Profiling of late Tertiary–early Quaternary surface in the lower reaches of Narmada valley using microtremors
IR@C-MMACS: CSIR-Centre for Mathematical Modelling and Computer Simulation, Bangalore
View Archive Info| Field | Value | |
| Title |
Profiling of late Tertiary–early Quaternary surface in the lower reaches
of Narmada valley using microtremors
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| Creator |
Parvez, Imtiyaz A
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| Subject |
Computational Seismology
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| Description |
In this paper, we propose the first approximation for thickness of Quaternary sediment and late Quaternary–
early Tertiary topography for the part of lower reaches of Narmada valley in a systematic way using
the shallow seismic method, that records both horizontal and vertical components of the microtremor
(ambient noise) caused by natural processes. The measurements of microtremors were carried out at
31 sites spaced at a grid interval of 5 km s using Lennartz seismometer (5 s period) and City shark-II data
acquisition system. The signals recorded were analysed for horizontal to the vertical (H/V) spectral ratio
using GEOPSY software. For the present study, we concentrate on frequency range between 0.2 Hz and
10 Hz. The thickness of unconsolidated sediments at various sites is calculated based on non-linear
regression equations proposed by Ibs-von Seht and Wohlenberg (1999) and Parolai et al. (2002). The estimated
thickness is used to plot digital elevation model and cross profiles correlating with geomorphology
and geology of the study area.
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| Publisher |
Elsevier
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| Date |
2011-05-25
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cir.cmmacs.ernet.in/48/1/parvez%2DJAES%2D2011.PDF
Parvez, Imtiyaz A (2011) Profiling of late Tertiary–early Quaternary surface in the lower reaches of Narmada valley using microtremors. Journal of Asian Earth Sciences, 41 (3). pp. 325-334. ISSN 1367-9120 |
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| Relation |
http://www.elsevier.com/locate/jseaes
http://cir.cmmacs.ernet.in/48/ |
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