Skip to main content

Advertisement

SpringerLink
Log in

Attenuation studies based on local earthquake Coda waves in the southern Indian peninsular shield

  • Original paper
  • Published:
Natural Hazards Aims and scope Submit manuscript

Abstract

The Dharwar craton, Cuddapah basin and the Godavari graben characterise three diverse geological and tectonic settings in the peninsular shield of India. Owing to their contiguous proximity, they offer a unique opportunity to document differences, if any, in their seismic wave attenuation characteristics that might have a bearing on the seismogenic nature of the crust in a craton, basin and a rift-like graben structure. An attempt is made here to bring out these differences using constraints from coda-Q. We considered local earthquakes with epicentral distances ranging from␣14 to 150 km recorded at the digital broadband stations at Dharwar (DHD), Cuddapah (CUD) and Kothagudem (KGD) regions to derive the frequency-dependent coda-Q relations. Using the single scattering method, we obtained the frequency-dependent Q C relationship (Q C = Q 0 f n)for each of the three geological units separately: DHD: Q C = (730.62 ± 0.09)f (0.54 ± 0.01); CUD: Q C = (535.06 ± 0.13)f (0.59 ± 0.01) and KGD: Q C = (150.56 ± 0.08)f  (0.91 ± 0.01). The Q C values obtained for all the three sub-regions show moderate to strong frequency dependence and essentially reflect the level of crustal heterogeneities to varying degrees.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Aki K (1969) Analysis of the seismic coda of Local earthquakes as scattered waves. J Geophys Res 74:615–631

    Article  Google Scholar 

  • Aki K (1980) Attenuation of shear waves in the lithosphere for frequencies from 5 to 25 Hz. Phys Earth Plant Inter 21:50–60

    Article  Google Scholar 

  • Aki K, Chouet B (1975) Origin of coda waves source, attenuation and scattering effects. J Geophys Res 80:3322–3342

    Google Scholar 

  • Chandra U (1977) Earthquakes of peninsular India a seismotectonic study. Bull Seismol Soc Am 67:1387–1413

    Google Scholar 

  • Dainty A (1981) A scattering model to explain seismic Q observations in the lithosphere between 1␣and 30 Hz. Geophys Res Lett 11:1126–1128

    Google Scholar 

  • Draper NR, Smith H (1966) Fitting a straight line by least squares. In: Draper NR, Smith H (eds) Applied Reg Analysis, John Wiley & Sons, New York, p 403

  • Gupta HK, Mohan I, Narain H (1970) The Godavari Valley earthquake sequence of April (1969). Bull Seismol Soc Am 60:601–615

    Google Scholar 

  • Gupta ML, Sundar A, Sharma SR (1991) Heat flow and heat generation in the Archaean Dharwar cratons and implications for the Southern Indian Shield geotherm and lithospheric thickness. Tectonophysics 194:107–122

    Article  Google Scholar 

  • Gupta S, Rai SS, Prakasam KS, Srinagesh D, Chadha RK, Priestley K, Gaur VK (2003) First evidence for anomalous thick crust beneath mid-Archean western Dharwar craton. Curr Sci 84:1219–126

    Google Scholar 

  • Krishnan MS (1960) Geology of India and Burma. Higginbothams, Madras

    Google Scholar 

  • Lee WHK, Aki K, Chouet B, Johnson P, Marks S, Newberry JT, Ryall AS, Stewart SW, Tottingham DM (1986) A preliminary study of Coda Q in California and Nevada. Bull Seismol Soc Am 76:1143–1150

    Google Scholar 

  • Naqvi SM, Rogers JJW (1987) Precambrian geology of India. Oxford Monographs, Oxford, UK

  • Pujades L, Canas JA, Egozcue JJ, Puigvi MA, Pous J, Gallart J, Lana X, Casas A (1991) Coda Q␣distribution in the Iberian Peninsula. Geophys J Int 100:285–301

    Google Scholar 

  • Pulli JJ (1984) Attenuation of coda waves in New England. Bull Seismol Soc Am 74:1149–1166

    Google Scholar 

  • Ramakrishna Rao CV, Seshamma NV, Mandal P (1997) Estimation of Coda Qc and spectral characterstics of some moderate earthquakes of Southern Indian Peninsula. Presentation at the Bull Seismol Soc Am Meet, Tokyo, Japan

  • Rautian TG, Khalturin VI (1978) The use of the coda for determination of earthquake source spectrum. Bull Seismol Soc Am 68:923–948

    Google Scholar 

  • Roberts RG, Christoffersson A, Cassidy F (1989) Real-time event detection, phase identification and source location estimation using single station three component seismic data. Geophys J␣97:471–480

    Google Scholar 

  • Roecker SW, Tucker B, King J, Hatzfeld D (1982) Estimates of Q in central Asia as a function of frequency and depth using the coda of locally recorded earthquakes. Bull Seismol Soc Am 72:129–149

    Google Scholar 

Download references

Acknowledegment

The authors are grateful to the Director, NGRI for his kind permission to publish this work.

Author information

Authors and Affiliations

  1. National Geophysical Research Institute, Hyderabad, 500 007, India

    C. H. Patanjali Kumar, C. S. P. Sarma, M. Shekar & R. K. Chadha

Authors
  1. C. H. Patanjali Kumar
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. C. S. P. Sarma
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. M. Shekar
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. R. K. Chadha
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to C. H. Patanjali Kumar.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kumar, C.P., Sarma, C.S.P., Shekar, M. et al. Attenuation studies based on local earthquake Coda waves in the southern Indian peninsular shield. Nat Hazards 40, 527–536 (2007). https://doi.org/10.1007/s11069-006-9017-x

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11069-006-9017-x

Keywords

Search

Navigation