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Chatterjee, Rima
- Source Parameters and Focal Mechanisms of Local Earthquakes: Single Broadband Observatory at ISM Dhanbad
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Authors
Affiliations
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad - 826 004, IN
2 Department Geology and Geophysics, IIT Kharagpur, Kharagpur - 721 302, IN
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad - 826 004, IN
2 Department Geology and Geophysics, IIT Kharagpur, Kharagpur - 721 302, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 74, No 3 (2009), Pagination: 413-419Abstract
A three-component broadband seismograph is in operation since January 2007 at the Indian School of Mines (ISM) campus. We have used the broadband seismograms of two local earthquakes M <3 recorded by this single station to illustrate its efficacy in understanding the source processes and tectonics in Dhanbad area. Source parameters and fault plane solutions are obtained through waveform inversion. It is observed that these two earthquakes occurred in the lower crust at a depth of 26 km by strike slip faulting. North-south compressional and east-west tensional stresses are dominant in the area, and the lower crust is the source area for the local earthquakes.Keywords
Earthquake, Broadband, Seismograph, Dhanbad.References
- BAUMBACH, M. and BORMANN, P. (2002) Determination of source parameters from seismic spectra. In: P. Bormann (Ed.), IASPEI manual of Seismological Observatory Practice. GFZ Publication.
- BHATTACHARYA, S.N. (1992) Generation of synthetic seismograms with layer reduction. Geophys. Jour. Internat., v.111, pp.79-90.
- BHATTACHARYA, S.N. and DATTATRAYAM, R.S. (2003) Some Characteristics of Recent Earthquake Sequences in Peninsular India. Gondwana Geol. Magz., v.5, pp.67-85.
- BHATTACHARYA, S.N., GHOSE, A.K., SURESH, G., BAIDYA, P.R. and SAXENA, R.C. (1997) Source parameters of Jabalpur earthquake of 22 May 1997. Curr. Sci., v.73, pp.855-863.
- BHATTACHARYA, S.N., SURESH, G. and MITRA, S. (2009) Lithospheric S-wave velocity structure of the Bastar craton, Indian peninsula from surface-wave phase-velocity measurements. Bull. Seism. Soc. Amer., v.99(4), (in press).
- CHANDRA, U. (1977) Earthquakes of Peninsular India- A seismotectonic study. Bull. Seism. Soc. Amer., v.67, pp.1387-1413.
- DREGER, D.S. and HELMBERGER, H.M. (1993) Determination of source parameters at regional distances with three-component sparse network data. Jour. Geophys. Res., v.98, pp.8107-8125..
- GUPTA, H.K. (2002) A review of recent studies of triggered earthquakes by artificial water reservoirs with special emphasis on earthquakes in Koyna, India. Earth Sci. Rev., v.58, pp.279-310.
- KANAMORI, H., MORIM, J. and HEATON, T.H. (1990) The 3 December 1988, Pasadena earthquake (ML = 4.9) recorded with very broadband system in Pasadena. Bull. Seism. Soc. Am., v.80, pp.483-4
- KAYAL, J.R. (2000) Seismotectonic study of the two recent SCR earthquakes in central India. Jour. Geol. Soc. India, v.55, pp.123-138.
- KAYAL, J.R. (2007) Recent large Earthquakes in India: Seismotectonic Perspective. IAGR Mem., no.10, pp.1-11.
- KAYAL, J. R., DE, R., SAGINA RAM, SRIRAMA, B.V. and GAONKAR, S.G. (2002) Aftershocks of the 26 January, 2001 Bhuj earthquake in western India and its seismotectonic implications. Jour. Geol. Soc. India, v.59, pp.395-417.
- KAYAL, J.R., AREFIEV, S.S., BARUAH, S., HAZARIKA, D., GOGOI, N., KUMAR, A., CHOWDHURY, S.N. and KALITA, S. (2006) Shillong Plateau earthquakes in northeast India region: Complex tectonic model. Curr. Sci., v.91(1), pp.109-114.
- KAYAL, J.R., SRIVASTAVA V.K. and KUMAR, PRAKASH (2009) Crustal discontinuities below the ISM Dhanbad Observatory: Receiver function analysis of the teleseismic events (in prep.).
- PINAR, A., KUGE, K. and HONKURA, Y. (2003) Moment-tensor inversion of recent small to moderate sized earthquakes: Implications for seismic hazard and active tectonics beneath the sea of Marmara, Geophys. Jour. Int., v.153, pp.133-145.
- RICHTER, C.F. (1958) Elementary Seismology (Appendix XII), W.H. Freeman, San Francisco.
- SHEARER, P.M. (1999) Introduction to Seismology, Cambridge University Press, 260p.
- WANG, R. (1999) A simple ortho-normalization method for stable and efficient computation of Green's function. Bull. Seism. Soc. Am., v.89, pp.733-741.
- ZAHRADNIK, J., JANSKY, J. and PLICKA, V. (2008) Detailed wave form inversion for moment tensor of M ~ 4 events: Examples from the Corinth Gulf, Greece. Bull. Seism. Soc. Am., v.98, No.6, pp.2756-2771.
- Evaluation of Crustal and Upper Mantle Structures Using Receiver Function Analysis: ISM Broadband Observatory Data
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Authors
Affiliations
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad - 826 004, IN
2 National Geophysical Research Institute (Council of Scientific and Industrial Research), Hyderabad - 500 007, IN
1 Department of Applied Geophysics, Indian School of Mines, Dhanbad - 826 004, IN
2 National Geophysical Research Institute (Council of Scientific and Industrial Research), Hyderabad - 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 78, No 1 (2011), Pagination: 76-80Abstract
A three-component broadband seismograph is in operation since January 2007 at the Indian School of Mines (ISM) campus, Dhanbad. We have used the broadband (BB) seismograms of 17 teleseismic events (M ≥ 5.8) recorded by this single BB station during 2008-09 to estimate the crust and upper mantle discontinuities in Dhanbad area which falls in the peninsular India shield. The converted wave technique and the Receiver function analysis are used. A 1-D velocity model has been derived using inversion. The Mohorovicic (Moho) discontinuity (crustal thickness) below the ISM observatory is estimated to be ~41 km, with an average Poisson ratio of ~0.28, suggesting that the crust below the Dhanbad area is intermediate to mafic in nature. The single station BB data shed new light to the estimate of crustal thickness beneath the eastern India shield area, which was hitherto elusive. Further, it is observed that the global upper mantle discontinuity at 410 km is delayed by ~0.6 sec compared to the IASP-91 global model; this may be explained by a slower/hotter upper mantle; while the 660 km discontinuity is within the noise level of data.Keywords
Broadband Seismograms, Teleseismic Events, Receiver Function, Crust and Upper Mantle, Moho Discontinuity.- Mineralogy and Pore Structure Characterization of Lower Oligocene to Early Miocene Formations in Parts of Assam–arakan Basin, North East India.
Abstract Views :225 |
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Authors
Affiliations
1 Indian Institute of Technology (Indian School of Mines), Dhanbad 826 004, IN
1 Indian Institute of Technology (Indian School of Mines), Dhanbad 826 004, IN
Source
Current Science, Vol 123, No 2 (2022), Pagination: 202-213Abstract
In this study, reservoir rocks have been characterized by pore-scale measurements and mineralogical analysis of core samples, drill cuttings or crushed samples col-lected from Upper Assam and Mizoram, North East India. The mineralogical composition and pore types were examined using various laboratory techniques, like petrography under transmitted light microscope, field emission scanning electron microscopy (FE-SEM), X-ray diffraction and nitrogen (N2) gas adsorption. The variation in porosity and permeability was related to different factors such as rock composition, cement-ing, textural parameters, grain size and sorting, pores and pore throats. Mapping attributes like pore struc-ture, surface area, pore size distribution (PSD), pore orientation, connectivity and pore volume regulated fluid flow through the pore network, which provides significant variations in the reservoir properties. Pores were analysed from the image processing of FE-SEM photomicrographs, which were used to estimate poros-ity and generate the topology map. This information was further used to visualize pore connectivity in a 3D pore network model. Pore characterization from N2 adsorption analysis helped infer the pore structure, pore volume, and PSD in the reservoir rocks. The stud-ied samples have an excellent meso to macro pore net-work that is also supplemented by the derived pore network.Keywords
Mineralogy, Pore Size Distribution, Pore Network, Pore Structure, Reservoir RocksReferences
- Sing, K. S. W., Everett, D. H., Haul, R. A. W., Moscou, L., Pierotti, R. A., Rouquerol, J. and Siemieniewska, T., Reporting physisorp-tion data for gas/solid systems with special reference to the deter-mination of surface area and porosity. Pure Appl. Chem., 1985, 57, 603–619.
- Kuila, U. and Prasad, M., Specific surface area and pore-size distri-bution in clays and shales. Geophys. Prospect., 2013, 61, 341–362.
- Wandrey, C. J., Sylhet–Kopili/Barail–Tipam composite total petro-leum system, Assam Geologic Province, India. US Geol. Surv. Bull., 2004, 2208-D, 1–19.
- Alam, J., Chatterjee, R. and Dasgupta, S., Estimation of pore pres-sure, tectonic strain and stress magnitudes in the Upper Assam basin: a tectonically active part of India. Geophys. J. Int., 2019, 216, 659–675.
- Gogoi, T. and Chatterjee, R., Estimation of petrophysical parame-ters using seismic inversion and neural network modeling in Upper Assam basin, India. Geosci. Front., 2019, 10(3), 1113–1124; https:// doi.org/10.1016/j.gsf.2018.07.002.
- Murty, K. N., Geology and hydrocarbon prospects of Assam Shelf – recent advances and present status. Petrol. Asia J., 1983, 6(4), 1–14.
- Lokho, K. and Singh, B. P., Ichnofossils from the Miocene Middle Bhuban Formation, Mizoram, Northeast India and their paleoenvi-ronmental significance. Acta Geol. Sin., 2013, 87(4), 801–812.
- Nandy, D. R., Dasgupta, S., Sarkar, K. and Ganguly, A., Tectonic evolution of Tripura–Mizoram Fold Belt, Surma Basin, northeast India. J. Geol. Min. Metall. Soc. India, 1983, 55(4), 186–194.
- Gogoi, T. and Chatterjee, R., Multimineral modeling and estima-tion of brittleness index of shaly sandstone in Upper Assam and Mizoram areas, India. SPE Reserv. Eval. Eng., 2020, 23(2), 708–721; https://doi.org/10.2118/200498-PA.
- Welton, J. E., SEM petrology Atlas, American Association of Pe-troleum Geologists, Oklahoma, USA, 2003, p. 247.
- Mendhe, V. A. et al., Geochemical and petrophysical characteristics of Permian shale gas reservoirs of Raniganj Basin, West Bengal, India. Int. J. Coal Geol., 2018, 188, 1–24.
- Brunauer, S., Emmett, P. H. and Teller, E., Adsorption of gases in multimolecular layers. J. Am. Chem. Soc., 1938, 60(2), 309–319.
- Nelson, P. H., Pore-throat sizes in sandstones, tight sandstones, and shales. AAPG Bull., 2009, 93, 329–340.
- Barett, E. P., Joyner, L. G. and Halenda, P. P., The determination of pore volume and area distributions in porous substances, I. Com-putations from nitrogen isotherms. J. Am. Chem. Soc., 1951, 73(1), 373–380.
- Wu, K., Ma, Q. F. and Feng, Q. I., Middle Permian pore characteris-tics and shale gas exploration significance from the Gu-feng forma-tion in Jianshi, Western Hubei. Earth Sci. J. China Univ. Geosci., 2012, 37, 175–183.
- Tavanaei, A. and Salehi, S., Pore, throat, and grain detection for rock SEM images using digital watershed image segmentation algorithm. J. Porous Media, 2015, 18, 507–518.
- Fatt, I. et al., The network model of porous media. Petrol. Trans. AIME, 1956, 207, 160–181.
- Mendhe, V. A., Mishra, S., Kamble, A. D., Bannerjee, M., Mukherjee, S., Kumar, V. and Sinha, A., Shale gas and emerging energy resource: prospects in India. Indian Min. Eng. J., 2015, 54(6), 21–31.
- Sarkar, P., Kumara, A., Singh, K. H., Ghosh, R. and Singh, T. N., Pore system, microstructure and porosity characterization of Gond-wana shale of Eastern India using laboratory experiment and water-shed image segmentation algorithm. Mar. Pet. Geol., 2018, 94, 246–260.
- Anovitz, L. M. and Cole, D. R., Characterization and analysis of porosity and pore structures. Rev. Mineral. Geochem., 2015, 80, 61–164; http://dx.doi.org/10.2138/rmg.2015.80.04.
- Brunauer, S., Deming, L. S., Deming, W. S. and Teller, E., On a theory of the Van der Waals adsorption of gases. J. Am. Chem. Soc., 1940, 62, 1723–1732.