Profiling of late Tertiary-early Quaternary surface in the lower reaches of Narmada valley using microtremors

Sukumarana, Prabhin ; Parvez, Imtiyaz A. ; Sant, Dhananjay A. ; Rangarajan, Govindan ; Krishnan, K. (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

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.jseaes.2011.02.011

Abstract

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.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Lower Reaches of Narmada Valley; Microtremor; Palaeo-topography; Ambient Noise; H/V Spectral Ratio; Early Quaternary; Late Tertiary
ID Code:73301
Deposited On:02 Dec 2011 09:59
Last Modified:02 Dec 2011 09:59

Repository Staff Only: item control page