. of Eng. Geol. 26-27, Paris pp. 214-225
Cosma, C., 1982. A Crosshole Seismic Survey - principle and methodology. Rock mechanics symposium 1982, 16 pp.
Cosma, C., 1982. Crosshole Seismic Investigations. The Finnish Association of Mining and Metallurgical Engineers, Serie A, no 67, 37 pp.
Cosma, C., Ihalainen, M. and Korhonen, R., 1980. Crosshole Seismic method. The Finnish Association of Mining and Metallurgical Engineers, Series A , no 13, 38 pp.
Reports on nuclear waste disposal site investigations
C. Juhlin and C. Cosma, 2007. A 3D Surface Seismic Pilot Study at Olkiluoto, Finland: Acquisition and Processing Report. Posiva Working report 2007-65
Enescu, N., Cosma, C. & Balu, L. 2007. Seismic VSP Investigations at Olkiluoto, 2005. Posiva working report 2007-72.
C. Cosma, L. Balu, N. Enescu, 2006. Estimation of 3D positions and orientations of reflectors identified during the reflection seismic survey. Site descriptive modelling Forsmark Stage 2.1. SKB R-06-93, Sweden.
C. Cosma, N. Enescu, L. Balu, 2005. Vertical seismic profiling from the boreholes KFM01A and KFM02A. Forsmark site investigation. SKB P-05-168, Sweden.
L. Balu, C. Cosma, 2005. Estimation of 3D positions and orientations of reflectors based on an updated interpretation of Stage 1 reflection seismic data. Preliminary site description Forsmark area - version 1.2. SKB R-05-39, Sweden.
Enescu, N., Cosma, C. & Balu, L. 2004. Reflection seismics using boreholes at Olkiluoto – from investigation design to result validation. Sections I-III. I. Seismic Walkaway VSP investigations. II.Seismic crosshole investigations between OL-KR4 and OL-KR10. III. Methodological considerations on seismic investigations using boreholes. Posiva working report 2004-62.
Cosma, C., Enescu, N., Adam, E. & Balu, L. 2003. Vertical and horizontal seismic profiling investigations at Olkiluoto, 2001. 115 p. Posiva 2003-1. ISBN-951-652-065-0.
Enescu, N., Cosma, C. & Balu, L. 2003. Seismic VSP and crosshole investigations in Olkiluoto, 2002. Working Report 2003-13.
Cosma, C. and Enescu, N., 2003. Development of inspection technology for spent fuel copper canisters, 45 p. Posiva 2003-19.
C. Cosma, L. Balu, N. Enescu, 2003. Estimation of 3D positions and orientations of reflectors identified in the reflection seismic survey at the Forsmark area. SKB R-03-22, Sweden.
C. Juhlin, B. Bergman, C. Cosma, J. Keskinen, N. Enescu, 2002. Vertical seismic profiling and integration with reflection seismic studies at Laxemar, 2000, SKB TR-02-04, Sweden.
J. Keskinen, C. Cosma, P. Heikkinen, and N. Enescu, 1998. HSP survey at Hästholmen in Loviisa, 1997, Survey lines HSP1-HSP7. Work report 98-27e, POSIVA, Helsinki.
Keskinen, J., Cosma, C., Heikkinen, P. and Enescu, N., 1998. VSP survey at Hästholmen in Loviisa, 1997, Boreholes HH-KR1, HH_KR2 and HH_KR3. Work report 98-26e, POSIVA, Helsinki.
C. Cosma, N. Enescu, P. Heikkinen and J. Keskinen, 1998. Seismic investigations at the Grimsel Test Site and integrated interpretation of results. B-RP VIB 98-001, ANDRA, France.
Cosma, C., Heikkinen, P., Honkanen, S. and Keskinen, J., 1997. VSP survey at Kivetty in Äänekoski , Boreholes KI-KR10 and KI-KR11. Work report PATU-96-55e, POSIVA, Helsinki. 58 pp + appendices.
Cosma, C., Enescu, N., Heikkinen, P. and Keskinen, J., 1997. VSP survey at Romuvaara in Kuhmo, Boreholes RO-KR10 and RO-KR11. Work report PATU-96-56e, POSIVA, Helsinki.
Cosma, C., Enescu, N., Heikkinen, P. and Keskinen, J., 1997. VSP survey at Olkiluoto in Eurajoki, Boreholes OL-KR9 and OL-KR10. Work report PATU-96-60e, POSIVA, Helsinki.
P.J. Heikkinen, C. Cosma, J. Keskinen and N. Enescu, 1997. TRUE Block Scale – Seismic Investigations. SKB Technical Note.
C. Cosma and N. Enescu, 1996. Detailed Seismic Tomography in Radial Boreholes – D&B. SKB Technical Note.
C. Cosma and N. Enescu, 1996. Detailed Seismic Tomography in Radial Boreholes – TBM. SKB Technical Note.
Cosma, C., Heikkinen, P., Honkanen, S. and Keskinen, J., 1996. VSP-survey at Olkiluoto in Eurajoki, borehole OL-KR8 and extended parts of boreholes OL-KR2 and OL-KR4. Posiva Oy, Work report PATU-96-11e, 89 p.
Cosma, C., Heikkinen, P., Honkanen, S. and Keskinen, J., 1996. VSP survey at Olkiluoto in Eurajoki, Boreholes OL-KR8 and extended parts of boreholes OL-KR2 and OL-KR4. Work report PATU-96-11e, POSIVA, Helsinki. 86 pp + appendices.
C. Cosma and P.J. Heikkinen, 1996. ZEDEX Project Extension – Extended Analysis of the Seismic Tomography Data – Seismic Reflection Processing. SKB Technical Note.
Heikkinen, P. and Cosma, C., 1996. Extended analysis of seismic tomography data. SKB, Stockholm. Äspö Hard Rock Laboratory Technical note TN-96-11z. pp 33 + appendices.
Cosma, C., Heikkinen, P., Honkanen, S., Keskinen, J. and Sihvo, K., 1995. VSP survey at Äänekoski-Kivetty, Extended parts of boreholes KI-KR3 and KI-KR5. Work report PATU-95-10e, TVO, Helsinki. 67 pp + appendices.
Cosma, C., Heikkinen, P., Honkanen, S., Keskinen, J. and Sihvo, K., 1995. VSP survey at Kuhmo-Romuvaara 1994, Borehole RO-KR7. Work report PATU-95-13e, TVO, Helsinki. 49 pp + appendices.
Cosma, C., Heikkinen, P., Honkanen, S. and Keskinen, J., 1995. VSP survey at Romuvaara in Kuhmo, Boreholes RO-KR8 and extended parts of borehole RO-KR2. Work report PATU-95-72e, TVO, Helsinki. 81 pp + appendices.
Heikkinen, P., Cosma, C. and Keskinen, J., 1995. Development of seismic investigation techniques: Anisotropy in VSP measurements. TVO, Helsinki. Site investigation project, Work report PATU-95-58e. pp 44.
C. Cosma, C. Juhlin, O. Olsson, 1994. Reassessment of seismic reflection data from the Finnsjön study site and prospectives for future surveys, SKB TR 94-03, Sweden.
Cosma, C., Heikkinen, P., and Keskinen, J. 1994. Development of seismic investigation techniques. Part I: Coverage analysis of the VSP surveys. TVO site investigations, Work report PATU-94-02e, pp. 69.
Cosma, C., Heikkinen, P., Keskinen, J. and Honkanen, S., 1994. Testing of model driven VSP techniques in Olkiluoto, borehole KR6. Work report PATU-94-05e, TVO, Helsinki. 45 pp + appendices.
Cosma, C., Heikkinen, P. and Keskinen, J., 1994. Development of seismic investigation techniques, Part II: Site coverage of VSP surveys in Romuvaara, borehole KR2. TVO, Helsinki. Work report PATU -94-03e. pp 35.
Cosma, C., Heikkinen, P., Honkanen, S., Keskinen, J. and Stanescu, D., 1994. Localization of experimental sites and layout of turn 2, Activity: crosshole seismics (VSP). SKB Äspölaboratoriet, Stockholm. Progress report 25-94-10, pp.29, figures, appendices.
Blümling P.; Cosma C.; Korn M.; Gelbke C.; Cassell B., 1992: Grimsel Test Site: Geophysical methods for the detection of discontinuities ahead of a tunnel face. Nagra Technical Report NTB 90-07 . Nagra, Wettingen.
Cosma, C., Heikkinen, P., and Olsson, O., 1992. Processing of surface reflection data from Äspö. SKB Äspölaboratoriet, Stockholm. Progress report 25-93-04. pp 28 + appendices.
Keskinen, J., Cosma, C. and Heikkinen, P. 1992. Seismic VSP and HSP surveys on preliminary investigation areas in Finland for final disposal of spent nuclear fuel. Nuclear Waste Commission of Finnish Power Companies, Helsinki. Report YJT-92-19. , pp. 107.
Cosma, C., Heikkinen, P. and Pekonen, S., 1991. Improvement of high resolution borehole seismics. Part I: Development of processing methods for VSP surveys; Part II: Piezpelectric signal transmitter for seismic measurements. SKB, Stockholm. Stripa project report 91-13. pp 86 + appendices.
Cosma, C., Heikkinen, P. and Keskinen, J., 1991. Tubewave measurements in Konginkangas, borehole KR6B. TVO, Helsinki. Site investigations, work report 91-38. pp 11 + appendices.
Cosma, C., Heikkinen, P. and Keskinen, J., 1991. Tubewave measurements in Sievi, borehole KR6. TVO, Helsinki. Site investigations, work report 91-37. pp 12 + appendices.
Cosma, C., Heikkinen, P., Honkanen, S. and Keskinen, J., 1991. VSP-survey in Olkiluoto, boreholes KR1-KR3 and KR4-KR5. TVO, Helsinki. Site investigations, work reports 90-39 and 90-34. pp. 35 and 31 + appendices.
Cosma, C., Heikkinen, P., Honkanen, S. and Keskinen, J., 1991. VSP-survey in Syyry, boreholes KR1, KR2-KR3 and KR4-KR5. TVO, Helsinki. Site investigations, work reports 89-56, 89-57, 90-38. pp. 27, 31, 32 + appendices.
Cosma, C., Heikkinen, P., Keskinen, J. and Korhonen, R., 1991. Site characterization and validation - Results from seismic crosshole and reflection measurements - Stage 3. SKB Stockholm. Stripa project technical report 91-07.
Heikkinen, E., Saksa, P., Hinkkanen, H., Kurimo, M., Öhberg, A., Ahokas, H., Front, K., Pitkänen, P., Vaittinen, T., Cosma, C., Heikkinen, P., Keskinen, J., and Korhonen, R, 1991. Geophysical investigations in the Veitsivaara area, Finland: summary report. Nuclear Waste Commission of Finnish Power Companies, Helsinki. Report YJT-91-20. 79 pp + appendices.
Keskinen, J., Cosma, C., Heikkinen, P., and Honkanen, S., 1991. Off-shore HSP-survey in Olkiluoto, Lines HSP1-HSP6. TVO, Helsinki. Site investigations, work report 90-37. pp 54+ appendices.
Saksa, P., Paananen, M., Ahokas, H., Öhberg, A., Pitkänen, P., Front, K., Okko, O., Vaittinen, T., Cosma, C., Heikkinen, P., Keskinen, J., and Korhonen, R, 1991. Geophysical investigations in the Romuvaara area, Finland: summary report. Nuclear Waste Commission of Finnish Power Companies, Helsinki. Report YJT-91-15. 77 pp + appendices.
Cosma, C., Heikkinen, P. and Zimni, D., 1990. Monitoring of grout flow by ultrasonic probing in rock fissures at the Stripa BMT-area. Vibrometric Oy, Helsinki, Work report. pp 23 + appendices.
Cosma, C., Heikkinen, P., Keskinen, J. and Korhonen, R., 1990. VSP-survey including 3-D interpretation in Äspö, Sweden, Borehole KAS07. SKB, Stockholm. Progress report 25-90-07. pp 33.
Cosma,C., Heikkinen, P., Keskinen,J., 1990. Processing of VSP-data from Grimsel Test Site. Vibrometric AG, Switzerland, 12 pp + appendices.
Cosma, C., Heikkinen, P., Keskinen, J., and Korhonen, R., 1990. VSP-survey in Kivetty, boreholes KR2-KR3 and KR4-KR5. TVO, Helsinki. Site investigations, work report 89-55 and 89-54. pp. 36 and 32 + appendices.
Cosma, C., Heikkinen, P., Keskinen, J., and Korhonen, R., 1990. VSP-survey in Hyrynsalmi, , boreholes KR4 and KR5. TVO, Helsinki. Site investigations, work report 90-16. pp 34 + appendices.
Cosma, C., Heikkinen, P., Keskinen, J., and Korhonen, R., 1990. Processing of radar data from Olkiluto, Finland, boreholes YD-1,YD-5, YD-18, YD-21. TVO, Helsinki. Site investigations, work report 90-32. pp 35 + appendices.
Cosma, C., Heikkinen, P., and Korhonen, R., 1990. Tubewave measurements in Eurajoki, boreholes KR4 and KR5. TVO, Helsinki. Site investigations, work report 90-35. pp 15 + appendices.
Cosma, C., Heikkinen, P., Keskinen, J., and Korhonen, R., 1989. VSP-survey in Kuhmo, boreholes KR4 and KR5. TVO, Helsinki. Site investigations, work report 88-41. pp 40 + appendices.
Cosma, C., Heikkinen, P., and Korhonen, R., 1989. Tubewave measurements in Eurajoki, boreholes KR1, KR2 and KR3. TVO, Helsinki. Site investigations, work reports 89-52 and 89-53. pp 26 + appendices.
Cosma, C., Heikkinen, P., and Korhonen, R., 1989. Tubewave measurements in Sievi, boreholes KR1, KR2, KR3, KR4 and KR5. TVO, Helsinki. Site investigations, work reports 89-05, 89-49 and 89-51. pp 42 + appendices.
Cosma, C., Heikkinen, P., and Korhonen, R., 1989. Tubewave measurements in Konginkanas, boreholes KR2, KR3, KR4 and KR5. TVO, Helsinki. Site investigations, work reports 89-48 and 89-50. pp 28 + appendices.
Cosma, C., Heikkinen, P., and Korhonen, R., 1989. Tubewave measurements in Hyrynsalmi, boreholes KR4 and KR5. TVO, Helsinki. Site investigations, work report 89-47. pp 14 + appendices.
Cosma, C., Heikkinen, P., Keskinen, J., and Korhonen, R., 1989. VSP-survey in Hyrynsalmi, boreholes KR2 and KR3. TVO, Helsinki. Site investigations, work report 88-40. pp 40 + appendices.
Cosma, C., Heikkinen, P., Keskinen, J., and Korhonen, R., 1988. VSP-survey in Konginkangas, borehole KR1. TVO, Helsinki. Site investigations, work report 88-42. pp 40 + appendices.
Cosma, C., Heikkinen, P., and Korhonen, R., 1988. Tubewave measurements in Konginkangas, borehole KR1. TVO, Helsinki. Site investigations, work report 88-39. pp 12 + appendices.
Cosma, C., Heikkinen, P., and Korhonen, R., 1988. Tubewave measurements in Kuhmo, boreholes KR3, KR4 and KR5. TVO, Helsinki. Site investigations, work report 88-38. pp 16 + appendices.
Cosma, C., Heikkinen, P., and Korhonen, R., 1988. Tubewave measurements in Hyrynsalmi, boreholes KR2 and KR3. TVO, Helsinki. Site investigations, work report 88-37. pp 14 + appendices.
Cosma, C. et al. 1988. Site Characterization and Validation –Results from Seismic Crosshole and Reflection Measurements, Stage I . – Internal Report. OECD/NEA Stripa Project, Stockholm. Report TR91-07. pp 35 + appendices.
Cosma C., 1987, Crosshole Investigation – Short and medium range seismic tomography. Stripa-report, 35 pp.
Cosma, C. et al. 1987. Reflection and Tubewave Analysis of the Seismic data from the Stripa Crosshole Site. – Technical Report. OECD/NEA Stripa Project, Stockholm. Report TR87-07. pp 31 + appendices.
Cosma C., Korhonen, R., Hamalainen, K., 1986. Crosshole seismic testing-small scale site of the Stripa-project, DRAFT-report, 46 pp.
Cosma C., Heikkinen, P., Konuainaho, K., 1986. Overview of borehole seismic methods and their application to the characterization of fractures. Rock mechanics symposium 1986, 22 pp.
Cosma, C., Hamalaninen, K., Korhonen, K., 1985. A test of the VSP-method at the Lavia site. YJT S6 – 03, 35 pp. + appendices
Cosma, C., Ihalainen, M., Korhonen, R., 1985. Crosshole seismic investigations at Olkiluoto. 984- 985, YJT Report 85-35, 49 pp