Email: david.sahara@gf.itb.ac.id
Menu

Publications

Journal Publications

International Journal publications

  1. [2021] Sahara, D.P., Nugraha, A.D., Muhari, A., Rusdin, A.A., Rosalia, S.,  Priyono, A., Zulfakriza, Z ., Widiyantoro, S., Puspito, N.T., Rietbrock, A.,  Lesmana, A., Kusumawati, D., Ardianto, A., Baskara, A.W., Halauwet, Y., Shiddiqi, H.A., Rafie, M.T., Pradisti, R., Mozef, P.W., Tuakia, M.Z., Elly, E.,  Source mechanism and triggered large aftershocks of the Mw 6.5 Ambon, Indonesia earthquake. Tectonophysics 779, 228709, https://doi.org/10.1016/j.tecto.2020.228709
  2. [2021] Sahara, D.P., Nugraha, A.D., Muhari, A., Rusdin, A.A., Rosalia, S., Priyono, A., Zulfakriza, Z., Widiyantoro, S., Puspito, N.T., Lesmana, A., Kusumawati, D., Ardianto, A., Baskara, A.W., Halauwet, Y., Shiddiqi, H.A., 2019 Ambon aftershocks catalogue data compiled using local and regional seismic networks. Data in Brief 34, 106728. https://doi.org/10.1016/j.dib.2021.106728
  3. [2021] Sahara, D.P., Rahsetyo, P.R., Nugraha, A.D., Syahbana, D.K., Widiyantoro, S., Zulfakriza, Z., Ardianto, A., Baskara, A.W., Rosalia, S., Martanto, M., Afif, H., Use of Local Seismic Network in Analysis of Volcano-Tectonic (VT) Events Preceding the 2017 Agung Volcano Eruption. Frontiers in Earth Science 9 (342). DOI: 10.3389/feart.2021.619801
  4. [2021] Kusumawati, D., Sahara, D.P., Widiyantoro, S., Nugraha, A.D., Muzli, M., Imran, I., Puspito, N.T., Zulfakriza, Z., Fault Instability and Its Relation to Static Coulomb Failure Stress Change in the 2016 Mw 6.5 Pidie Jaya Earthquake, Aceh, Indonesia. Frontiers in Earth Science 8 (667). https://doi.org/10.3389/feart.2020.559434
  5. [2021] Triyoso, W., & Sahara, D. P.,  Seismic hazard function mapping using estimated horizontal crustal strain off West Coast Northern Sumatra. Frontiers in Earth Science, 9, 187. DOI:10.3389/feart.2021.558923
  6. [2021] Sarjan, A. F., Zulfakriza, Z., Nugraha, A. D., Rosalia, S., Wei, S., Widiyantoro, S., Cummins, P.R., Muzli, M., Sahara, D.P., Puspito, N.T., Priyono, A., Afif, H. (2021). Delineation of Upper Crustal Structure Beneath the Island of Lombok, Indonesia, Using Ambient Seismic Noise Tomography. Frontiers in Earth Science, 9, 269. DOI:10.3389/feart.2021.560428
  7. [2020] Gunawan, E., Nishimura, T., Susilo, S., Widiyantoro, S., Puspito, N.T., Sahara, D.P., Hanifa, N.R., Hidayati, S., Omang, A., Agustan, A., Fault source investigation of the 6 December 2016 MwMw 6.5 Pidie Jaya, Indonesia, earthquake based on GPS and its implications of the geological survey result. Journal of Applied Geodesy 14 (4). https://doi.org/10.1515/jag-2020-0027
  8. [2020] , M.T.; , R.; , P.; , A.D.; , N.T.; , , D.P.; ; (2020): Analysis of swarm earthquakes around Mt. Agung Bali, Indonesia prior to November 2017 eruption using regional BMKG network. Geoscience Letters 7 (14) . https://doi.org/10.1186/s40562-020-00163-7
  9. [2020] Harsuko, M.R.C.; Zulfakriza; Nugraha A.D.; Sarjan, A.F.N.; Widiyantoro, S.; Rosalia, S.; Puspito, N.T.; Sahara, D.P.; (2020): Investigation of Hilbert–Huang Transform and Fourier Transform for Horizontal-to-Vertical Spectral Ratio Analysis: Understanding the Shallow Structure in Mataram City, Lombok, Indonesia, Frontiers in Earth Science, DOI:10.3389/feart.2020.00334
  10. [2020] Sasmi, A.T.; Nugraha A.D.; Muzli, M.; Widiyantoro, S.; Zulfakriza; Wei, S.; Sahara, D.P.; Riyanto, A.; Puspito, N.T.; Priyono, A.; Greenfield, T.; Afif, H.; Supendi, P.; Daryono; Ardianto; Syahbana, D.K.; Husni, Y.M.; Prabowo, B.S.; Sarjan, A.F.N.; (2020): Hypocenter and Magnitude Analysis of Aftershocks of the 2018 Lombok, Indonesia, Earthquakes Using Local Seismographic Networks,Seismological Research Letters (2020) 91 (4): 2152–2162. https://doi.org/10.1785/0220190348
  11. [2020] Triyoso, W.; Suwondo, A.; Yudistira, T.; Sahara, D.P.; (2020) Seismic Hazard Function (SHF) study of coastal sources of Sumatra Island: SHF evaluation of Padang and Bengkulu cities. Geoscience Letters7, 2 . https://doi.org/10.1186/s40562-020-00151-x
  12. [2020] Zulfakriza; Nugraha, A.D.; Widiyantoro, S.; Cummins P.R.; Sahara, D.P.; Rosalia, S.; Priyono, A.; Kasbani; Syahbana, D.K.; Priambodo; I.C., Martanto; Ardianto; Husni, Y.M.; Lesmana, A.; Kusumawati, D.; Prabowo, B.S.; (2020): Tomographic Imaging of the Agung-Batur Volcano Complex, Bali, Indonesia, From the Ambient Seismic Noise Field. Frontiers in Earth Science, DOI:10.3389/feart.2020.00043
  13. [2019] Kusumawati, D.; Sahara, D.P.; Nugraha, A.D.; Puspito, N.T.; (2020): Sensitivity of static Coulomb stress change in relation to source fault geometry and regional stress magnitude: Case study of the 2016 Aceh earthquake (Mw 6.5), Indonesia. Journal of Seismology, 23, 1391–1403 DOI:10.1007/s10950-019-09878-3
  14. [2019] Sahara, D.P.; Widiyantoro, S.; (2019): The pattern of local stress heterogeneities along the central part of the Great Sumatran fault: A preliminary result. In Journal of Physics: Conference Series, Volume 1204, conference 1, DOI:10.1088/1742-6596/1204/1/012091
  15. [2019] Natania, K.A.; Sahara, D.P.; Nugraha, A.D.; Ramadhan, I.; (2019): The Physical Mechanisms of Geothermal Reservoir During Hydraulic Injection Through Microearthquake Tomography. In Journal of Physics: Conference Series, Volume 1204, conference 1, DOI:10.1088/1742-6596/1204/1/012081
  16. [2019] Hijriani, A.; Sahara, D.P.; Nugraha, A.D.; Ramadhan, I.; Sidik, R.P.; (2019): Utilization of Double-Difference Tomography for Geothermal Exploration: 3D Seismic Velocity Structure Interpretation and Fluid Determination. In Journal of Physics: Conference Series, Volume 1204, conference 1, DOI:10.1088/1742-6596/1204/1/012094
  17. [2019] Kusumawati, D.; Sahara, D.P.; Nugraha, A.D.; Puspito, N.T.; (2019): Stress drop, earthquake aftershocks and regional stress relation based on synthetic static Coulomb failure stress model. In Journal of Physics: Conference Series, Volume 1204, conference 1, DOI:10.1088/1742-6596/1204/1/012092
  18. [2019] Suhendi, C.; Fatkhan; Sahara, D.P.; Sule, M.R.; (2019): Modeling The Behavior of CO2 Injection in a Sand Reservoir. In Journal of Physics: Conference Series, Volume 1204, conference 1, DOI:10.1088/1742-6596/1204/1/012089
  19. [2019] Fatkhan; Suhendi, C.; Sahara, D.P.; Sule, M.R.; (2019): Modeling Geomechanical Responses Induced by CO2 Injection in CCS Pilot Project in Gundih Field, Indonesia. In Journal of Physics: Conference Series, Volume 1204, conference 1, DOI:10.1088/1742-6596/1204/1/012106
  20. [2019] Ry, R.V.; Sahara, D.P.; Rohaman, M.; Suhendi, C.; Palgunadi, K.H.; Widiyantoro, S.; Nugraha, A.D.; Yudistira, T.; Prabowo, B.S.; Mujihardi, B.; (2019): Implementation of GMSTech-a New Practical Software for Microseismic Data Processing for Estimating Event Source Parameters. In Journal of Physics: Conference Series, Volume 1204, conference 1, DOI:10.1088/1742-6596/1204/1/01209
  21. [2018] Sahara, D. P.; Widiyantoro, S.; Irsyam, M.; (2018): Stress heterogeneity and its impact on seismicity pattern along the equatorial bifurcation zone of the Great Sumatran Fault, Indonesia. In Journal of Asian Earth Sciences, vol 164, pp 1-8. DOI: 10.1016/j.jseaes.2018.06.002
  22. [2017] Sahara, D. P.; Schoenball, M.; Gerolymatou, E.; Kohl, T.; (2017): Analysis of borehole breakout development using continuum damage mechanics. In International Journal of Rock Mechanics and Mining Sciences, vol 97, pp. 134-143. DOI: 10.1016/j.ijrmms.2017.04.005
  23. [2016] Meller, C., Bremer, J., Baur, S., Bergfeldt, T., Blum, P., Canic, T., Eiche, E., Gaucher, E., Hagenmeyer, V., Heberling, F., Held, S., Herfurth, S., Isele, J., Kling, T., Kuhn, D., Kumar, A., Mayer, D., Müller, B., Neumann, T., Nestler, B., Nitschke, F., Nothstein, A., Nusiaputra, Y., Orywall, P., Peters, M., Sahara, D. P., Schäfer, T., Schill, E., Schilling, F., Schröder, E., Selzer, M., Stoll, M., Wiemer, H.-J., Wolf, S., Zimmermann, M. and Kohl, T (2016): Integrated research as key to the development of a sustainable geothermal energy technology. In Energy Technology. DOI: 10.1002/ente.201600579
  24. [2014] Sahara, D. P.; Schoenball, M.; Kohl, T.; Müller, B.I.R. (2014): Impact of fracture networks on borehole breakout heterogeneities in crystalline rock. In International Journal of Rock Mechanics and Mining Sciences, vol 71, pp. 301–309. DOI: 10.1016/j.ijrmms.2014.07.001
  25. [2014] Schoenball, M.; Sahara, D. P.; Kohl, T. (2014): Time-dependent brittle creep as a mechanism for time-delayed wellbore failure. In International Journal of Rock Mechanics and Mining Sciences 70 (0), pp. 400–406. DOI: 10.1016/j.ijrmms.2014.05.012
  26. [2013] Luehr, B.G., Koulakov, I., Rabbel, W., Zschau, J., Ratdomopurbo, A., Brotopuspito, K.S., Fauzi, Sahara, D.P. (2013): Fluid ascent and magma storage beneath Gunung Merapi revealed by multi-scale seismic imaging. In Journal of Volcanology and Geothermal Research, vol 261, pp 7-19, ISSN 0377-0273, DOI: 10.1016/j.jvolgeores.2013.03.015.

National Journal publications

  1. Naamin, K.N.; Sahara, D.P.; Nugraha, A.D.; Ramadhan, I. (2018): Application of Double Difference Tomography Method to Determine The 3D Seismic Wave Velocity Structure of GoLF Geothermal Field, in Jurnal Geofisika (JGF) HAGI, vol 16, pp 27-33, ISSN 2477-6084
  2. Hijriani, A.; Sahara, D.P.; Nugraha, A.D.; Ramadhan, I.; Sidik, R.P. (2017): Peningkatan Akurasi Lokasi Gempa Mikro Dengan Menggunakan Metoda Double-Difference Dan Korelasi Silang Master Waveform,  in Jurnal Geofisika (JGF) HAGI, vol 15, pp 21-25, ISSN 2477-6084
  3. Sahara, D. P.; Kusumo, A. W.; Widiyantoro, S.; Sule, M. R. (2011): Aplikasi Metode Double Differential Untuk Penentuan Relokasi Hiposenter Gempa Vulkanik Gunung Kelud Secara Akurat, in Jurnal Teknologi Mineral (JTM) ITB

Scopus-indexed Proceeding

  1. Sahara, D.P.; Kusumawati, D.; Afnimar; Triyoso, W.; Widiyantoro, S.; Nugraha, A.D.; Puspito, N.T; (2018): Introduction to stress triggers, stress shadows and their implications for seismic hazard in Indonesia. In AIP Conference Proceedings 1987, 020033 (2018); https://doi.org/10.1063/1.5047318
  2. Ramadhan, A.R.; Kusumawati, D.; Sahara, D.P.; Widiyantoro, S.; (2018): Preliminary focal mechanism pattern along the central part of the Great Sumatran Fault, Indonesia. In AIP Conference Proceedings 1987, 020047 (2018); https://doi.org/10.1063/1.5047332
  3. Husni, Y.M.; Nugraga, A.D.; Rosalia, S.; Zulfakriza; Sahara, D.P.; (2018): Aftershock location determination of the 27 May 2006, M 6.4 Yogyakarta earthquake using a non-linear algorithm: A preliminary results. In AIP Conference Proceedings 1987, 020049 (2018); https://doi.org/10.1063/1.5047334
  4. Agustina, A.; Sahara, D.P.; Nugraha, A.N.; (2017): Iterative joint inversion of in-situ stress state along Simeulue-Nias Island. In AIP Conference Proceedings 1857, 020001 (2017); https://doi.org/10.1063/1.4987043
  5. Kusumawati, D.; Sahara, D.P.; Widiyantoro, S.; (submitted): Analysis of Earthquake Multiplets in the Central Part of Sulawesi Using Waveform Cross Correlation: A Preliminary Result. In IOP Conference Proceedings of Padjadjaran Earth Dialogues 2018, Bandung, Indonesia

Selected conferences and workshops

  • Sahara, D. P.; Schoenball, M.; Kohl, T; Gerolymatou, E. (2015): Modeling of inelastic failure leading to borehole breakout, in 4th European Geothermal Workshop, Strasbourg, France
  • Sahara, D. P.; Schoenball, M.; Kohl, T; Mueller, B. (2015): Analysis of Stress Heterogeneities in Fractured Crystalline Reservoir, in World Geothermal Congress 2015, Australia-New Zealand
  • Sahara, D. P.; Schoenball, M.; Kohl, T; Mueller, B. (2014): Breakout Orientation Perturbation Modeling in Fractured Crystalline Rock, in 3rd European Geothermal Workshop, Karlsruhe, Germany
  • Sahara, D. P.; Schoenball, M.; Kohl, T. (2013): The role of active fractures on borehole breakout development, in American Geosciences Union Fall Meeting 2013, San Francisco, USA
  • Sahara, D. P.; Kohl, T. (2013): Stress heterogeneity in the fractured crystalline reservoir, in 2nd European Geothermal Workshop, Strasbourg, France
  • Schoenball, M.; Sahara, D. P.; Kohl, T. (2013): Time-dependent brittle creep as mechanism for time-delayed wellbore failure, in 6th International Symposium on In-Situ Rock Stress Sendai, Japan
  • Sahara, D. P.; Kohl, T. (2013): Importance of active fractures in the borehole breakouts heterogeneity, in 9th International Geothermal Conference 2013, Freiburg, Germany (invited paper)
  • Sahara, D. P.; Kohl, T.; Schoenball, M. (2012): Numerical calculation of a stress field near a borehole under complex conditions, in Celle International Drilling Workshop, Celle, Germany
  • Sahara, D. P.; Widiyantoro, S.; Nugraha, A.D.; Sule, M. R.; Lühr, B.G. (2011): Understanding the mechanism of subduction process and its implication to surface seismicity and volcanic activity in Central Java – Indonesia from high resolution tomography, in SEGJ International Symposium, Kyoto, Japan
  • Sule, M. R.; Sahara, D. P.; Kusnadi, Y.; Imaduddin, I; Nugraha, A; Nugraha, A.D.; Setiawan, T.; Widiyantoro, S.; Matsuoka, T. (2011):  Development of Hard- and Software of Microseismic for Geothermal Exploration and Monitoring, in World Renewable Energy Congress, Denpasar, Indonesia
  • Sahara, D. P.; Widiyantoro, S,; Nugraha, A. D.; Sule, M. R.; Lühr, B. G. (2011): Resolution Improvement of The Tomographic Inversion by Incorporating Difference Data: Case Study of Meramex Data From Central Java – Indonesia, Joint Conference Meeting HAGI-IAGI, Makasar, Indonesia
  • Sahara, D.P.; Widiyantoro, S.; Nugraha, A.D.; Sule, M. R.; Luehr, B. G. (2011): Determination of Subsurface Velocity Structure and Precise Hypocenter Relocation by using Double-Difference Technique: Case Study of MERAMEX Data from Central Java – Indonesia, European Geothermal Union, Viena, Austria
  • Lühr, B.G.; Koulakov, I.; Rabbel, W.; Zschau, J.; Ratdomopurbo, A.; Brotopuspito, K.S.; Fauzi, Sahara, D. P. (2011): Fluid Ascent and Magma Storage Beneath Gunung Merapi, European Geothermal Union, Viena, Austria